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Juniper JN0-690 Exam Syllabus Topics:

Juniper Junos Troubleshooting Sample Questions:

Question 1

Two neighboring routers running OSPF were configured with the same router ID by mistake.
Which OSPF operational mode command would report the number of hello packets received with the local router's router ID?

A. show ospf route
B. show ospf log
C. show ospf io-statistics
D. show ospf statistics

Question 2

Click the Exhibit button.
-- Exhibit -
May 20 22:27:04.010297 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area 0.0.0.0) May 20 22:27:04.010320 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1 May 20 22:27:04.010342 checksum 0x166d, authtype 0 May 20 22:27:04.010365 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128 May 20 22:27:04.010387 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0 May 20 22:27:07.891698 OSPF periodic xmit from 192.168.0.1 to 224.0.0.5 (IFL 2684276180 area
0.0.0.0)
May 20 22:27:12.749988 OSPF packet ignored: area mismatch (0.0.0.1) from 192.168.0.2 on intf ge-1/1/2.0 area 0.0.0.0 May 20 22:27:12.750071 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0) May 20 22:27:12.750095 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1 May 20 22:27:12.750116 checksum 0x166d, authtype 0 May 20 22:27:12.750139 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128 May 20 22:27:12.750161 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0 May 20 22:27:14.393182 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0) May 20 22:27:14.393262 Version 2, length 44, ID 10.10.10.1, area 0.0.0.0 May 20 22:27:14.393284 checksum 0x0, authtype 0 May 20 22:27:14.393307 mask 255.255.255.252, hello_ivl 50, opts 0x12, prio 128 May 20 22:27:14.393368 dead_ivl 200, DR 0.0.0.0, BDR 0.0.0.0 May 20 22:27:14.393399 OSPF packet ignored: our router ID received from 192.168.0.2 on intf
ge-1/1/2.0 area 0.0.0.0 -- Exhibit -
Referring to the exhibit, which two OSPF adjacency problems are present? (Choose two.)

A. area type mismatch
B. duplicate router ID
C. hello interval mismatch
D. area number mismatch

Question 3

Click the Exhibit button.
-- Exhibit -user@R1> show route forwarding-table destination 2.2.2.2
user@R1> show route 2.2.2.2
inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
2.2.2.2/32 *[OSPF/10] 2w3d 22:19:41, metric 1 > to 17.1.1.2 via xe-1/1/0.0
-- Exhibit -
Referring to the exhibit, which statement is true about transit traffic sent to 2.2.2.2?

A. R1 will redirect the packet to the Routing Engine.
B. R1 will discard the packet.
C. R1 will forward the packet.
D. R1 will reject the packet.

Question 4

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

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

Question 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. unsupported SNMP version indicated
B. invalid SNMP version indicated
C. unknown SNMP community name
D. unsupported SNMP community name

Solutions: