Juniper JN0-363 JNCIS-SP Exam Practice Test Instant Access

Question 1

What is the correct order of BGP attributes for active route selection?

Anext hop -> local preference -> AS path -> MED -> origin

Bnext hop -> AS path -> local preference -> origin -> MED

Cnext hop -> local preference -> AS path -> origin -> MED

Dnext hop -> origin -> local preference -> AS path -> MED

Answer : C

BGP selects the active route based on an ordered list of attributes. The correct order is:

Weight (Cisco proprietary, not listed in the options)

Local Preference

Network (route) originated from the BGP router itself

Shortest AS Path

Lowest Origin Type

Lowest MED

eBGP over iBGP paths

Closest IGP Neighbor

Lowest Router ID

The next hop is checked for reachability but is not part of the BGP decision process for selecting the best path.

Juniper Networks Technical Documentation on BGP

Question 2

Exhibit

You are asked to configure the OSPF environment to prevent the DRother routers from participating in DR/BDR election.

Referring to the exhibit, which command will accomplish this task?

Aset protocols ospf area 0.0.0.0 interface ge-0/0/l priority 255

Bset protocols ospf area 0.0.0.0 interface ge-0/0/1 priority

Cset protocols ospf area 0.0.0.0 interface ge-0/0/1 interface-type nbma

Dset protocols ospf area 0.0.0.0 interface ge---0/0/1 interface-type p2p

Answer : B

To prevent a router from participating in the OSPF designated router (DR) and backup designated router (BDR) election process, you set the OSPF priority to 0 on the interfaces of that router. This tells OSPF that the router on those interfaces is not to be considered for election as either DR or BDR, effectively making them DRother routers. The exhibit indicates that this is the desired configuration, and therefore the correct command to issue on the Juniper device would be to set the priority to 0 on the relevant interfaces.

Question 3

Which two statements are correct about IS-IS interface metrics? (Choose two.)

ABy default, an IS-IS interface has a maximum metric value of 1023.

BWide metrics enable IS-IS interface to have a maximum metric value of around 16 million.

CWide metrics enable an IS-IS interface to have a maximum metric value of 1023.

DBy default, an IS-IS interface has a maximum metric value of 63.

Answer : B, D

metric---Metric value. Range: 1 through 63, or 1 through 16,777,215 (if you have configured wide metrics) Default: 10 (for all interfaces except lo0), 0 (for the lo0 interface)

Question 4

Exhibit

Referring to the exhibit, how do you verify the status of the tunnel from R1?

AIssue the ping 172.20.111.10 source 172.20.110.1 command.

BIssue the ping 172.20.111.10 source 198.51.100.1 command.

CIssue the ping 172.20.iii.io source 203.0.113.2 command.

DIssue the ping 172.20. Ill. 10 command.

Answer : B

To verify the status of the tunnel from R1, you would issue a ping from the source address that is assigned to R1's end of the tunnel. In the exhibit, we can see that the tunnel interface (gre-0/0/0.0) has the IP address 198.51.100.1 on R1. Therefore, to test the tunnel's status, you should ping the IP address at the other end of the tunnel (which is likely the address on User B's interface or another interface on R2) from R1's tunnel source address.

Juniper Networks documentation on GRE: GRE Interface Configuration

Question 5

Exhibit

Which two statements are correct about the service provider MPLS network shown in the exhibit? (Choose two.)

AR3 is considered a P router.

BR3 is considered a PE router.

CR3 is considered a transit router.

DR3 is considered an ingress router.

Answer : A, C

In a service provider MPLS network, P routers are interior routers that are used to transit MPLS-labeled packets between edge routers but do not attach or remove MPLS labels themselves. These routers are also referred to as transit routers. They are neither ingress nor egress routers (which are typically labeled as PE routers).

Juniper Networks documentation on MPLS: MPLS Fundamentals

Question 6

Exhibit

You have an established LSP between your R1 and R5 devices using the configuration shown in the exhibit. You are asked to ensure that MPLS labels are used to forward traffic by all devices within the LSP.

Which action will accomplish this behavior?

AConfigure the ultimace-hop-popping statement under the R1_TO_R5 label switched path on R1.

BConfigure the explicit-null statement under the protocol mpls hierarchy on R1.

CDelete the no-espf statement under the R1_TO_R5 label switched path on R1.

DConfigure the install statement under the R1_TO_R5 label switched path on R1.

Answer : B

The 'ultimate-hop-popping' term refers to the action taken by the penultimate router in an LSP to remove the MPLS label before delivering the packet to the ultimate router, which is not desired here. Configuring the 'explicit-null' statement causes the penultimate router to replace the top label with a label that has a value of 0, which instructs the ultimate router to perform a label lookup and preserve the label switching for the entire LSP.

Juniper Networks documentation on MPLS: MPLS Applications User Guide for Routing Devices

Question 7

What are two types of SIDs used in segment routing? (Choose two.)

Alink

Binterface

Cadjacency

Dnode

Answer : C, D

Juniper Service Provider Routing and Switching, Specialist JN0-363 JNCIS-SP Exam Practice Test