WAEC SSCE - Computer Studies - 2024 (Essay)

Détails de la réponse

a(i) Data cable is a type of cable used to transmit data between devices such as computers, servers and peripherals.
(i) I. coaxial cables II. Fibre optic cables III. Twisted pair cable
(iii) A higher bus speed allows for faster data transfer between the processor and the RAM, lower latency and higher throughput allowing more data to be transmitted simultaneously and at faster speed.

b(i) Register: This is a high-speed temporary storage device built into a computer's processor that temporarily holds data being processed or converted.
ii) Address: This is a unique location or identifier where data is stored or retrieved. They serve as pointers to access and manipulate data during conversion.
 

Détails de la réponse

(i) File: This is a collection of related data (records) stored together on a computer.
(ii) Record: This is a single entry or row in a file, containing a set of related data. It is the collection of fields that describes a specific entity.
(ii) Field: This is a single piece of data within a record representing a specific attribute or characteristic. It is a column in a spreadsheet.

b(i) Other fields that may be included in student's record are: I. Student ID II. Date of birth II. Gender IV. Email V. Phone number VI. Parent/Guardian Name VII. Class
(ii) Steps involved in editing the field of student's record are:
I. Search for the student's record using a unique identifier such as the student ID.
II. Identify the specific field to be edited and select it.
II. Make your adjustments and saved changes made to the record.

Détails de la réponse

a(i)Sign in: This means to enter a username, password or other authentication details to access a website, application or online service, allowing the user to access their account, personalized content and features.
(ii) Search engine: This is a website or program that enables people to find information online by searching for keywords or phrases. Examples include Google, Bing, Yahoo.

b(i)I. Figure 1: Random access method
II. Figure 2: Sequential access method.

(i) I. Figure 1:
Advantage: Records can be accessed directly regardless of physical location making it ideal for fast data retrieval.
Disadvantage: Complex indexing system required to manage record locations

II. Figure 2:
Advantage:
(i) Straightforward to implement as records are stored and accessed linearly.
(ii) Less prone to data corruption.
(ii) Efficient for large files.
Disadvantage:
Show data retrieval most especially if the desired record is located far into the sequence.