Computer studies analysis of questions and answers

A school has been advised to employ a database administrator. State three responsibilities of this personnel in the school.

15/1/2021

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

Carrying out school database backups.
Recovering of lost school data incase of system failure.
Ensuring the security and integrity of the school system.
Adding new users to the school system and managing the user’s accounts.
Designing and developing database application for the school.
Updating or maintaining database for the school.

b) Ways in which computers can be used in a transport industry.

Use of GPS to track vehicles, flights etc.
Bookings to different destinations can be done through the use of computers ( online booking).
The computers can also be used to reduce the speed of vehicles and bring sanity in the industry.
Managing human resource involved in the industry.

c) Reasons for partitioning hard disk

For security purposes, incase one partition fails the second partition remains functional.
If she requires backup copies to be stored in the same hard disk.
If she intends to install more than one operating system.

d) (I Schedule feasibility

To determine if the proposed solution can be developed within the required time.

(ii) Technical feasibility

To determine if the system can be supported by the available technology.

ANALYSIS OF KCSE COMPUTER STUDIES TOPICAL QUESTIONS & REVISION KITS

A school has been advised to employ a database administrator. State three responsibilities of this personnel in the school.

Distinguish between a microwave transmission and a radio transmission.

Describe three arithmetic errors that may occur during computerised data processing.

State two qualities of a good pseudocode.

(b) With the aid of flowchart diagrams, describe each of the following programme control structures: (i) sequence (ii) selection

​(c) Draw a programme flowchart that would accept three numbers and find their sum. If the sum is greater than 200. It adds 30 to the sum, otherwise subtracts 20 from the sum. The programme should then display the results.

Explain three ways in which an operating system provides data security in a computer system

Explain two health issues that could arise from the use of unsuitable computer desk.

Explain two health issues that could arise from the use of unsuitable computer desk.

With the aid of a diagram, describe the Hierarchical Database Model.

Figure 1 shows a flowchart. Use it to answer the questions that follow.

Explain two ways in which the use of internet could make reporting of corruption easier

List two techniques of acquiring electronic images to be used in a desktop publishing program.

State three functions of networking operating systems other than providing network security.

In the BCD number coding scheme, letter A is represented by 110001 and letter B by 110010. Determine how the word CAB is coded in BCD.

List four web programming languages.

State four ways in which a programmer can make program code easy to fol1ow

​Draw a program flowchart to represent the following pseudocode.

Describe the octal number system.

(i) 111.1012 to decimal;

(ii) 14.687510 to binary.

(i) signed magnitude representation;

(ii) two’s complement.

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(b) With the aid of flowchart diagrams, describe each of the following programme control structures:
(i) sequence
(ii) selection

(c) Draw a programme flowchart that would accept three numbers and find their sum. If the sum is greater than 200. It adds 30 to the sum, otherwise subtracts 20 from the sum. The programme should then display the results.

Draw a program flowchart to represent the following pseudocode.

(i) 111.101₂ to decimal;

(ii) 14.6875₁₀ to binary.