Friday, April 10

Data Communication-I

1. A network that spans a large city is known as a(n) ___________.
a. WAN
b. LAN
c. P2PN
d. MAN

2. The token ring network controls access to the network using ___________.
a. token passing
b. broadcast transmission
c. bus
d. facsimile technology

3. The environment in which most of the processing is done by the server is known as ___________.
a. client/server
b. peer-to-peer
c. EDI
d. file/server

4. One or more computers connected to a hub in a network are known as __________ topology.
a. bus
b. ring
c. star
d. mesh

5. The network type in which all computers have equal status is known as _____________.
a. client/server
b. communications link
c. peer-to-peer
d. LAN

6. Microwave transmission, fiber optics and twisted pairs are examples of ___________.
a. topologies
b. communication links
c. network devices
d. computer networks

7. Signals produced by a computer to be sent over to phone lines must be converted to ______________.
a. digital signals
b. analog signals
c. microwaves
d. radio waves

8. A network that has all nodes on a single cable is known as _______________.
a. bus
b. star
c. ring
d. mesh

9. Devices that transmit and receive satellite signals are known as ____________.
a. earth stations
b. tokens
c. workstations
d. servers

10. The physical layout of a LAN is known as ______________.
a. link
b. network
c. contention
d. topology

11. All of the following are examples of computer networks EXCEPT:
a. L2AN
b. P2PN
c. MAN
d. WAN

12. Which of the following is the most widely used packet switching protocol for WAN application?
a. Ethernet
b. X.25
c. T1
d. TCP/IP

13. Which term describes a computer that is connected to a network?
a. node
b. unit
c. device
d. terminal unit

14. What is the term used to describe the phenomenon when two computers try to send data at the same time using the same network?
a. contention
b. congestion
c. competition
d. communication

15. Which of the following is a WAN connection point that enables users to access the WAN using a local phone call?
a. POP
b. Leased line
c. PVC
d. ISDN

16. To connect to a LAN, a computer must be equipped with _______________.
a. backbone
b. network card
c. both a and b
d. none of the above

17. Which technology enables networks to transmit messages to their correct destination?
a. Packet switching
b. Circuit switching
c. Both a and b
d. None of the above

18. Two examples of ______________ are cable television lines and telephone lines.
a. communication channels
b. communication devices
c. sending devices
d. receiving devices

19. Internet transmissions usually use ______________.
a. Bluetooth
b. Ethernet
c. TCP/IP
d. broadcast transmission

20. Because of its larger size, most ___________ networks require a network administrator.
a. P2P
b. file/server
c. client/server
d. local

21. Sending and receiving devices include _________________.
a. tablet PCs, PDAs, and smart phones
b. mainframes computers and servers
c. desktop computers and notebook computers
d. all of the above

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