PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 Data communications involving telegraph lines uses. Simplex lines Wideband channels Narrowbarid channels Dialed service
2 Communications device combines transmissions from several devices into on line is. Concentrator Modifier Multiplexer full duplex line
3 Distributed data processing configuration where all activates passes through a centrally located computer is. Ring network Spider network Hierachicar network Data control network
4 All the keys on the IBM PC keyboard repeat as long as one hold them down these key are knows as. Typematic keys Functional keys Automatic keys Alphabetic keys
5 Microsoft Excel is. Financial planning package Electronic spreadsheet Graphics package Data base management package.
6 The primary memory of a personals computer consists. ROM only RAM only Both ROM and RAM Memory module
7 The subdivision of fields. Always done to give the programmer greater flexibility Dependent on programming language used. Never accomplished on fields containing numeric data All above
8 Digital computer is a computer. That works with discrete quantities. That works with analog quantities Botha A and B None
9 Electronic mail system is similar or best suits to Postal service Telephone service Telegraph service None
10 A data communication facility on which data can be transmitted in two direction is referred as. Duplex Simplex Triplex None
11 EBCDIC is. 6 -bit coding system 7-bit coding system 8-bit coding system 9- bit coding system
12 The time period during which a computer is main functioning or not operating correctly due to machine failures is referred as. Downtime Up time Run time None
13 The speed at which data is transferred from the main memory to another medium on which data are recorded is referred at. Data transfer rate Byte Buds None
14 The item BDMS is referred to. Data Base Management system. The software used for the management maintenance and retrieval of the data stored in a data base. A and B both true None
15 Diagnostic routines is a. Programs used to print error messages Indicates system problems and improper program instructions Both A and B are true None
16 Process of finding/correcting program errors is Bugs Debugging Hacking Cracking
17 The first electronic general purpose digital computer built by Motley and accrete called ENIAC did not work on the strode program concept How many numbers could it stored in its internal memory. 100 20 40 80
18 When did IBM introduced the 80286 based PC/AT 1982 1984 1985 1989
19 How many address lines are needed to address each memory location in a 2048 x 4 memory chip. 10 11 8 12
20 Microprocessors can be sued to make Computer Digital csystem Calculators All of the above
21 Which of the following register is used to keep track of address of the memory location where the next instruction is located. Memory address register Memory data register Instruction register Program counter
22 Offline device is A device which is not connected to CPU A device which is connected to CPU A direct access storage device An I/O device
23 Which was the computer conceived by Babbade. Analytical engine Arithmetic machine Donald Knuth All of abvoe
24 The most commonly used standard dta code to represent alphabetical numerical and punctuation characters used in electronic data processing system is called. ASCII BCD EBCDIC All of above
25 The first electronic computer in the world was. UNIAC ENIAC EDVAC All of abvoe
26 The octal equivalence of 111010 is 81 72 71 None of these
27 A floppy disk contains Circular tracks only Sectors only Both circular tracks and sectors All of the above
28 The difference between memory and storage is that memory is and storage is. Temporary permanent Permanent temporary Slow ,fast All of above
29 Which of the following is secondary memory device. Keyboard Disk ALU All of above
30 A name or number used to identify a storage location is called. A byte A record An address None of above
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