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Juniper Junos Troubleshooting Sample Questions:

1. Click the Exhibit button.

You recently added an EBGP neighbor to R1 and you are receiving a single BGP route for their internal network. You notice that on R2 the route learned from C1 is being marked as hidden because the next hop is unusable.
Referring to the exhibit, what should you do to resolve the problem?

A) Create a next-hop-self import policy on R2 and apply this policy to IBGP.
B) Create a next-hop-self import policy and apply this policy to IBGP.
C) Create a next-hop-self import policy on R1 and apply this policy to EBGP.
D) Create a next-hop-self export policy on R1 and apply this policy to IBGP.

2. Which two features would be deployed to prevent DoS attacks? (Choose two.)

A) loopback filter
B) ARP policer
C) periodic packet management (PPM)
D) Bidirectional Forward Detection (BFD)

3. Which command would be used to clear stuck user sessions?

A) request system reboot
B) request system logout
C) request chassis routing-engine master switch
D) request routing-engine login other-routing-engine

4. A customer operates a multi-vendor production network. They report that LSAs are aging out on Junos devices. Which OSPF parameter must be tuned to prevent this behavior?

A) dead interval
B) LSA refresh interval
C) LSA retransmission interval
D) hello interval

5. Click the Exhibit button.
-- Exhibit -user@R1> show configuration interfaces xe-1/1/0 {
unit 0 { family inet {
address 17.1.1.1/24;
}
family mpls;
}
}
user@R1> ping 17.1.1.2 size 1473 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1473 data bytes
ping: sendto: Message too long
ping: sendto: Message too long
ping: sendto: Message too long
user@R1> ping 17.1.1.2 logical-system R1 size 1472 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1472 data bytes
1480 bytes from 17.1.1.2: icmp_seq=0 ttl=64 time=0.933 ms
1480 bytes from 17.1.1.2: icmp_seq=1 ttl=64 time=0.838 ms
1480 bytes from 17.1.1.2: icmp_seq=2 ttl=64 time=4.688 ms
-- Exhibit --
You are using the ping command to troubleshoot a suspected MTU problem.

A) Referring to the exhibit, which two statements are true? (Choose two.) The first ping fails because the do-not-fragment option is set.
B) The first ping fails because the Junos OS takes into account the CRC header while calculating the MTU.
C) The first ping fails because the Junos OS takes into account ICMP and IP headers while calculating the MTU.
D) The first ping fails because the Junos OS takes into account Layer 2 headers while calculating the MTU.

Solutions: