CS604 Quiz 1 Set 4

Q1. Which of the following two operations are provided by the IPC facility?

1. Delete & Receive message
2. Receive & Send message
3. Write & Delete message
4. Send & Delete message

Correct answer: Receive & Send message

Q2. A program in execution is called a _______________.

1. Process
2. Command
3. Software
4. Compiler

Correct answer: Process

Q3. Ali is an operating system designer. One user requirement regarding OS is easy to debug and modify. In your opinion which one of the following OS structure Ali needs to follow?

1. Simple OS Approach
2. Micro kernels
3. Layered Approach
4. Virtual Machines

Correct answer: Micro kernels

Q4. Which is not considered a role of an operating system?

1. Synchronization of cooperating processes
2. Program execution
3. Protection of a user’s files and directories
4. Memory allocation and de-allocation of a process

Correct answer: Protection of a user’s files and directories

Q5. Linux redirection features can be used to ____________ and attach other files with them for a single execution of a command.

1. detach the default files from stdin, stdout, and

stderr

B. detach the default files from stdin and stderr C. detach the default files from stdin and stdout D. detach the default files from stdout, and stderr

Q6. The ________ system call suspends the calling process until one of the immediate children terminate.

1. Interrupt
2. Wait
3. Trap
4. Signal

Correct answer: Wait

Q7. Which of the following is not a major advantage of multi-programming system is

1. Jobs can be completed quickly
2. CPU utilization can be increases
3. If more processes exist, the rest must wait until the CPU is free and can be rescheduled
4. More than one jobs can be processed at a given time

Correct answer: If more processes exist, the rest must wait until the CPU is free and can be rescheduled

Q8. A Process ‘A’ that has finished working but its parent process has also finished its execution. In this state the process ‘A’ will be called as _____ process.

1. Child
2. Thread
3. Fork
4. Zombie

Correct answer: Zombie

Q9. Which of the following is a correct command line for running in background?

1. cat code.c | grep print #
2. cat code.c | grep print
3. cat code.c | grep print &
4. cat code.c | grep print %

Correct answer: cat code.c | grep print &

Q10. A/an ----------- is software generated call caused by error, or when a user request for an operating system service.

1. System call
2. Trap
3. Interrupt
4. Signal

Correct answer: Trap