COMPUTER STUDIES QUESTIONS WITH ANSWERS
List two examples of:Third generation languages and Object oriented languages
b) List and explain three types of user interfaces.
c) Describe the following categories of software: i) Firmware ii) Proprietary software d) a new company XYZ intends to go into the business of desktop publishing. Advise the company on three computer hardware system specification features to consider as a measure of enhancing performance.
(a) One of the functions of an operating system is job scheduling.
Explain what is meant by job- scheduling Running of a particular job/ task under a system of priority, computer resource availability, time allocated to user etc. (b) List and explain three types of user interfaces
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The diagram below shows a formatted plate surface of a storage disk.
Shade and label:
a) one sector b) One block State two ways in which a computer may be used in efficient running of a hospital (2mks)
​Explain how each of the following would affect the suitability of a room for use as a computer room. (2mks)(a) Burglar proofed doorenhances the security system as it prevents Unauthorized users from entering (b) Availability of taps and sinks in the roomCould be detrimental since water can cause damage to computer equipment Related SearchesDescribe the purpose of each of the following computer functional units(a) ControlEssentially governs all the computer activities and monitors the execution of programs. (b) StorageTo holds internally before and after processing. Divided into two i.e. primary and secondary Primary holds data and information being handled by the CPU. Secondary stores data and information in a more permanent form Explain the following software terms: Portability and Modularity
(a)Portability
Ability of a software to work/ function in several computer hardware and O/S platforms (b)Modularity Ability of software to be broken down into several sections for easier understanding and maintenance. Differentiate between COM ports and LPT ports
What actions should be taken in case of a fire outbreak in the computer laboratory?
(a) The diagram below represents the essential features of a computer system. Study the diagram and answer the questions that follow:
(i) Name the components: (4mks)(a) Give one difference between internal and external commands in Disk Operating System (2mks)
(b) Name two DOS commands that may be used for checking disk errors (1mk)
(a) State two differences between Disk Operating System (DOS) and WINDOWS operating system.
(b)
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Primary Memory |
Secondary Memory |
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1. Capacity |
Low storage capacity |
High storage capacity |
2. Storage mechanism |
Volatile (loses content when power is switched off) |
Non-Volatile (does not lose content when power is switched off) |
3. Speed of storage/access/retrieval of information |
Fast |
Slow |
4. Storage terms |
Store data temporary unless it is a special type of ROM |
Store data permanently |
5. Examples |
RAM and ROM |
Optical Disks such as DVDs, Magnetic Disks such as HardDisk, Solid state disks such as Flash disk and Memory stick |
6. Uses |
Handles data currently needed by the computer |
Stores data that is needed for future reference or data being transfered from one machine to another. |
State two methods of minimizing dust in a computer laboratory
- Regular cleaning and mopping
- Computer laboratory should be built while doors facing away from wind direction.
- Ensure proper ventilation in the computer laboratory
- Dry cleaning methods should be observed.
- Air blowing
- Use a carpeted/tiled floor (gathers dust slowly and does not raise dust)
- Users to remove muddy shoes or clean them to ensures that no dust is carried to the room.
Blind
i) State one area where computers are used. (2 mks)
- Medicine
- Industries
- Retails stores
- Research
a) What is an operating system? (1mk)
application software)
b) State and briefly explain an two types of operating systems. (6mks)
Difference between Job Scheduling and Job Sequencing
Introduction
- Controlling the loading and running of programs
- Communicating directly with users and/or the operator
- Dealing with user commands to organise files and run programs
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What is an operating system?
An operating system is a group of programs that manage all activities on the computer [J Onunga & Shah, 2003]
An operating system is the main program that controls the execution of user applications and enables the user to access hardware and software resources of a computer [S.Mburu & G Chemwa, 2004] An Operating System, or OS, is low-level software that enables a user and higher-level application software to interact with a computer’s hardware and the data and other programs stored on the computer. ~ https://www.informatics.indiana.edu/rocha/academics/i101/pdfs/os_intro.pdf An operating system (OS) is a large and complex set of system programs that control the various operations of a computer system and provide a collection of services to other (user) programs. The purpose of an operating system involves two key goals:
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