Computer Parts And Peripherals MCQ Quiz

Explanation
The correct answer is "monitor" because it is the device that displays words and graphics on the computer. The mouse is an input device used to navigate and interact with the computer, the CPU is the central processing unit responsible for executing instructions, and the printer is an output device used to produce hard copies of documents. However, none of these devices directly display words and graphics like a monitor does.

Explanation
Peripherals are additional devices connected to the computer that expand its functionality beyond the central processing unit (CPU). These devices can include input devices like keyboards and mice, output devices like monitors and printers, as well as storage devices, networking devices, and other accessories. They are not needed for the CPU to keep running, nor are they the programs we use, but rather they enhance the capabilities and usability of the computer system.

Explanation
A laptop has a track pad instead of a handheld mouse because a track pad is a built-in pointing device that allows users to control the cursor on the screen by moving their fingers across its surface. It serves the same purpose as a mouse, providing a way to navigate and interact with the laptop's interface without the need for an external device. The track pad is a convenient and space-saving solution for laptops, as it eliminates the need to carry a separate mouse and allows for easy and intuitive navigation.

Explanation
Some computers do indeed operate by touching the screen to select programs and files. This technology is known as touchscreen technology and is commonly found in smartphones, tablets, and some laptops. By touching the screen, users can interact with the device and perform various actions such as opening apps, navigating menus, and selecting files. This feature has become increasingly popular and is widely used in modern computing devices.

Explanation
The CPU, or Central Processing Unit, is not a peripheral device. It is the main component of a computer that performs most of the processing inside the computer. Peripheral devices, on the other hand, are external devices that connect to the computer, such as keyboards, mice, printers, and scanners.

Explanation
All of the options listed are actual uses of computers. Computers are commonly used for security systems, where they monitor and control access to buildings or networks. They are also used for earning a university degree, as many universities offer online courses and programs. Additionally, computers are frequently used for keeping records, such as student scores, where they can efficiently store and manage large amounts of data.

Explanation
A CPU (Central Processing Unit) is the main component of a computer that performs most of the processing inside the computer. It consists of multiple parts, including the Control Unit, which manages the execution of instructions, the CPU itself, which carries out the instructions, and the ALU (Arithmetic Logic Unit), which performs arithmetic and logical operations. Therefore, the correct answer is "All of the above" as it includes all the mentioned components that make up a CPU.

Explanation
Both the keyboard and mouse are examples of input devices. An input device is any hardware component that allows the user to input data or commands into a computer. The keyboard allows the user to input text and commands by pressing keys, while the mouse allows the user to move a cursor on the screen and select objects by clicking on them. Therefore, both the keyboard and mouse are examples of input devices. The monitor, on the other hand, is an output device as it displays the output or results of the computer's processing.

Explanation
RAM (Random Access Memory) is known as volatile memory because it is a type of computer memory that requires constant power to retain the stored data. When the power is turned off, the data stored in RAM is lost. This is in contrast to non-volatile memory, such as ROM (Read-Only Memory), which retains data even when the power is turned off. Floppy disks are a type of storage media and not a type of memory. Therefore, the correct answer is RAM.