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2021 Feb JN0-660 exam
Q51. - (Topic 2)
You are a network administrator in charge of configuring CoS for your network. Your network includes a voice application with strict latency requirements, so that any packets delayed by more than 75 ms are effectively useless. When configuring the scheduler for this application, which feature ensures that you do not waste buffer space?
A. rate-limit
B. adaptive
C. latency-limit
D. temporal
Answer: D
Q52. - (Topic 2)
Click the Exhibit button.
On your MX Series router, traffic using the critical scheduler is out of profile. All other data is currently in profile. Referring to the exhibit, which statement is correct?
A. The critical queue is serviced before the less-critical queue.
B. The critical queue is serviced after the left-over queue.
C. The critical queue is serviced before the data queue.
D. The critical queue is serviced before the voice queue.
Answer: B
Q53. - (Topic 3)
You are setting up MPLS RSVP LSPs between R1 and R6 through your core network. You must ensure that the R1 has redundant ERO paths. You must also ensure that both paths are signaled and ready for traffic.
Which action will accomplish these requirements?
A. Create two primary paths.
B. Create a primary path and create a secondary path.
C. Create a primary path and create a secondary path with the standby parameter.
D. Create a primary path and create a secondary path with the active parameter.
Answer: C
Q54. - (Topic 1)
Click the Exhibit button.
In the exhibit, Area 1 and Area 2 are configured as not-so-stubby areas. RIP network 192.168.100.0/24 is redistributed into OSPF in Area 1.Which three statements are true? (Choose three.)
A. Network 192.168.100.0/24 is advertised in a Type 7 LSA in Area 1.
B. Network 192.168.100.0/24 is advertised in a Type 7 LSA in Area 0.
C. Network 192.168.100.0/24 is advertised in a Type 5 LSA in Area 0.
D. The area border router between Area 0 and Area 2 converts network 192.168.100.0/24 to a Type 7 LSA.
E. Area 2 does not see the network 192.168.100.0/24 in its link-state database.
Answer: A,C,E
Q55. - (Topic 3)
What are two elements that must be configured to enable LDP? (Choose two.)
A. Add the relevant interfaces under the [edit protocols ldp] hierarchy.
B. Add the relevant interfaces under the [edit protocols rsvp] hierarchy.
C. Add the family iso statement to the relevant interfaces under the [edit interfaces] hierarchy.
D. Add the family mpls statement to the relevant interfaces under the [edit interfaces]
Answer: A,D
Most recent JN0-660 practice question:
Q56. - (Topic 4)
What are two requirements of Layer 2 VPN BGP route reflectors? (Choose two.)
A. Routes are kept in the bgp.l2vpn.0 table.
B. Route reflectors must support the l2vpn family.
C. Route reflectors must support the inet-vpn family.
D. Routes are kept in the inet.2 table.
Answer: A,B
Q57. - (Topic 3)
Click the Exhibit button
The 10.200/16 network is announced as an IS-IS route by R2 to its IS-IS neighbors. R3 and R4 are configured with an IS-IS export policy, which announces this route to R5 and R6.
Which statement is true?
A. When viewed on R5 the 10.200/16 route will be marked down.
B. When viewed on R5 the 10.200/16 route will be marked up.
C. The 10.200/16 route will not be visible on R5.
D. The 10.200/16 route will be marked with the overload bit.
Answer: A
Q58. - (Topic 4)
Refer to the exhibit.
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Q59. - (Topic 2)
Click the Exhibit button.
Customer A is complaining that routes advertised from the CE2 router are not being received on the CE1 router. The physical topology of the network is CE1-PE1-PE2-CE2. The CE1-PE1 subnet is 172.16.1.0/24. The CE2-PE2 subnet is 172.16.2.0/24. PE1's loopback is 192.168.3.1 and PE2's loopback is 192.168.4.1.Referring to the output in the exhibit, what is the problem?
A. No LSP exists between PE1 and PE2.
B. Route targets are not properly configured.
C. as-override is not configured in the VRFs.
D. family inet-vpn is not configured on the PEs.
Answer: C
Q60. - (Topic 2)
Click the Exhibit button.
In the exhibit, network 172.16.0.0/16 is redistributed into IS-IS in Area 49.0002. R1 must use R2 to access 172.16.0.0/16. All other traffic leaving Area 49.0001 must use R4.Which three steps will accomplish this task? (Choose three.)
A. Configure R1 to ignore the attached bit.
B. Disable the attached bit on R4 in Area 49.0001.
C. Enable an L2 adjacency on the link between R1 and R2.
D. Leak network 172.16.0.0/16 into L1 on R2.
E. Redistribute a static default route into L1 on R4.
Answer: A,C,D
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