Exam 6: Data Link Control and Multiplexing

Two types of multiplexing techniques discussed in this chapter are FDM and _______.

The two commonly used forms of ARQ are "stop-and-wait" and "go back N".

A major source of expense in any business distributed data processing environment is transmission cost.

A multiplexing technique where multiple users use distinct time slots such that the transmitted bits are shared by all users is called ___________.

Physical interface standards include all of the required functions for data communication.

A multiplexing technique where multiple users use distinct carrier frequencies separated such that the modulated signals do not overlap is called ___________.

Which of the following is NOT one of the example applications of T-1 leased transmission facilities?

________ uses multiple carrier signals at different frequencies,sending some of the bits on each channel.

________ is a technique for assuring that a transmitting entity does not overwhelm a receiving entity with data.

Data link control protocols provide mechanisms by which the two sides cooperate in the retransmission of frames that are detected to include errors.

__________ is an optical transmission interface that was originally designed for the public telephone network and has been standardized by ANSI for voice,long-haul data,and / or video traffic applications.

When ________ is used,the radio spectrum used to connect mobile devices and cell towers is divided into separate frequency channels; each channel is capable of carrying one call.

The higher the ________ rate,the more cost-effective the transmission facility.

The term "SONET" corresponds to:

_______ is the most heavily used multiplexing technique and is familiar to anyone who has ever used a radio or television set.

_________ standards provide a means by which a stream of data can be transmitted,either synchronously or asynchronously,onto a transmission medium.

________ is used on SONET to support long-haul voice,data,and video applications over fiber-optic circuits.

Which of the following is NOT a common component of an error control process?

A __________ frame is a recognizable frame that arrives,but some of the bits have been altered during transmission.

A disadvantage of sliding window flow control is that it is not supported by many data link control protocols.