Juniper JN0-690 : Junos Troubleshooting

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Juniper Junos Troubleshooting Sample Questions:

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

2. Which two statements are true about firewall filters and policers? (Choose two.)

A) If an output firewall filter is configured on the same logical interface as a policer, the firewall filter is executed first.
B) If an output firewall filter is configured on the same logical interface as a policer, the policer is executed first.
C) If an input firewall filter is configured on the same logical interface as a policer, the policer is executed first.
D) If an input firewall filter is configured on the same logical interface as a policer, the firewall filter is executed first.

3. Which statement is correct about troubleshooting?

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

4. Which two tools will help determine the path of a routing loop? (Choose two.)

A) traceroute
B) SNMP
C) routing table data
D) traceoptions

5. Which CLI command is used to restart a software process?

A) reload
B) restart
C) reboot
D) commit

Solutions: