單項(xiàng)選擇題

Which command will delete the current rescue configuration?（）

A. user@router# system delete configuration rescue
B. user@router> request system configuration rescue delete
C. user@router# delete rescue configuration
D. user@router> file delete rescue-configuration

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單項(xiàng)選擇題

Using the routing table shown in the exhibit, what will be the next-hop IP address used for destination IP address 192.168.1.1? （）

A. 10.20.14.130
B. 10.18.1.1
C. 10.20.14.131
D. 10.20.106.10

單項(xiàng)選擇題

You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）

A. 510
B. 1022
C. 2046
D. 8190