Introduction to Data Communications and Networking

15. A _______ is a data communication system within a building, plant, or campus, or between nearby buildings. A) LAN B) MAN C) WAN D) none of the above

A

2. ______ refers to the physical or logical arrangement of a network. A) Topology B) Mode of operation C) Data flow D) None of the above

A

22. Which organization has authority over interstate and international commerce in the communications field? A) FCC B) IEEE C) ITU-T D) ISOC

A

24. Communication between a computer and a keyboard involves ______________ transmission. A) simplex B) half-duplex C) full-duplex D) automatic

A

27. In a _______ connection, more than two devices can share a single link. A) multipoint B) point-to-point C) primary D) secondary

A

29. An unauthorized user is a network_______ issue. A) Security B) Reliability C) Performance D) All the above

A

5. Which topology requires a multipoint connection? A) Bus B) Star C) Mesh D) Ring

A

6. A ________ is a set of rules that governs data communication. A) protocol B) forum C) standard D) none of the above

A

11. A television broadcast is an example of _______ transmission. A) half-duplex B) simplex C) full-duplex D) automatic

B

16. _______ refers to two characteristics:when data should be sent and how fast it can be sent. A) Semantics B) Timing C) Syntax D) none of the above

B

20. ________ is a collection of many separate networks. A) A WAN B) An internet C) A LAN D) None of the above

B

21. In a ________ connection, three or more devices share a link. A) point-to-point B) multipoint C) (a) and (b) D) none of the above

B

28. _______ refers to the structure or format of the data, meaning the order in which they are presented. A) Semantics B) Syntax C) Timing D) All of the above

B

3. A ______ is a data communication system spanning states, countries, or the whole world. A) MAN B) WAN C) LAN D) none of the above

B

7. In a ______ connection, two and only two devices are connected by a dedicated link. A) multipoint B) point-to-point C) (a) and (b) D) none of the above

B

9. ________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation. A) Syntax B) Semantics C) Timing D) None of the above

B

10. Frequency of failure and network recovery time after a failure are measures of the _______of a network. A) Performance B) Security C) Reliability D) Feasibility

C

13. _______ are special-interest groups that quickly test, evaluate, and standardize new technologies. A) Standards organizations B) Regulatory agencies C) Forums D) All of the above

C

17. This was the first network. A) CSNET B) NSFNET C) ARPANET D) ANSNET

C

19. _______ is the protocol suite for the current Internet. A) UNIX B) NCP C) TCP/IP D) ACM

C

25. Which topology requires a central controller or hub? A) Mesh B) Bus C) Star D) Ring

C

26. The _______ is the physical path over which a message travels. A) Protocol B) Signal C) Medium D) All the above

C

30. ________ is an idea or concept that is a precursor to an Internet standard. A) RCF B) ID C) RFC D) none of the above

C

31. In _______ transmission, the channel capacity is shared by both communicating devices at all times. A) simplex B) half-duplex C) full-duplex D) half-simplex

C

4. A _______ connection provides a dedicated link between two devices. A) primary B) multipoint C) point-to-point D) secondary

C

8. The information to be communicated in a data communications system is the _______. A) Medium B) Protocol C) Message D) Transmission

C

1. There are ______________ Internet service providers. A) regional B) local C) national and international D) all of the above

D

12. Data flow between two devices can occur in a _______ way. A) simplex B) half-duplex C) full-duplex D) all of the above

D

14. Which agency developed standards for physical connection interfaces and electronic signaling specifications? A) ISO B) ITU-T C) ANSI D) EIA

D

18. Devices may be arranged in a _____topology. A) mesh B) ring C) bus D) all of the above

D

23. In the original ARPANET, _______ were directly connected together. A) routers B) host computers C) networks D) IMPs

D