Which two features would be deployed to prevent DoS attacks? (Choose two.)
A. ARP policer
B. periodic packet management (PPM)
C. loopback filter
D. Bidirectional Forward Detection (BFD)
正解:A,C
質問 2:
You are notified about a router reboot event.
Which command would be helpful in determining the reason for the last reboot?
A. show system snapshot
B. show chassis craft-interface
C. show chassis routing-engine
D. show system reboot
正解:C
質問 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.
正解:B
質問 4:
Which process is responsible for managing interface devices on the system?
A. management daemon
B. device control daemon
C. chassis daemon
D. routing protocol process
正解:B
質問 5:
An interface on your Junos device reports a device-level flag of Loopback-detected.
What is causing this flag to be reported?
A. The interface is in promiscuous mode and sees frames addressed to all physical addresses on the medium.
B. The link-layer protocol failed to successfully connect with the remote endpoint.
C. The interface was administratively disabled.
D. The interface link layer received its own frames.
正解:D
質問 6:
By default, in which table are OSPF routes stored on a Junos device?
A. inet.0
B. inet.3
C. inet.2
D. inet.1
正解:A
質問 7:
-- Exhibit -
user@router> show system switchover
Graceful switchover: On
Configuration databasE. Ready
Kernel databasE. Version incompatible
Peer statE. Steady State
-- Exhibit -
You have enabled graceful Routing Engine switchover (GRES). During verification, you switched mastership and all interfaces went down.
Referring to the output shown in the exhibit, why did the interfaces go down?
A. The synchronization failed because the master Routing Engine cannot communicate with the backup Routing Engine.
B. The synchronization failed because the Routing Engine models are different between the master and backup.
C. The synchronization failed because the Junos OS version on the backup does not support GRES.
D. The synchronization failed because the Junos OS version on the backup is incompatible with the version running on the master.
正解:D
平田** -
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