Basic Computer Exam Quiz: MCQ! Trivia

Explanation
RAM stands for Random Access Memory. It is a type of computer memory that allows data to be accessed randomly, meaning any byte of memory can be accessed without touching the preceding bytes. This makes it faster and more efficient compared to other types of memory like read-only memory (ROM) or write-only memory (WOM). RAM is used by the computer's operating system, software applications, and data that is currently being processed or used by the computer.

Explanation
The smallest unit of memory is a bit. A bit is a binary digit, representing either a 0 or a 1. It is the basic unit of information storage and processing in computers. A byte, on the other hand, is a group of 8 bits, and a gigabyte (GB) is a much larger unit of memory that is equivalent to 1,073,741,824 bytes. Therefore, the correct answer is bit.

Explanation
The shortcut key CTRL+X is used to cut the selected text. Cutting the text removes it from the current location and stores it in the clipboard, allowing the user to paste it elsewhere. CTRL+S is the shortcut key for saving a file, while CTRL+A is used to select all the text in a document. Therefore, the correct answer for the shortcut key to cut the text is CTRL+X.

Explanation
Epson is not a service provider because it is a multinational company that specializes in manufacturing and selling various electronic devices such as printers, scanners, projectors, and other imaging-related equipment. It does not provide any telecommunications or internet services like BSNL and Airtel, which are both well-known service providers in the telecommunications industry.

Explanation
The primary key is considered the basic key of a database because it uniquely identifies each record in a table. It ensures that each record has a unique identifier, which is essential for maintaining data integrity and allowing efficient data retrieval. The primary key is used to establish relationships between tables and enforce referential integrity.

Explanation
The correct answer is ELECTRONIC MAIL. Email stands for Electronic Mail, which refers to the transmission of messages and files over computer networks. It is a widely used method of communication that allows individuals to send and receive messages electronically.

Explanation
The correct answer is LOCAL AREA NETWORK. A LAN is a computer network that connects devices within a limited area such as a home, office, or building. It allows for the sharing of resources such as files, printers, and internet connections among connected devices. Unlike a WAN (Wide Area Network) that covers a larger geographical area, a LAN is typically confined to a smaller space. Therefore, the full form of LAN is Local Area Network.

Explanation
The correct answer is "SEND" because when we want to send an email, we need to press the "SEND" button to initiate the process of sending the email. The "COMPOSE" button is used to start writing a new email, and the "ATTACHMENT" button is used to add attachments to the email. However, to actually send the email, we need to press the "SEND" button.

Explanation
The correct answer is "ARITHMATIC AND LOGICAL FUNCTIONS". An Arithmetic Logic Unit (ALU) is a digital circuit that performs arithmetic and logical operations on input data. It is a fundamental component of the central processing unit (CPU) in a computer. The ALU can perform arithmetic operations such as addition, subtraction, multiplication, and division, as well as logical operations such as AND, OR, NOT, and XOR. Therefore, the statement "ALU performs only functions" is incorrect, as the ALU performs both arithmetic and logical functions.

Explanation
Mozilla Firefox is not a search engine. It is a web browser that allows users to access the internet and search for information using various search engines like Google or Yahoo. While Google and Yahoo are search engines that provide users with search results based on their queries, Mozilla Firefox is simply a tool that allows users to navigate the internet and access different websites.