PPSC Computer Science Chapter 1 Basic Computer Knowledge Online Test With Answers

PPSC Computer Science Chapter 1 Basic Computer Knowledge Online Test

Sr. # Questions Answers Choice
1 A data transmission medium made of tiny treads of glass or plastic that can transmit huge amount of information at the speed of light is. Fiber optic cable Copper cable Twisted wire cable None
2 A device used for transmission of images scanned at a transmitting point and duplicated at a receiving point. Facsimile (FAX) Telephone Photocopier None
3 Extended SACII uses 8 bits for coding 9 bits for coding 10 bits for coding 11 bits for coding
4 A semiconductor memory which allows the eraser of the information started in it so that new information can be stared in it is referred as. EPROM ROM RAM None
5 Data communications involving telegraph lines uses. Simplex lines Wideband channels Narrowbarid channels Dialed service
6 Communications device combines transmissions from several devices into on line is. Concentrator Modifier Multiplexer full duplex line
7 Distributed data processing configuration where all activates passes through a centrally located computer is. Ring network Spider network Hierachicar network Data control network
8 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
9 Microsoft Excel is. Financial planning package Electronic spreadsheet Graphics package Data base management package.
10 The primary memory of a personals computer consists. ROM only RAM only Both ROM and RAM Memory module
11 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
12 Digital computer is a computer. That works with discrete quantities. That works with analog quantities Botha A and B None
13 Electronic mail system is similar or best suits to Postal service Telephone service Telegraph service None
14 A data communication facility on which data can be transmitted in two direction is referred as. Duplex Simplex Triplex None
15 EBCDIC is. 6 -bit coding system 7-bit coding system 8-bit coding system 9- bit coding system
16 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
17 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
18 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
19 Diagnostic routines is a. Programs used to print error messages Indicates system problems and improper program instructions Both A and B are true None
20 Process of finding/correcting program errors is Bugs Debugging Hacking Cracking
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