Computer Science

The Brain virus, considered the first computer virus for MS-DOS, was created in 1986 by two brothers, Basit and Amjad Farooq Alvi, from Pakistan.

USB stands for 'Universal Serial Bus,' which is a standard for cables, connectors, and protocols used for connection, communication, and power supply between computers and electronic devices.

The first page of a website is commonly referred to as the 'Homepage.' It is the main entry point for visitors and typically contains links to other sections of the website.

The chief component of first generation computers was vacuum tubes and valves, which were used for circuitry and memory. Transistors and integrated circuits were introduced in later generations.

HTML stands for Hyper Text Markup Language, which is the standard language used to create web pages. The other options do not accurately represent what HTML stands for.

A CPU (Central Processing Unit) is a physical component of a computer system, making it hardware. It is not software, a program, or an output unit.

A nibble is a unit of digital information that consists of 4 bits. Therefore, 1 nibble equals 4 bits.

The term 'Gigabyte' has two common definitions: In the decimal (SI) system, 1 Gigabyte (GB) equals 1,000 Megabytes (MB). In the binary system, often used in computing memory contexts, 1 Gigabyte equals 1,024 Megabytes. The question's answer 'D' (1024 megabytes) is correct under the binary system, which is the standard used in many computing contexts for data storage units. Other options are incorrect: A (1024 bits) is far too small, B (1032 megabytes) is incorrect, and C (1024 kilobytes) is incorrect as 1 GB = 1024 MB, not KB.

MS Word (Microsoft Word) is a word processing software developed by Microsoft. It is not simply 'A Word', a spreadsheet, or an operating system. None of the options A, B, or C correctly describe MS Word, so 'None of These' is the correct choice. MS Word allows users to create, edit, format, and print text documents and is widely used worldwide as a word processor.

Pressing the Escape key is the standard way to stop or exit a slide show in most presentation software, such as Microsoft PowerPoint.

ASCII stands for 'American Standard Code for Information Interchange.' It is a character encoding standard used for representing text in computers and electronic devices.

Among the options given, a terabyte (TB) is the largest unit of memory. It is larger than a gigabyte (GB), megabyte (MB), and kilobyte (KB).

SMTP (Simple Mail Transfer Protocol) is the standard protocol used to transfer email messages between servers and provide email facility among different hosts.

ALU stands for Arithmetic Logic Unit, which is a digital circuit used to perform arithmetic and logic operations in computers.

Outlook Express is an email client program specifically designed for sending, receiving, and managing email messages.

Many email services block executable (.exe) files as attachments for security reasons, as they can contain malicious software. Other common file types like .doc, .jpg, and .pdf are usually allowed.

DHCP (Dynamic Host Configuration Protocol) is the protocol responsible for automatically assigning IP addresses to devices on a network, including clients connected to the internet.

A patch is a piece of software designed to update, fix, or improve a computer program, including fixing security vulnerabilities and other bugs. Patches are often made available for free on the internet by software vendors.

Executable files (.exe) are often blocked or restricted by email services because they can contain viruses or malicious software that may harm the recipient's system. Other file types like images or documents are generally safe to send via email.

A patch is a piece of software designed to update, fix, or improve a computer program, including fixing bugs. Patches are often available for free download from the internet.

Outlook Express is an email client developed by Microsoft that was commonly used in older versions of Windows for sending, receiving, and managing emails. It is specifically designed for email communication, unlike general-purpose software.

DHCP (Dynamic Host Configuration Protocol) is responsible for automatically assigning IP addresses and other network configuration details to devices on a network. This allows devices to communicate without manual IP configuration.

A bit is the smallest unit of memory or data in a computer, representing a single binary value of 0 or 1.

MS Excel is a widely used spreadsheet software that allows users to organize, analyze, and store data in tabular form. The other options are not spreadsheet software.

The Central Processing Unit (CPU) is often referred to as the 'heart' of a computer system because it performs all the processing and controls the operations of the computer.