Computer Science and Engineering MCQs - Shahnoor Nasir

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12/05/2024

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12/05/2024

🇵🇰 A byte is a unit of digital information that consists of 8 bits. It is commonly used to represent a single character, such as a letter, in computer systems. The other options mentioned, such as zip drive, DVD drive, and pixels, are not specifically related to the definition of a byte.

12/05/2024

🇵🇰 A USB flash drive is a small, portable, and solid-state storage device that can be easily plugged into a computer's USB port. It allows for the reading and writing of data, making it a convenient tool for transferring files between different devices. Unlike DVDs, CDs, and floppy disks, which require specific drives to read and write data, a USB flash drive can be used on any computer with a USB port, making it highly versatile and widely used for data storage and transfer purposes

12/05/2024

🇵🇰 The motherboard is a circuit board that is located inside the system unit of a computer. It houses important electronic components such as the computer memory, power supply, processor, and other vital parts. The motherboard acts as a central hub, connecting all the different components of the computer and allowing them to communicate with each other.

12/05/2024

🇵🇰 Resolution refers to the number of pixels in an image displayed on a screen. The higher the resolution, the more pixels there are, resulting in a clearer and more detailed image. This means that a higher resolution display will have sharper images and text compared to a lower resolution display. Therefore, resolution plays a crucial role in determining the clarity and quality of an image on a screen.

12/05/2024

🇵🇰 ROM is a type of permanent memory that stores the instructions for the computer to load its operating system and programs. Unlike RAM, ROM cannot be modified or erased by normal computer operations. It contains firmware that is pre-programmed during manufacturing and retains its data even when the computer is powered off.

12/05/2024

🇵🇰 A scanner is a device that converts text or graphics from a printed page into code that a computer can process. It does this by using optical character recognition (OCR) technology to scan the printed page and convert it into digital information that can be understood by the computer. Scanners are commonly used for tasks such as scanning documents, photos, or artwork and converting them into digital files that can be edited, stored, or shared electronically. Unlike printers, which produce hard copies of digital files, scanners take physical copies and convert them into digital format. Therefore, the correct answer is scanner.

12/05/2024

🇵🇰 A router is an electronic device that connects multiple networks and controls the flow of information between them. It receives data packets from one network and determines the most efficient path for them to reach their destination on another network. Routers use routing tables and protocols to make these decisions. They play a crucial role in directing network traffic and ensuring efficient communication between different networks.

12/05/2024

🇵🇰 A modem is a device that allows computers to communicate by converting data in bytes to sounds or other media formats in order to send data over a network. It then converts the received data back to bytes for the computer to process. A modem is essential for connecting to the internet or other networks, as it facilitates the transmission and reception of data between devices.

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