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Page 1 of 4

1. You are asked to manage multicast traffic in the EVPN-VXLAN environment. You must ensure that multicast traffic is delivered only to the leaf device with interested receivers.

In this scenario, which feature is required on leaf devices to accomplish this task?

PIM

IGMP snooping

MSDP

DVMRP

2. Referring to the exhibit, Host 1 and Host 3 have exchanged traffic.

In this scenario, which statement is true?

Leaf 2 learn Host 1's MAC address through periodic updates from Spine 2

Leaf 2 learn Host 1's MAC address when Host 3 learns Host 1's MAC address.

Leaf 2 learn Host 1's MAC address when Leaf 1 queries Host 1.

Leaf 2 does not learn Host 1's MAC address until Host1 and Host2 send traffic to each other

3. You are asked to deploy an Ethernet bridging design in a data center with the following criteria:

-routing must occur on the leaf devices.

-VTEPs must terminate on the leaf devices.

-facilitate inter-VLAN communication.

-lower latency with East-West traffic.

Which architecture should you use in this scenario?

collapsed spine architecture

edge-routed bridging architecture

bridge overlay architecture

centrally-routed bridging architecture

4. The configuration shown in the exhibit is intended to set up assisted replication but will not commit .

Which action will create a valid configuration in this situation?

Change the 10.0 address to 192.168.100.1 primary.

Change the replicator inet address to 192.168.100.101.

Delete replicator inet 192.168.100.1.

Change the replicator inet address to 192.168.100. 51.

5. What happens when a packet is encapsulated by a VXLAN before being placed in the overlay?

The TTL is decremented by two and placed in the VXLAN header.

The QoS marketing are placed in the VXLAN header.

The VLAN-ID is placed in the VXLAN header.

A VNI that maps to the VLAN-ID placed in the VXLAN header.

6. You are deploying a VXLAN using signaling overlay network in your new data center. You are able to establish your MP BGP peering session and see your EVPN routes, but traffic will not traverse the VXLAN using signaling overlay network.

What is a solution to this problem?

Enable the mtu-discovery feature on the MP peering sessions between VXLAN ANs EVPN signaling peers.

Increase the protocol MTU on all devices participating in VXLAN using EVPN signaling

Increase the MTU on the logical VTEP source interface of all devices participating in VXLAN using EVPN signaling.

Increase the physical MTU on all ports on all devices participating in VXLAN using EVPN signaling.

7. You are building an IP fabric underlay for your data center. You are asked to ensure that the two spine devices are in the same AS (65000) while the six leaf devices are in a different AS (65512).

In this scenario, which two statements are correct by default? (Choose two.)

All BGP routes advertised by a leaf device will be accepted on the spine devices.

A leaf device will accept all BGP routes received from the spine that were originated from another leaf device.

All BGP routes advertised by a leaf device will be rejected on the spine devices.

A leaf device will reject all BGP routes received from the spine that were originated from another leaf device.

8. Which two statements describe a VXLAN network identifier (VNI)? (Choose Two)

A VNI identifies the inner MAC frame.

A VNI identifies a VXLAN segment I

A VNI allows only 512 VLANs.

A VNI validates the remote VTE

9. In the exhibit, VM1 is part of the same VXLAN segment as VM3.

Which type of message will R1 initially send to R2 so that VM1 receives BUM traffic from VM3?

PIM Join

PIM Register message

IGMP Join (S, G)

IGMP Join (*.G)

10. Application developers are complaining that east-west server traffic is not being load balanced in your new data center .

What are three reasons for this behavior? (Choose three.)

BGP multipath is not configured.

Policies for load balancing have not been configured.

MP-BGP is not exporting the correct prefix type.

There is insufficient spine to leaf bandwidth.

ESI active/active has not been configured.

Page 2 of 4

11. You have configured a new MC-LAG connection to a host. After committing the configuration, the MC-LAG link is not functioning properly.

Referring to the exhibit, how would you solve this problem?

Configure a system-id on qfx1 that is different from the system-id on qfx2

Change the mc-ae is on qfx1 to 1

Configure status-control on qfx2 to active

Change the chassis on qfx1 to 1

12. Which statement is true about a Data center interconnect over an IP network?

Layer 2 data must traverse a point-to-point

Layer 2 data must traverse an MPLS LS

Layer 2 data must be encapsulated.

Layer 3 data must be encapsulated

13. Which two statements describes an IP fabric? (Choose two.)

Each leaf should have a connection to each spine.

Open standards allow for vendor interoperability.

Traffic should always follow a single path

xSTP protocols should be used to prevent loops

14. You work in a data center where VMs and hosts are frequently moved. Your design needs to eliminate inefficient traffic flows.

In this scenario, which two solutions will satisfy this requirement? (Choose two.)

VXLAN

EVPN

VMTO

VPLS

15. You are evaluating which method to use for learning MAC addresses in your VXLAN network .

Which statement is true in this scenario?

Multicast exchanges MAC addresses through data plane learning and is more reliable than EVP

EVPN exchanges MAC addresses through control plane learning and is more reliable than multicast.

EVPN exchanges MAC addresses through data plane learning and is more reliable than multicast.

Multicast exchanges MAC addresses through control plane learning and is not more reliable than EVP

16. Referring to the exhibit, each node in the IP fabric is peering to its directly attached neighbor using EBGP. Each node is peering using physical interface IP addresses. Leaf 2 and Leaf 3 are advertising the 10.1.1/24 network into EBGP. Spine 2 must be configured so that it can load- share traffic destined to the 10 1.1/24 network over both next-hop A and next-hop B.

Which two actions must be performed to accomplish this task? (Choose two.)

Use multipath multipath-As

Use multihop

Use advertise inactive

Use a load-balancing policy applied to the forward table

17. You are deploying an EBGP IP fabric. In this scenario, which statement is true?

Each spine should peer with every other spine using physical addresses.

Each spine should peer with each leaf using loopback addresses.

Each spine should peer with every other spine using loopback addresses.

Each spine should peer with each leaf using physical addresses.

18. Which protocol replicates forwarding information between MC-LAG peers?

VCCP

ICCP

VRRP

LLDP

19. You want to enable an EBGP-based IP fabric to allow ECMP routes to be populated into the RIB.

In this scenario, which action will accomplish this task?

Enable the forwarding-options ecmp-do-local-lookup parameter.

Enable the multipath multiple-as BGP parameter.

Enable the routing-options multipath global parameter.

Enable the chassis ecmp-alb parameter.

20. Referring to the exhibit,

you have a data center in which only the spine devices are using EVPN and VXLAN. The leaf nodes are multihomed in active-active mode to the spine nodes through ESI LAG interfaces. In this design, a link failure on the interface connecting the spine nodes would also cause all traffic from the spine to the leaf nodes to drop.

In this scenario, which command configured on which nodes would solve this problem?

the disable protocols evpn no-core-isolation command on the spine nodes

the set protocols evpn no-core-isolation command on the spine nodes

the disable protocols evpn no-core-isolation command on the leaf nodes

the set protocols evpn no-core-isolation command on the leaf nodes

Page 3 of 4

21. Which IP fabric underlay protocol provides the highest degree of scalability?

IS-IS

RIP

EBGP

OSPF

22. Devices spine1 and spine have been configured as distributed Layer 3 gateways in the VXLAN topology, and devices leaf1 and leaf3 have been configured as layer 2 gateways. Device host must be able to communicate with device host?

Which two statements are true? (Choose two.)

An IRB interface must be configured on device leaf1 and leaf2.

An IRB interface must be configured on devices spine1 and spine2.

Traffic from host1 to host2 will transmit the VXLAN tunnel from leaf1 to leaf3.

Traffic from host1 to host will transit a VXLAN tunnel to spine or spine2 then a VXLAN from spine1 or spine2 to leaf 3.

23. You want to improve network convergence within a data center during link failures.

In this scenario, which EVPN-VXLAN feature will accomplish this task?

storm control

Ethernet segment auto discovery

MAC filtering

MAC mass withdrawal

24. Which EVPN router type prevents BUM traffic from looping back to a multihued host?

Ethernet segment router

IP prefix route

Ether auto discovery route

Inclusive multicast-Ethernet tag route

25. You are attempting to configure filter-based forwarding in your data center. All traffic from Host1 that is going to Host2 should be inspected by the data center firewall. You have verified that the traffic is being forwarded from router leaf L1's VRF-1 to its INSPECT-VRF. However, the traffic is not reaching service L2.

Referring to the exhibit, which two steps should you take to troubleshoot the problem? (choose two.)

Examine the INSPECT-VR

evpn 0 route table on L1 for a default route that will direct the traffic to L2.

Examine the INSPECT-VR

inet. 0 route table on L1 for a default route that will direct the traffic to L2.

Ensure that VRF-1 and INSPECT-VRF route targets on L1 and L2 match.

Ensure that the route target in the INSPECT-VRF of L1 matches the route target of the INSPECT- VRF of L2.

26. Referring to the exhibit, you must advertise the Io0.12 interface as a type-5 route.

Which configuration parameter would be used to accomplish this task?

Configure auto-export under the routing instance.

Configure a vrf-export policy to advertise the interface route under the routing instance.

Configure an export policy to advertise the interface route under protocols evpn.

Configure vrf-table-label under the routing instance.

27. Which two characteristics would you consider when selecting spine devices in an IP fabric? (Choose two.)

scaling limitations

spanning tree limitations

port density

data center location

28. You are asked to implement a monitoring and telemetry solution for the QFX Series devices in your IP fabric that uses a push model to collect both system event data and statistical data for your QFX Series devices.

Which technology satisfies your requirements?

JunosXMLAPI

REST API

SNMP

Junos Telemetry Interface

29. You are configuring a DCI VPN solution between sites that require an L3VPN to work with your EVPN deployment. Your organization's policy restricts configuring RSVP and LDP on your WAN links. While configuring the solution, you notice that no routes exist in the inet table.

In this scenario, which parameter will solve this problem?

bgp family inet labeled-unicast per-group-label

bgp family inet labeled-unicast aggregate-label

bgp family inet labeled-unicast resolve-vpn

bgp family evpn signaling

30. A VXLAN has been created between devices leaf1 and Ieaf3.

Referring to the exhibit, which statement is true?

Traffic sent from host1 to host2 will be dropped on Ieaf3.

Traffic sent from host1 to host2 will be tagged with VLAN ID 100 when exiting Ieaf3.

Traffic sent from host1 to host2 will be tagged with VLAN ID 200 when exiting Ieaf3.

Traffic sent from host1 to host2 will be dropped on leaf1.

Page 4 of 4

31. Referring to the exhibit, which statement is correct?

Leaf1 has not learned any MAC addresses

Leaf3 is the remote tunnel endpoint.

One tunnel is servicing multiple VLANs

Spanning Tree Protocol is disabled

32. Referring to the exhibit, which statement is correct?

The exhibit shows a 5-stage IP fabric architecture.

The exhibit shows a collapsed fabric architecture.

The exhibit does not represent a valid fabric architecture.

The exhibit shows a 3-stage IP fabric architecture.

33. Which two statements are true Virtual Chassis? (Choose two.)

By default, Junos switches are in non-mixed mode virtual chassis.

The request virtual-chassis mode fabric reboot command will set the Virtual Chassis to fabric mode with similar devices

By default, Junos switches are in a mixes mode Virtual Chassis

The request virtual-chassis mode fabric reboot command will set the Virtual Chassis to mixed mode.