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Juniper JN0-690 Exam Syllabus Topics:

Juniper Junos Troubleshooting Sample Questions:

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

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

2. Which statement is correct about troubleshooting?

A) The problem must be reproducible before attempting a potential solution.
B) Establishing a network baseline is important to help understand when something is not working.
C) You must always have a complete understanding of the problem before you begin gathering any information.
D) You must be sure the problem will be resolved before attempting a potential solution.

3. Which two Junos OS commands are helpful in confirming whether an Object Identifier (OID) has recorded the correct data? (Choose two.)

A) show snmp mib get
B) show snmp mib walk
C) show snmp v3
D) show snmp statistics

4. Click the Exhibit button.
-- Exhibit -user@router> show system processes extensive last piD. 4160; load averages: 0.13, 0.08, 0.07 up 2+02:47:50 21:13:39 120 processes: 17 running, 90 sleeping, 1 zombie, 12 waiting
Mem: 141M Active, 96M Inact, 517M Wired, 160M Cache, 112M Buf, 55M Free Swap:
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 1271 root 7 76 0 514M 63724K select 0 157.9H 280.42% flowd_octeon_hm 22 root 1 171 52 0K 16K RUN 0 43.3H 83.45% idlE. cpu0 4158 lab 1 78 0 49192K 16440K select 0 0:00 2.25% cli 1255 root 1 76 0 114M 17604K select 0 41:47 0.00% chassisd 24 root 1 -20 -139 0K 16K WAIT 0 18:50 0.00% swi7: clock 1293 root 1 76 0 12476K 6484K select 0 9:25 0.00% license-check 4159 root 1 76 0 38608K 5720K select 0 0:00 0.00% mgd
... 36 root 1 8 0 0K 16K usbevt 0 0:00 0.00% usb1 33 root 1 8 0 0K 16K usbevt 0 0:00 0.00% usb0 4160 root 1 77 0 24260K 1816K CPU0 0 0:00 0.00% top 1176 root 1 -8 0 0K 16K mdwait 0 0:00 0.00% md2 7 root 1 8 0 0K 16K - 0 0:00 0.00% thread taskq 1186 root 1 -8 0 0K 16K mdwait 0 0:00 0.00% md3 0 root 1 -8 0 0K 0K WAIT 0 0:00 0.00% swapper
-- Exhibit -
Referring to the exhibit, which Junos OS process was the last one to start?

A) swapper
B) top
C) cli
D) flowd_octeon_hm

5. Click the Exhibit button.
-- Exhibit -user@router> show snmp statistics
SNMP statistics: Input: Packets: 246213, Bad versions: 12, Bad community names: 12, Bad community uses: 0, ASN parse errors: 0, Too bigs: 0, No such names: 0, Bad values: 0, Read onlys: 0, General errors: 0,
Total request varbinds: 227084, Total set varbinds: 67,
Get requests: 44942, Get nexts: 1 , Set requests: 10712,
Get responses: 0, Traps: 0,
Silent drops: 0, Proxy drops: 0, Commit pending drops: 0,
Throttle drops: 0,
V3 Input:
Unknown security models: 0, Invalid messages: 0
Unknown pdu handlers: 0, Unavailable contexts: 0
Unknown contexts: 0, Unsupported security levels: 0
Not in time windows: 0, Unknown user names: 0
Unknown engine ids: 0, Wrong digests: 0, Decryption errors: 0
Output:
Packets: 246093, Too bigs: 0, No such names: 0,
Bad values: 0, General errors: 0,
Get requests: 0, Get nexts: 0, Set requests: 0,
Get responses: 246025, Traps: 0
-- Exhibit --
A new SNMP session has recently been implemented on this router and is experiencing problems sending and receiving SNMP information.
Referring to the exhibit, which two problems are indicated by the received messages from the NMS? (Choose two.)

A) invalid SNMP version indicated
B) unknown SNMP community name
C) unsupported SNMP version indicated
D) unsupported SNMP community name

Solutions: