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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
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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;
State the meaning of the term disk defragmentation as used in computers.
State the purpose of disk defragmentation.
State three functions of networking operating systems other than providing network security.10/1/2021 State three functions of networking operating systems other than providing network security.
(b) Explain three ways in which an operating system provides data security in a computer system.
(c) Explain three circumstances under which observation method may be preferred during data collection.
(a) Functions of network operating systems
A computer technician found it necessary to disable a firewall when working on a computer system. State two reasons that may have necessitated disabling of the firewall.
When firewall is disabled
List six file manipulation activities that may be carried out using an operating system.
File manipulation activities- creation of files/folders
A) Explain three features of a graphical user interface as used in computers. (6 marks)
B) State the function of each of the following computer keyboard keys:
(i) Caps Lock (1 mark)
(ii) Shift (1 mark) (iii) Home (1 mark)
(i) Function of Caps lock
- It’s a toggle key when ON, the characters typed are in uppercase when OFF, the characters typed are in lower case. (ii) Shift key - Used to enable uppercase letter to be printed when alphanumeric keys are pressed. - Used with other keys to modify behavior/function key. (iii) Home key - Used to take the cursor to the beginning of the line in a word processor. - Evidence of movement of the cursor. C) Using two complement notation, determine the value of the operation 2510 — 2910 (6 marks)
​State three factors to consider when selecting an operating system to install in a computer.7/1/2021 State three factors to consider when selecting an operating system to install in a computer. (3 marks)
 Give two differences between a Graphical User Interface (GUI) and a Commandline Interface.
A computer is idle but the hard disk light is blinking, indicating some activity. State two possible causes of this.
Explain the importance of disk partitioning.
Importance of disk partitioning.
Differentiate between pull-down menu and pop-up menu as used in Graphical User Interface (GUI) operating systems.
Difference between pull-down and pop-up menus
What is meant by disk defragmentation?
(b) State the purpose of disk defragmentation.
Distinguish between real-time operating system and distributed operating system. (3 marks)
 State three Ways in which an operating System Secures a Computer System.
Ways in which an OS secures computer system:
Computer network technicians prefer to use command line based operating system when configuring networks. State three reasons for the preference. (3 marks)
Reasons for the use of command — line interface OS
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