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2021 Oct JN0-660 study guide
Q41. - (Topic 3)
You want to enable PFE fast reroute for the MPLS nodes that are acting as bypass routers for multiple MPLS LSPs. Which action must you take to facilitate this behavior?
A. Apply a load balancing policy to the forwarding tables of the bypass routers.
B. Apply the RSVP fast reroute feature on the bypass routers.
C. Apply the MPLS link protection feature on the bypass routers.
D. Apply the RSVP load balance feature on the ingress and the bypass routers.
Answer: A
Q42. - (Topic 2)
Click the Exhibit button.
Given the output in the exhibit, which three statements are correct? (Choose three.)
A. PIM spare-dense mode is used.
B. PIM sparse mode is used.
C. The receiver and source 10.255.70.15 are on the shortest path tree.
D. The receiver and source 10.255.70.15 are on the shared tree.
E. The receiver and RP are on the shortest path tree.
Answer: B,C,E
Q43. - (Topic 2)
Click the Exhibit button.
Based on the output in the exhibit, which statement is correct?
A. R4 has been configured with an IS-IS export policy and is announcing external routing information.
B. R3 and R4 have an adjacency at both level 1 and level 2.
C. R3 has been configured so that it is not used for transit traffic.
D. R3 and R4 have only a level 2 adjacency.
Answer: B
Q44. - (Topic 4)
Refer to the exhibit.
What are two ways to resolve the error BGP label allocation failure: Need a next hop address on LAN? (Choose two.)
A. Configure a /32 static route with the next hop as itself to any remote address on the network assigned to the CE-facing interface.
B. Resolve the MPLS issue between the PE routers.
C. Configure a static ARP entry on fe-l/#3.0.
D. Configure vrf-table-label in the routing-instance.
Answer: A,D
Q45. - (Topic 2)
Which two configuration parameters are required to configure an LDP-signaled VPLS service? (Choose two.)
A. vpls-id
B. site-identifier
C. route-distinguisher
D. instance-type vpls
Answer: A,D
Renewal JN0-660 real exam:
Q46. - (Topic 2)
Click the Exhibit button.
In the exhibit, all routers within each AS are configured for Anycast RP. All intra-AS routers are configured within the same MSDP mesh group. Inter-AS multicast has been enabled using MSDP without MSDP mesh groups. Which statement is true?
A. R6 and R7 should have an MSDP peering, because multiple MSDP AS hops are not allowed.
B. SA messages received from R2 are not forwarded to R5, R7, and R8.
C. SA messages from R5 are not forwarded to AS1.
D. Duplicate SA messages may be received in AS2.
Answer: D
Q47. - (Topic 1)
Click the Exhibit button.
What would happen if the guaranteed-rate command is removed from the configuration shown in the exhibit?
A. The logical interface gets a minimal bandwidth reservation.
B. The minimum-rate command should be configured instead.
C. The logical interface receives no bandwidth constraints.
D. The transmit-rate command should be configured instead.
Answer: A
Q48. - (Topic 2)
An LDP Layer 2 circuit is configured for VPN A and VPN B. Which three statements are true regarding LDP Layer 2 circuit signaling? (Choose three.)
A. PE-P LDP sessions use Martini encapsulation.
B. PE-PE LDP sessions can be extended or adjacent.
C. VRF tables are needed on the PEs.
D. TCC encapsulation is needed to interconnect different interface types.
E. The VC type field in the LDP header specifies the encapsulation type.
Answer: B,D,E
Q49. - (Topic 3)
Refer to the exhibit.
What is the expected result based on the configuration shown in the exhibit?
A. To discourage IBGP routers from using the path through 10.10.10.2
B. To encourage IBGP routers to use the path through 10.10.10.2
C. To discourage EBGP routers from using the path through 10.10.10.2
D. To encourage EBGP routers to use the path through 10.10.10.2
Answer: C
Q50. - (Topic 1)
Click the Exhibit button.
Referring to the exhibit, which MPLS feature was used to make the LSP the preferred path for internal routes?
A. traffic engineering bgp-igp
B. traffic engineering shortcuts
C. traffic engineering mpls-forwarding
D. install active
Answer: C