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Advantages of storing files in folders. (4 marks)
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Properties that an operating system displays about a file. (2 marks)
What will happen if you attempt to delete a folder while a file contained in it is Open? (1 mark)
Explain the following terms as used in disk management using operating system: (i) Disk defragmentation. (2 marks) Process of putting together scattered files to fasten access speed (ii) Disk clean up (2 marks)
Process of deleting and removing files on the hard disk that may no longer be needed e.g. files on cache, internet files, installation files State and explain four functions of an operating system
Explain the meaning of backup
A computer user may interact with a computer either through Graphical User Interface GUI) or through typed commands.
Describe the role of an operating system in:
Distinguish between a menu driven operating system and graphical user interface operating system19/7/2023 Distinguish between a menu driven operating system and graphical user interface operating system MENU DRIVEN INTERFACE
THE GRAPHICAL USER INTERFACE (GUI)
The operating system stores details of a file for easy identification and retrieval of files. Explain any four file details the operating system uses to search and identify a file
Define the term file in relation to the operating system
Explain any four factors that dictates how the operating system organizes data in a computer19/7/2023 Explain any four factors that dictates how the operating system organizes data in a computer
State any four factors to consider when selecting an operating system
Differentiate between in-house software and freeware.
Purpose of disk partitioning
What is meant by disk partitioning?
Process of diving a large physical disk into two or more partitions called logical drives. How OS manage computer memory
State three functions of an operating system
A computer diskette in drive A has folders for MEMOS for an administrator. Each of these folders is labelled according to the relevant months. The secretary created the folders for each month’s memo for each of access. Study the table below
A computer diskette in drive A has folders for MEMOS for an administrator. Each of these folders is labelled according to the relevant months. The secretary created the folders for each month’s memo for each of access. Study the table below
(a) Assuming that the secondary was working from the diskette, draw the corresponding tree structure (6mks)
(b) (i) The secretary wanted to create a folder to store a memo in Fraud folder. State the path for that folder. (2mks)
A:/MEMO2/Fraud
(ii) Suggest how the secretary can ensure that the work in that diskette is not spoilt. (1mk)
(iii) The content of the file is not viewed by any other person apart from her. (1mk)
use of password
(c) (i) List any two devices under the control of the operating system. (2mks)
(ii) Explain how each one of these devices are controlled by the OS - Operating System
Input/output devices and ports
In most cases, the operating system controls all data input and information output tasks. Because most input/output devices are slower than the processor, the operating system has to control the flow of data from the time of input to the time the user receives it as information. It ensures that the right data reaches the processor at the right time. The operating system also defines the various input/output ports found on the computer e.g. printer port.
The processor
The processor is a scarce resource. It executes tasks called processes. At any one time several tasks may require processing hence creating competition. The operating system arranges the tasks according to priority and has the ability to stop a particular task to allow the processor to service another one.
Main memory(RAM)
At any one given time so many tasks may require the memory so that they can be accessed and processed by the computer.However,because memory is also a scarce resource,the operating system determines which task will remain in memory awaiting for execution and which one will be sent back to secondary storage to wait. Because the operating system is large and very important, it is usually installed on the hard disk but must be loaded to RAM during the booting process. Not all the operating system can fit in RAM so a small special part that contains the most necessary commands and procedures called the kernel is the one that is loaded.
Secondary storage devices
The operating system manages the storage and retrieval of data on secondary storage devices. It also utilizes the free space on hard disks to enhance the performance of the computer by temporarily holding tasks on it that were in RAM ready for processing but have to wait for sometime.
Communication devices and ports
Communication in this case refers to how the various devices and programs in and out of the computer system send and receive messages from one another and from the processor. The operating system controls the overall communication process between various tasks and computers. External communication can be achieved by connecting an external device to a communication port using a communication medium like cables or even wireless communication.
List four factors to be considered when purchasing an operating system. (2mks)
How does an operating system manage computer memory (2mks)
A school has been advised to employ a database administrator. State three responsibilities of this personnel in the school.
(b) Explain two ways in which computers can be used in the transport industry.
(c) Mary was advised to partition a hard disk for her computer. Explain two reasons that may have necessitated this. (d) Explain a reason for conducting each of the following studies in systems development: (i) Schedule feasibility; (ii) Technical feasibility.
RESPONSES
a) Possible responsibilities of a database admin in a school
The C directory of a computer has folders named Form 1, Form 2,Form 3 and Form 4. Each class has students' folders named according to their admission number. The students created their own folder for subjects they are studying based on the table shown below:
(a) A form four student intends to create a folder named proj to store project documents.
State the path for the project folder.
(i) work is not lost in case the hard disk fails;
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