Correct Answer: D. Control unit

Explanation

The Control Unit of the Central Processing Unit (CPU) coordinates other units and manages the computer resources. It directs the operation of the processor, and interacts with the other hardware components in the system to carry out the instructions of a program. It is responsible for fetching, decoding, and executing instructions from the memory unit and performing arithmetic and logical operations.

Correct Answer: A. Assembly language

Explanation

Assembly language is a low-level programming language that is specific to a particular computer architecture. It is more difficult to learn and use than high-level programming languages, but it offers more control over the hardware.

Correct Answer: C. Read

Explanation

In the CRUD acronym, R stands for 'Read'. CRUD stands for Create, Read, Update, and Delete. These are the four basic functions of persistent storage in databases.

Correct Answer: B. QWERTY

Correct Answer: B. monitor

Explanation

The monitor is an output device, not an input device. Input devices are used to input data into a computer system for processing. Examples include a keyboard, mouse, joystick, etc. On the other hand, output devices are used to display or output the processed data. Examples include a monitor, printer, etc.

Correct Answer: B. it has a strong security system

Explanation

A peer-to-peer (P2P) network is a decentralized network where each computer (peer) acts as both a client and a server. This means that there are no dedicated servers and no hierarchy among the computers. However, P2P networks are generally not known for having a strong security system. This is because each peer has equal access to the resources, which can lead to potential security risks.

Correct Answer: C. COBOL

Correct Answer: A. updation

Explanation

When records are given a new value, it is called 'updation'. This is a process in database management where an existing record is modified with new data. 'Insertion' is adding a new record, 'deletion' is removing a record, and 'retrieval' is fetching data from the database.

Correct Answer: A. Cold booting

Explanation

Cold booting is when you start a computer from a powered-down, or off, state. This is often referred to as a system restart or a system reset. Warm booting, on the other hand, is restarting the computer while it's powered on. Rebooting and soft booting are general terms for restarting a computer and can refer to either cold or warm booting.

Correct Answer: A. Memory unit

Explanation

The memory unit of the CPU stores instructions, data, and intermediate results. The control unit controls the operation of the CPU and hence the computer. The arithmetic section performs arithmetic operations like addition, subtraction, multiplication, and division. The logic section performs logical operations like comparison of values.