Download Free Nokia SRA Composite Exam 4A0-C02 Dumps Questions

test2022-02-10T07:00:27+00:00

Nokia SRA composite exam combines four required individual exams for SRA certification into a single, integrated exam. Candidates will have the option to write the single SRA composite exam or write the four individual exams. The four individual exams are:

Nokia Border Gateway Protocol (Exam #4A0-102)
Nokia Virtual Private LAN Services (Exam #4A0-105)
Nokia Virtual Private Routed Networks (Exam #4A0-106)
Nokia Quality of Service (Exam #4A0-107)

To help you best prepare for your 4A0-C02 exam, Freetestshare can help you pass your 4A0-C02 test quickly and easily! Here we have some 4A0-C02 sample exam questions. Try them to see if you are ready.

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1. An Alcatel-Lucent 7750 SR is configured with a policy to export directly-connected networks to BGP.

Which of the following commands verifies that the export was successful?

show router route-table

show router bgp routes

show router bgp routes <prefix> hunt

show router bgp neighbor <ip-address> received-routes

2. What needs to be configured in a VPLS in order to forward customer STP BPDUs transparently?

Spanning tree must be enabled within the VPL

Spanning tree BPDUs must be untagged.

Spanning tree BPDUs must be tagged.

Spanning tree must be disabled within the VPL

3. For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is an ISP that provides Internet connectivity to its end-customers, which of the following is FALSE?

All traffic exchanged between end-customers is carried over a single CSC VR

Customer carrier PE routers residing in different sites must run eBGP between them to exchange customers' routes.

The customer carrier network can be a pure IP network.

MPLS can be used in the customer carrier network to improve scalability.

4. Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP.

Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?

65200 (65206 65202) 65100

(65206 65202)65100

65250 (65206 65202) 65100

65200 65100

5. Which of the following functions must a PE router support when participating in a VPLS service? (Choose 3)

MAC learning

Frame replication

Frame fragmentation

Frame forwarding

Must discard frames with an unknown destination MAC

MSTP

6. The user of an Alcatel-Lucent 7750 SR wants to see the effect of changing an import policy immediately.

What is the best command to force re-evaluation of the import policy with minimal impact?

Configure router bgp shutdown

Clear router bgp neighbor <ip-address> soft

Clear router bgp neighbor <ip-address> soft-inbound

Clear router bgp protocol

7. Click the exhibit.

Which of the following can be used by router R4 in AS 65542 to reject all routes originating in AS 65540?

An import policy that rejects updates with an AS Path matching the regular expression ".+ 65540 .+".

An import policy that rejects updates with an AS Path matching the regular expression ".+ 65540".

An import policy that rejects updates with an AS Path matching the regular expression "65540 .+".

An import policy that rejects updates with an AS Path matching the regular expression "65540".

8. How are local CE routes associated with the appropriate VRF at the PE?

Based on the interface on which they are received.

Based on the Route Distinguisher.

Based on the Route Target.

Based on the Service Identifier.

9. Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between the ISPs?

ISP 1 and ISP 2 have a public transit relationship, while ISP 3 and ISP 4 have a private transit relationship.

ISP 1 and ISP 2 have a private transit relationship, while ISP 3 and ISP 4 have a public transit relationship.

ISP 1 and ISP 2 have a private peering relationship, while ISP 3 and ISP 4 have a public peering relationship.

ISP 1 and ISP 2 have a public peering relationship, while ISP 3 and ISP 4 have a private peering relationship.

10. Click on the exhibit below.

In the following diagram, traffic ingressing on SAP 1/2/3:1 will be passed to the layer-2 DPI device for inspection based on a filter policy applied to the ingress of the SAP.

What feature should be enabled on SAP 1/2/1:100 and SAP 1/2/2:100 to ensure that incorrect information is not populated in the FDB of VPLS 1?

Learning should be disabled on both SAPs connected to the DPI device to prevent FDB instability

A MAC filter should be applied to both SAPs connected to the DPI to limit MAC learning on the port

An IP filter should be applied to both SAPs connected to the DPI to prevent FDB instability

The SAPs connected to the DPI should be configured with the "discard-unknown" feature to limit MAC learning on the port

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11. When allocating scheduling resources, which of the following statements BEST describes how the egress port scheduler allocates bandwidth?

The egress port scheduler takes the ratio of requested bandwidth to total bandwidth request from all children. It allocates bandwidth fairly, using these percentages and not exceeding the egress interface speed.

The egress port scheduler allocates bandwidth based on a WRR distribution method that takes into account the CIR and PIR requested at each level and the max speed, either default or configured, on egress.

The egress port scheduler allocates bandwidth on a first come, first served distribution method that takes into account the total CIR and PIR requested at each level and the max PIR requested from a single level.

The egress port scheduler will limit the bandwidth offered to the egress port based on the over-subscription factor, provisioned under the router interface, while using a WRR scheduler for the remaining bandwidth.

The egress port scheduler will use the Russian Dolls Method to allocate bandwidth to each level of requested bandwidth. HPO-Only is automatically set to 100%, allowing only high priority traffic to be buffered during congestion.

12. When configuring the CE with the selected CE-PE routing protocol on an Alcatel-Lucent 7750 SR, which of the following statements is true? (Choose three.)

The protocol is configured under the config>service context

The protocol is configured under the global router context

The interface leading to the PE is defined as a protocol neighbor

The routing protocol used must be the same as the routing protocol used at other CE-PE locations in the same VP

A routing policy may or may not be required depending on the routing requirements and routing protocol

13. Click the exhibit.

For the Inter-AS model B VPRN, which of the following about the inter-as-label output on ASBR1 is TRUE?

ASBR1 includes label 131069 in the route update sent to ASBR2.

ASBR1 includes label 131068 in the route update sent to ASBR2.

ASBR1 includes label 131068 in the route update sent to PEL

ASBR1 includes labels 131068 and 131069 in the route update sent to ASBR2.

14. Given the scheduler-policy parameters shown, and assuming the offered rate of each queue is 10 Mbps, what are the operational PIR and CIR for queue 1?

PIR = 4 Mbps, CIR = 1 Mbps

PIR = 1 Mbps, CIR = 1 Mbps

PIR = 10 Mbps, CIR = 1 Mbps

PIR = 5 Mbps, CIR = 5 Mbps

PIR = 1.25 Mbps, CIR = 1.25 Mbps

15. Which of the following routes is NOT considered an internal route?

A route received from a BGP peer within the same A

A route originated by a router in a different cluster of the same A

A route received from a BGP peer from a different member AS of a confederation.

A route received from a BGP peer from the same member AS of a confederation.

16. An Alcatel-Lucent 7750 SR is configured with an export policy to redistribute its directly-connected networks into BGP.

Which of the following databases contains the routes for these networks?

The routes are in the RIB-In.

The routes are in the Loc-RI

The routes are in the RIB-Out.

The routes are not in any of the BGP databases.

17. Which of the following statements are true regarding P devices in an MPLS VPRN? (Choose two.)

Participate in service provider core routing

P devices are not required to be MPLS enabled. MPLS is only required on the PE devices

Run a common routing protocol with the CE router

Must support MP-BGP

Do not have any connections to the CE

Must be aware of the VPRNs

18. Which of the following statements BEST describes an MBS parameter?

It specifies the maximum rate at which a queue can be serviced.

It specifies the maximum depth of a queue beyond which packets will be dropped.

It specifies the portion of a queue that is taken from the reserved buffer pool.

It specifies the threshold beyond which only in-profile packets will be queued.

It specifies the peak bandwidth that can be attained by the incoming traffic.

19. Click the exhibit.

Which of the following statements about the implementation of the CE hub and spoke topology is FALSE?

PE1 advertises spoke routes to CE1.

The primary VRF on PE1 is used to route data packets from the hub CE to the spoke sites.

The secondary VRF on PE1 contains routes learned from the spoke sites.

Spoke sites do not learn routes from other spoke sites directly.

20. Which of the following about BGP loops in a VPRN environment is FALSE?

Traditional BGP loop detection mechanisms may detect a loop in the VPRN scenario, which in fact is not present.

The Alcatel-Lucent 7750 SR accepts routes containing AS_PATH loops by default.

When the CLI command "config>router>bgp# loop-detect discard-route" is used, the Alcatel-Lucent 7750 SR sends a notification to the remote peer and drops the BGP session.

In VPRN implementations where the CE-PE protocol is BGP, it is possible for separate sites of the same customer to use the same BGP autonomous system number.

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21. Based upon the exhibit, which of the following statements about LAG 1 is TRUE?

PE1 is the master.

The system-ID used by the CE device is 60:2c:ff:00:00:00.

The Admin Key used by the CE device is 40000.

There is a configuration error between the two MC peers.

22. In RSTP, an alternate port is on the same switch as a designated Port.

TRUE

FALSE

23. A queue is configured with the following attributes:

MBS = 10KB

CBS = 5KB

High-Priority-Only = 30%

Assume that there is no CBS overbooking and that the slope-policy is disabled.

If the current queue depth is 8KB, what will happen to an in-profile packet arriving in the queue?

It will be discarded because the high-priority-only threshold is exceeded.

It will be queued but re-marked as "out-of-profile."

It will be queued in the reserved portion of the buffer pool and remain "in-profile."

It will be queued in the shared portion of the buffer pool but contend for shared buffer space with packets from other queues.

It will be queued in the shared portion of the buffer pool but may be dropped if the buffer utilization exceeds the start-average value of the low slope.

24. Which of the following statements best describes the output from an Alcatel-Lucent 7750 SR shown below?

The BGP session from PE to P is not operational

The BGP session between PEs is operational

The BGP session between PE and CE is not operational

The BGP session from PE to CE is operational

The BGP session between PEs is not operational

25. Which protocol is used to exchange customer VPRN routes between PE devices?

OSPF

ISIS

MP-BGP

BGP

Targeted LDP

26. Click the exhibit.

The headquarter sites of VPRN 10 and VPRN 20 ate part of an extranet VPRN.

Which of the following communities are included in the export policy applied to VPRN 10 on router R1?

"Extranet-VPN-Blue" and "Extranet-VPN-Green"

"Blue-Only"

"Extranet-VPN-Blue"

"Blue-Green"

27. Click the exhibit.

Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh.

What path does traffic destined to 192.168.1.0/27 take from router R1?

R1-R3-R8

R1-R2-R4-R8

R1-R3-R4-R8

R1-R2-R4-R3-R8

28. One of the shortcomings of Spanning Tree Protocol (STP) is that it computes a valid, but not necessarily optimal, path between nodes within a network.

TRUE

FALSE

29. The service-mtu of a VPLS using MPLS encapsulation is set to 9100.

What is the minimum MTU value that can be set for the network port if fast re-route facility mode is used on the SDP LSP?

9100

9104

9108

9122

9126

30. The port groups have been configured consistently on the PE routers, as highlighted in the exhibit.

Which SDP connection will be blocked first when the re-learn rate is exceeded?

The connection between PE-A and PE-C

The connection between PE-A and PE-B

The connection between PE-D and PE-C

The connection between PE*D and PE-B

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31. Individual application streams are considered microflows, whereas __________ are considered macro flows.

SAPs

SDPs

Services

Queues

Schedulers

Forwarding classes

32. Click the exhibit.

Router R6 is a route reflector with clients R1, R2 and R5. Router R3 advertises the prefix 192.168.1.0/27 to routers R1, R2 and R5.

How many routes for prefix 192.168.1.0/27 will router R6 receive?

None

33. In a VPRN the PE device is configured to run which of the following protocols? (Choose three.)

MP-BGP for exchanging customer routes with other PEs

A routing protocol for exchanging customer routes with the CE

MPLS for exchanging labels with other provider core devices

MPLS for exchanging labels with the CE devices

Targeted LDP for exchanging VPRN labels with other PE devices

A label signaling protocol for defining transport tunnels between PE and CE devices

34. Which of the following about the configuration of VPRN Outbound Route Filtering (ORB on an Alcatel-Lucent 7750 SR is TRUE?

The ORF configuration must be done under the BGP neighbor context only.

When sending is enabled, the ORF function takes the route target list configured in all outbound policies and pushes this list to the peer by default.

When configuring ORF, the session with the peer must be cleared/reset for the new capability negotiation to take place.

When Outbound Route Filtering is configured, both the sending and acceptance of ORF are enabled by default.

35. Why should you configure send-flush-on failure on your PE routers when using active/standby pseudo wires?

It flushes the local FDB speeding recovery

It discards all packets in the queue and sends icmp-discad messages to the sender. The packets are re-transmitted resulting in no loss of data.

On failure, the PE sends an LDP flush-all-from-me message to all PE devices in the VPL

This speeds convergence to the new topology.

It is not important to use send-flush-on-failure as Active/Standby signalling automatically converges the FDB in all VPLS instances

36. What operation is performed by a P device on the label signaled by MP-BGP when it receives a labeled packet for a VPRN service?

It will label switch the packet based on this label

It will decrement the TTL and label switch the packet based on this label

It will SWAP the label for a new label and then label switch the packet

The P router does not perform any operation on this label

37. Which of the following statements are TRUE regarding the building of a QoS-enabled network? (Choose two)

It is important that all packets are classified in the same way at all SAP-ingress points.

Once a packet is classified to a forwarding class, it cannot change across the network.

Packet enters a node will be treated as per the local hop's configured policy.

Native IP packets entering a network port will be marked at the first network egress by default

Native IP packets entering a network port will not be marked at the first network egress by default.

Native IP packets entering a network port will be marked at the first network egress, regardless of the re-marking configuration.

38. If the command "disable-learning" has been added at the VPLS level, then MAC entries which have already been learned will not be aged.

TRUE

FALSE

39. Which of the following is not a valid BGP design for a network provider supporting VPRNs?

Full mesh of MP-BGP between all P devices

Full mesh of MP-BGP between PE devices

Route reflector configuration between PE devices

Confederation configuration between PE devices

40. Click the exhibit button below.

A partial SAP-ingress policy configuration is shown below. A UDP video stream is sent to a PC with IP address 192.168.1.100.

Given the SAP-ingress policy, to which forwarding class is the traffic matched?

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41. Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?

Only entry 10 is executed for "client1" and "client2".

Entries 10 and 20 are executed for "client1", and entries 10 and 30 are executed for "client2".

Entries 10 and 20 are executed for "client1", and entries 10, 20 and 30 are executed for "client2".

Entry 10 is executed for directly-connected routes, entry 20 for "client1" and entry 30 for "client2".

42. Packets arrive at the VPRN SAP on PE1 with DSCP marking of all.

According to the QoS policies applied at routers PE1, P, and PE2, what is the DSCP value of packets egressing router PE2? (All the SDPs are MPLS-encapsulated, and all interfaces are using their default trust states).

af11

af12

af31

af33

43. Which of the following are possible criteria for classifying packets at the SAP-ingress? (Choose three)

The EXP bits in the MPLS header.

The packet's source and destination IP addresses.

The service ID of the service to which the SAP belongs.

The dot1p bits in the frame header.

The packet's Ether type.

44. Which of the following statements about a management VPLS are true? (Choose 2)

A management VPLS carries customer traffic over the non-blocking spoke-SDP

A VPLS service must be defined as a management VPLS upon creation to take on the role of a management VPLS

The state of a spoke-SDP within a user VPLS will take on the state of the spoke-sdp within the management VPL

The management VPLS must be created before the user VPL

45. Click the exhibit button below.

Given the SAP-ingress policy, which of the following statements are TRUE? (Choose three)

All AF traffic will be marked "in-profile" at the SAP-ingress.

All TCP traffic will be mapped to forwarding class E

UDP traffic is placed in queue 3 while ICMP traffic is placed in queue 5.

EF traffic will receive higher scheduling priority than H2 traffic.

Traffic that does not match any of the IP criteria will be placed in queue 3.

46. Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?

All routers with which it has a BGP session.

All routers with which it has a BGP session, except the router it received the update from, which is router

Only eBGP neighbors.

47. A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a route from BGP for 10.0.0.0/8. Both routes have reachable next hops.

Which of the following is TRUE?

Only the BGP route is in the route table.

Both routes are in the route table.

None of the routes is in the route table.

Only the OSPF route is in the route table.

48. Which of the following statements is FALSE when providing Internet access using route leaking between a VRF and the global routing table?

It is best used when a single VPN is required to provide Internet access, as well as to maintain VPN connectivity between different customer sites.

If there is no requirement for the VRF to contain the full Internet routing table, a default route to the Internet gateway router is sufficient.

Only one interface on the CE is required for both VPN and Internet connectivity.

The Nokia 7750 SR supports route leaking in full mesh and extranet VPRN topologies only.

49. Click the exhibit button below.

Based on the configuration shown below, name the forwarding class to be associated with a TCP packet encapsulated inside an Ethernet frame that arrives on SAP 1/1/5 with the following characteristics:

Destination IP address = 120.110.1.1

TCP port number = 23

DSCP value = nc1

Dot1pvalue = 3

50. Which of the following about inter-AS model C VPRN is FALSE?

ASBRs exchange labeled IPv4 routes for the system addresses of PE routers.

It requires a route reflector to be configured in each AS for successful operation.

VPN-IPv4 routes are neither maintained nor distributed by the ASBRs.

PE routers in different ASes exchange VPN-IPv4 routes directly between each other using MP-eBG

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51. Which command will display the Route Target associated to a specific prefix on an Alcatel-Lucent 7750 SR?

Show router bgp routes

Show router bgp routes <prefix> detail

Show router route-table

Show router <service-id> route-table

Either (b) or (d)

52. How is the aggregator attribute handled with 32-bit AS numbers?

With the same method and attribute as 16-bit AS numbers.

With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

Aggregation is not yet supported with 32-bit AS numbers.

By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTL

53. Which of the following describes the goal of an Extranet VPRN?

To reduce the number of VPRN tunnels required.

To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPR

To simplify the administration of multiple VPRNs.

To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.

54. Forwarding subclasses are only relevant to, and are therefore applied within the context of, a _____________policy.

network

scheduling

slope

SAP-ingress

network-queue

55. How many designated ports are there in a spanning tree topology?

The same as the number of alternate ports in the topology

1 per segment

The same as the number of root ports

1 per switch

56. In RSTP, how is the root bridge selected?

The switch with the highest bridge-id is selected as root.

The switch with the lowest bridge-id is selected as root.

The switch with the highest MAC address is selected as root

The switch with the lowest MAC address is selected as root.

57. Two management VPLSs have been created. mVPLS 1 and mVPLS 2. Two user VPLS services exist. uVPLS 10 and uVPLS 20.

What command can be used to determine which management VPLS is managing uVPLS 10?

show stp 10

show service vpls 1 stp C, show service id 10 stp

show service id 1 stp or show service id 2 stp

58. To reduce the amount of flooding between PE devices which of the following steps should be taken?

Configure the local age timer to be larger.

Configure the local age timer to be lower.

Configure the remote age timer to be larger.

Configure the remote age to be lower.

59. According to the SAP-egress policy configured and applied, which queue will EF traffic use?

Queue 2 in "policer-output-queues," the default queue group used by policers on egress, because there are no queues in the "qg-10" queue-group template.

The local SAP's queue 1, because there is no queue in the "qg-10" queue-group template for EF traffic.

Queue 1 in the "qg-10" queue-group, because it exists by default and all traffic is mapped to it.

EF traffic is dropped because there are no queues in the "qg-10" queue-group template.

60. Which regular expression will match the AS Path of a route originating in remote AS 65100?

".+ 65100"

"65100.+"

".* 65100.*"

"65100"

Page 7 of 16

61. What class of attribute is Originator_ID?

Well-known mandatory.

Well-known discretionary.

Optional transitive.

Optional non-transitive.

62. What is the purpose of the Route Distinguisher?

It defines the VPN membership

It defines which routes are imported into the vrf

It defines which routes are exported from the vrf

It is used to make IPv4 addresses unique

It is used as the VPN label

63. Which of the following regarding the TTL of a BGP message is TRUE?

TTL is a well-known mandatory BGP attribute.

The default TTL value of an eBGP message is 1, and 64 for an iBGP message.

The default TTL value of an iBGP message can be modified using the multihop command.

The default TTL value of an eBGP message can be modified using the "ttl-security" command.

64. Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Prefixes advertised by router R2 have a local preference of 200. Router R1 advertises the prefix 192.168.1.0/27 to routers R2 and R3.

Assuming that router R3 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R4?

Option A

Option B

Option C

Option D

65. Which of the following best describes the difference between VPWS and VPLS?

Unlike VPL

VPWS appears as a multi-hop network to the customers.

Unlike VPLS, VPWS allows CEs that are member of the same service instance to communicate with each other as if they are connected via a bridged LA

Unlike VPWS, VPLS allows customers to view the network as a routed network.

Unlike VPWS, VPLS is a service where customer MAC addresses are learned.

66. What are the two primary problems the service provider must consider when providing traditional Layer 3 VPN services using only a single common routing table in the provider core? (Choose two)

Memory exhaustion in the provider core

Route leaking between the customer networks

CPU utilization for route processing

Unwanted packet forwarding between customer networks

67. Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier who is an Internet Service Provider (ISP).

Which of the following configuration steps is NOT required?

Configuring iBGP sessions between PEs residing in different customer carrier sites,

Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-C

Configuring an IES service on PEL

68. What is the function of the Cluster_List attribute?

It is used for loop detection within the same cluster.

It is used for loop detection between clusters.

It is used for loop detection in a confederation.

It is used to identify the route reflectors within an A

69. On the Alcatel-Lucent 7750 SR, how many queues per FC are available for multipoint traffic within a VPLS on service ingress?

70. In the image shown above, the SAP-ingress policy is applied properly to a Nokia 7750 SR. A traffic stream is received from an IP address of 192.168.1.1 with DSCP set to EF.

Which forwarding class and priority level is used for this traffic stream?

FC H1, high

FC EF, high

FC H2, low

FC EF, low

Page 8 of 16

71. Click the exhibit.

Router R6 is a route reflector with clients R1, R2, R4 and R5. Router R4 receives three routes from router R6 and is configured with ECMP 3.

Given the following BGP configuration on routerR4, how many primary and backup paths will be present in router R4's BGP routing table?

Three primary paths,

Two primary paths and one backup path.

One primary path and two backup paths.

One primary path and one backup path.

72. Which of the following statements about the default scheduler in the Nokia 7750 SR is TRUE?

A queue will be serviced as expedited if all of the forwarding classes mapped to it are expedited, regardless of its configured type.

A queue will be serviced as best-effort if all of the forwarding classes mapped to it are best-effort, regardless of its configured type.

A queue will be serviced as expedited if at least one of the forwarding classes mapped to it is expedited, regardless of its configured type.

A queue will be serviced as expedited if its type is configured as expedited, regardless of the forwarding classes mapped to it.

73. Click the exhibit button below.

Given the SAP-ingress policy, which of the following statements are FALSE? (Choose three)

Queue 5 is using priority mode.

UDP traffic can be serviced at a maximum rate of 20 Mbps.

Ping traffic is place in queue 5.

Queues 5 and 6 will receive equal portions of any remaining available bandwidth to meet their above-CIR bandwidth requirements.

Queue 3 is scheduled before queue 5.

74. Which of the following is NOT considered an option of export policies?

Advertising customer networks into BG

Sending aggregates that summarize the AS s address space.

Sending MEDs to influence ingress traffic from peers.

Preventing unwanted NLRI from entering the A

75. Click the exhibit.

For the inter-AS model B VPRN, which of the following is the correct BGP configuration on ASBR1?

Option A

Option B

Option C

Option D

76. After the "disable-learning" command has been executed at the VPLS level, a new client device originates a frame.

What is the result?

If the MAC address of this new client device does not reach the upper limit of the configured total number of MAC addresses allowed in the VPLS forwarding database, then the new MAC address will be stored.

The new source MAC addresses will not be entered in the VPLS service forwarding database.

New local source MAC addresses will not be entered in the VPLS service forwarding database, but new remote MAC addresses would continue to be entered.

New remote source MAC addresses will not be entered in the VPLS services forwarding database, but new local MAC addresses would continue to be entered.

77. Click the exhibit.

Routers RR1 and RR2 are configured as route reflectors.

For the inter-AS model C VPRN, which of the following about the BGP sessions established between the routers is TRUE?

ASBR2 has a total of three BGP sessions established: one with PE2, one with RR2, and one with ASBR1.

RR1 has a total of three BGP sessions established: one with PEL one with RR2, and one with ASBRL

PE2 has a total of two BGP sessions established: one with RR2 and one with ASBR2.

PE1 has a total of two BGP sessions established: one with RR1 and one with PE2.

78. Which single command will verify the state of auto-bind, the configured Route Distinguisher and Route Target, in addition to the SAP and SDP bindings for a particular service on an Alcatel-Lucent 7750 SR?

Show service all

Show service id <service-id> detail

Show service id <service-id> base

Show service id <service-id> bindings

Show service sap-using

79. What are the benefits of a hierarchical VPLS architecture? (Choose 3)

Increases scalability

Reduces the FDB size within a VPLS instance

Reduces replication and bandwidth utilization from the MDU device to the core network

Easier to manage

Reduces the routing table size

80. A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100.

Which route will appear in the RIB-out?

Only the first route will appear in the RIB-Out.

Only the second route will appear in the RIB-Out.

Only the third route will appear in the RIB-Out.

All routes will appear in the RIB-Out.

Page 9 of 16

81. Click the exhibit button below.

Given the slope-policy (below), which of the following statements are TRUE? (Choose two)

All out-of-profile traffic will be dropped before that of any in-profile traffic.

The discard probability slope of an in-profile traffic is steeper than that of an out-of-profile traffic.

When the shared buffer utilization reaches 55%, both in-profile and out-of-profile packets may be dropped.

The maximum probability with which an out-of-profile packet can be dropped is higher than that of an in-profile packet.

When the shared buffer utilization is at 61%, only in-profile packets are currently in the shared buffer pool.

82. Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?

Option A

Option B

Option C

Option D

83. Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. AS 65541 is advertising prefix 192.168.1.0/27 into BGP.

Which routers have the BGP update for the advertised prefix in their BGP table?

Routers R1, R2, R3, R4 and R5.

Routers R1and R4 only.

Routers R1, R2, R3 and R4 only.

Routers R1, R4 and R5 only.

84. On the Alcatel-Lucent 7750 SR, which of the following QoS-related policies can be configured on a SAP? (Choose three)

The slope-policy

The SAP-ingress policy

The SAP-egress policy

The network-queue policy

The scheduler-policy

85. Click the exhibit.

When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C.

What action is taken by router B when it receives the update?

Router B propagates the BGP update to routers D and

Router B propagates the BGP update to router

Router B detects duplicates in its BGP database and discards the update.

Router B propagates the update to routers A, C and

86. How is MAC learning achieved in traditional Ethernet switches?

As frames leave the switch, the DA is populated into the FD

As frames enter the switch, the DA is populated into the FD

As frames leave the switch, the SA is populated into the FD

As frames enter the switch, the SA is populated into the FD

87. Which of the following are possible criteria for classifying packets at the network port ingress on the Alcatel-Lucent 7750 SR? (Choose three)

The EXP bits in the MPLS header.

The packet's source and destination IP addresses.

The packet's DSCP bits.

The dot1p bits in the frame header.

The ID of an SDP that is transporting the packet.

88. When an Alcatel-Lucent 7750 SR receives a BGP update containing an AS-Path loop, what is the default action?

The update is accepted and the route installed in the route table.

The update is accepted but the route will not be installed in the route table

The update is rejected

The peer session is dropped

89. Which of the following is a true statement?

The lower the age-time, the greater the amount of flooding

The higher the age-time, the greater the amount of flooding.

The lower the age-time, the lower the amount of flooding.

There is no relationship between the age-time and the amount of flooding.

90. Click the exhibit.

Internet access using route leaking between the VRF and the global routing table is configured in the network.

Which of the following is the correct output of route 192.168.50.1 in the global routing table of PE3?

Page 10 of 16

91. Multiple VPLS services can be offered over the same set of LSP tunnels?

TRUE

FALSE

92. Click the exhibit button below.

A network operator has configured a network-queue policy to map forwarding classes to queues, as shown in the exhibit below.

Based on the default scheduling behavior of the Alcatel-Lucent 7750 SR, in which order will packets be serviced?

All in-profile packets in round-robin, then all out-of-profile packets in biased round-robin.

In-profile EF packets, then in-profile H2 packets, then in-profile AF packets, then out-of-profile EF packets, then out-of-profile H2 and AF packets, and then out-of-profile BE packets.

In-profile EF, H2 and AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

In-profile EF packets, then in-profile H2 and AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

In-profile EF and H2 packets, then in-profile AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

93. What is the name of the feature supported on the Alcatel-Lucent 7750 SR that prevents MAC explosion in large VPLS deployments?

H-VPLS

M-VPLS

PBB

MC-EP

94. How was standard BGP modified to allow it to carry routing information for VPRNs?

By using the MED attribute to carry the OSPF metric.

By defining Extended Communities for use as the Route Target

By using the Cluster List attribute to carry the network prefix

By defining support for the VPN-IPv4 address family

By adding an additional field to the BGP Update to carry the VPRN label

95. Which of the following statements are TRUE regarding the PE device in a QoS enabled network? (Choose two)

A device that provides no differentiation between customer traffic flows.

A device that classifies and marks customer traffic.

A device that uses MPLS EXP bits to differentiate between traffic flows.

A device that creates macroflows towards the core from multiple customer sites.

A device that passes macroflows while optionally changing QoS markings.

96. Which of the following statements describe the primary objectives of the policing of traffic flows on the Alcatel-Lucent 7750 SR? (Choose two)

Ensure that traffic flows conform to their traffic profile.

Log violations of metered traffic flows exceeding the CIR value set on the entity across which the traffic is moving.

Provide fairness between traffic flows, so that conforming (in-profile) traffic flows are not starved of bandwidth and/or buffer space by non-conforming (out-of-profile) flows.

Minimize packet loss and reduce end to end latency.

Ensure that variable latencies do not cluster short bursts of originally conforming packets and render them nonconforming.

97. Click on the exhibit below.

Study the diagram shown.

What consideration should be given to the transport tunnel of SDP 300?

The SDP must be configured to use GRE encapsulation.

The SDP must follow the same path as the user's SD

The SDP should be configured to use an RSVP signaled transport with fast reroute.

The SDP must be the same as the user's SD

98. Which of the following are required for an operational mesh-sdp binding for bidirectional traffic when signaling is enabled within the SDP? (Choose 3)

LDP must be enabled.

RSVP must be enabled.

An SDP must be configured on the far-end.

Service MTU must match.

SDP ID must match.

99. In the image shown above, the network QoS policy is applied properly to a Nokia 77S0 SR acting as a transit Label Switch Router (LSR) for a given MPLS tunnel. A packet is received inside the MPLS tunn el with EXP=5, dotlp=0, and DSCP=EF.

Which forwarding class is assigned to this packet?

100. What kind of BGP attribute is the Multi_Exit_Disc?

Optional transitive attribute.

Optional non-transitive attribute.

Well-known mandatory attribute.

Well-known discretionary attribute.

Page 11 of 16

101. Which of the following are examples of metrics for QoS?

Signal degradation, attenuation, line loss

Latency, FIFO, WRED

Delay, jitter, packet loss

SNR, queue depth, latency

Attenuation, dispersion, latency

102. Which protocol is used to signal the status of the active links between the PE and the CE in MC-LAG?

MSTP

MCLAG

LACP

DHCP

A proprietary protocol

103. If a packet is marked on a SAP-ingress, it will be remarked at the first network egress point (if remarking is enabled in the network egress policy).

TRUE

FALSE

104. In a VPRN, what type of logical topology is required for the BGP sessions configured in the provider core?

Full mesh between all CE, PE and P devices

Full mesh between PE and P devices

Full mesh of P devices

Full mesh of PE devices

Full mesh between PE and CE devices

105. Click the exhibit.

Assuming that the as-override command is used, what is the most likely location of prefix 10.1.2.0/24?

The prefix is located in an Autonomous System directly connected to this router.

There is a single Autonomous System between the local AS and the AS that originated the prefix.

There are two Autonomous Systems between the local AS and the AS that originated the prefix.

The prefix is located in Autonomous System 65100.

106. A provider core consists of 4 PE and 2 P routers. A fully meshed VPRN service is configured on all 4 PEs, and MPLS LSP-based SDPs are used for the service configuration.

How many SDPs must be bound to the VPRN service on each PE?

Two SDPs must be bound to the VPRN service on each P

Three SDPs must be bound to the VPRN service on each P

Five SDPs must be bound to the VPRN service on each P

Twelve SDPs must be bound to the VPRN service on each P

107. Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider.

If CE1 sends an IP packet to 192.168.200.1, which of the following is FALSE?

PE1 pushes a VPN label, a BGP label, and an LDP transport label on the IP packet.

CSC-CE1 pops the LDP label and swaps the BGP label.

CSC-PE1 pops the BGP label, swaps the VPN label, and pushes an LDP transport label.

CSC-PE2 pops the LDP and VPN labels and pushes a BGP label.

108. Click the exhibit.

The headquarter sites of VPRN 10 and VPRN 20 are part of an extranet VPRN.

Which route targets should be exported under the VPRN 20 service on router R1?

target: 65100:2 and target: 65100:3

target: 65100:1 and target: 65100:2

target: 65100:1 and target: 65100:3

target: 65100:1, target: 65100:2 and target: 65100:3

109. Click the exhibit.

An Alcatel-Lucent 7750 SR is to be configured as a core router that supports VPRNs using LDP as the transport protocol.

Which of the following best describes this configuration?

This configuration is correct and complete.

This configuration is correct, but the interfaces must also be configured in the "configure router mpls" context.

There is no configuration required for LDP in the core network.

This configuration is correct but Targeted-LDP is also required.

110. Which of the following statements regarding the Internet is FALSE?

It is a global network relying on interconnections provided by Internet service providers.

It is a continuous and interconnected set of public IP networks, advertised and shared across the globe.

It is a settlement-free global network that provides interconnection between Internet service providers.

It is a network that allows any Internet service provider to reach every other Internet service provider in the world.

Page 12 of 16

111. Fill in the blank for this next sentence. Flooded traffic received on any ____________ in the service is replicated to other spoke SDPs and SAPs and not transmitted on any mesh SDPs.

Spoke SDP

Mesh SDP

Either (a) or (b) will make this sentence true.

Neither (a) nor (b) will make this sentence true.

112. Click the exhibit button below.

Traffic arriving at router PE 1 is marked with a dot1p value of 4.

Given the network policies applied on the routers in the diagram below, what is the EXP value of packets arriving at router PE 2? Note: Only relevant portions of the network policy are shown.

None of the above.

113. Based on the default settings for the Alcatel-Lucent 7750 SR, when a policy change is made and committed, what action is required by the user for the change to take effect?

Execute a command to re-evaluate all routes in the Local-RIB against the configured export policies.

Execute a command to re-evaluate all routes in the RIB-In against the configured import policies.

Execute a command to reset the BGP session with the affected peer or peers.

No further action is required.

114. Click the exhibit button below.

Given the scheduler-policy (below), which of the following can be done to guarantee that the best-effort traffic receives its configured CIR value?

Change the CIR-level value for the best-effort queue to 8.

Do not change anything; it is already guaranteed to receive its CIR

Change the CIR-level value for the best-effort queue to 1.

Change the CIR-weight value of the AF queue to 0.

115. A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS path of 65600 65300 and a local preference of 200.

Which route will appear in the RIB-In?

Only the first route will appear in the RIB-In.

Only the second route will appear in the RIB-In.

Only the third route will appear in the RIB-In.

All routes will appear in the RIB-In.

116. The following question relates to this command syntax: "config>service# vpls 9000 customer 6 create".

Which of the following statements are correct? (Choose 2)

The customer-id in this command is 9000.

The service-id in this command is 9000.

This value 9000 should be unique across the network as a best practice.

The vc-id will be 6 for the service by default.

The egress vc-label will be 9000.

117. What mechanism allows routes to be shared between customers in different VPRNs?

The routes to be shared are identified by common route targets

The routes to be shared are identified by common route distinguishers

The routes to be shared are identified by common AS numbers

The routes to be shared are identified by common VPN labels

118. Which of the following statements are TRUE regarding the remarking of packets arriving on the network interface whose ToS-marking-state is set to trusted and remarking enabled on network egress? (Choose two)

Native IP Packets will not be remarked.

Native IP Packets will be remarked.

Packets associated with a VPRN service on an upstream node will not be remarked.

Packets associated with an ES service on an upstream node will be remarked.

119. On an Alcatel-Lucent 7750 SR, which CLI command displays the Route Target(s) associated to a prefix?

Show router bgp routes

Show router route-table summary

Show router bgp routes vpn-ipv4 detail

Show router route-table

120. Which of the following about inter-AS model B VPRN is FALSE?

Model B does not require the configuration of VPRN instances on ASBRs.

The ASBRs peer with each other to transport VPN-IPv4 routes between autonomous systems.

PE routers distribute VPN-IPv4 routes to their local ASB

One single ASBR is required in each AS to hold the routes for all VPRNs.

Page 13 of 16

121. Click the exhibit.

Routers C and E are route reflectors.

When the update for prefix 192.168.2.0/24 is received at router F, what will be the Originator_ID attribute?

The router ID of router

It will not be set.

122. Click on the exhibit below.

Assume there are two VPLS services configured on the MDU.

How could load-balancing be achieved when using Active/Standby pseudo wires?

This cannot be done.

Each VPLS will use the same pair of SDP's with the same endpoint configured with the option "load-balancing 2".

Each VPLS will need their own pair of spoke-SDP's configured. The spoke-sdp's that are to be active should be configured with the option "precedence primary".

Under the end-point configuration, enable load-balancing 2 and the MDU will load balance automatically.

123. On a PE router, the VRF table for VPRN 10 contains: one local route, two BGP routes learned from a local CE. and three tunneled routes learned from a remote site.

If we execute the command "configure service vprn 10 maximum-routes 2 log-only" on this PE router, how many routes are expected to be in the VRF?

Five routes: the local route, the two BGP routes learned from the local CE, and two tunneled routes.

Six routes: the local route, the two BGP routes learned from the local CE, and three tunneled routes.

Two routes: the local route and one tunneled route.

Three routes: the local route and two tunneled routes.

Two routes: the local route and one BGP route learned from the local C

124. What must be enabled in order to prevent a loop within a LAG?

RSTP

Dynamic-cost

LACP active

Nothing, There are no loops in LAGs

125. Which of the following describes the scope of the IEEE 802.3ah EFM standard? (Choose 3)

Monitor and troubleshoot a point-to-point full-duplex link.

Monitor and troubleshoot end-to-end services.

Can be used at the core to trigger MPLS protection mechanisms when a physical failure detection is not possible.

Should not be used at the core to trigger MPLS protection. BFD is the only method that can be used when physical failure detection is not possible.

Valuable in the last-mile connection to the Service Provider demarcation device.

126. Click the exhibit.

Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP 2?

The update is sent to router R2 in ISP 1.

The update is sent to routers R2 and R3 in ISP 1.

The update is sent to all routers in ISP 1.

The update is sent to routers R2 and R3 in ISP 1, and to router R3 in ISP 2.

127. Which of the following about the Route Target is TRUE?

The Route Target is added to an IPv4 route to create the VPN-IPv4 route.

The Route Target is an extended community string that identifies VPN membership.

A route can have only one Route Target.

The Route Target is a 64-bit value added to customer prefixes to make them unique.

128. What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-Lucent 7750 SR?

All BGP routes are accepted.

All routes matching prefix lists "List-1" and "List-2" are rejected.

BGP routes matching prefix lists "List-1" or "List-2" are rejected.

BGP routes matching prefix lists "List-1" and "List-2" are rejected.

129. The "discard-unknown" command has been enabled at the VPLS level.

Which of the following statements is true? (Choose 2)

Broadcast traffic will be flooded.

If the unicast SÁ has not been learned in the FDB, the frame will be dropped.

If the unicast DA has not been learned in the FDB, the frame will be dropped.

All traffic will be dropped, including multicast and broadcast.

Broadcast traffic will be dropped.

130. What is the default remote-age timer of a B-VPLS?

The same timer is used in all VPLS types.

Higher than the default timer of an I-VPL

Lower than the default timer of an l-VPL

The same timer as an l-VPL

Page 14 of 16

131. You are providing a customer two VPLS services in two different Metro networks. VPLS 500 has been configured in Metro 1 and VPLS 900 has been configured in Metro 2. The customer has requested that they have connectivity between the Metro Networks with their existing VPLS services.

Which configuration on the PE routers linking the metro networks will allow for VPLS 500 and VPLS 900 to act as a single VPLS service? Assume default values for all VPLS parameters and SDP 999 exists between the metro networks.

Option A

Option B

Option C

Option D

132. Why would a selective export policy be applied to a customer VPRN service? (Choose three)

To limit the number of routes advertised from a customer site

To limit the number of routes learned from other customer sites CTo limit the size of the VRF table

To limit connectivity to selected customer networks

To perform packet filtering

133. Which of the following is NOT a benefit of using a spoke SDP in an H-VPLS design?

Simplifies signaling.

Reduces core's forwarding database size.

Simplifies MDU configuration.

Enables a scalable inter-domain solution.

134. Router R1, in AS 65540, has the export policy shown below. It advertises an aggregate route to eBGP peer router R2 in 65550.

What is the AS Path of the aggregate route received by router R2?

65540

65540 1

65540 65540

65550 65540

135. Click the exhibit.

Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions.

Which of the following configurations is required on router A so that router B can exchange traffic with router D?

Option A

Option B

Option C

Option D

136. Click on the exhibit below.

The MDU attached to this PE has been configured with active/standby SDP's configuration option has been configured for the PE to recognize that this SDP is in standby mode?

On the PE the endpoint has been configured with "supress-standby-signalling"

On the PE the endpoint has been configured with "no supress-standby-signalling"

On the MDU the endpoint has been configured with "supress-standby-signalling"

On the MDU the endpoint has been configured with "no supress-standby-signalling1

137. Click the exhibit.

If the displayed command is executed, what is the correct value of AS-Path in the BGP route 172.12.0.0/16 advertised by PE2?

64491 {64492 64493}

64491

64492 64493 64491

{64492 64493)64491

138. Which of the following statements regarding the default scheduler in the Alcatel-Lucent 7750 SR are TRUE? (Choose two)

There are a maximum of 8 levels of priority serviced using a round-robin algorithm.

The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present

The H1 internal forwarding class will receive its CIR before AF traffic.

Orphaned queues will be scheduled out of the BE queue.

A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.

139. A LAG is configured with LACP passive mode enabled. When will LACP packets be sent?

On initialization and then every hello-interval.

Only after receiving LACP packets.

Every 1 second.

Never.

140. Which of the following rate-limiting approaches are used on the Alcatel-Lucent 7750 SR? (Choose two)

Shapeless policing at SAP-ingress only.

Shapeless policing at SAP-ingress and egress.

Biased round robin queuing at ingress only.

Soft shaping at all network interfaces.

Soft shaping at network ingress only.

Page 15 of 16

141. Consider two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system address 10.10.10.1, and router R2 has system address 10.10.10.2.

Which of the following configurations on router R2 can establish a BGP session with router R1?

Option A

Option B

Option C

Option D

142. When ports configured with IEEE 802.3ah EFM are operationally down, what must the device do before declaring the ports are up?

The device will try to force the other side up using the evaluating flag in the PD

The device will wait for the trasmit-interval of 5 before trying to rediscover the neighbor.

The device will detect the port change and will wait for normal operation mode.

The device will detect the port change and revert to discovery mode.

143. Which of the following is an advantage of using shaping instead of policing?

Shaping does not add latency.

Shaping does not add jitter.

Shaping protects downstream nodes from traffic bursts.

Shaping requires less memory to buffer packets.

144. How is it possible for multiple services to be carried over the same MPLS LSPs?

Multiple SDPs must be configured and bound to the LSPs for this to be possible.

It is not possible to carry multiple services over the same MPLS LSPs.

A vc-label is signaled per service.

The vc-id is part of the data plane and maps the traffic to the appropriate service.

145. Click the exhibit button below.

Given that the slope-policy (below) has been enabled and applied on a network port, which of the following statements are TRUE? (Choose three)

All out-of-profile traffic will be dropped before any in-profile is dropped.

The time average factor of 0 will discard all packets arriving in the shared buffer pool.

When the shared buffer utilization reaches 51%, in-profile packets might be dropped.

The highest probability with which an out-of-profile packet can be dropped is 20%.

When an in-profile packet arrives and the shared buffer utilization is at 69%, the packet will have approximately a 60% likelihood of being discarded.

146. Which of the following statements about an autonomous system is FALSE?

An AS is a set of routers under a single technical administration.

An AS efficiently advertises all IGP known routes to other ASs.

An AS presents a consistent routing policy to other autonomous systems.

An AS has a 2-byte or 4-byte AS number assigned.

147. In which of the following scenarios is self-generated traffic QoS (sgt-QoS) useful?

EXP markings on transit control traffic are not set correctly.

The priority of all self-generated traffic needs to be lowered to allow all other traffic to take precedence.

The priority of various control packets requires special treatment throughout the network.

The BGP process is consuming too many CPU cycles and is impacting OSPF performance.

148. Which of the following about inter-AS model B VPRN is TRUE?

The ASBRs use MP-eBGP to peer with each other and exchange IPv4 routes between autonomous systems.

The ASBRs use MP-iBGP to peer with PE routers in their autonomous system and exchange VPN-IPv4 routes.

The ASBRs maintain a mapping of labels for IPv4 routes exchanged between autonomous systems.

The ASBRs require per-VPRN configuration.

149. Which of the following terms also correctly describes a Layer 3 VPN?(Choose three)

VPRN

BGP/MPLS VPN

VLL

VPLS

IP-VPN

ePipe

150. Which of the following statements regarding scheduling are TRUE? (Choose two)

Scheduler policies cannot be children of an egress port-scheduler.

HQoS provides a static method of allocating scheduling resources to each queue and/or child.

Scheduler policies can be applied to the MDA to schedule network ingress traffic.

Every time a scheduler-policy is assigned to a SAP, a new hardware scheduler is created to service the SA

A scheduler applied to multiple SAPs within the same service will result in a single hardware scheduler operating across all SAPs within the service.

Page 16 of 16

151. Consider a large metro-to-metro VPLS network interconnected with a mesh of mesh-SDPs.

Which of the following statements does NOT apply to this situation?

Bandwidth and replication inefficiency can occur on inter-metro links if there is a lot of multicast traffic

The number of control sessions grows exponentially in a fully meshed network.

Spanning-tree is required to prevent loops when using mesh SDPs on the inter-metro links.

Network touches increase with each node added to the mesh.

152. A router in AS 65100 receives two BGP routes. The first route is for 138.1.1.0/24 with an AS Path of 65200 65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The second route is for 138.1.0.0/16 with an AS Path of 65500 65300, Local Preference of 150, MED of 100, and router ID 10.1.1.1.

Assuming all other attributes are equal, which route would be used to forward an IP packet with destination IP address 138.1.1.1?

The first BGP route.

The second BGP route.

Both routes are used.

It is impossible to determine without the value of the origin code for both routes.

153. What of the following is a key benefit of Active/Standby pseudowires?

The MDU does not need to support MPL

Can be used in ring networks of 4 or more nodes

Does not require the use of a layer 2 loop prevention protocol such as RSTP

The MDU does not have to be aware of the active/standby configuration

154. Traffic assigned to forwarding classes is placed into queues, while the contents of the queues are serviced in a controlled manner using____________.

WRED

shapers

schedulers

markers

weighted fair queues (WFQ)

155. Click the exhibit.

AS 65550 owns the CIDR block 10.64.0.0/12. Router R4 advertises the aggregate 10.64.0.0/12 to AS65540.

Which of the following is TRUE regarding the aggregate route advertisement?

The aggregator attribute will not be present, and the atomic aggregate flag will not be set.

The aggregator attribute will not be present, and the atomic aggregate flag will be set.

The aggregator attribute will be present, and the atomic aggregate flag will ot be set.

The aggregator attribute will be present, and the atomic aggregate flag will be set.

156. The FDB has learned 2 MAC addresses. The first is from a device accessible via a locality defined SAP, the second is from a device accessible via an SDP. Both MAC addresses were learned at the exact same time.

If all traffic from these hosts stops at the same time, which address will age out first from the FDB based on default settings?

MAC learned via SAP

MAC learned via SDP

There is not enough information to determine

Both will timeout at the same time

157. Which command is used to generate the output from an Alcatel-Lucent 7750 SR shown below?

Show service 3

Show service id 3

Show service 3 base

Show service id 3 base

Show service 3 detail

Show service id 3 detail

158. A physical port has three associated buffer pools.

Which of the following buffer pool combinations is associated to a physical port?

Access ingress, access egress, network egress

Access ingress, network ingress, network egress

Port ingress, port egress, shared bi-directional

Port ingress, port egress, network egress

Port ingress, network ingress, network egress

159. Click on the exhibit below.

CE-A sends frames with 2 tags.

If the SAP on PE-A is "sap 1/1/1:1.*" and the SAP on PE-B is "sap 1/1/1:100.200" how many tags will there be on the frame when it egresses from the SAP on PE-B?

160. Which of the following must be true in order to add a port to a LAG? (Choose 2)

ports must be on the same MDA

ports must have the same speed and duplex settings

auto negotiation must be on

auto negotiation must be off or limited

port must be in access mode only