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JN0-682 Questions and Answers

Question # 6

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 # 7

You have deployed a VXLAN as shown in the exhibit Leaf1, leaf3, spine1, and spine2 have been

configured as VTEPs. Host1 cannot communicate with host2.

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

A.

The VLAN ID on the connected to host2 must be changed to VLAN 100

B.

A DCI connected must be created between the VLANs

C.

Host1 and host2 must be placed in the same VRF

D.

A layer 3 VXLAN gateway must be configured on at least on at least one of the devices

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Question # 8

You have a site with thousands of MAC addresses multihomed to two leaf nodes in an EVPN VXLAN. In this scenario, which EVPN feature provides fast network convergence in the event of a leaf node link failure?

A.

Fast rerouter

B.

BGP Additional Paths

C.

Ethernet Autodiscovery

D.

Bidirectional Forwarding detection

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Question # 9

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?

A.

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

B.

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

C.

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

D.

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

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Question # 10

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 # 11

A VXLAN has been created between devices leaf1 and Ieaf3.

Referring to the exhibit, which statement is true?

A.

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

B.

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

C.

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

D.

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

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Question # 12

Which two statements about an over-the-top (OTT) data center interconnect architecture are correct? (Choose two.)

A.

For a Layer 2 stretched network between data centers, a full mesh of VXLAN tunnels between leaf switches is required.

B.

IBGP or EBGP is required for the underlay.

C.

Multicast is supported.

D.

OTT is ideal for small and medium data center designs.

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Question # 13

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 # 14

You manage a data center with a 5-stage EVPN-VXLAN IP fabric. You notice that there are

suboptimal paths used between the leaf and spine as well as the spine and super spine. What is one way to solve this issue?

A.

Configure the super spine and spine layers to all use the same ASN.

B.

Configure the spine layer for EBGP and the leaf layer for IBGP

C.

Configure the spine layer so that all spines in a POD share the same ASN.

D.

Configure the leaf layer so that all leaf devices share the same ASN.

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Question # 15

You are asked to design a deployment plan for a large number of QFX Series switches using

ZTP. The ZTP deployment plan must ensure all switches are configured with their designated configuration file.

Which DHCP option and subscription combination would be used to accomplish this task?

A.

DHCP option 43 a suboption of 00.

B.

DHCP option 66 a suboption of 01.

C.

DHCP option 66 a suboption of 00.

D.

DHCP option 43 a suboption of 01.

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Question # 16

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

A.

The. MAC address 52:54:00 5e 88 6a belongs to a remote host.

B.

The MAC address 52:54;00 5e 88 6a belongs to a local host.

C.

The MAC address 52:54:00 2c 4b:a2 belongs to a remote host.

D.

The MAC address 52:54:00 2c 4b:a2 belongs to a local host.

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Question # 17

Which statement is true about the route shown in the exhibit?

A.

The route target on this route is 1000

B.

The route is an EVPN type-1 route.

C.

The route uses a type-1 route distinguisher.

D.

The VNI for this route is 304.

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Question # 18

You are asked to scale the available bandwidth within your Clos data center network to support more east-west traffic. In this scenario, what are two ways to accomplish this task? (Choose two.)

A.

Add leaf devices to increase available paths and bandwidth

B.

Use aggregated interfaces in the fabric.

C.

Add spines to increase available paths and bandwidth.

D.

Interconnect all spines to increase available paths and bandwidth.

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Question # 19

You want to configure redundant Layer 3 gateways

In this scenario, which two juniper best practices would accomplish this task? (Choose two.)

A.

Allowing Junos to dynamically create the virtual MAC address of the IRB interface

B.

Configuring both IRB interfaces manually with the same IP address

C.

Configuring both IRB interfaces manually with the same address

D.

Allowing Junos to dynamically create the virtual IP address of the IRB interface

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Question # 20

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 # 21

What are two methods used to scale an IBGP IP Fabric? (Choose two.)

A.

Spanning tree

B.

Redundant trunk groups

C.

Route reflection

D.

Confederations

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Question # 22

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 # 23

You are troubleshooting a traditional Clos Layer 3 IP fabric in your data center. You are reviewing

the BGP configuration for one of your spine devices.

Referring to the exhibit, which statement is correct?

A.

This spine device will not install multiple next hops for remote destinations in its routing table.

B.

This spine device will not install any routes for remote destinations in its routing table.

C.

This spine device has three neighboring leaf devices.

D.

This spine device has three neighboring spine devices.

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Question # 24

What are two types of EVPN routes? (Choose two.)

A.

ES-lmport route target

B.

Ethernet segment

C.

MAC mobility

D.

MAC advertisement

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Question # 25

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 # 26

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

In this scenario, which statement is true?

A.

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

B.

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

C.

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

D.

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

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Question # 27

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

A.

The host with the 00:0c:29:08:04:a0 MAC address is not reachable through a VTEP tunnel.

B.

The host with the 00:0c:29:e8:b7:39 MAC address is reachable through a VTEP tunnel.

C.

The host with the 00:0c:29:08:04:a0 MAC address is reachable through a VTEP tunnel.

D.

The host with the 00:0c:29:e8:b7:39 MAC address is not reachable through a VTEP tunnel.

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Question # 28

You are asked to enable plug-and-play line card switches in an active VCF without making any future Junos configuration charges. You are also required to ensure that all new line card are automatically upgrade to the correct Junos version without any manual intervention. In this scenario, which two actions will accomplish this task? (Choose two.)

A.

Set the virtual Chassis as auto-provisioned before the line cars are inserted.

B.

Ensure that the newly instead card's MAC addresses are present in the DHCP configuration for ZTP.

C.

Set the Virtual Chassis as per-provision before the line are inserted.

D.

Configure the auto-sw-update parameter on the VCF before inserting new line cards.

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Question # 29

You are asked to build a single export policy that can be applied to all devices to advertise only loopback IP addresses in the 172.16.0.0/24 subnet into your EBGP IP fabric. In this scenario, which two solutions would accomplish this task?(Choose two.)

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Question # 30

You are designing an EBGP IP fabric for a multi-side data center. In this scenario, which two statements are true? (Choose two.)

A.

The same AS number should be used on all devices across all data centers.

B.

Different AS numbers should be used on all devices.

C.

Private AS numbers can be used.

D.

Public AS numbers must be used

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Question # 31

What are three functions supported by the Contrail Command user interface?

A.

Integrated syslog collector

B.

Enabling VM-to-BMS bridging

C.

Configuring management domains

D.

Onboarding of an IP fabric

E.

Creating virtual network

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Question # 32

Which EVPN route type would be used in DCI situation in which the IP subnets between data center are complete unique?

A.

Type 4

B.

Type 3

C.

Type 2

D.

Type 5

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Question # 33

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 # 34

Which two combinations are supported when configuring a Virtual Chassis Fabric? (Choose two.)

A.

Four spine nods and 20 leaf nodes

B.

Four spine nods with 16 leaf nodes

C.

two spine nods and 16 leaf nodes

D.

Two spine and 28 leaf nodes

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Question # 35

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

A.

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

B.

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

C.

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

D.

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

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Question # 36

Exhibit.

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

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

A.

Configure a rib-group policy to advertise interface routes under both routing instances.

B.

Configure vrf-table-label under both routing instances.

C.

Configure auto-export and an vrf-import policy under both routing instances.

D.

Configure a vrf-export policy to advertise interface routes under both routing instances.

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Question # 37

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 # 38

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

A.

Seamless EVPN VXLAN stitching is in use.

B.

Switch01 is a spine device.

C.

An OTT data center interconnect is in use.

D.

Switch01 is a leaf device.

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Question # 39

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 # 40

Referring to the exhibit, you have a data center with two PODs. Seamless EVPN-VXLAN stitching is used to facilitate communication between the PODs.

Which three statements are true in this scenario? (Choose three.)

A.

AVXLAN tunnel can form between L2 and S1.

B.

A VXLAN tunnel can form between S1 and S2.

C.

AVXLAN tunnel can form between L1 and L2.

D.

AVXLAN tunnel can form between L2 and S3.

E.

AVXLAN tunnel can form between L1 and L4.

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Question # 41

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?

A.

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

B.

Change the mc-ae is on qfx1 to 1

C.

Configure status-control on qfx2 to active

D.

Change the chassis on qfx1 to 1

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Question # 42

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 # 43

In an EVPN multicast environment, which two route types facilitate IGMP join and IGMP leave behavior for multihomed sites? (Choose two.)

A.

type-7

B.

type-4

C.

type-8

D.

type-3

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Question # 44

Referring to the exhibit, which two statements are correct in a seamless EVPN-VXLAN stitching DCI design? (Choose two.)

A.

The 00:21:22:23:24:25:26:27:28:22 value represents the interconnect ESI.

B.

The 10.1.1.2 host is reachable in a remote data center POD.

C.

The 10.1.1.1 host is reachable in a remote data center POD.

D.

The 00:21:22:23:24:25:26:27:28:22 value represents the local ESI.

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Question # 45

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 # 46

You administer an EVPN-VXLAN fabric. You notice that there is no VXLAN traffic forwarding through the network.

Referring to the exhibit, which modification will solve the problem?

A.

set firewall family inet filter allow-BGP term 1 from protocol udp set firewall family inet filter allow- BGP term 1 from destination-port 4789

B.

set interfaces et-0/0/49 unit 0 family vxlan

C.

set interfaces et-0/0/49 unit 0 family vpls

D.

set firewall family inet filter allow-BGP term 1 from protocol tcp set firewall family inet filter allow- BGP term 1 from destination-port 4789

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