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Juniper Junos Troubleshooting Sample Questions:

1. Click the Exhibit button.
-- Exhibit -
Slot 0 information: State Online Total CPU DRAM ---- CPU less FPC ---Start time 2012-07-07 03:21:00 UTC Uptime 27 minutes, 51 seconds Slot 1 information: State Present Reason --- Hardware Not In Right Slot --Slot 2 information: State Online Total CPU DRAM 32 MB Start time 2012-07-07 03:20:59 UTC Uptime 27 minutes, 52 seconds Slot 3 information: State Present Reason --- Hardware Not Supported --Total CPU DRAM 0 MB Slot 6 information: State Online Total CPU DRAM 32 MB Start time 2012-07-07 03:21:01 UTC Uptime 27 minutes, 50 seconds
-- Exhibit -
Referring to the exhibit, which three statements are true? (Choose three.)

A) The Control Board in slot 0 has a missing CPU.
B) The Flexible PIC Concentrator (FPC) in slot 6 is online and working.
C) The card in slot 3 is not supported by the chassis.
D) The Control Board in slot 6 is online and working.
E) The Flexible PIC Concentrator (FPC) in slot 1 is not installed properly for this chassis.

2. A client has reported that they cannot establish an FTP connection to your Junos device.
Which command would you use to diagnose the problem?

A) monitor interface traffic
B) show interfaces extensive
C) monitor traffic interface
D) show interfaces terse

3. Which two actions are required when performing a unified in-service software upgrade (ISSU)? (Choose two.)

A) You must disable nonstop bridging (NSB) if the Layer 2 Control Protocol is in use.
B) You must disable graceful Routing Engine switchover (GRES) if the Layer 2 Control Protocol is in use.
C) You must enable nonstop active routing (NSR).
D) You must enable graceful Routing Engine switchover (GRES).

4. Click the Exhibit button.
-- Exhibit -user@host> request system software add ... WARNING: The /var filesystem is low on free disk space. WARNING: This package requires 1 k free, but there WARNING: is only 666502k available. -- Exhibit -
Which three commands are useful in identifying and addressing the cause of the lack of disk space? (Choose three.)

A) request system software add validate
B) request system storage cleanup
C) show system directory-usage
D) show chassis routing-engine
E) show system storage

5. -- Exhibit -[edit] user@R1# run show interfaces ge-1/1/2 terse Interface Admin Link Proto Local Remote ge-1/1/2 up up ge-1/1/2.0 up up aenet --> ae0.0
[edit] user@R1# run show interfaces ge-1/1/3 terse Interface Admin Link Proto Local Remote ge-1/1/3 up up ge-1/1/3.0 up up aenet --> ae0.0
[edit]
user@R1# run show interfaces ae0 terse
Interface Admin Link Proto Local Remote
ae0 up down
ae0.0 up down bridge
[edit]
user@R1# show interfaces ae0
aggregated-ether-options {
lacp {
periodic slow;
system-priority 200;
}
}
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 100;
}
}
**************************************************************************
[edit]
user@R2# run show interfaces ge-1/1/2 terse
Interface Admin Link Proto Local Remote
ge-1/1/2 up up
ge-1/1/2.0 up up aenet --> ae0.0
[edit]
user@R2# run show interfaces ge-1/1/3 terse
Interface Admin Link Proto Local Remote
ge-1/1/3 up up
ge-1/1/3.0 up up aenet --> ae0.0
[edit]
user@R2# run show interfaces ae0 terse
Interface Admin Link Proto Local Remote
ae0 up down
ae0.0 up down bridge
[edit]
user@R2# show interfaces ae0
aggregated-ether-options {
lacp {
periodic fast;
system-priority 100;
}
}
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 100;
}
}
-- Exhibit --
You have configured a LAG and are now enabling LACP on the ae0 interface. You have configured and committed the configuration as shown in the exhibit. However, the exhibit also shows that the ae0 interface is now in the up/down state.
What must you do to resolve this problem?

A) Configure both routers' ae0 LACP configuration to periodic fast.
B) Configure R2's LACP configuration as passive.
C) Change the LACP system-priority of R1 to 300.
D) Configure R1's LACP configuration as active.

Solutions: