Computer Competency Quiz: MCQ!

The correct answer is "World wide web". "www" is an abbreviation for "World wide web", which is a system of interconnected documents and other resources, linked by hyperlinks and URLs. It is used to access and navigate the internet.

A computer allows you to type documents and send emails, surf the internet, and store and retrieve data. It provides the ability to create and edit documents, communicate through email, browse websites, access online resources, and save files for future use. By selecting "All of the above" as the answer, it indicates that a computer enables all these activities, making it a versatile tool for various tasks and purposes.

A printer is not a basic part of a desktop computer because it is an external device used for producing hard copies of documents. While a mouse, keyboard, and monitor are essential components for inputting and outputting information, a printer is not necessary for the basic functioning of a computer system.

A network allows multiple computers to connect and communicate with each other, enabling them to share resources such as an Internet connection and files. This means that users connected to the network can access the Internet and share files with other computers on the same network. Therefore, the given statement is true.

Hardware refers to the physical components or parts of a computer that can be touched, such as the motherboard, processor, memory, hard drive, keyboard, mouse, monitor, and so on. It is the tangible part of a computer system that enables it to function and perform tasks. Firmware refers to the software that is permanently stored in a computer's hardware, while diskware is not a commonly used term. Software, on the other hand, refers to the programs, applications, and operating systems that run on a computer.

When opening an email attachment, it is always good practice to scan it with an Anti-virus software prior to opening. This is important because email attachments can contain malicious files or viruses that can harm your computer or compromise your data. Scanning the attachment with an Anti-virus software helps to detect and remove any potential threats, ensuring the safety of your system. Simply saving it to your hard drive or a flash drive without scanning it first can still expose your computer to potential risks. Scanning with Microsoft Word editor is not necessary as it is not designed to detect viruses.

The correct answer is "Brain of the computer" because the Central Processing Unit (CPU) is responsible for executing instructions and performing calculations in a computer. It acts as the brain of the computer by controlling and coordinating all the operations of the system, including processing data, running programs, and managing hardware resources. Without a CPU, a computer would not be able to function and perform tasks.

The arrow keys move the computer's cursor across the screen and do not change any of the data on the screen. The arrow keys are used for navigation purposes and do not have any effect on the content displayed on the screen. They simply allow the user to move the cursor to different positions within the text or document without making any changes to the data itself.

The organization name ".org" stands for organization network (often non-profit). This means that websites with a .org domain are typically associated with non-profit organizations, charities, or other similar entities. Unlike commercial websites (.com), government websites (.gov), or military websites, .org websites are usually focused on promoting a cause, providing information, or advocating for a specific issue rather than generating profit.

Anti-virus software is a program that protects your email, files, and downloads attached to software. It scans and detects potential threats such as viruses, malware, and spyware, preventing them from infecting your system. It also provides real-time protection by constantly monitoring your computer for any suspicious activity. By regularly updating its virus definitions, it can identify and remove the latest threats. Overall, anti-virus software is essential for maintaining the security and integrity of your computer and ensuring the safety of your personal information.

The correct answer is "Central Processing Unit" (CPU). The CPU is the primary component of a computer that carries out instructions of a computer program by performing basic arithmetic, logical, control, and input/output (I/O) operations. It is often referred to as the "brain" of the computer, as it performs most of the processing inside a computer system.

Both a mouse and a keyboard are typical input devices for a computer. A mouse is used to move the cursor on the screen and select items, while a keyboard is used to input text and commands. Therefore, the correct answer is "Both 'A' and 'B' above" as both the mouse and keyboard are commonly used input devices for computers.

ROM stands for Read Only Memory. It is a type of computer memory that stores data permanently and cannot be modified or erased. The data in ROM is written during manufacturing and remains intact even when the computer is turned off. It is used to store firmware, bootloader, and other essential instructions that are required for the computer to start up. Unlike RAM (Random Access Memory), ROM is non-volatile, meaning it retains its data even without power.

The top-level organization name ".com" represents a company or business. This is because the ".com" domain extension is primarily used by commercial entities and businesses for their website addresses. It is the most common and widely recognized domain extension for businesses on the internet.

A computer without software would be like a home entertainment system without any tapes, CDs, or movies. Software refers to the programs and applications that run on a computer and enable it to perform various tasks. Without software, a computer would not be able to carry out any specific functions or tasks, just like a home entertainment system would be useless without any media to play. Therefore, software is essential for the proper functioning and usability of a computer.

When composing and sending an email message, CC stands for Carbon Copy. This means that the sender of the email wants to send a copy of the email to another recipient or recipients, in addition to the main recipient. The main recipient can see who else received the email as a carbon copy. The purpose of CC is to keep others informed or involved in the conversation, even though they are not the primary recipient.

The delete key erases characters to the right of the insertion point, meaning it removes any characters that come after the cursor. On the other hand, the backspace key erases characters to the left of the insertion point, meaning it removes any characters that come before the cursor.

RAM, or random-access memory, is a type of computer memory that is used for temporary storage of data that is actively being used or processed by the computer's CPU. It is considered short-term memory because its contents are volatile and are lost when the computer is powered off or restarted. RAM allows for quick access and retrieval of data, which is essential for the efficient operation of a computer system.

A megabyte is a unit of digital information that is equal to 1,048,576 bytes. In terms of characters, it can be estimated that each character takes up 1 byte of storage. Therefore, a megabyte is approximately equal to 1,048,576 characters.

Microsoft Windows is an example of both a software program and an operating system. As a software program, it consists of a collection of programs, data, and instructions that tell the computer how to perform specific tasks. As an operating system, it manages computer hardware and software resources, provides a user interface, and allows users to run other software applications. Therefore, the correct answer is both "B" and "C" above.

A domain name is a unique address that identifies a website on the internet. In this case, "yahoo" is given as an example of a domain name. Yahoo is a well-known internet company that provides various services such as search engine, email, and news. It is a recognizable and easily identifiable domain name that users can type in their web browser to access Yahoo's website and services.