单项选择题

An administrator would like to know the name of the workstation that is being repaired. Which ofthe following commands, without parameters, will provide this information?（）

A.Hostname
B.Ipconfig
C.Netstat
D.Ping

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单项选择题

A user is attempting to connect to the network remotely using a laptop and dial-up. The user plugsthe cable into the only available laptop connection, but the connector is loose inside the port. TheMOST likely reason the connector is loose is the:（）

A. RJ-11 connector needs to be re-crimped
B. User has plugged into the laptop's NIC port
C. User has plugged the wrong end of the cable into the port
D. RJ-11 connector needs to be replaced with an RJ-45 connector

单项选择题

Which of the following analyzes the entire subnet to identify all hosts that are active?（）

A. Ping sweep
B. Packet sniffer
C. Traceroute
D. Port scanner

单项选择题

On which of the following network devices would an administrator configure an ACL?（）

A.Router
B.Hub
C.Repeater
D.NIC