Exam 7: Wan Transport Methods

Frame relay is a connection-oriented service.

On an X.25 network, the ____ protocol defines start and stop transmissions between the DTE and the DCE.

There can only be one X.25 virtual connection over one physical connection, or communications cable.

When using the LMI protocol, the DLCI is always 0.

DSL comes in many versions and is gathering interest among network administrators because it can turn existing twisted-pair telephone wire into a high-speed WAN for communications up to 55 Mbps (downstream).

The figure above shows the ____________________ format.

Which is not true about IDSL?

When you use a modem to access the Internet, you most likely use PPP.

The figure above is an example of a(n)X.25 frame.

What are the three methods of failure recovery offered by SONET? Upon what does the method used depend?

One of the most promising ____ projects is the development of an interface to ATM.

SONET travels in a(n)bus topology.

____ is an audio communications technique that is used over the Internet for audio communications.

The first P in PAP stands for ____________________.

A ____ identifies an individual virtual connection on a frame relay network.

____ is used more commonly for remote communications because it has greater capabilities and incorporates stronger security.

Each LAN that is connected to the Optical Ethernet backbone has the same priority and the same bandwidth.

Which is not true about both X.25 and frame relay?

____ is not an example of packet switching.

LAPF is also referred to as the Q.921 protocol.