最新のJN0-690問題集で試験を準備する

Juniper JN0-690 試験概要:

Juniper JN0-690 試験シラバストピック:

Juniper Junos Troubleshooting 認定 JN0-690 試験問題：

問題 #1

You are asked to configure traceoptions to capture all general events for rpd.
Which configuration statement accomplishes this task?

A. [edit forwarding-options]
user@router# show
traceoptions {
file rpd_log;
flag general;
}
B. [edit routing-instances]
user@router# show
traceoptions {
file rpd_log;
flag general;
}
C. [edit protocols]
user@router# show
traceoptions {
file rpd_log;
flag general;
}
D. [edit routing-options]
user@router# show
traceoptions {
file rpd_log;
flag general;
}

問題 #2

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

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

問題 #3

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

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

問題 #4

You suspect that your router is missing the .0/24 routes for your local network. You first want to look for the routes on the control plane before troubleshooting the data plane.
Which operational mode command should you issue?

A. show arp
B. show route forwarding-table
C. show route flow validation table
D. show route

問題 #5

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

解説：