Online Access Free JN0-690 Practice Test

You are notified about a router reboot event.
Which command would be helpful in determining the reason for the last reboot?

• A.show system snapshot
• B.show chassis routing-engine
• C.show chassis craft-interface
• D.show system reboot

Which operational command would be used to display diagnostic data and alarms for 1/10/100 Gigabit Ethernet optical transceivers?

• A.show interfaces controller
• B.show chassis alarms
• C.show interfaces diagnostics optics
• D.show interfaces extensive

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 the CRC header while calculating the MTU.
• D.The first ping fails because the Junos OS takes into account ICMP and IP headers while calculating the MTU.

Which command is useful in testing the correct operation of an SNMP configuration toward an NMS?

• A.show snmp v3
• B.show snmp mib
• C.request snmp spoof-trap
• D.show snmp rmon

You have configured and successfully committed the configuration for nonstop active routing (NSR). Which command would you use to determine if NSR is operating correctly?

• A.Use the show task replication command on the master and the backup Routing Engines.
• B.Use the show system synchronization command on the master and the backup Routing Engines.
• C.Use the show task replication command only on the master Routing Engine.
• D.Use the show system synchronization command only on the master Routing Engine.