In the Junos OS, what is the default behavior of a switch when it receives a frame with an unknown destination MAC address?
A. It buffers the frame until the MAC address can be learned.
B. It discards the frame.
C. It floods the frame out of all ports except the one it was received on.
D. It sends the frame to its default gateway.
正解:C
質問 2:
You are troubleshooting a downed BGP session.

Referring to the exhibit, what is the cause of the problem?
A. The local peer has sent an Open message but not received one from the remote peer.
B. The TCP session between the peers has not been established.
C. The local peer has sent an Update message but not received one from the remote peer.
D. The UDP session between the peers has not been established.
正解:B
解説: (Pass4Test メンバーにのみ表示されます)
質問 3:
Which two statements are correct about aggregated Ethernet bundles? (Choose two.)
A. You must specify which interfaces are members of a specific aggregated Ethernet bundle.
B. You must enable the chassis to support aggregated Ethernet interfaces.
C. You must purchase a services license for the chassis to support aggregate Ethernet interfaces.
D. You must enable LACP when configuring aggregated Ethernet bundles.
正解:A,B
質問 4:
What type of BGP is used for routing within the same autonomous system?
A. Static BGP
B. IBGP
C. EBGP
D. Dynamic BGP
正解:B
質問 5:
Which two statements are correct about aggregate routes and generated routes? (Choose two.)
A. A generated route has a forwarding next hop.
B. An aggregate route has a forwarding next hop.
C. A generated route does not have a forwarding next hop.
D. An aggregate route does not have a forwarding next hop.
正解:A,D
解説: (Pass4Test メンバーにのみ表示されます)
質問 6:
When configuring High Availability components, which of the following practices are recommended? (Choose two)
A. Implement regular testing of failover mechanisms.
B. Ensure physical redundancy of critical components.
C. Use a single path for data and control traffic.
D. Regularly update firmware to non-recommended versions.
正解:A,B
質問 7:
What are three correct layer names used in legacy hierarchical network design? (Choose three.)
A. Modular layer
B. Core layer
C. Aggregation layer
D. Access layer
E. Function layer
正解:B,C,D
解説: (Pass4Test メンバーにのみ表示されます)
桑原** -
JN0-281アプリバージョンで過去問を何回か解いて2週間ほどの勉強で合格できました。