CCNT 무료 덤프문제 온라인 액세스

An IP-enabled PBX:

• A.Can serve many PC phones in multiple locations.
• B.Allows conventional phones, IP phones and PC phones to function in the same way.
• C.Connects directly to a TCP/IP network without a gateway.
• D.All of the above.

What is NOT true about the projected future for DSL?

• A.DSL will replace ISDN in many areas.
• B.DSL installations will continue to increase.
• C.DSL will compete with cable modem for providing service to homes and businesses.
• D.DSL will replace Ethernet in many areas.

Which of the following statements about digital interfaces is true?

• A.E1 carries more voice/fax connections than T1.
• B.All of the above.
• C.E1 is used more in the United States, whereas T1 is common in Europe.
• D.E1 and T1 interfaces both connect to the WAN.

A DS1 has:

• A.A frame rate of 4,000 frames per second.
• B.24 DS0s plus a framing bit in each frame.
• C.A bit rate of 1.536 Mbps.
• D.30 B channels plus 1 D channel.

The signal processing board is also called a:

• A.Signal bus connection.
• B.Data processing board.
• C.PBX-key systems integrator.
• D.Voice board.