PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 Mnemonic a memory trick is used in which of the following language. Machine language Assembly language High level language None of above
2 Instruction of computer languages consists of OPCODE OPERAND Both of above None
3 Which is directly understood by the computer without translation program. Machine language Assembly language High level language None of above
4 Which of the following is ot computer language. High level language Medium level language Low level language All of the above
5 Software in computer Enhances the capabilities of the hardware machine Increase the speed of central processing unit Both of above None of these
6 Which statement is valid about computer program. it is understood by a computer It is understood by programmer It is understood user Both of above
7 Which statement is valid. 1 KB = 1024 bytes 1 MB = 2048 bytes 1 MB =1000 kilobytes 1 KB = 1000 bytes
8 Binary circuit elements have One stable state Two stable state Three stable state None of above
9 Hard disk is coated in both side above Magnetic metallic oxide Optical metallic oxide Carbon layer All of the above
10 Floppy disk typically in diameter 3 inches 25 inches 5 inches All above
11 Floppy disks are available in Single side single density Single side double density Both of above None of these
12 Latency time is. Time to spin the needed data under head Time to spin the needed data under track Time to spin data under sector All of above
13 Seek time is Time to position the head over proper track Time to position the head over proper sector Time to position the head over proper cylinder None of above
14 Access time is Seek time + latency time Seek time Seek time-latency time Latency time
15 Reading data is performed in magnetic disk by Read Sectors Track Lower surface
16 Storage capacity of magnetic disk depends on Tracks per inch of surface Bit per inch of tracks Disk pack in disk surface All of above
17 Magnetic disks are the most popular medium for. Direct access Seuential access Both of above None of these
18 Tape speed is measure din Feet per second Inch per second Meter per second Centimeter per second
19 Which of the following is associated with error detector. Odd parity bit Even parity bit Both of the above None of above
20 The data recording format in most of the modern magnetic tape is 7-bit ASCII 7-bIt EBCDIC 8-bit ASCII 8-bit EBCDIC
21 Which statement is valid about magnetic tape. It is a plastic ribbon It is coated on both sides with iron oxide It can be erased and reused All of above
22 A storage area used to store data to a companies for the difference in speed at which the different units can handle data is. Memory Buffer Accumulator Address
23 Which of the following will happen when data is entered into a memory location. It will add to the content of the location It will change the address of the memory location It will erase the previous content It will not be fruitful if there is already some data at the location.
24 An output device that uses words or messages recorded on a magnetic medium to produce audio response is. Magnetic tape Voice response unit Voice recognition unit Voice band
25 Which printer is very commonly used for desktop publishing Laser printer Inkjet printer Daisywheel printer Dot matrix printer
26 Floppy disk which are made from flexible plastic material are also called. Hard disks High density disks Diskettes Templates
27 A compared to diskettes the hard disks are. More expensive More portable Less rigid Slowly accessed
28 A kind of serial Dot matrix printer that forms characters with magnetically charged ink sprayed dots is called. Laser printer Ink Jet printer Drum printer Chan printer
29 The two kinds of main memory are Primary and secondary Radom and Seuential ROM and RAM All of above
30 Dot-matrix is a type of Tape Printer Disk Bus
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