Exam 1, material covered: Ch. 1-10, pp. 1-86, plus classroom and lab material and discussion.
COMP128 Computer Science Problem Solving	Name_________________________ NAID_________________________

Exam 1, Fall 1999

(6 pages, 100 points == 12% of semester grade, approximately)

1. When it becomes universal, the Internet will be a:
a. nuisance
b. necessity *
c. nightmare
d. new invention

2. A phonograph plays an exact analog of sound. What kind of device is a phonograph?
a. digital
b. analog *
c. any of them
d. none of them

3. When is an electrical device analog?
a. if the amount of electrical current it generates is proportional to its input. *
b. if the amount of electrical current it generates is equal to its input.
c. if the amount of electrical current it generates is inversely proportional to its input.
d. None of them.

4. Which one is not true?
a. An analog device always distorts the input and adds noise.
b. An integrated circuit is informally called a chip.
c. Inside a computer, all information is represented by numbers.
d. A computer is an analog device. *

5. What is an A-to-D converter?
a. An electrical circuit that converts a sequence of numbers to an analog signal.
b. An electrical circuit that amplifies a signal.
c. An electrical circuit that stores data.
d. An electrical circuit that converts an analog signal to a sequence of numbers. *

6. The telegraph is a digital technology, because:
a. it transfers discrete clicks. *
b. it transfers a continuous varying signal.
c. it transfers information quickly.
d. it was popular.

7. Morse didnít assign a symbol for which code?
a. ë?í
b. ë%í
c. ë$í
d. both b and c*

8. What kind of encoding does the Internet use?
a. hexadecimal
b. binary*
c. decimal
d. octal.

9. A technique that transmits voice well is known as:
a. modulation*
b. demodulation
c. amplification
d. none of them

10. Which one is not true?
a. Modem is an abbreviation for modulator/demodulator.
b. Modem uses a modulator to send the signal.
c. Modem uses a demodulator to receive the signal.
d. Modem does not have any modulator or demodulator. *

11. ASCII assigns a ________________ code to each letter and digit.
a. 7-bit*
b. 8-bit
c. 2-bit
d. 5-bit

12. What happens when electric or magnetic interference disrupts signals on a wire?
a. Nothing.
b. Data can be damaged or lost. *
c. Signal becomes stronger.
d. Data transmitting become faster.

13. Researchers found they could detect small errors if they added an extra bit to a characterís code. What is the name of the extra bit?
a. 8^th bit
b. ASCII bit
c. Parity bit*
d. Error detector bit.

14. Which is true:
a. Parity can help detect errors and solves the problem completely.
b. The Internet uses more powerful error detection techniques.
c. LAN is an abbreviation for Local Area Network.
d. Both b and c. *

15. Inside a computer, electronic components reside on thin, flat rectangular boards. Name these boards?
a. Mother boards.
b. Electronic boards.
c. Interface boards.
d. Circuit boards. *

16. The advantage of LANs is they are:
a. Inexpensive.
b. Highly reliable
c. Convenient to install and manage.
d. All of the above. *

17. The chief advantage of a direct connection from one computer to another is:
a. Speed*
b. Cost
c. Convenience
d. all of the above.

18. Heterogeneous computers can communicate across a LAN, because:
a. speed of the LAN depends on the speed of the computers attached to it.
b. speed of the LAN does not depend on the speed of the computers attached to it.
c. only the network interface circuits are used during transmission or reception of data.
d. Both b and c. *

19. The most significant change that LAN technologies produced was:
a. time sharing
b. resource sharing *
c. energy saving
d. none

20. One can not plug together multiple LANs because:
a. a given LAN technology is engineered to operate over a limited distance.
b. each LAN technology has its own specification for electrical signals like voltage and frequency; different LAN technologies may be electrically incompatible.
c. Each technology has a way of encoding information; the encoding used by one LAN system does not make sense to another.
d. All of the above. *

21. A computer needs additional __________________ to connect it to a local area network.
a. manpower.
b. hardware*
c. room
d. none

22. A particular ____________ technology may only work with specific computers.
a. WAN
b. LAN*
c. Both of them
d. None of them

23. TCP stands for:
a. Termination Control Policy.
b. Transmission Control Protocol. *
c. Transmission Communication Policy
d. Terminal Control Projects.

24. ____________ still remain much less expensive and more popular than __________ .
a. LANs, WANs*
b. WANs, LANs

25. Two pieces of Internet software stand out as particularly important and innovative. They are:
a. TCP/IP software. *
b. FTP/IP software.
c. TCP/FTP software.
d. All of the above.

26. The Internet is a/an _____________ system because the specifications needed to build TCP/IP software or use the Internet are available to everyone.
a. isolated.
b. closed.
c. open*
d. complex.

27. The UNIX system became one of the first operating systems that students could study, because :
a. Bell labs allowed universities to obtain copies of the UNIX system for use in teaching and research. *
b. universities are funded by U.S. Government for UNIX system.
c. universities are forced by U.S. Government for UNIX system.
d. Students used to buy UNIX system by themselves.

28. One computer attached to a LAN can access ______________________.
a. resources and information on remote machines.
b. resources and information on local machines. *
c. resources and information on both local and remote machines.
d. resources and information on neither local nor remote machines.

29. When did the Internet change from a small, experimental research project into the worldís largest computer network?
a. From 1966 to 1976.
b. From 1976 to 1986.
c. From 1986 to 1996. *
d. From 1996 to 1998.

30. A team of computer scientists at Bell Telephone Laboratories built a new operating system in the early 1970s. What is the name of this system?
a. The UNIX Timesharing System. *
b. The Bell Operating System.
c. The BSD UNIX System
d. The Universal Operating System.

31. Because it spans many countries, people often refer to the Internet as:
a. The World Wide Internet
b. The Global Internet *
c. The Communication Internet
d. None of these

32. Countries having no Internet connectivity can use what kind of technology to send electronic mail?
a. UUCP
b. BITNET
c. FIDONET *
d. All of them

33. The EBONE is a ______________ that spans Europe and connects sites to the global Internet.
a. WAN*
b. LAN
c. WAN and LAN
d. WAN and LAN

34. The telegraph changed the basic communication infrastructure because:
a. it introduced high-speed message delivery. *
b. it was cost free.
c. both a and b
d. None of them.

35. The process of moving files from your computer at a remote location is:
a. download
b. upload*
c. reload
d. none of them.

36. The process of moving files from a computer at a remote location to your own is:
a. download*
b. upload
c. reload
d. none of them

37. What is a web browser?
a. A software application that lets you create your own homepage.
b. A software application that lets you connects with any remote machine.
c. A software application that lets you browse the WWW. *
d. A software application that is nothing but a transfer protocol.

38. Which is not a web browser.
a. Netscape Navigator
b. Microsoft Internet Explorer.
c. Yahoo*
d. Both ëaí and ëbí

39. Which one is not e-mail host system within the HECN?
a. badlands
b. plains
c. prairie
d. Mulberry*

40. A ______________ is a program or a piece of hardware that passes data between networks.
a. Gateway*
b. FTP
c. ISP
d. Compiler.

41. The duty/duties of the BIOS are
a. it gives the computer a little built-in starter kit to run the rest of software from FDD and HDD.
b. It is responsible for booting the computer by providing a basic set of instructions.
c. It performs all the tasks that need to be done at start-up time.
d. All of them. *

42. IACC stands for:
a. International Academy for Computer Communication.
b. Institute for Agriculture and Computer Communication.
c. Industrial Agriculture and Communications Center. *
d. Industrial Agriculture and Computer Center.

43. What is the name of the millennium bug?
a. Year 2000 bug
b. Y2K. *
c. Year 1999 bug
d. 00 bug

44. A/an _________ address is a unique string of numbers that identifies a computer on the Internet.
a. IP *
b. TCP
c. ISP
d. URL.

46. What is the address of a web page?
a. IP
b. TCP
c. ISP
d. URL *

47. ___________ is the worldís first educational and scientific computing society.
a. AICC
b. ACM*
c. ISC
d. ASCII

48. What is the abbreviation for World Wide Web?
a. WWW
b. W3
c. Both*
d. None

49. One megabyte contains:
a. 1,000,000 ( 1000 X 1000 ) bytes
b. 1,048,576 ( 1,024 X 1,024 )bytes*
c. 1,048,576 bits
d. 1,000,000 bits

50. A server is:
a. a machine on a network
b. a process on a machine *
c. a request
d. None of them