a) How operating systems creates an impression of doing several jobs at the same time
An operating system is an organised collection of a suite of programs which controls and
supervises computer system hardware and provides services to programmers and users of a
computer system. Operating systems have such features as; it performs control oriented tasks
such as multiprogramming, multi-processing and batch processing, allow 'for time-sharing such
that multiple users can access a single computer system at one time and allows for concurrent
execution of programs so as to enhance speedy processing of data.
b) i) Define the term : “real time processing system” A real-time operating system is an
operating system that guarantees a certain capability within a specified time constraint. A key
characteristic of an RTOS is the level of its consistency concerning the amount of time it takes to
accept and complete an application task,
ii) Examples of real-time processing systems
Anti-missile defense systems, airplane landing control system, flight simulation systems,
electronic fund transfer systems, and tickets reservation systems.
Kavungya answered the question on May 13, 2019 at 13:26
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Differentiate between:
i. Multitasking and single tasking operating system
ii. old booting and warm booting
(Solved)
Differentiate between:
i. Multitasking and single tasking operating system
ii. old booting and warm booting
Date posted:
May 13, 2019
.
Answers (1)
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Fourth generation languages (4GL’s) consist of a variety of software tools which enable end
users to .develop software applications with minimal or no technical assistance or...
(Solved)
Fourth generation languages (4GL’s) consist of a variety of software tools which enable end
users to .develop software applications with minimal or no technical assistance or that enhance
the productivity of professional programmers.
Required:
Describe the features of 4GLs which make them to be preferred by programmers for application
development.
Date posted:
May 13, 2019
.
Answers (1)
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Mr. Charles Midika operates a computer bureau which specializes in preparing customers'
curriculum vitae (CVs) and in developing and printing organizations’annual
Required:
Identify four features of computer software...
(Solved)
Mr. Charles Midika operates a computer bureau which specializes in preparing customers'
curriculum vitae (CVs) and in developing and printing organizations’annual
Required:
Identify four features of computer software which would be suitable for Mr. Charles Midika's
bureau.
Date posted:
May 13, 2019
.
Answers (1)
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A systems developer requires a range of software utilities.
Required:
Define the term "software utility" and describe three types of software utilities.
(Solved)
A systems developer requires a range of software utilities.
Required:
Define the term "software utility" and describe three types of software utilities.
Date posted:
May 13, 2019
.
Answers (1)
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The following diagram gives an overview of computer software:
Required:
Identify two examples of each of the following computer software’s:
i. General purpose application programs.
ii. Application specific...
(Solved)
The following diagram gives an overview of computer software:
Required:
Identify two examples of each of the following computer software’s:
i. General purpose application programs.
ii. Application specific programs.
iii. System management programs.
iv. Systems development programs.
Date posted:
May 13, 2019
.
Answers (1)
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People who use modern general purpose computers usually observe three layers of computer
software performing a variety of tasks
Identify and briefly describe the three layers of...
(Solved)
People who use modern general purpose computers usually observe three layers of computer
software performing a variety of tasks
Identify and briefly describe the three layers of computer software as usually observed by
general purpose computer users
Date posted:
May 13, 2019
.
Answers (1)
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(i) Briefly explain the term "machine level programming language".
(ii) State two advantages and three disadvantages of a machine level programming language.
(Solved)
(i) Briefly explain the term "machine level programming language".
(ii) State two advantages and three disadvantages of a machine level programming language.
Date posted:
May 13, 2019
.
Answers (1)
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a) Outline four examples of computer utility programs,
b) Briefly discuss four factors to be considered when, selecting open source software.
(Solved)
a) Outline four examples of computer utility programs,
b) Briefly discuss four factors to be considered when, selecting open source software.
Date posted:
May 13, 2019
.
Answers (1)
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Explain the following computer hardware and software specifications:
iv. LinuxMint II.
v. LibreOffice Impress
(Solved)
Explain the following computer hardware and software specifications:
iv. LinuxMint II.
v. LibreOffice Impress
Date posted:
May 13, 2019
.
Answers (1)
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Discuss the factors that determine the processing power of a computer.
(Solved)
Discuss the factors that determine the processing power of a computer.
Date posted:
May 13, 2019
.
Answers (1)
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a) Distinguish between the following terms in the context of information communication
technology (ICT):
i. Workstation and server.
ii. Light pen and digitizer.
b) Highlight the benefits of secondary...
(Solved)
a) Distinguish between the following terms in the context of information communication
technology (ICT):
i. Workstation and server.
ii. Light pen and digitizer.
b) Highlight the benefits of secondary storage in data management.
Date posted:
May 13, 2019
.
Answers (1)
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Briefly explain the functions of the following peripheral devices of a computer system
i. Webcam
ii. Head set
iii. Joystick
(Solved)
Briefly explain the functions of the following peripheral devices of a computer system
i. Webcam
ii. Head set
iii. Joystick
Date posted:
May 13, 2019
.
Answers (1)
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a) Highlights six hardware devices found inside the computers’ system unit.
b) Briefly describe four classifications of printers based on their technology
(Solved)
a) Highlights six hardware devices found inside the computers’ system unit.
b) Briefly describe four classifications of printers based on their technology
Date posted:
May 13, 2019
.
Answers (1)
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a) Explain the two main reasons why the following types of memory are used for certain
functions in a computer:
i. Random access memory (RAM).
ii. Read only...
(Solved)
a) Explain the two main reasons why the following types of memory are used for certain
functions in a computer:
i. Random access memory (RAM).
ii. Read only memory (ROM).
b) Identify three local area network (LAN) connecting devices.
c) Distinguish between "serial" and "parallel" processing.
d) Briefly explain three benefits of secondary storage.
Date posted:
May 13, 2019
.
Answers (1)
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Describe the following characteristics of computer "memory
i. Mutability
ii. Accessibility
iii. Addressability
iv. Volatility
(Solved)
Describe the following characteristics of computer "memory
i. Mutability
ii. Accessibility
iii. Addressability
iv. Volatility
Date posted:
May 13, 2019
.
Answers (1)
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a. (i) Explain the use of two equipment’s used during videoconferencing,
(ii) Highlight two advantages of videoconferencing to an organisation.
b. Briefly describe the following types of...
(Solved)
a. (i) Explain the use of two equipment’s used during videoconferencing,
(ii) Highlight two advantages of videoconferencing to an organisation.
b. Briefly describe the following types of computer hardware:
i. Video graphic array splitter.
ii. System unit.
iii. Universal serial bus port.
Date posted:
May 13, 2019
.
Answers (1)
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Describe four output devices that could be found in a television broadcasting station
(Solved)
Describe four output devices that could be found in a television broadcasting station
Date posted:
May 13, 2019
.
Answers (1)
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(i) Defme the term “optical storage media”.
(ii) Explain four types of optical storage media.
(Solved)
(i) Defme the term “optical storage media”.
(ii) Explain four types of optical storage media.
Date posted:
May 13, 2019
.
Answers (1)
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Explain the following computer hardware and software specifications:
i. Intel ® Core (TM) is 650@ 3.20 GHz 3.33GHz
ii. 2.00GB (1.87 GB usable)
iii. TFT 17” Lenovo.
(Solved)
Explain the following computer hardware and software specifications:
i. Intel ® Core (TM) is 650@ 3.20 GHz 3.33GHz
ii. 2.00GB (1.87 GB usable)
iii. TFT 17” Lenovo.
Date posted:
May 13, 2019
.
Answers (1)
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Define the term "primary storage" in the context of computing.
(Solved)
Define the term "primary storage" in the context of computing.
Date posted:
May 13, 2019
.
Answers (1)