Juniper Junos Troubleshooting 認定 JN0-690 試験問題:

1. Which CLI command would be used to verify the routing protocol daemon memory usage?

A) show route summary
B) show system processes extensive
C) show chassis routing-engine
D) show route detail

2. Click the Exhibit button.
-- Exhibit -=================== Bootstrap installer starting =================== Initialized the environment Routing engine model is RE-S-1800x4 Discovered that flash disk = ad0 , hard disk = ad1 mount: /dev/ad1s1f : Invalid argument ERROR: mount_partition: Mount /dev/ad1s1a /mnt failed You are now in a debugging subshell (you may not see a prompt)... # -- Exhibit -
During the boot of your MX480, you see the output shown in the exhibit. Which three statements are true? (Choose three.)

A) The boot failed because a USB drive has been inserted into the device.
B) The Routing Engine cannot mount the partition to complete booting.
C) Running fsck on the partition might resolve the boot problem.
D) You must swap the Routing Engine over to the backup slot to get it to boot properly.
E) The boot failed because one of the file systems is in an inconsistent state.

3. Which process is responsible for managing interface devices on the system?

A) routing protocol process
B) chassis daemon
C) management daemon
D) device control daemon

4. Click the Exhibit button.
-- Exhibit -user@r2# run show route 100.1.1.0/24 detail
inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
100.1.1.0/24 (1 entry, 1 announced) *Static PreferencE. 5 Next hop typE. Reject Address: 0x8f7b5a4 Next-hop reference count: 2 StatE. Local AS: 65001 AgE. 59 Task: RT Announcement bits (1): 2-KRT AS path: 65005 I
user@r2# show protocols bgp
group ibgp { type external; export to-bgp; neighbor 10.1.2.1 { local-address 10.1.2.2; family inet { unicast; } family inet6 { unicast; } peer-as 65005; }
}
user@r2# run show bgp summary Groups: 1 Peers: 1 Down peers: 0 Table Tot Paths Act Paths Suppressed History Damp State Pending inet6.0
0 0 0 0 0 0 inet.0 0 0 0 0 0 0 Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
10.1.2.1 65005 31 31 0 0 12:08 Establ inet6.0: 0/0/0/0 inet.0: 0/0/0/
user@r2# show policy-options
policy-statement to-bgp { from protocol static; then accept;
}
user@r2# run show route advertising-protocol bgp 10.1.2.1
[edit] user@r2# -- Exhibit -
Referring to the exhibit, router r2 does not advertise the static route to peer 10.1.2.1. What is the problem?

A) An AS path loop is detected.
B) The export policy is incorrect.
C) The static route has Next hop typE. Reject.
D) The export policy should be applied under the [edit protocols bgp group ibgp neighbor 10.1.2.1] hierarchy.

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

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

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