CCNT 試験問題を無料オンラインアクセス

Which of the following is true about DSL?

• A.All xDSL technologies require splitters.
• B.DSL Lite refers to DSL that is less expensive than other DSL types.
• C.xDSL requires special DSL lines.
• D.xDSL can use existing modems.

For VoIP, what type of packets are used to prevent corrupted packets from being retransmitted?

• A.TCP/IP
• B.ISDN/IP
• C.CODEC/IP
• D.UDP/IP

How does a router identify VoIP packets for prioritization?

• A.It looks for the gateway's exclusive UDP port number.
• B.None of the above.
• C.Both a and b.
• D.It decompresses the digital signal to determine if it contains voice information.

Path overhead, section overhead, and line overhead are characteristics of:

• A.Satellite radio systems.
• B.DS3 systems.
• C.SONET/SDH.
• D.Undersea fiber cable.

A user on a large, heterogeneous network is running an application on her desktop computer. The application itself is stored on a central server. The network manager uses this arrangement to:

• A.Control individual configuration files.
• B.Prevent network users from installing software on their desktop computers.
• C.Ensure that all network users have the current version of the software application.
• D.Control the location of data files.