1111. Data is transmitted character by character in _________.
A. Synchronous mode
B. Asynchronous mode *
C. Remote communication
D. Satellite mode
1112. All of the following are guided communication media except __________.
A. Fiber-optic cable
B. Wire cable
C. Coaxial cable
D. Satellite -based Microwave communication *
1113. Which of the following cable is comprised of two separate insulated copper wires that are twisted ?
A. Fiber optics
B. Twisted pair wire *
C. Coax
D. Submarine
1114. Communication between a computer and keyboard involves______transmission_________.
A. Half duplex
B. Full- duplex
C. Simplex *
D. Automatic
1115. The encoding scheme of data represents as __________.
A. EBCDIC code
B. ASCII code
C. Unicode
D. All of the above *
1116. The ________ is the physical path over which a message travels _______.
A. Single
B. Double
C. Protocol
D. Medium *
1117. Following devices are used in simplex mode _________.
A. Radio
B. Television
C. A and B *
D. Multiplexers
1118. The characteristics of analog carrier waves are ________.
A. Binary numbers
B. Frequency
C. Amplitude
D. B and C *
1119. A fibre-optic cable consists of tubes of _________.
A. Mirror
B. Glass *
C. Rubber
D. Wooden
1120. Wireless modems transmit the data signals through________.
A. Air *
B. Cable
C. Gateway
D. None of the above