The OS defines a job which has predefined sequence of commands, programs and data as a single unit.
The OS keeps a number a jobs in memory and executes them without any manual information.
Jobs are processed in the order of submission, i.e., first come first served fashion.
When a job completes its execution, its memory is released and the output for the job gets copied into an output spool for later printing or processing.
chegedict answered the question on March 23, 2020 at 08:01
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What are the advantages of distributed operating systems?
(Solved)
The advantages of distributed systems are as follows -
With resource sharing facility, a user at one site may be able to use the resources available at another.
Speedup the exchange of data with one another via electronic mail.
If one site fails in a distributed system, the remaining sites can potentially continue operating.
Better service to the customers.
Reduction of the load on the host computer.
Reduction of delays in data processing.
Date posted:
March 21, 2020
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Answers (1)
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Briefly describe distributed operating systems.
(Solved)
Distributed systems use multiple central processors to serve multiple real-time applications and multiple users. Data processing jobs are distributed among the processors accordingly.
The processors communicate with one another through various communication lines (such as high-speed buses or telephone lines). These are referred as loosely coupled systems or distributed systems. Processors in a distributed system may vary in size and function. These processors are referred as sites, nodes, computers, and so on.
The advantages of distributed systems are as follows -
With resource sharing facility, a user at one site may be able to use the resources available at another.
Speedup the exchange of data with one another via electronic mail.
If one site fails in a distributed system, the remaining sites can potentially continue operating.
Better service to the customers.
Reduction of the load on the host computer.
Reduction of delays in data processing.
Date posted:
March 21, 2020
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Answers (1)
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Highlight three disadvantages of time sharing operating systems
(Solved)
Time-sharing is a technique which enables many people, located at various terminals, to use a particular computer system at the same time. Time-sharing or multitasking is a logical extension of multiprogramming. Processor's time which is shared among multiple users simultaneously is termed as time-sharing.
The main difference between Multiprogrammed Batch Systems and Time-Sharing Systems is that in case of Multiprogrammed batch systems, the objective is to maximize processor use, whereas in Time-Sharing Systems, the objective is to minimize response time.
Disadvantages of Time-sharing operating systems are as follows -
Problem of reliability.
Question of security and integrity of user programs and data.
Problem of data communication.
Date posted:
March 21, 2020
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Answers (1)
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Describe time sharing operating systems.
(Solved)
Time-sharing is a technique which enables many people, located at various terminals, to use a particular computer system at the same time. Time-sharing or multitasking is a logical extension of multiprogramming. Processor's time which is shared among multiple users simultaneously is termed as time-sharing.
Date posted:
March 21, 2020
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Answers (1)
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What are the problems associated with batch operating systems?
(Solved)
The users of a batch operating system do not interact with the computer directly. Each user prepares his job on an off-line device like punch cards and submits it to the computer operator. To speed up processing, jobs with similar needs are batched together and run as a group. The programmers leave their programs with the operator and the operator then sorts the programs with similar requirements into batches.
The problems with Batch Systems are as follows -
Lack of interaction between the user and the job.
CPU is often idle, because the speed of the mechanical I/O devices is slower than the CPU.
Difficult to provide the desired priority
Date posted:
March 21, 2020
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Answers (1)
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Explain batch operating systems
(Solved)
Explain batch operating systems.
Date posted:
March 21, 2020
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Answers (1)
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What are the activities of the operating systems with regard to file management?
(Solved)
What are the activities of the operating systems with regard to file management?
Date posted:
March 21, 2020
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Answers (1)
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What are the activities of the operating systems with regard to device management?
(Solved)
What are the activities of the operating systems with regard to device management?
Date posted:
March 21, 2020
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Answers (1)
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What are the activities of the operating systems with regard to processor management?
(Solved)
What are the activities of the operating systems with regard to processor management?
Date posted:
March 21, 2020
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Answers (1)
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List and explain 4 applications of an operating systems
(Solved)
List and explain 4 applications of an operating systems.
Date posted:
March 21, 2020
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Answers (1)
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Distinguish between a workbook and a worksheet as used in spreadsheets
(Solved)
Distinguish between a workbook and a worksheet as used in spreadsheets
Date posted:
October 1, 2019
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Answers (1)
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Discuss FIVE areas in the Kenyan context where E-commerce has witnessed growth.
(Solved)
Discuss FIVE areas in the Kenyan context where E-commerce has witnessed growth.
Date posted:
July 5, 2019
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Answers (1)
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Describe various services provided by operating systems
(Solved)
Describe various services provided by operating systems.
Date posted:
April 29, 2019
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Answers (1)
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What are the major activities of the following operating systems services. (a)error handing. (b)resources management.
(Solved)
What are the major activities of the following operating systems services.
(a)error handing.
(b)resources management.
Date posted:
April 29, 2019
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Answers (1)
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Briefly explain the classification of operating systems according to interface
(Solved)
Briefly explain the classification of operating systems according to interface.
Date posted:
April 29, 2019
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Answers (1)
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Explain the classification of operating systems according to number of users
(Solved)
Explain the classification of operating systems according to number of users.
Date posted:
April 29, 2019
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Answers (1)
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What is meant by the term convoy effect?
(Solved)
What is meant by the term convoy effect?
Date posted:
April 27, 2019
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Answers (1)
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List and explain five functions of an operating system
(Solved)
List and explain five functions of an operating system.
Date posted:
April 27, 2019
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Answers (1)
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Explain the following types of schedulers. (a)long term scheduler. (b)short term scheduler. (c)medium term scheduler
(Solved)
Explain the following types of schedulers.
(a)long term scheduler.
(b)short term scheduler.
(c)medium term scheduler
Date posted:
April 27, 2019
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Answers (1)
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Describe the guidelines that assist system auditors detect and deter fraud occurrences in an organization
(Solved)
Describe the guidelines that assist system auditors detect and deter fraud occurrences in an organization
Date posted:
March 27, 2019
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Answers (1)