Jhs 1,2 & 3 ICT Quiz On OS
.
- 1.
Memory
- A.
Is a device that performs a sequence of operations specified by instructions in memory.
- B.
Is the device where information is stored
- C.
Is a sequence of instructions
- D.
Is typically characterized by interactive processing and time-slicing of the CPU's time to allow quick response to each user.
Correct Answer
B. Is the device where information is storedExplanation
Memory is a device where information is stored. It is a storage component of a computer system that holds data, instructions, and programs that are currently being used or will be used by the CPU. Memory allows the computer to store and retrieve data quickly, making it an essential component for the functioning of a computer system.Rate this question:
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- 2.
The FIFO algorithm
- A.
Executes first the job that last entered the queue
- B.
executes first the job that first entered the queue
- C.
execute first the job that has been in the queue the longest
- D.
Executes first the job with the least processor needs
Correct Answer
B. executes first the job that first entered the queueExplanation
The correct answer is "executes first the job that first entered the queue". The FIFO algorithm stands for "First In, First Out", which means that the job that entered the queue first will be executed first. This algorithm follows a simple rule of processing jobs in the order they arrive, without considering any other factors such as priority or processor needs.Rate this question:
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- 3.
What is the name given to the organized collection of software that controls the overall operation of a computer?
- A.
Working system
- B.
Peripheral system
- C.
Operating system
- D.
Controlling system
Correct Answer
C. Operating systemExplanation
An operating system is the organized collection of software that controls the overall operation of a computer. It manages the computer's hardware and software resources, provides a user interface, and allows applications to run on the computer. The operating system is responsible for tasks such as memory management, file system management, process management, and device management. It acts as an intermediary between the user and the computer hardware, ensuring that all the different components of the computer work together smoothly.Rate this question:
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- 4.
While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?
- A.
DISKCOPY
- B.
COPY
- C.
RENAME
- D.
FORMAT
Correct Answer
B. COPYExplanation
The correct answer is COPY. The COPY command in MS-DOS is used to transfer files from one disk to another. It allows users to copy files and directories from one location to another, including between different disks. This command is useful for backing up files, creating duplicates, or simply moving files to a different disk for organization or storage purposes.Rate this question:
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- 5.
Bug means
- A.
A logical error in a program
- B.
A difficult syntax error in a program
- C.
Documenting programs using an efficient documentation tool
- D.
All of the above
Correct Answer
A. A logical error in a programExplanation
The correct answer is "A logical error in a program." This means that a bug refers to a mistake or flaw in the logic or reasoning of a program, which results in incorrect or unexpected behavior. It is different from a syntax error, which is a mistake in the code structure or syntax. The other options, documenting programs using an efficient documentation tool and all of the above, are not accurate definitions of a bug.Rate this question:
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- 6.
An algorithm is best described as
- A.
A computer language
- B.
A step by step procedure for solving a problem
- C.
A branch of mathematics
- D.
All of the above
Correct Answer
B. A step by step procedure for solving a problemExplanation
An algorithm is best described as a step-by-step procedure for solving a problem. It is a set of instructions or rules that guide the computer in performing a specific task. Algorithms can be written in various programming languages, but they are not limited to a specific computer language. Additionally, while algorithms involve mathematical concepts and principles, they are not solely a branch of mathematics. Therefore, the correct answer is "A step by step procedure for solving a problem."Rate this question:
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- 7.
Trojan-Horse programs
- A.
Are legitimate programs that allow unauthorized access
- B.
Do not usually work
- C.
Are hidden programs that do not show up on the system
- D.
usually are immediately discovered
Correct Answer
A. Are legitimate programs that allow unauthorized accessExplanation
Trojan-Horse programs are legitimate programs that appear harmless but actually allow unauthorized access to a system. They deceive users by disguising themselves as harmless software, tricking them into downloading or installing them. Once installed, these programs can give hackers remote access to the system, enabling them to steal sensitive information, control the system, or carry out malicious activities without the user's knowledge. These programs are a significant threat to cybersecurity as they exploit users' trust and can cause significant damage if not detected and removed.Rate this question:
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- 8.
When did IBM release the first version of disk operating system DOS version 1.0?
- A.
1981
- B.
1982
- C.
1983
- D.
1984
Correct Answer
A. 1981Explanation
IBM released the first version of disk operating system DOS version 1.0 in 1981.Rate this question:
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- 9.
Which of the following is false about disk when compared to main memory?
- A.
non-volatile
- B.
Longer storage capacity
- C.
lower price per bit
- D.
Faster
Correct Answer
A. non-volatileExplanation
The statement "non-volatile" is false when comparing disk to main memory. Disk is a non-volatile storage medium, meaning that it retains data even when power is lost. In contrast, main memory (RAM) is a volatile storage medium, meaning that it loses data when power is lost.Rate this question:
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- 10.
Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because
- A.
They are memory resident
- B.
They are initially stored on disk
- C.
They are available on magnetic tapes
- D.
They are partly in primary memory and partly on disk
Correct Answer
B. They are initially stored on diskExplanation
Microcomputer operating systems like Apple DOS, MS DOS, and PC DOS are called disk operating systems because they are initially stored on disk. This means that when the computer starts up, the operating system is loaded from the disk into the computer's memory. Once loaded, the operating system can then manage the computer's hardware and software, allowing the user to interact with the system and run various programs. Storing the operating system on disk allows for easy installation and updates, as well as efficient use of memory resources.Rate this question:
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Mar 21, 2023Quiz Edited by
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Apr 02, 2020Quiz Created by
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