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QUESTION NO: 9

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 diagnostics optics

C. show chassis alarms

D. show interfaces controller

Correct Answer: B

Explanation

Explanation/Reference:

Explanation:

QUESTION NO: 5

Which operational CLI command would you use to display information about the system and software

processes?

A. show system

B. show chassis

C. show route

D. show cli

Correct Answer: A

Explanation

Explanation/Reference:

Explanation:

Show route will only show you routing, show system will show you software related information:

>show system ?

Possible completions:

alarms Show system alarm status

audit Show file system MD5 hash and permissions

auto-snapshot Show auto-snapshot status when system booted from alternate slice autoinstallation Show

autoinstallation information

autorecovery Show autorecovery information

boot-messages Show boot time messages

buffers Show buffer statistics

certificate Show installed X509 certificates

commit Show pending commit requests (if any) and commit history configuration Show configuration

information

connections Show system connection activity

core-dumps Show system core files

directory-usage Show local directory information

download Show status of downloads

firmware Show all firmware version information

health Show online diagnostic status

license Show feature licenses information

login Show system login state

memory Show system memory usage

processes Show system process table

queues Show queue statistics

reboot Show any pending halt or reboot requests

resource-cleanup Show resource cleanup information

rollback Show rolled back configuration

services Show service applications information

snapshot Show snapshot information

software Show loaded JUNOS extensions

statistics Show statistics for protocol

storage Show local storage data

threads Show system threads table

uptime Show time since system and processes started

users Show users who are currently logged in

virtual-memory Show kernel dynamic memory usage

QUESTION NO: 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. log file

B. backup file

C. configuration file

D. core file

Correct Answer: D

Explanation

Explanation/Reference:

Explanation:

Junos will under a panic create a core-dump file, definitely not a backup file.

> show system core-dumps

/var/crash/*core*: No such file or directory

/var/tmp/*core*: No such file or directory

/var/tmp/pics/*core*: No such file or directory

/var/crash/kernel.*: No such file or directory

/tftpboot/corefiles/*core*: No such file or directory

QUESTION NO: 6

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

A. chassisd

B. snmpd

C. rpd

D. cosd

Correct Answer: C

Explanation

Explanation/Reference:

Explanation:

The Routing Process Deamon (RPD) handle Routing. COSD handle Class of service.

QUESTION NO: 2

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

A. load

B. merge

C. copy run start

D. commit

Correct Answer: D

Explanation

Explanation/Reference:

Explanation:

Copy run start is a Cisco specific command and is nowhere to be found in Junos.

>commit Commit current set of changes

QUESTION NO: 7

Which statement is correct about troubleshooting?

A. You must always have a complete understanding of the problem before you begin gathering any

information.

B. You must be sure the problem will be resolved before attempting a potential solution.

C. The problem must be reproducible before attempting a potential solution.

D. Establishing a network baseline is important to help understand when something is not working.

Correct Answer: D

Explanation

Explanation/Reference:

Explanation:

QUESTION NO: 3

Which operational CLI command would you use to troubleshoot hardware-related problems?

A. show system

B. show chassis

C. show route

D. show cli

Correct Answer: B

Explanation

Explanation/Reference:

Explanation:

Show route will only show you routing, show chassis will show you hardware related information.

>show chassis ?

Possible completions:

alarms Show alarm status

cluster Show chassis cluster information

craft-interface Show craft interface status

environment Show component status and temperature, cooling system speeds fan Show fan and fan tray

information

firmware Show firmware and operating system version for components forwarding Show forwarding

process (fwdd) status

fpc Show Flexible PIC Concentrator status

hardware Show installed hardware components

location Show physical location of chassis

mac-addresses Show media access control addresses

pic Show Physical Interface Card state, type, and uptime routing-engine Show Routing Engine status

temperature-thresholds Show chassis temperature threshold settings usb Show chassis USB status

QUESTION NO: 8

Which three steps are involved in troubleshooting any problem? (Choose three.)

A. Reboot the device.

B. Clearly define the problem.

C. Outline the expected behavior.

D. Determine who made the changes.

E. Isolate the problem.

Correct Answer: BCE

Explanation

Explanation/Reference:

Explanation:

QUESTION NO: 10

Which command would be helpful in determining the time at which the protocols started?

A. show route

B. show chassis hardware

C. show configuration

D. show system uptime

Correct Answer: D

Explanation

Explanation/Reference:

Explanation:

QUESTION NO: 1

Which CLI command is used to restart a software process?

A. restart

B. reboot

C. commit

D. reload

Correct Answer: A

Explanation

Explanation/Reference:

Explanation:

To restart a process one have to use restart , reboot is not even a valid command.

Possible completions:

restart Restart software process

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