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Juniper Junos Troubleshooting Sample Questions:

1. Which CLI command applies the candidate configuration to the active configuration?

A) merge
B) load
C) copy run start
D) commit

2. By default, in which table are OSPF routes stored on a Junos device?

A) inet.0
B) inet.2
C) inet.1
D) inet.3

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

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

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

5. -- Exhibit --
Local traffic capture on r1:
Address resolution is OFF.
Listening on ge-5/3/0.0, capture size 1514 bytes
22:16:33.610374 Out IP (tos 0xc0, ttl 1, id 34562, offset 0, flags [none], proto: OSPF (89), length:
76) 10.1.2.1 > 224.0.0.5: OSPFv2, Hello, length 56 [len 44]
Router-ID 1.1.1.1, Backbone Area, Authentication TypE. none (0)
Options [External, LLS]
Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.252, Priority 128
LLS: checksum: 0xfff6, length: 3
Extended Options (1), length: 4
Options: 0x00000001 [LSDB resync]
[edit]
user@r1# run show ospf interface
Interface State Area DR ID BDR ID Nbrs
ge-5/3/0.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 0
lo0.1 DR 0.0.0.0 1.1.1.1 0.0.0.0 0
[edit]
user@r1# run show ospf neighbor
Local traffic capture on r2:
Address resolution is OFF.
Listening on ge-5/3/1.0, capture size 1514 bytes
22:16:42.238030 Out IP6 (class 0xc0, hlim 1, next-header: OSPF (89), length: 36)
fe80::6687:88ff:fe6c:6769 > ff02::5: OSPFv3, Hello, length 36
Router-ID 2.2.2.2, Backbone Area
Options [V6, External, Router]
Hello Timer 10s, Dead Timer 40s, Interface-ID 0.0.0.1, Priority 128
Neighbor List:
user@r2# run show ospf interface OSPF instance is not running -- Exhibit -
Click the Exhibit button.
Referring to the exhibit, routers r1 and r2 are connected to each other by interfaces ge-5/3/0 and ge-5/3/1 respectively. They do not become OSPF neighbors.
Which two statements are true? (Choose two.)

A) r2 is configured for OSPFv3.
B) r1 is configured for OSPFv3.
C) r2 is configured for OSPFv2.
D) r1 is configured for OSPFv2.

Solutions: