Computer Knowledge

Computer Fundamentals and System Concepts

2,421 Questions

Computer fundamentals and system concepts questions cover core hardware components, operating systems, and historical computer milestones. Topics include the kernel, central processing unit, and basic computing terminology. These foundational questions are strictly essential for scoring well in computer knowledge sections.

Central processing unitComputer operating systemsSupercomputer milestonesSystem registry functionsKernel operationsAndroid applications

Computer Fundamentals and System Concepts Questions

Multiple choice

What is the role of control unit in CPU?

  1. It is responsible for the communication among the input/output devices, obtains the instruction from memory and manage all the units of the computer.

  2. It does not store data.

  3. It is responsible for arithmetic operations in the computer.

  4. Only (1) and (2)

  5. (1), (2) and (3) all are true.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yes, all the there are correct.

Multiple choice

What is the correct C language expression for the following mathematical expression? Sin2x + Cos2x + Sin(ex + log10x)

  1. pow(sinx,2) + cos(2*x) + sin(exp(x) + log10(x))

  2. pow(sin,2x) + cos(2*x) + sin(exp(x) + log10(x))

  3. pow(sinx,2) + cos(2x) + sin(exp(x) + log10(x))

  4. pow(sinx,2) + cos(2*x) + sin(exp(x) + log10(x))
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

For sinx, cosx, ex and log10x , the functions are sin(x), cos(x), exp(x) and log10(x), respectively. Hence, the correct expression is pow(sinx,2) + cos (2*x) + sin(exp(x) + log10(x)).

Multiple choice

Which of the following best describes a distributed operating system?

  1. An operating system, which can share the network resources and communicate with each other.

  2. An interface used for computer components such as hard drives.

  3. A process that must respond to events within a certain period of time.

  4. An operating system in which user gives their jobs to the operator which then sorts the program according toh the priority and then executes them.

  5. An operating system in which multiple CPU's are used together to accomplish a task.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct as distributed operating system depends on networking for their functionality.

Multiple choice

Under the IT Act, which of the following are computers?

  1. Mobile phones and microwave ovens

  2. Computer printers and scanners

  3. Installed computer softwares and Automatic Teller Machines

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Under the IT Act, "computer" means any electronic, magnetic, optical or other high-speed data processing device or system which performs logical, arithmetic and memory functions by manipulation of electronic, magnetic or optical impulses, and includes all input, output, processing, storage, computer software, or communication facilities which are connected or related to a computer system or a computer network.

Multiple choice

What type of computer program is a Trojan horse?

  1. Operating system

  2. System software

  3. Firewall

  4. Data base

  5. Malware
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

A Trojan horse is a program in which malicious or harmful code is contained inside apparently harmless programming or data in such a way that it can get control and do its chosen form of damage, such as ruining the file allocation table on your hard disk. It is a malware.