Computer Basics Exam Quiz

The keyboard is the primary device for entering information into the computer. It allows users to input text, numbers, and commands by pressing various keys. The term "key board" is likely a typo or misspelling of "keyboard," as both terms refer to the same device.

The correct answer is "Serial" because Universal Serial Bus (USB) is a standard interface used for connecting devices to a computer. The word "Serial" in the answer refers to the type of communication protocol used by USB, where data is transmitted one bit at a time.

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The correct answer for this question is "Processing." CPU stands for Central Processing Unit, which is the main component of a computer responsible for executing instructions and performing calculations. It is often referred to as the brain of the computer, as it carries out all the necessary computations and data processing tasks.

The CPU, or Central Processing Unit, is often referred to as the brain of the computer. It is responsible for executing instructions and performing calculations, making it a crucial component in the functioning of a computer. The CPU processes data and controls the other hardware components, allowing the computer to perform tasks and run programs. While the other options listed are important in their own right, none of them accurately describe the role and function of the CPU.

An electrical transformer regulates the electricity used by the computer. A transformer is a device that can increase or decrease the voltage of an electrical signal. In the context of a computer, a transformer is often used to adapt the incoming electrical power to the voltage levels required by the computer's components, ensuring a stable and appropriate power supply for the system to function correctly.

The BIOS (Basic Input/Output System) is firmware stored on a computer's motherboard. Its primary purpose is to control the interaction between the operating system and the computer's hardware. It initializes system components during the boot process, provides low-level hardware control, and facilitates the handover of control to the operating system once the system is fully initialized.

The main circuit board to which all of the other internal components are connected is called the motherboard. It is often referred to as the "spine" of the computer because it provides the central communication pathway for all the components to interact with each other. The motherboard houses the CPU, RAM, and other essential components, and it also provides expansion slots for additional devices. Without the motherboard, the computer would not be able to function properly as it acts as the central hub for all the internal connections and communication.

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. It is volatile memory, which means that its contents are lost when the power is turned off. RAM is used by the computer to store data that is currently being used by the CPU, allowing for faster data access compared to other types of memory.

The operating system is the basic software that allows the user to interact with the computer. It acts as an interface between the user and the computer hardware, enabling the user to perform various tasks and run applications. It manages system resources, controls hardware devices, and provides a platform for other software to run on. The operating system is often referred to as the language of a computer because it interprets and executes user commands and provides a means for communication between the user and the computer.

DSL stands for Digital Subscriber Line. This technology uses existing telephone lines to provide high-speed internet access to subscribers. By utilizing the existing infrastructure, DSL allows for faster transmission of digital data, such as internet traffic, without interfering with traditional telephone services. Therefore, the correct answer is "subscriber" as it refers to the individuals or businesses who subscribe to DSL services to access the internet.

The correct answer is "hard drive." A hard drive is a non-volatile storage device used for storing and retrieving digital information in a computer. It is a crucial component for storing the operating system, applications, and user data.

The correct answer is "Sound Card". A sound card is a hardware device that allows a computer to record and play audio. It converts analog sound signals into digital information that the computer can process, and then converts the digital information back into analog sound signals that can be output through speakers or headphones.

The performance of a hard disk can be measured in terms of its data rate, which refers to the speed at which data can be read from or written to the disk. It indicates how quickly data can be transferred to and from the disk. Another way to measure the performance of a hard disk is through its seek time, which is the time taken by the disk to locate and access a specific piece of data. Seek time is a measure of how quickly the disk's read/write heads can move to the desired location on the disk.

ROM / BIOS, removable drives, network / internet storage, and hard drive are all types of permanent storage areas. ROM / BIOS refers to read-only memory or basic input/output system, which contains firmware that is permanently stored and cannot be altered. Removable drives such as USB flash drives or external hard drives provide portable and permanent storage options. Network / internet storage allows users to store and access files remotely over a network or the internet. Hard drives are the primary storage devices found in computers and provide permanent storage for data and programs.