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2021 Nov JN0-691 test question

Q31. Which statement is true about an operational interface that has been deactivated? 

A. The interface is admin down and link up. 

B. The interface is admin up and link down. 

C. The interfaceis admin up and link up. 

D. The interface is admin down and link down. 

Answer: D 


Q32. You have configured graceful Routing Engine switchover (GRES) on your device running the Junos OS. Which command would you run to ensure that GRES is functioning properly? 

A. Issue the show system switchover command from the master Routing Engine. 

B. Issue the show system switchover command from the backup Routing Engine. 

C. Issue the show chassis routing-engine command from the backup Routing Engine. 

D. Issue the show chassis routing-engine command from the master Routing Engine. 

Answer: B 


Q33. 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 Layer 2 headers 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 the CRC header while calculating the MTU. 

Answer: A, C 


Q34. You are asked to implement a firewall filter to protect the Routing Engine processes and resources on one of your routers. This router has several routing instances configured and each instance has an independent loopback interface. Which two statements are correct? (Choose two.) 

A. The firewall filter should be applied only to the lo0.0 interface. 

B. The firewall filter should be applied as an output filter. 

C. The firewall filter should be applied as an input filter. 

D. The firewall filter should be applied to all configured units of the lo0 interface. 

Answer: C, D 


Q35. In the Junos OS, which type of file dumps the program’s environment in the form of memory pointers, instructions, and register data to a file in the event of a panic or other serious malfunction? 

A. log file 

B. backup file 

C. configuration file 

D. core file 

Answer: B 


Latest JN0-691 study guide:

Q36. Click the Exhibit button. 

Which statement is true about the output shown in the exhibit? 

A. The forwarding next hop is the IP prefix associated with the interface. 

B. The forwarding next hop is a unicast route. 

C. The forwarding next hop is indirect. 

D. The forwarding next hop is reachable through a point-to-point interface. 

Answer: B 


Q37. 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. 

Answer: C, D 


Q38. Click the Exhibit button. 

Referring to the exhibit, which two behaviors are expected if User B sends a frame with a destination MAC address of 00:26:88:02:74:88? (Choose two.) 

A. The frame will be received and processed by all host devices. 

B. The switch will receive and forward the frame. 

C. The frame will be received and processed by the User C device only. 

D. The switch will receive and discard the frame. 

Answer: B, C 


Q39. A client has reported that they cannot establish an FTP connection to your Junos device. 

Which command would you use to diagnose the problem? 

A. show interfaces terse 

B. monitor interface traffic 

C. monitor traffic interface 

D. show interfaces extensive 

Answer: C 


Q40. What information would be seen in the output of theshow chassis environmentcommand? 

(Choose two.) 

A. fan speed 

B. part number 

C. temperature 

D. serial number 

Answer: A, C