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Total 69 questions
Click the Exhibit button.
Routers R1, R2, and R3 have set protocols isis interface all configured and no other set protocols isis configuration.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The R2-to-R3 link will form a Level 1 and Level 2 adjacency.
- B. The R1-to-R2 link will only form a Level 2 adjacency.
- C. The R1-to-R2 link will form a Level 1 and Level 2 adjacency.
- D. The R2-to-R3 link will only form a Level 1 adjacency.
Answer : AC
According to Juniper Networks, what are three methods of scaling Layer 2 VPNs? (Choose three.)
- A. inbound route filters
- B. route reflection
- C. outbound route filters
- D. filter-based forwarding
- E. BGP route refresh
Answer : ABC
Click the exhibit button.
What would be the expected outcome from the configuration shown in the exhibit?
- A. The VPLS instance would use a control-word instead of a tunnel-services interface, or no-tunnel-services parameter.
- B. The VPLS instance would default to using no-tunnel-services because a tunnel-services interface was not specified.
- C. The VPLS instance would cycle through all virtual tunnel interfaces on the router to find one to use.
- D. The VPLS instance would cycle through all physical interfaces configured on the router to find one to use.
Answer : C
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/usage-guidelines/vpns-specifying-the-vt-interfaces-used-by-vpls-routing-instances.html
With which two elements is a VRF table populated? (Choose two.)
- A. Routes received from remotely connected CE sites.
- B. Routes received from directly connected CE sites.
- C. Routes received from P routers with acceptable MP-BGP attributes.
- D. Routes received from PE routers with acceptable MP-BGP attributes.
Answer : BD
Explanation:
Each VRF table is populated from routes received from directly connected CE sites associated with that VRF routing instance and from routes received from other
PE routers that passed BGP community filtering and are in the same VPN.
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/concept/vpn-routing-tables-vpn-forwarding-tables.html
You have deployed class of service on your network. You notice that the single strict-high queue is starving traffic to all other queues. What will help to ensure that all queues receive the desired transmission rates?
- A. Configure the rate-limit parameter on the strict-high queue.
- B. Set the packet-loss priority to high on the other queues.
- C. Change the other forwarding-classes to a lossless queue.
- D. Increase the priority of all queues to high priority
Answer : A
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/cos-queue-scheduling-priority-qfx-series-cli.html
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
Click the Exhibit button.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. A BGP full mesh is only required between PE-1 and PE-2.
- B. A BGP full mesh is required between P1, P2, PE-1, and PE-2.
- C. MPLS must only be enabled on PE-1 and PE-2.
- D. MPLS must be enabled on P1, P2, PE-1, and PE-2.
Answer : AD
Click the Exhibit button.
Referring to the exhibit, you have multiple Layer 3 VPNs established in your network. You are asked to ensure that PE-4 allows CE-2 in VPN 1 to communicate with CE-1 in VPN 3.
Which two statements are correct in this scenario? (Choose two.)
- A. Use a BGP export policy to share the appropriate VRF routes.
- B. Use the auto-export feature to share the appropriate VRF routes.
- C. Use a BGP import policy to share the appropriate VRF routes.
- D. Use rib-groups to share the appropriate VRF routes.
Answer : AC
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
Click the Exhibit button.
Referring to the ABR configuration shown in the exhibit, which two statements are correct? (Choose two.)
- A. The ABR advertises a default route to the NSSA with a metric of 10.
- B. To reach the ABR, routers within the NSSA add 10 to their calculated path cost.
- C. The ABR advertises NSSA routes to the backbone area with a metric of 10.
- D. To reach the ABR, routers within the NSSA use the metric 10 as their path cost.
Answer : BC
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
Click the Exhibit button.
What is accomplished by the default-gateway parameter in the configuration shown in the exhibit?
- A. The device creates a default route and distributes the IP address to all peers.
- B. The device sends the MAC and IP addresses of the IRB interface to its peers.
- C. The device sends the IP address of the IRB interface without the MAC address.
- D. The device creates a default route and distributes its MAC and IP address to all peers.
Answer : B
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
Click the Exhibit button.
You have deployed route reflectors in your network. You are receiving the route 200.0.0.0/24 from AS10 and AS6 and are seeing the oscillation happening as shown in the exhibit.
What are two ways to solve this issue? (Choose two.)
- A. Configure the always-compare-med parameter on both route reflectors.
- B. Configure the add-path parameter on both route reflectors.
- C. Configure the med-plus-igp parameter on both route reflectors.
- D. Configure the as-path-ignore parameter on both route reflectors.
Answer : AC
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/concept/bgp-med-understanding.html
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