Explanation

• ROM is commonly used to store firmware in embedded systems.
• Firmware is permanent software stored in non-volatile memory.
• ROM retains data even when power is OFF.
• It is essential for device startup and basic control functions.

Last verified on 24-06-2026

Explanation

• Quick Sort is the fastest in the average case among the given options.
• It has an average time complexity of O(n log n).
• It uses a divide-and-conquer strategy to sort data efficiently.

Last verified on 23-06-2026

Explanation

• A single row(s) in a database table is called a record(s) or tuple(s).
• It represents a complete set of related data about one entity.
• Each record contains multiple fields (columns).
• Records store information about a single entity (e.g., one student).
• It is a basic unit of data storage in databases.

Additional information:

• In a database, columns are called Fields or Attributes.

Last verified on 12-04-2026

Explanation

• The Data Bus transfers actual data between CPU and memory.
• It carries information that is being processed or stored.
• It is a two-way communication path in most systems.

Additional information:

• Address Bus: Carries memory location (address)
• Control Bus: Carries control signals (read/write)
• System Bus: Combination of all three buses
• Direction: Mostly bidirectional for data transfer

Last verified on 22-06-2026

Explanation

• HTML (HyperText Markup Language) is used for web designing and creating the structure of web pages.
• It defines elements like headings, paragraphs, images, links, and tables on websites.
• HTML is the basic building block of the World Wide Web.
• It works with CSS and JavaScript to create interactive websites.

Additional information:

• Developed by: Tim Berners-Lee (1991)
• Standardized by: World Wide Web Consortium (W3C)

Last verified on 22-06-2026

Explanation

• Database normalization reduces data redundancy in a database.
• It organizes data into well-structured tables.
• It removes duplicate (repeated) data.
• It improves data consistency and efficiency.
• It helps in reducing data anomalies during operations.

Last verified on 08-06-2026

Explanation

• Communication between a keyboard and computer is simplex.
• It means data flows in one direction only — from keyboard to computer.
• The computer does not send data back to the keyboard during typing.

Additional information:

There are 3 main data transmission modes:

1. Simplex: Data flows in one direction only (e.g., keyboard to computer).
2. Half-Duplex: Data can flow both ways, but not at the same time (e.g., walkie-talkies).
3. Full-Duplex: Data flows both ways simultaneously (e.g., telephone conversations).

Last verified on 17-06-2026

Explanation

• The main purpose of header and footer is to display information like page numbers, titles, or dates on every page when a document is printed.
• They appear at the top (header) and bottom (footer) of each page.
• They help in organizing long documents in a professional way.
• Commonly used in reports, books, and assignments.

Last verified on 10-06-2026

Explanation

• Clip Art is a graphic solution.
• It is used in word processors to insert ready-made images.
• It helps enhance the visual appearance of documents.
• Users can easily add pictures without creating them manually.
• It is a built-in library of images and symbols.

Last verified on 10-06-2026

Explanation

• PowerPoint allows an unlimited number of slides in a presentation.
• There is no fixed or hard-coded slide limit in MS PowerPoint.
• The number of slides depends on system memory (RAM) and file size.
• Very large presentations may slow down performance.

Last verified on 08-06-2026