OS Quiz, MCQs, Online Test, Objective Type, Multiple Choice Questions - 3

Question: 11

We use this command to create a new file.

(A) DCOPY COM.N

(B) COPY CON

(C) DCOPY COM

(D) DCOPY COMN

Question: 12

What is the program in the operating system that does processor management?

(A) Job scheduler

(B) Traffic controller

(C) Process scheduler

(D) Dispatcher

Question: 13

Which of the following is/are file extension(s) in DOS?

(A) EXE

(B) COM

(C) BAT

(D) All of these

Question: 14

It refers to the process of managing various devices connected to the computer. So here “it” refers to

(A) Memory management

(B) File management

(C) Error management

(D) Device management

Question: 15

Multithreading on a multi CPU machine

(A) can increase or decrease the concurrency

(B) doesn’t affected the concurrency

(C) decreases concurrency

(D) increases concurrency