Operating System - Study Mode

[#351] Which, of the following is not true about the description of a decision table?
Correct Answer

(B) A decision table is directly understood by the computer

Explanation

Solution: A decision table is directly understood by the computer is not true about the description of a decision table

[#352] Trojan-Horse programs
Correct Answer

(A) are legitimate programs that allow unauthorized access

Explanation

Solution: Trojan-Horse programs are legitimate programs that allow unauthorized access

[#353] When did IBM release the first version of disk operating system DOS version 1.0?
Correct Answer

(A) 1981

Explanation

Solution: In 1981 IBM release the first version of disk operating system DOS version 1.0.

[#354] Which of the following is false about disk when compared to main memory?
Correct Answer

(D) faster

Explanation

Solution: The kernel operations seem to be the fastest across all operating systems. The graphical interface is roughly on par or faster than other systems.

[#355] Producer consumer problem can be solved using
Correct Answer

(D) all of the above

Explanation

Solution: Producer consumer problem is a classical synchronization problem. We can solve this problem by using semaphores. A semaphore is an integer variable that can be accessed only through two standard operations: wait and signal.