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Question # 4

You are configuring an MX Series router to act as a Layer 3 gateway to route traffic between VXLANs in different data centers across a WAN connection. In this scenario, what must you do to enable this communication?

A.

Configure route reflectors.

B.

Change the UDP port used by the VXLANs.

C.

Configure the IRB interfaces to connect the VXLANs.

D.

Enable PIM on all interfaces.

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Question # 5

Referring to the exhibit,

what effect does EVPN core isolation have?

A.

Leaf 1 will send a pause frame to each connected host.

B.

Leaf 1 will place the interfaces to connected hosts into LACP passive mode.

C.

Leaf 1 will take down all revenue interfaces.

D.

Spine 1 will block all traffic.

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Question # 6

Which feature permits granular control of per-VNI type-2 and EVPN type-3 routes across an entire overlay network?

A.

route target

B.

remote VTEP

C.

Ethernet segment

D.

route distinguisher

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Question # 7

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.)

A.

Use multipath multipath-As

B.

Use multihop

C.

Use advertise inactive

D.

Use a load-balancing policy applied to the forward table

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Question # 8

Which protocol replicates forwarding information between MC-LAG peers?

A.

VCCP

B.

ICCP

C.

VRRP

D.

LLDP

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Question # 9

You must advertise reachability between two firewalls with unique IP subnets that terminate security services through your EVPN-VXLAN environment.

In this scenario, which EVPN route type should you enable to accomplish this task?

A.

type-4

B.

type-2

C.

type-5

D.

type-3

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Question # 10

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

A.

Layer 2 data must traverse a point-to-point

B.

Layer 2 data must traverse an MPLS LSP.

C.

Layer 2 data must be encapsulated.

D.

Layer 3 data must be encapsulated

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Question # 11

You are considering deploying a MAC-VRF type routing instance with a VLAN-bundle service

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

A.

It can be implemented in a bridge overlay architecture.

B.

VLAN normalization is supported.

C.

Multiple VLAN IDs per EVI are supported.

D.

It can be implemented in an ERB architecture.

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Question # 12

You are asked to deploy 20 QFX Series devices using ZTP Each QFX5 100 requires FTP server. In this scenario, which two component must you configure on the DHCP Server? (Choose two.)

A.

The MAC address of the FTP server

B.

The IP address of the FTP server

C.

The MAC address of each QFX5100

D.

The MAC address of each FTP QFX5100

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Question # 13

You are evaluating which method to use for learning MAC addresses in your VXLAN network. Which statement is true in this scenario?

A.

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

B.

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

C.

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

D.

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

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Question # 14

You are designing an IP fabric underlay network in your data center. You must ensure that your traffic can be forwarded at line rate.

In this scenario, which oversubscription model should be used?

A.

2:1 oversubscription

B.

1:2 oversubscription

C.

3:1 oversubscription

D.

1:1 oversubscription

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Question # 15

Referring to the exhibit, you want to advertise the IRB routes between both routing instances.

Which two configuration parameters would be applied to accomplish this task? (Choose two.)

A.

Apply policy irb-A under instance Tenant_c and apply policy irb-c under instance Tenant_A as import policies.

B.

Configure auto-export under both routing instances.

C.

Configure vrf-table-label under both routing instances.

D.

Apply policy irb-A under instance Tenant A and apply policy irb-c under instance Tenant_c as export policies.

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Question # 16

Which protocol is used between VCF member devices to create a loop-free topology?

A.

LLDP

B.

MDTP

C.

RSTP

D.

VCCP

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Question # 17

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?

A.

Configure auto-export under the routing instance.

B.

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

C.

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

D.

Configure vrf-table-label under the routing instance.

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Question # 18

You are implementing a second data center and must have some of your VLANs active in both data centers. You must provide high availability, fast reconvergence, and avoid tromboning traffic on these VLANs.

In an over-the-top DCI strategy, which two statements are correct? (Choose two.)

A.

A single type-5 route for the subnet must be advertised from both data centers.

B.

The VLAN ID and VNI must be the same in both data centers for these VLANs.

C.

The VLAN ID must be the same in both data centers, but the VNI can be different.

D.

A type-5 route for each host must be advertised from the data center where the host resides.

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Question # 19

You are configuring an EVPN overlay network. You want to ensure that leaf devices can respond

to ARP requests from locally connected hosts, when the leaf device knows the MAC of the intended destination.

In this scenario, what should you configure on the leaf devices to accomplish this task?

A.

Proxy ARP

B.

Static ARP entries

C.

Persistent MAC learning

D.

IGMP snooping

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Question # 20

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?

A.

PIM Join

B.

PIM Register message

C.

IGMP Join (S, G)

D.

IGMP Join (*.G)

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Question # 21

You are troubleshooting a problem with traffic not reaching a remote VTEP. Referring to the

exhibit, what is the reason for the problem?

A.

A conflict exists with the VLAN-to-VNI mapping.

B.

The local VTEP is misconfigured with the wrong VNI.

C.

No VTEP is configured on peer 192.0.2.20.

D.

The remote VTEP does not have the correct VNI configured.

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Question # 22

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?

A.

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

B.

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

C.

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

D.

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

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Question # 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?

A.

storm control

B.

Ethernet segment auto discovery

C.

MAC filtering

D.

MAC mass withdrawal

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Question # 24

Referring to the exhibit, which statement is correct?

A.

Leaf1 has not learned any MAC addresses

B.

Leaf3 is the remote tunnel endpoint.

C.

One tunnel is servicing multiple VLANs

D.

Spanning Tree Protocol is disabled

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Question # 25

What is the endpoint of a VXLAN tunnel?

A.

DLCI

B.

VTEP

C.

LSR

D.

VCF

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Question # 26

You are asked to deploy an Ethernet bridging design in a data center with the criteria shown

below.

-Routing must occur on the spine devices.

-VTEPs must terminate on the leaf devices.

-Facilitate inter-VLAN communication.

-Layer 2 gateways must be present on spine and leaf devices.

Which architecture should you use in this scenario?

A.

edge-routed bridging architecture

B.

centrally-routed bridging architecture

C.

bridge overlay architecture

D.

collapsed spine architecture

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Question # 27

Which two statements about the seamless EVPN-VXLAN stitching interconnect gateways are correct? (Choose two.)

A.

IBGP is recommended for VXLAN stitching overlays.

B.

Interconnect gateways will rewrite the route target, route distinguisher. and ESI values for each stretched virtual network.

C.

All EVPN routes types are forwarded among interconnect gateways in a full-mesh manner.

D.

The interconnect gateway can reside on the super spine layer of a multi-POD data center.

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Question # 28

You want to ensure high availability of the Junos devices in your data center. In this scenario, which three features would accomplish this task? (Choose three.)

A.

Multiple Spanning Tree Protocol

B.

Virtual Router Redundancy protocol

C.

graceful Routing Engine switchover

D.

Dual Routing Engineers

E.

Virtual private LAN service

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Question # 29

You are asked to configure JTI on the QFX Series devices in your data center fabric. You must use sensors with the least amount of latency. Which type of sensor should you use in this scenario?

A.

Python sensors

B.

JTI native sensors

C.

analog sensors

D.

JTI OpenConfig sensors

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Question # 30

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?

A.

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

B.

Enable the multipath multiple-as BGP parameter.

C.

Enable the routing-options multipath global parameter.

D.

Enable the chassis ecmp-alb parameter.

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Question # 31

Site 1 contains 20+ VMs. The link between Site 1 and Leaf1 goes down.Referring to the exhibit, which statement is correct?

A.

Type-1 routes for each VM will expire one at a time.

B.

Type-1 routes for all VMs in the site will expire all at once.

C.

Type-1 routes for all VMs in the site will be withdrawn all at once.

D.

Type-1 routes for each VM will be withdrawn one at a time.

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Question # 32

You are asked to configure your IP fabric with OSPF as the underlay routing protocol.

Which two statements are correct about this implementation? (Choose two.)

A.

Each host-connected interface of the leaf node is included as passive in the OSPF configuration.

B.

Each host-connected interface of the leaf node is included in the OSPF configuration.

C.

Each spine-connected interface of the leaf node is included as passive in the OSPF configuration.

D.

Each spine-connected interface of the leaf node is included in the OSPF configuration.

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Question # 33

Which two statements describe MAC address learning for VPLS and EVPN? (Choose two.)

A.

VPLS learns MAC addresses in the data plane

B.

EVPN learns MAC addresses in the data plane

C.

EPLS learns MAC addresses in the control plane

D.

EVPN learns MAC addresses in the control plane

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Question # 34

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?

A.

collapsed spine architecture

B.

edge-routed bridging architecture

C.

bridge overlay architecture

D.

centrally-routed bridging architecture

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Question # 35

What is the purpose of the command shown in the exhibit?

A.

To stop the reception of transit multicast traffic when there are no interested receivesattached to the local VTEP

B.

To disable the group2390.0.1 across the entire VXLAN.

C.

To stop the transmission of transit multicast traffic when there are no interested receives attached to a remote VTEP

D.

To disallow IGMP request for the group 239.0.01 from host attached to the local VTEP

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Question # 36

You are designing a network for a small data center. In this scenario, which underlay protocol

allows for the simplest implementation?

A.

EBGP

B.

OSPF

C.

IGGP

D.

MPLS

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Question # 37

You are logged in to Leaf 1. When examining the routing table, you notice that you have no

routes from Leaf 2.

Referring to the exhibit, which two commands would you use to troubleshoot the problem? (Choosetwo.)

A.

From Leaf 2, issue the show route advertising-protocol bgp 172.16.1.2 command.

B.

From Spine 1, issue the show route advertising-protocol bgp 172.16.1.1 command.

C.

From Spine 1, issue the show route advertising-protocol bgp 172.16.1.2 command.

D.

From Leaf 1, issue the show route receive-protocol bgp 172.16.1.1 command.

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Question # 38

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

A.

Ethernet segment router

B.

IP prefix route

C.

Ether auto discovery route

D.

Inclusive multicast-Ethernet tag route

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Question # 39

Exhibit.

Referring to the output shown in the exhibit, which two statements are correct? (Choose two.)

A.

Gateway2 is the backup forwarder.

B.

Gateway2 drops unknown unicast traffic from the core destined to the edge device.

C.

Gateway2 is responsible for sending unknown unicast traffic from the core to the edge device.

D.

Gateway2 is the designated forwarder.

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Question # 40

You have successfully deployed an IP fabric in your data center. However, your server team complains that they are not seeing an increase in performance as expected. After examining the routing and forwarding tables, you notice that only a single route is listed to each destination in the forwarding table, even though there are multiple routes shown in the routing table.

In this scenario, what should you do to solve the problem?

A.

Write a load balancing policy and apply it to the routing table.

B.

Modify the hash algorithm so that only source and destination addresses are used.

C.

Write a load balancing policy and apply it to the forwarding table.

D.

Disable the Spanning Tree Protocol that is blocking the redundant paths.

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Question # 41

What are the two valid types of VXLAN signaling?(Choose two.)

A.

EVPN

B.

RSVP

C.

RSTP

D.

MPLS

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Question # 42

Which two statements are true about VRF routing instances? (Choose two.)

A.

VRF can be used in conjunction with Layer 3 logical interfaces.

B.

Each logical Layer 3 interface can belong to only one routing instance.

C.

Each logical Layer 3 interface can belong to multiple routing instances.

D.

VRF does not enable multitenancy.

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Question # 43

You are asked to enable visibility into your EVPN-VXLAN network traffic by monitoring traffi

continuously. Which two statements are correct in this scenario? (Choose two.)

A.

You cannot enable sFlow monitoring on each interface individually.

B.

The sFlow agent is installed by default on your OFX Series switch.

C.

You must enable sFlow monitoring on each interface individually.

D.

The sFlow agent needs to be manually installed on your QFX Series switch.

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Question # 44

You are troubleshooting a connectivity issue across a VXLAN overlay network. In the exhibit, you are using the ping overlay command from a local VTEP residing on a OFX 5120 to a remote VTEP residing on a separate QFX5120.

What is the problem in this situation?

A.

The VXLAN controller is down.

B.

VXLAN VN1100 is not configured on the local VTEP

C.

VXLAN VN1100 is not configured on the remote VTEP.

D.

VXLAN VN1100 is not configured on both end points.

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Question # 45

You have configured MP-IBGP to support EVPN for your overlay network. However, you are not seeing the expected routes on your edge devices.

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

A.

The family evpn signaling parameter must be configured on the remote peer.

B.

Graceful restart must be disabled for this session

C.

The family 12vpn signaling must be configured on the local peer

D.

The group types on both devices should be set to external

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Question # 46

Which two statements are correct about VXLANs? (Choose two.)

A.

VXLANs have smaller broadcast domains than VLANs.

B.

VXLANs have a smaller logical network identifier than VLANs.

C.

VXLANs can have a theoretical maximum of 16 million unique networks.

D.

VXLANs are an overlay technology.

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