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Juniper Junos Troubleshooting Sample Questions:

1. What is the name of the routing protocol process on a Junos OS device?

A) snmpd
B) cosd
C) chassisd
D) rpd

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

3. Which three statements are correct about ARP related troubleshooting? (Choose three.)

A) An individual ARP entry can be cleared using the clear arp hostname command.
B) The monitor traffic interface <interface-name> command can be used to watch ARP packets.
C) Most devices that run the Junos OS allow you to specify a manual ARP entry.
D) The clear arp command also clears the IPv6 neighbor cache.
E) There are no default ARP policers on any devices running the Junos OS.

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

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

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

A) A log for rpd scheduler slip is an indication of something that should be investigated and resolved.
B) A possible cause for an overworked rpd is excessive protocol tracing.
C) A possible method to troubleshoot rpd scheduler slips is to temporarily enable task accounting.
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.

Solutions: