Certified JN0-662 Pack 2021

NEW QUESTION 1
You are troubleshooting a Layer 3 VPN issue. The VPN has been passing traffic successfully for some time, but now it is reported that traffic is no longer flowing. You look into the bgp.l3vpn.0 table and see newly hidden routes.
What would be the cause of this problem?

• A. The LSP used to connect the PE routers is down.
• B. The connection from the PE to the customer is down.
• C. The BGP routes received from the customer are no longer reachable.
• D. The family inet-vpn parameter was deleted from the BGP configuration of the PE router.

Answer: D

NEW QUESTION 2
Click the Exhibit button.

Referring to the exhibit, what must be added to the existing configuration to ensure that per-prefix load balancing occurs?

• A. multihop
• B. keep all
• C. multipath
• D. family inet unicast

Answer: C

NEW QUESTION 3
Click the Exhibit button.

You have the multi-area OSPF network design shown in the exhibit. Which path will traffic from R1 transit to reach R4 if the R2-R4 link fails?

• A. R1-R2-R5-R3-R4
• B. R1-R2-R3-R5-R4
• C. R1-R2-R3-R4
• D. R1-R2-R5-R4

Answer: D

NEW QUESTION 4
How is a BGP Layer 2 VPN prefix formed by a PE?

• A. by combining the route distinguisher and vrf-target, in that order
• B. by combining the route distinguisher, remote site identifier, and site identifier, in that order
• C. by combining the route distinguisher, site identifier, and remote site identifier, in that order
• D. by combining the vrf-target and route distinguisher, in that order

Answer: C

NEW QUESTION 5
You are asked to configure PIM-SM in your network. Your implementation must allow for load sharing between redundant RPs and, should an RP failure occur, the RP failover time should be minimized.
Which two configuration tasks are required in this scenario? (Choose two.)

• A. Configure MSDP peering sessions between the routers designated as RPs.
• B. Configure the shared anycast address on the RPs as the primary address on the loopback interface.
• C. On the routers designated as RPs, configure the shared anycast address on the loopback interface.
• D. Configure at least two static RPs and bundle them in an RP redundancy group under [edit protocols pim].

Answer: BD

NEW QUESTION 6
Click the Exhibit button.

Referring to the exhibit, what information must be acquired about AS65200's configuration for AS65100 to build an interprovider VPN between PE1 to PE2?

• A. the route-distinguisher of PE2 and the loopback of PE2
• B. the route-distinguisher of PE2 and the loopback of ASBR2
• C. the route-target used for CE-A2 and the loopback of PE2
• D. the route-target used for CE-A2 and the loopback of ASBR2

Answer: C

NEW QUESTION 7
You want to use IS-IS on a GRE interface where the underlying Layer 3 MTU is 1500. Which statement is correct in this scenario?

• A. IS-IS can be used because every IS-IS interface must be capable of transmitting packets at least as large as 1476 bytes, and the GRE header is 24 bytes.
• B. IS IS can be used, but the networking device directly attached to the circuit must be capable of fragmentation.
• C. IS-IS cannot be used, but the router can enable a GRE key that serves the same function as IS-IS.
• D. IS-IS cannot be used because the IS-IS hello is not allowed to be fragmented and has the DF bit set.

Answer: B

NEW QUESTION 8
Click the Exhibit button.

You have configured a BGP-signaled Layer 2 VPN with the configuration shown in the exhibit. Which two statements are true in this situation? (Choose two.)

• A. Remote site 1 is dual-homed.
• B. The local site is site ID 1.
• C. The route-distinguisher is in the wrong format.
• D. Interface ge-0/0/l.512 is connected to the local site

Answer: AB

NEW QUESTION 9
Click the Exhibit button.

Referring to the exhibit, what must be added to the existing configuration to ensure that per-prefix load balancing occurs?

• A. multihop
• B. keep all
• C. multipath
• D. family inet unicast

Answer: A

NEW QUESTION 10
Which message type initiates the BGP session?

• A. update
• B. open
• C. keepalive
• D. notification

Answer: B

NEW QUESTION 11
Click the Exhibit button.

You administer AS 65000, and have deployed a route reflector (RR1) in your network as shown in the exhibit. The traffic between AS 65001 and AS 65002 is going through the route reflector, even though it is not the best path.
What will solve this problem?

• A. Change the LOCAL_PREF so that it uses the preferred path.
• B. Remove the nhs policy.
• C. Change the originator to be the preferred path.
• D. Change the IGP metric so it is lower on the preferred path.

Answer: B

NEW QUESTION 12
Which statement is correct regarding BGP route reflectors?

• A. The route reflectors must have a private AS number.
• B. The route reflectors must have an EBGP peering session between each other.
• C. The route reflectors must have a cluster ID configured.
• D. The route reflectors must have a different AS number than the clients.

Answer: C

NEW QUESTION 13
How does Juniper Networks use selective BGP route damping to help stabilize the network?

• A. The damping decay half-life holds down peer links for a defined measure of time to prevent route table reconvergence.
• B. The damping max-suppress timer is set to the lowest possible value by default.
• C. The figure-of-merit value measures route stability by advertisement and withdrawal.
• D. Aggressive IGP hold timers prevent the routes from entering and exiting the BGP route selection process.

Answer: C

NEW QUESTION 14
To reduce the size of OSPF Area 100, you configure the area with the no-summaries parameter. After committing this configuration change, you notice that an OSPF router in a remote area is no longer receiving Type 5 LSAs from an ASBR in Area 100.
Which statement is true in this scenario?

• A. The ASBR in Area 100 generates Type 5 LSAs, and places them in its own database.
• B. The ASBR in Area 100 generates Type 5 LSAs, and they are translated to Type 7 LSAs.
• C. The ASBR in Area 100 generates Type 5 LSAs, and they are blocked by the ABR.
• D. The ASBR in Area 100 generates Type 5 LSAs, and a virtual link is required for transport to other areas.

Answer: B

NEW QUESTION 15
Click the Exhibit button.

The exhibit shows a BGP peering session for two PE routers. The BGP session is up, but IPv4 hosts in the Layer 3 VPN that use the BGP session are unable to communicate.
What is the problem?

• A. The BGP peer does not support the add-path feature.
• B. The BGP peer does not support the restarter functionality.
• C. The local BGP router does not support Layer 2 VPN and Layer 3 VPN NLRI address families at the same time.
• D. There is a mismatch in the supported NLRI address families between the BGP peers.

Answer: D

NEW QUESTION 16
You want to add a new OSPF area to your existing OSPF network, however, this area will not be directly connected to Area 0. Which feature would you use to complete this task?

• A. a routing policy
• B. not-so stubby area
• C. virtual link
• D. Type 10 LSA

Answer: C

NEW QUESTION 17
You are asked to configure a new Layer 3 VPN.
In this scenario, which routing-instance type must be used?

• A. vpls
• B. evpn
• C. vrf
• D. 12vpn

Answer: C

NEW QUESTION 18
Click the Exhibit button.

Referring to the exhibit, in which order will ICMP traffic be processed by the configured filters and policers for interface ge-1/0/0?

• A. input filter, input policer, output policer, output filter
• B. input policer, input fitter, output policer, output filter
• C. input filter, input policer, output filter, output policer
• D. input policer, input filter, output filter, output policer

Answer: D

NEW QUESTION 19
Your company has multiple upstream BGP connections to the Internet through ISP-A, ISP-B, and ISP-C. You want to ensure that all traffic coming into your network uses ISP-A.
How would you accomplish this task?

• A. Change the route preference to be higher on routes being advertised to ISP-B and ISP-C.
• B. Prepend your AS number on routes being advertised to ISP-A.
• C. Change the local preference to be higher on routes being advertised to ISP-A.
• D. Prepend your AS number on routes being advertised to ISP-B and ISP-C.

Answer: D

NEW QUESTION 20
Which neighbor state indicates that two BGP neighbors have full connectivity?

• A. Idle
• B. Connect
• C. OpenConfirm
• D. Established

Answer: D

NEW QUESTION 21
Click the Exhibit button.

Referring to the exhibit, RR1-RR4 are route reflectors.
Which three routers would RR1 need to peer with if the no-client-reflect parameter has been configured? (Choose three.)

• A. R2
• B. R5
• C. RR4
• D. R6
• E. R1

Answer: ACE

NEW QUESTION 22
You want to reject routes from any BGP peers that have prepended their AS path. What is the correct as-path regex that would allow you to accomplish this task?

• A. 65001.*
• B. .{2,}
• C. (65001|65001|65001)
• D. .{0,1}

Answer: D

NEW QUESTION 23
Click the Exhibit button.

Referring to the exhibit, what is the correct prefix length of the route for the multihomed device?

• A. 192
• B. 304
• C. 296
• D. 248

Answer: B

NEW QUESTION 24
Click the Exhibit button.

R5 must advertise Subnet A into IS-IS so that Subnet A and Subnet B can communicate. Subnet B must be able to forward traffic to Subnet A and towards Area 49.0001. However, R5 should not be able to route traffic from Subnet A to Area 49.0001.
Referring to the exhibit, how would you solve this problem?

• A. Configure Level 2 on all links in Area 49.0002.
• B. Configure the set protocols isis ignore-attached-bit parameter on R5.
• C. Configure the set protocols isis overload parameter on R6.
• D. Configure an export policy on R6 to reject all routes except Subnet B towards R5.

Answer: B

NEW QUESTION 25
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