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Juniper Junos Troubleshooting Sample Questions:

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

2. Given the example shown below:
Emergency boot media > flash disk > _____
What is missing from the default boot list?

A) USB
B) hard disk
C) LAN
D) PCMCIA card

3. -- 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) r2 is configured for OSPFv2.
C) r1 is configured for OSPFv2.
D) r1 is configured for OSPFv3.

4. In the Junos OS, which type of file dumps the program's environment in the form of memory pointers, instructions, and register data to a file in the event of a panic or other serious malfunction?

A) configuration file
B) backup file
C) log file
D) core file

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

Solutions: