COMPUTER STUDIES QUESTIONS WITH ANSWERS
Give two importance of feedback mechanism in systems
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Differentiate between in-house software and freeware.
Describe the following types of printers and state one application area of each. Dot matrix A dot-matrix printer is an impact printer that produces printed images with a print head striking mechanism. The print head of a dot matrix printer is implemented in an array of pins arranged in rows and columns. To print a character, the required sets of pins are activated and sruck against an inked ribbon leaving the image on paper. Application – in banks for printing bank slips Thermal printer.
It is a non impact printer that uses a chemically treated paper that changes color to form characters when subjected to heat. Application – in photo studios to print pictures State two factors that one would consider when selecting data entry method in computing.
State the purpose of each of the following memories in a computer system. ROM
RAM
Give TWO reasons why Powder type fire extinguishers are not recommended to be used in a computer laboratory.
Network Interface Card (NIC) A device that creates a physical link between a computer and the Network GatewayA computer or device that connects networks with different protocols or internet BridgeA device that divides a network into segments Repeatera device that receives a weak signal, cleans, amplifies it and the retransmit
Distinguish between logical and physical network topology
Advantages of satellite transmission
Headgear
Virtual reality:
Artificial intelligence
Components of expert system
Physical features of human beings that can be considered in biometric analysis
Reasons why users may resist introduction of information system in place of work
Advantages of questionnaire over interview
Reason why HTML is not considered as a true programming language
Meaning of “what if analysis”
Distinguish between workbook and a worksheet
Factors to consider when buying input devices
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