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2021 Sep JN0-660 exam guide
Q51. - (Topic 3)
Click the Exhibit button.
Which choice shows the configuration in the exhibit in SLAX format?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Q52. - (Topic 2)
Click the Exhibit button.
After adding Customer C to your Layer 3 VPN, you must validate that PE2 is receiving VPN routes for all customers attached to PE1, as shown in the exhibit. Which operational command displays this information?
A. show route instance
B. show route summary
C. show route table bgp.l3vpn.0
D. show route table customer-c.inet.0
Answer: C
Q53. - (Topic 2)
Click the Exhibit button.
The exhibit contains a sample trace file of a BGP update message. Which two statements are true? (Choose two.)
A. 10.10.56.0/30 is a route internal to the AS.
B. The router that sent this update is the BGP originator of 10.10.56.0/30.
C. The BGP session is EBGP.
D. The local preference has been changed from the default settings.
Answer: A,B
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 1)
Click the Exhibit button.
R3 and R4 want to establish an EBGP session between each other's loopback addresses. They have each configured static routes to the other's loopback address and can ping from loopback toloopback. Their EBGP session is configured with correct neighbor and local addresses. The correct AS numbers have been specified at the [routing-options] hierarchy as well. Considering the topology in the exhibit, which statement is true?
A. BGP's protocol preference must be adjusted to be lower than protocol static for the session to establish.
B. Each side must configure multipath for the session to establish.
C. Each peer must specify a local-as within their EBGP configuration for the session to establish.
D. Each peer must configure multihop for the session to establish.
Answer: D
Improved JN0-660 practice test:
Q56. - (Topic 3)
Click the Exhibit button.
Traffic is flowing through an MX Series router. Traffic using the top and critical schedulers is out of profile, while all other traffic is currently in profile.
Referring to the exhibit, which two statements are correct? (Choose two.)
A. The top queue is serviced before the best-effort queue.
B. The top queue is serviced after the best-effort queue.
C. The critical queue is serviced before the best-effort queue.
D. The critical queue is serviced after the best-effort queue.
Answer: A,D
Q57. - (Topic 3)
You want to use IS-IS on a GRE interface where the underlying Layer 3 MTU is 1500. Which statement is correct?
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 cannot be used because the IS-IS hello is not allowed to be fragmented and has the DF bit set.
C. IS-IS can be used, but the networking device directly attached to the circuit must be capable of fragmentation.
D. IS-IS cannot be used, but the router can enable a GRE key that serves the same function as IS-IS.
Answer: C
Q58. - (Topic 4)
You must add the 5.0.0.1 OSPF route to the inet.3 routing table for LSP resolution. Which two configuration examples meet this requirement? (Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A,D
Q59. - (Topic 4)
You are asked to deploy VPLS in your network as a new service for several customers and must identify the configuration and provisioning requirements. Which two statements are correct? (Choose two.)
A. PE routers must include a VRF routing instance.
B. PE interfaces facing customers must have family VPLS configureD.
C. PE routers must create a unique site ID for each CE device.
D. CE routers must be configured with their assigned route target.
Answer: B,C
Q60. - (Topic 3)
You want to aggregate policing for different protocol families and different logical interfaces on the same physical interface. Which CoS configuration attribute will accomplish this goal?
A. hierarchical policer
B. shared bandwidth policer
C. physical interface policer
D. logical interface policer
Answer: C