computer quiz 4

Quiz-4

1. The vast network of computers that connects millions of people all over the world is called.
(1)LAN
(2)web
(3)hypertext
(4)internet
(5)None of these


2. The property that, when classes are arranged in a hierarchy, each class assumes the attributes and methods of its ancestors is
(1) generalization
(2) inheritance
(3) encapsulation
(4) information hiding
(5) None of these



3. The software component of an expert system that draws conclusions is the.
(1)user interface
(2)database
(3)inference engine
(4)1/0 controller
(5)model base

4. The attributes and methods for each object are stored in.
(1) an object instance
(2) an object connection
(3) an assembly structure
(4) an object repository
(5) None of these

5. An E-R diagram is a graphic method of presenting
(1) primary keys and their relationships
(2) primary keys and their relationships to instances
(3) entity classes and their relationships
(4) entity classes and their relationships to primary keys
(5) None of the above

6. The OCR is used for the preparation of
(1) electricity bills
(2) insurance premium
(3) telephone bills
(4) All of these
(5) None of these

7. Speed of line printer is limited by the speed of
(1) paper movements
(2) cartridge used
(3) length of paper
(4) All of these
(5) None of these

8. In laser printers, printing is achieved by deflecting laser beam on to surface of a drum
(1) magnetized
(2) photosensitive
(3) magnetic
(4) Either (1)or (2)
(5) None of these

9. Resolution of laser printer is specified in terms of
(1) DPI
(2) LPM
(3) CPM
(4) PPM
(5) None of these

10. What are the units used to count the speed of a printer?
(1) CPM
(2) DPI
(3) PPM
(4) BIT
(5) None of these

11. The binary equivalent of decimal number 98 is
(1) 1110001
(2) 1110100
(3) 1100010
(4) 1111001
(5) None of these

12. The product of two binary numbers (1011) and (1001) is
(1) 1100011
(2) 1010100
(3) 1011001
(4) 100110
(5) None of these

13. A byte represents a group of
(1) 10 bits
(2) 40 bits
(3) 8 bits.
(4) 22 bits
(5) None of these

14. A hexadigit can be represented by
(1) three binary (consecutive) bits
(2) four binary (consecutive) bits
(3) eight binary (consecutive) bits
(4) sixteen binary (consecutive) bits
(5) None of the above

15. When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits?
(1) ANSI
(2) ASCII
(3) EBCDIC
(4) ISO
(5) None of these

16. Which of the following statements in regard to directories is false?
(1) Directories with files can be deleted
(2) Directories cannot be renamed
(3) The root directory is always at the highest level
(4) Directories can exist inside directories
(5) None of the above

17. This part of operating system manages the essential peripherals, such as the keyboard, screen , disk drives, and parallel and serial ports_____
(1) basic input/output system
(2) secondary input/output system
(3) peripheral input/output system
(4) marginal input/output system
(5) None of these

18. MS-DOS is usually supplied on a
(1) hard disk
(2) cartridge tape
(3) CD ROM
(4) floppy disk or diskettes
(5) None of these

19. Which one of the following is not a DOS prompt ?
(1) C >
(2) B >
(3) A >
(4) ENTER
(5) None of these.

20. Which one of the following is not an internal DOS command?
(1) BACKUP
(2) COPY
(3) CLS
(4) BREAK
(5) None of these



ANSWERS
1. 4     2. 2     3. 3       4. 4     5. 3     6. 4      7. 1      8. 2      9. 1       10. 4
11. 3    12. 1    13. 3    14. 2    15. 1    16. 2   17. 1    18. 4    19. 4    20. 1

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