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Exam Code: JN0-690
Exam Name: Juniper (Junos Troubleshooting)
One year free update, No help, Full refund!
Total Q&A: 70 Questions and Answers
Last Update: 2013-10-05

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NO.1 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
Answer: B

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NO.2 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.
Answer: D

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NO.3 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
Answer: D

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NO.4 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
Answer: C

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NO.5 Which CLI command is used to restart a software process?
A. restart
B. reboot
C. commit
D. reload
Answer: B

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NO.6 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
Answer: B

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NO.7 Which CLI command applies the candidate configuration to the active configuration?
A. load
B. merge
C. copy run start
D. commit
Answer: C

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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.
Answer: B,C,E

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NO.9 Which operational CLI command would you use to troubleshoot hardware-related problems?
A. show system
B. show chassis
C. show route
D. show cli
Answer: C

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NO.10 What is the name of the routing protocol process on a Junos OS device?
A. chassisd
B. snmpd
C. rpd
D. cosd
Answer: D

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