Q#1: ——– command gives a snapshot of the current processes.
(A) ps
(B) top
(C) who
(D) ls
Answer: (A) ps
Q#2: ————–command to resume the execution of a suspended job in the foreground.
(A) fg
(B) bg
(C) jobs
(D) kill
Answer: (A) fg
Q#3: __________ scheduler selects the process from the job pool and put them in main memory.
(A) Long term
(B) Short term
(C) Medium term
(D) Swapper
Answer: (A) Long term
Q#4: Taking the CPU from one process and giving the CPU to another process is termed as
(A) Context Switching
(B) Dispatching
(C) Swapping
(D) Tracking
Answer: (A) Context Switching
Q#5: Command-line interpreter is also called __________ in some operating systems.
(A) Kernel
(B) Shell
(C) Signal
(D) API
Answer: (B) Shell
Q#6: The time it takes for the dispatcher to stop one process and start another running is known as
(A) Dispatch latency
(B) Scheduling
(C) Context switching
(D) None of the given options
Answer: (A) Dispatch latency
Q#7: The scheduling of _____________ are done by the operating system.
(A) Kernel threads
(B) User level threads
(C) Both Kernel and User Level thread
(D) None of the given options
Answer: (A) Kernel threads
Q#8: Real time Systems that control scientific experiments, medical imaging systems, industrial control systems and certain display systems are examples of:
(A) UNIX
(B) Windows
(C) Embedded Systems
(D) Batch Systems
Answer: (C) Embedded Systems
Q#9: The ___________ has a hierarchical file system structure.
(A) UNIX
(B) DOS
(C) Windows 95
(D) Linux Mint
Answer: (A) UNIX
Q#10: The ___________ are used for communication between related or unrelated processes on the same system or unrelated processes on different systems.
(A) Pipes
(B) Message Queues
(C) BSD Sockets
(D) Semaphores
Answer: (C) BSD Sockets
Q#11: The basic purpose of ________________ is to help the users to utilize the hardware resources for completing different tasks in a simplified manner.
(A) Operating system
(B) Application software
(C) All Software
(D) All of the given
Answer: (A) Operating system
Q#12: OS helps manages the following except
(A) Application software
(B) Bus speed of the system
(C) Memory
(D) Virtual memory
Answer: (B) Bus speed of the system
Q#13: A solution to the critical section problem must satisfy the following requirements:
(A) Progress
(B) Mutual exclusion
(C) Bounded Waiting
(D) All of these
Answer: (D) All of these
Q#14: The critical section problem can be solved by the following except
(A) Software based solution
(B) Firmware based solution
(C) Operating system based solution
(D) Hardware based solution
Answer: (B) Firmware based solution
Q#15: The process of holding at least one resource and waiting to acquire additional resources that are currently being held by other processes is known as________.
(A) Hold and wait
(B) Deadlock
(C) Starvation
(D) Mutual exclusion
Answer: (A) Hold and wait