Explanation

• The function of a web browser is to view and interact with web content.
• A web browser is software used to access and display websites on the Internet.
• It retrieves web pages from web servers and displays text, images, videos, and other content.
• Examples include Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari.
• Browsers use web technologies such as HTML, CSS, and JavaScript to display interactive web pages.

Last verified on 10-08-2026

Explanation

• Charles Babbage's computer was called the Analytical Engine.
• He was an English mathematician, inventor, and mechanical engineer.
• He designed the Analytical Engine, a general-purpose mechanical computer concept.
• Babbage worked on the Analytical Engine during the 19th century until his death in 1871.
• The Analytical Engine was designed to perform calculations and follow programmed instructions.
• Charles Babbage is widely known as the “Father of the Computer.”

Last verified on 10-08-2026

Explanation

• Mesh topology has the highest reliability.
• Because devices have multiple direct connections.
• If one connection fails, data can usually travel through another available path.

Additional information:

• Star topology depends heavily on its central hub or switch.
• Ring topology can be disrupted if a critical connection or device fails.

Last verified on 09-08-2026

Explanation

• The first or main page of a website is commonly called the Homepage.
• It usually provides an overview of the website and links to other important pages.
• The homepage is often the default or starting page visitors see when they visit a website.

Additional information:

• Webpage → A single page on a website
• Website → Collection of related webpages
• URL → Address of a webpage or website
• Web browser → Software used to access websites

Last verified on 09-08-2026

Explanation

• Malware means malicious software designed to damage, disrupt, steal information from, or gain unauthorized access to computer systems.
• Common types include viruses, worms, trojans, ransomware, spyware, and adware.

Additional information:

• Virus: Attaches itself to files and can spread when the infected file runs.
• Worm: Can spread automatically across networks without attaching to another file.
• Trojan: Pretends to be legitimate software but performs malicious actions.
• Ransomware: Encrypts or blocks access to data and demands payment.
• Spyware: Secretly collects information about a user or system.

Last verified on 09-08-2026

Explanation

• 1 billion bytes = 1 Gigabyte (GB).

Additional information:

• 1 GB = 1,000,000,000 bytes (10⁹ bytes).
• 1 MB = 1,000,000 bytes (10⁶ bytes).
• 1 TB = 1,000,000,000,000 bytes (10¹² bytes).

Last verified on 09-08-2026

Explanation

• GUI stands for Graphical User Interface.
• It is a type of user interface that allows users to interact with electronic devices using icons, windows, menus, and buttons instead of typing commands.
• The first GUI was developed at Xerox PARC in the early 1980s.

Additional information:

• CLI – Command Line Interface
• CUI – Character User Interface
• VUI – Voice User Interface
• NUI – Natural User Interface

Last verified on 03-07-2026

Explanation

• LAN is ideal for connecting computers in closely located buildings, such as within a campus or office block.
• LAN stands for Local Area Network.
• It offers high speed and cost-effective connectivity over short distances.

Last verified on 19-04-2026

Explanation

• Print Preview is important when taking a print because it shows how the document will look on the printed page.
• It helps check page layout, margins, text, and overall appearance before printing.
• Print Preview helps identify mistakes and avoid unnecessary printouts.

Additional information:

• Print Command is used to start the printing process.
• Page Setup is used to adjust paper size, margins, and page orientation.

Last verified on 09-08-2026

Explanation

• TCP/IP was developed in the 1970s through the pioneering work of Vint Cerf and Robert E. (Bob) Kahn.
• They are widely recognized as the “Fathers of the Internet”.
• TCP provides reliable, ordered delivery of data, while IP handles addressing and routing of packets.
• The foundational TCP/IP work was published in 1974.

Last verified on 09-08-2026