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Juniper JN0-690 Exam Syllabus Topics:

Juniper Junos Troubleshooting Sample Questions:

1. Which two tools would be used to troubleshoot BGP peering problems? (Choose two.)

A) the monitor traffic interface command
B) traceoptions
C) the link-state database
D) the inet.3 routing table

2. Click the Exhibit button.
-- Exhibit -user@R1> show pfe statistics traffic Packet Forwarding Engine traffic statistics:
Input packets: 47593914461368 2 pps Output packets: 28805646 3 pps Packet Forwarding Engine local traffic statistics: Local packets input : 36278104324
Local packets output : 2
Software input control plane drops : 0
Software input high drops : 0
Software input medium drops : 0
Software input low drops : 0
Software output drops : 0
Hardware input drops : 191367536738 Packet Forwarding Engine local protocol statistics:
HDLC keepalives : 0
ATM OAM : 0
Frame Relay LMI : 0
PPP LCP/NCP : 0
OSPF hello : 3883169
OSPF3 hello : 0
RSVP hello : 1440704
LDP hello : 4782297
BFD : 0
IS-IS IIH : 0
LACP : 0
ARP : 765512
ETHER OAM : 0
Unknown : 1897610 Packet Forwarding Engine hardware discard statistics:
Timeout : 0
Truncated key : 0
Bits to test : 0
Data error : 0 Stack underflow : 0 Stack overflow : 0 Normal discard : 191367536738 Extended discard : 0 Invalid interface : 0 Info cell drops : 191367536738 Fabric drops : 191367536738
Packet Forwarding Engine Input IPv4 Header Checksum Error and Output MTU Error statistics: Input Checksum : 0 Output MTU : 0
-- Exhibit -
Referring to the exhibit, which counter indicates a possible denial of service attack?

A) normal discard
B) hardware input drops
C) fabric drops
D) info cell drops

3. A technician has reported an alarm on your device running the Junos OS. You suspect it is due to the temperature in the rack. Which two commands will confirm your suspicion? (Choose two.)

A) show chassis firmware
B) show chassis hardware
C) show chassis alarms
D) show chassis environment

4. 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) show interfaces terse
D) monitor traffic interface

5. 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) Isolate the problem.
E) Determine who made the changes.

Solutions: