JN0-690 by Juniper Valid Free Exam Practice Test

Question 1

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

Correct Answer: B,C,E

Question 2

Which statement is correct about troubleshooting?

A. The problem must be reproducible before attempting a potential solution. B. You must always have a complete understanding of the problem before you begin gathering any information. C. Establishing a network baseline is important to help understand when something is not working. D. You must be sure the problem will be resolved before attempting a potential solution.

Correct Answer: C

Question 3

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

A. show system B. show cli C. show chassis D. show route

Correct Answer: A

Explanation: Only visible for ExamsLabs members. You can sign-up / login (it's free).

Question 4

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

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

Correct Answer: C

Question 5

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

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

Correct Answer: A

Question 6

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

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

Correct Answer: C

Question 7

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

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

Correct Answer: A,D

Juniper Junos Troubleshooting - JN0-690 Exam Practice Test