2024 WAEC Computer Studies (OBJ/ESSAY) Questions and Answers

2024 WAEC Computer Studies (OBJ) Answers:

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1-10: DBCACBBDBA
11-20: ADBDDBBDAA
21-30: DCCADBDBBD
31-40: ADABACDBDB
41-50: BCCBACCDCB

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2024 WAEC Computer Studies (ESSAY) Answers:

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(1a)

(i) Sign in: This is the process of logging into a system or service using a username and password or other credentials to access personalized content or features. It allows users to access their accounts, settings, and preferences.

(ii) Search Engine: A search engine is a web-based tool that allows users to search for information on the internet by entering keywords or queries. It retrieves relevant results from its index of websites and web pages.

(1bi)

(i) Figure 1: Random File Access Method
(ii) Figure 2: Sequential File Access Method

(1bii)

(i) FIGURE 1: Random File Access Method

Advantages:

• Fast access to any record
• Direct access to data
• Efficient for reading and writing large amounts of data
• Suitable for large databases
• Supports random and sequential access operations

Disadvantages:

• Inefficient for large data sets
• Prone to data corruption
• Limited portability between systems
• Difficult to manage complex data structures
• Limited built-in search capabilities

(ii) FIGURE 2: Sequential File Access Method

Advantages:

• Simple to implement
• Cost-effective
• Suitable for large amounts of data
• Easy to maintain
• Can be read sequentially

Disadvantages:

• Slow access speed
• Inefficient for frequent random access
• Limited concurrent access
• Difficulty in updating and inserting data
• Susceptible to data corruption

(2ai)

Data Cable: A type of cable used to transfer data between devices like computers, smartphones, printers, and other peripherals.

(2aii)

Examples of data cables include:

• USB (Universal Serial Bus) cable
• HDMI (High-Definition Multimedia Interface) cable

(2aiii)

Bus Speed: This refers to the speed at which data is transferred within a computer system. A faster bus speed enables quicker data transfer between components, improving system performance, while a slower bus speed can cause delays and reduce overall performance.

(2bi)

Register: A small, high-speed storage area within the CPU (Central Processing Unit) that stores and manipulates data.

(2bii)

Address: A unique identifier assigned to a specific memory location within a computer’s memory.

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NUMBER 3

(3ai)

File: In computing, a file refers to a collection of data or information stored under a specific name on a storage device.

(3aii)

Record: A record is a collection of related fields treated as a single unit of information. In databases, it represents a single entry containing multiple pieces of information about one entity.

(3aiii)

Field: A field is a single piece of information or a basic element of data storage that has a specific meaning. Fields make up records, with each field typically holding one piece of relevant information.

(3bi)

Examples of fields in a student’s record include:
(i) The student’s ID number
(ii) Date of birth
(iii) Emergency contact information

(3bii)

Editing a Field in a Student’s Record:
To edit a field in a student’s record, open the database application and navigate to the desired record. Locate the field that needs editing, enter the new information, and save the changes to update the record.

(3biii)

Examples of database software include:
(i) Microsoft Access
(ii) MySQL

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