1. User programs interact with I/O devices through:
B) Operating System
Correct Answer: Operating System
Explanation : User programs interact with I/O devices through Operating System.
2. With what command can you see your user name?
Correct Answer: whoami
Explanation : With whoami command can you see your user name in Unix, Linux and Windows Operating System.
3. PATH is an environment variable. State True or False
Correct Answer: True
Explanation : PATH is an environment variable on Unix-like operating systems, DOS, OS/2, and Microsoft Windows, specifying a set of directories where executable programs are located.
4. What is an ISR?
A) Information Service Routine
B) Interrupt Service Request
C) Information Service Request
D) Interrupt Service Routine
Correct Answer: Interrupt Service Routine
Explanation : ISR stands for Interrupt Service Routine.