Monday, December 23, 2013

UNIT TEST 7 : INFORMATION TECHNOLOGY- ANSWER KEY

1. Use of integrated circuits was made in
 First Generation Computers
 Second Generation Computers
 Third Generation Computers
 Fourth Generation Computers

2. The first mechanical calculator developed by
 Napier
 Blaise Pascal
 Charless Babbage
 IBM

3. Which type of memories is volatile?
 ROM
 PROM
 EPROM
 RAM

4. Computer Memory is measured in
 Bytes
 Kilobytes
 Megabytes
 All the above

5. Arrange the following chronologically according to their use in computers:
(i) Vacuum tube (ii) Microchip (iii) Integrated circuits (iv) Transistors
 (i), (iii), (ii), (iv)
 (i), (ii), (iii), (iv)
 (i), (iv), (iii), (ii)
 (ii), (iv), (iii), (i)

6. The Compact Disk is conceptually referred to as:
I. Magnetic Storage                         II. Compact Storage  
III. Optical Storage                           IV. All the above
Codes:
 I , II and III are correct
 II and III are correct
 I and III are correct
 II and IV are correct

7. Identify the correct order of the evolution of the following storage devices:
 DVD, Magnetic tape, Floppy, CD
 CD, DVD, Magnetic tape, Floppy
 Floppy, CD, DVD, Magnetic tape
 Magnetic tape, Floppy, CD, DVD

8. Which one of the sequences is in ascending order?
 Bytes, Gigabytes, Megabytes, Terabytes
 Bytes, Megabytes, Gigabytes, Terabytes
 Bytes, Terabytes, Megabytes, Gigabytes
 Megabytes, Bytes, Terabytes, Gigabytes

9. The distinguishing features of digital devices are:
(i) Speed (ii) Accuracy (iii) Timeliness (iv) Easy to Carry
 (i) and (ii)
 (ii) and (iv)
 (iv), (iii) and (i)
 (ii), (iii) and (iv)

10. Match the Following:
(a) Fax (b) CD-ROM (c) Floppy Disc (d) Circuit
(i) Optical Storage (ii) Magnetic Storage (iii) Switching System     (iv) Image transmission
 (iv) (i) (ii) (iii)
 (ii) (iii) (i) (iv)
 (i) (ii) (iii) (iv)
 (iii) (ii) (i) (iv)

11. Arrange the following in chronological order of their origin:
(i) Unix (ii) Ms-Dos (iii) Linux (iv) Windows
 (iv), (ii), (iii), (i)
 (ii), (i), (iv), (iii)
 (i), (iii), (iv), (ii)
 (iii), (i), (iv), (ii)

12. Arrange the following in the chronological sequence of their development.
(i) Pascal (ii) Cobol (iii) Fortran (iv) Basic
 (i) (ii) (iv) (iii)
 (iii) (ii) (iv) (i)
 (ii) (iv) (iii) (i)
 (iii) (iv) (ii) (i)

13. Linux is an example of
 Application software
 System software
 Library software
 All of the above

14. Major problems of ‘Information Communication Technology’ are
(i) Information overload (ii) Information insecurity (iii) Lack of innovative technologies (iv) Lack of control over communication
 (ii) and (iv) are correct
 (i) and (iv) are correct
 (i), (ii) and (iv) are correct
 (i), (ii) and (iii) are correct

15. A technique displaying graphic information on screen, pixel by pixel with bits held in main memory is
 Bit handling
 Bit mapping
 Bit pattern
 Bit matrix

16. A dot-matrix printer is a/an
 Input device
 Impact printer
 Non-impact printer
 None of the above

17. Microprocessor is
Used for processing of text
 Collection of programmes for computer system
 Revolving disc on which data is stored
 Graphical user interface working as DOS

18. LCD stands for
 Liquid Color Display
 Light Color Display
 Lithium Crystal Display
 Liquid Crystal Display

19. An individual small dot, which one sees on the computer screen is called
  Font
 Character
 Screen print
 Pixel

20. Which one of the following technique is best suited for Bank Cheques
 OCR
 BAR
 OMR
 MICR

21. The term “Bandwidth” refers to:
 The amount of data that can be sent through communication media
 The amount of data in a multimedia file
 The speed of transmission of data
 Number of bands available in a computer

22. The term “Hypertext” was coined by
 Vannever Bush
 John Brown
 M. C. Kith
 Ted Nelson

23. TCP/IP is necessary if one is to connect to the
 Phone lines
 LAN
 Internet
 A Server

24. Arrange the following layers of OSI model in the sequence in which they function:
(i) Network Layer              (ii) Physical Layer             (iii) Transport Layer        (iv) Data Link Layer
 (iii) (iv) (ii) (i)
 (iv) (ii) (i) (iii)
 (ii) (iv) (i) (iii)
 (i) (ii) (iii) (iv)

25. Which one of the following protocols is used in transferring file over internet?
 POP
 FTP
 SMTP
 TCP/IP

26. How different nodes in a network are connected and how they communicate is determined?
  By Network Connectivity
 By Network Topology
 By Network Compatibility
 None of the above

27. World Wide Web was first designed by
 Charles Babbage
 F.W. Lancaster
 Ted Nelson
 Tim Berner’s Lee

28. Which one of the following is not a switching system?
 Packet
 Circuit
 Router
 Message

29. Hub refers to
  A physical layer device used to interconnect the media segments of an extended network
 A physical layer device that connects multiple computers each via a dedicated cable
 Multiple bridges known for transfer of data between different parts
 A straight line data highway that carries network information from one network station to another

30. In the World Wide Web, name the acronym that describes the internet address of a file
 ULA
 RELUR
 URI

 URL