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ITSC 1301 Introduction to Computers
Chapter 9 Homework Questions
True or False. Type in a "T" or "F" in the blank to the left of the question.
__ 1. Computer communications refers to the transfer of data, instructions, and information from one
computer to another.
__ 2. Communication channels include various transmission media, such as cables, telephone lines, and
radio waves.
__ 3. A dial-up line provides a permanent connection between the sending and receiving devices.
__ 4. DSL is much easier to install and has faster data transfer rates that ISDN.
__ 5. FTP (file transfer protocol) is an internet standard that allows you to upload and download files to
& from a web server.
__ 6. The telephone network uses digital technology with the exception of the final link.
__ 7. Fiber optic cable consists of one or more twisted wires, bundled together.
__ 8. The configuration or physical layout of the equipment in a communications network is called the
network topology.
__ 9. A multiplexing involves converting digital signals to analog signals.
__10. A coaxial cable can be cabled over longer distances than twisted-pair cable.
__11. A modem can be used as a stand-alone computer.
__12. Asynchronous transfer mode carries voice, data, video, and multimedia at extremely high speeds.
__13. If a computer fails to function in a Ring network, all other computers in that network will be
unaffected and continue to function normally.
__14. If the hub is inoperable in a Star network, the entire network in inoperable until the hub is fixed.
__15. TCP/IP is a set of protocols used to manage the transmission of data by breaking it up into
packets.
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Multiple Choice. Type your choice for the most correct option in the blank on the left.
__16. _____________ signal transmissions are limited to line-of-sight transmissions.
A.
B.
Microwave
Cellular radio
C. Satellite
D. Fiber-optic
__17. The __________ type of transmission media uses light to transmit signals over strands of glass or
plastic.
A. coax
C. twisted-pair
B. fiber-optic
D. none of the above
__18.
_____________ involves using video and computer technology to allow participants to conduct a
meeting at two or more geographically separate locations..
A. Telecommuting
C. Groupware
B. Videoconferencing
D. Telephony
__19.
Most computers process data in the form of ___________ signals.
A. digital
C. Morse code
B. analog
D. microwave
__20.
An internal modem is actually a/an ______________.
A. box inside the computer
C. card inserted into a slot in the motherboard
B. chip inside the computer
D. demodulator
__21.
A client/server network, is a network in which one or more computers act as a _________.
A. server
C. user
B. bus
D. None of the above
__22. A wide area network uses ___________ as a means of communications channels.
A. telephone lines
C. cables
B. airwaves
D. all of the above
__23.
A __________ is a collection of computers, and other devices that use communications channels
to share resources.
A. system
C. network
B. hardware resource sharing
D. topology
__24. A _________ line uses a regular telephone line to establish a communications connection.
A. leased
C. dial-up
B. bus
D. private
__25. A communications satellite has a transfer rate of ________
A. 1 to 4 Mbps
C. up to 2 Mbps
B. 50 Mbps
D. 45 Mbps