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Juniper Junos Troubleshooting Sample Questions:

1. Which CLI command is used to restart a software process?

A) restart
B) reload
C) reboot
D) commit

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

A) A possible method to troubleshoot rpd scheduler slips is to temporarily enable task accounting.
B) A possible cause for an overworked rpd is excessive protocol tracing.
C) A log for rpd scheduler slip is an indication of something that should be investigated and resolved.
D) A log for rpd scheduler slip is a common, harmless syslog and can be ignored.
E) Excessive protocol tracing can never be a cause for an overworked rpd.

3. -- Exhibit -
[edit]
user@router# show interfaces
ge-1/1/2 {
gigether-options {
802.3ad ae0;
}
}
ge-1/1/3 {
gigether-options {
802.3ad ae0;
}
}
ae0 {
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 100;
}
}
}
-- Exhibit -
You are asked to configure a LAG. You configure and commit the configuration as shown in the exhibit. When verifying your ae0 interface, you encounter the following error:
[edit] user@router# run show interfaces ae0 error: device ae0 not found
Which command would you use to resolve this problem?

A) set chassis aggregated-devices ethernet device-count 1
B) set chassis alarm ethernet link-down ignore
C) set chassis network-services ethernet
D) set interfaces ae0 aggregated-ether-options lacp active

4. Which operational CLI command would you use to troubleshoot hardware-related problems?

A) show route
B) show cli
C) show system
D) show chassis

5. 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 backup Routing Engine.
B) Issue the show chassis routing-engine command from the backup Routing Engine.
C) Issue the show system switchover command from the master Routing Engine.
D) Issue the show chassis routing-engine command from the master Routing Engine.

Solutions: