Juniper Juniper Certifications JN0-690 Questions & Answers

• Question 41:

  Which two statements are true regarding BGP path MTU discovery? (Choose two.)

  A. BGP path MTU discovery provides the most efficient use of link bandwidth.

  B. BGP path MTU discovery alleviates fragmentation problems.

  C. BGP path MTU discovery must be configured on every router along the path.

  D. BGP path MTU discovery can be enabled only for IBGP sessions.

  Correct Answer: AB

• Question 42:

  You have been asked to troubleshoot an interface that is flapping. Which three tools would you use to isolate the cause? (Choose three.)

  A. syslog messages

  B. ping utility

  C. loopback interface testing

  D. show interfaces

  E. PFE statistics

  Correct Answer: ACD

• Question 43:

  Which two commands help to identify traffic drops due to oversubscription? (Choose two.)

  A. show interfaces extensive

  B. show interfaces queue

  C. monitor interface traffic

  D. monitor traffic interface

  Correct Answer: AB

• Question 44:

  You are asked to provide an audit trail for all user activity on your Junos device. Which syslog configuration statement accomplishes this task?

  A. user * {any any;}file messages {any notice;authorization info;}

  B. user * {any any;}file messages {any info;authorization info;}

  C. user * {any emergency;}file messages {any notice;authorization info;}file interactive-commands {interactive-commands any;}

  D. user * {any emergency;}file messages {any notice;authorization info;}file audit-commands {authorization any;}

  Correct Answer: C

• Question 45:

  You are asked to configure traceoptions to capture all general events for rpd. Which configuration statement accomplishes this task?

  A. [edit routing-options]user@router# show traceoptions {file rpd_log;flag general;}

  B. [edit routing-instances]user@router# show traceoptions {file rpd_log;flag general;}

  C. [edit forwarding-options]user@router# show traceoptions {file rpd_log;flag general;}

  D. [edit protocols]user@router# show traceoptions {file rpd_log;flag general;}

  Correct Answer: A

• Question 46:

  Which two statements are true about firewall filters and policers? (Choose two.)

  A. If an input firewall filter is configured on the same logical interface as a policer, the firewall filter is executed first.

  B. If an output firewall filter is configured on the same logical interface as a policer, the policer is executed first.

  C. If an input firewall filter is configured on the same logical interface as a policer, the policer is executed first.

  D. If an output firewall filter is configured on the same logical interface as a policer, the firewall filter is executed first.

  Correct Answer: CD

• Question 47:

  In Junos, which process has its own internal task scheduler?

  A. chassisd

  B. rpd

  C. mgd

  D. ppmd

  Correct Answer: B

• Question 48:

  Which three statements are correct about rpd related troubleshooting on devices running the Junos OS? (Choose three.)

  A. A log for rpd scheduler slip is an indication of something that should be investigated and resolved.

  B. A log for rpd scheduler slip is a common, harmless syslog and can be ignored.

  C. A possible cause for an overworked rpd is excessive protocol tracing.

  D. A possible method to troubleshoot rpd scheduler slips is to temporarily enable task accounting.

  E. Excessive protocol tracing can never be a cause for an overworked rpd.

  Correct Answer: ACD

• Question 49:

  You suspect that your router is missing the .0/24 routes for your local network. You first want to look for the routes on the control plane before troubleshooting the data plane. Which operational mode command should you issue?

  A. show route forwarding-table

  B. show route flow validation table

  C. show route

  D. show arp

  Correct Answer: C

• Question 50:

  A technician has reported an alarm on your device running the Junos OS. You suspect it is due to the temperature in the rack. Which two commands will confirm your suspicion? (Choose two.)

  A. show chassis alarms

  B. show chassis firmware

  C. show chassis hardware

  D. show chassis environment

  Correct Answer: AD