Question 1

A parent process calling system call will be suspended until children processes terminate.

Accepted Answer

A) wait 
B) fork 
C) exit 
D) exec 
A) wait 
B) fork 
C) exit 
D) exec A

Question 2

Which of the following are forms of malicious attack?

Accepted Answer

A) Theft of information 
B) Modification of data 
C) Wiping of information 
D) All of the mentioned 
A) Theft of information 
B) Modification of data 
C) Wiping of information 
D) All of the mentioned D

Question 3

In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the:

Accepted Answer

A) blocked state 
B) ready state 
C) suspended state 
D) terminated state 
A) blocked state 
B) ready state 
C) suspended state 
D) terminated state B

Question 4

What is the idea behind thread pools?

Accepted Answer

A) a number of threads are created at process startup and placed in a pool where they sit and wait for work 
B) when a process begins, a pool of threads is chosen from the many existing and each thread is allotted equal amount of work 
C) all threads in a pool distribute the task equally among themselves 
D) none of the mentioned 
A) a number of threads are created at process startup and placed in a pool where they sit and wait for work 
B) when a process begins, a pool of threads is chosen from the many existing and each thread is allotted equal amount of work 
C) all threads in a pool distribute the task equally among themselves 
D) none of the mentioned

Question 5

Mutual exclusion can be provided by the___________

Accepted Answer

A) mutex locks 
B) binary semaphores 
C) both mutex locks and binary 
D) none of the mentioned 
A) mutex locks 
B) binary semaphores 
C) both mutex locks and binary 
D) none of the mentioned

Question 6

Instead of starting a new thread for every task to execute concurrently, the task can be passed to a___________

Accepted Answer

A) process 
B) thread pool 
C) thread queue 
D) none of the mentioned 
A) process 
B) thread pool 
C) thread queue 
D) none of the mentioned

Question 7

The swaps processes in and out of the memory.

Accepted Answer

A) Memory Manager 
B) CPU 
C) CPU Manager 
D) User 
A) Memory Manager 
B) CPU 
C) CPU Manager 
D) User

Question 8

Each connection arriving at multi threaded servers via network is generally

Accepted Answer

A) is directly put into the blocking queue 
B) is wrapped as a task and passed on to a thread pool 
C) is kept in a normal queue and then sent to the blocking queue from where it is dequeued 
D) none of the mentioned 
A) is directly put into the blocking queue 
B) is wrapped as a task and passed on to a thread pool 
C) is kept in a normal queue and then sent to the blocking queue from where it is dequeued 
D) none of the mentioned

Question 9

Thread pools help in___________

Accepted Answer

A) servicing multiple requests using one thread 
B) servicing a single request using multiple threads from the pool 
C) faster servicing of requests with an existing thread rather than waiting to create a new thread 
D) none of the mentioned 
A) servicing multiple requests using one thread 
B) servicing a single request using multiple threads from the pool 
C) faster servicing of requests with an existing thread rather than waiting to create a new thread 
D) none of the mentioned

Question 10

When the process issues an I/O request___________

Accepted Answer

A) It is placed in an I/O queue 
B) It is placed in a waiting queue 
C) It is placed in the ready queue 
D) It is placed in the Job queue 
A) It is placed in an I/O queue 
B) It is placed in a waiting queue 
C) It is placed in the ready queue 
D) It is placed in the Job queue

Question 11

If the thread pool contains no available thread___________

Accepted Answer

A) the server runs a new process 
B) the server goes to another thread pool 
C) the server demands for a new pool creation 
D) the server waits until one becomes free 
A) the server runs a new process 
B) the server goes to another thread pool 
C) the server demands for a new pool creation 
D) the server waits until one becomes free

Question 12

A process can never be sure that a signal it has sent___________

Accepted Answer

A) has which identifier 
B) has not been lost 
C) has been sent 
D) all of the mentioned 
A) has which identifier 
B) has not been lost 
C) has been sent 
D) all of the mentioned

Question 13

Thread pools are useful when

Accepted Answer

A) when we need to limit the number of threads running in the application at the same time 
B) when we need to limit the number of threads running in the application as a whole 
C) when we need to arrange the ordering of threads 
D) none of the mentioned 
A) when we need to limit the number of threads running in the application at the same time 
B) when we need to limit the number of threads running in the application as a whole 
C) when we need to arrange the ordering of threads 
D) none of the mentioned

Question 14

In UNIX, the___________    system call is used to send a signal.

Accepted Answer

A) sig 
B) send 
C) kill 
D) sigsend 
A) sig 
B) send 
C) kill 
D) sigsend

Question 15

From the following, which is not a common file permission?

Accepted Answer

A) Write 
B) Execute 
C) Stop 
D) Read 
A) Write 
B) Execute 
C) Stop 
D) Read

Question 16

The number of the threads in the pool can be decided on factors such as___________

Accepted Answer

A) number of cpus in the system 
B) amount of physical memory 
C) expected number of concurrent client requests 
D) all of the mentioned 
A) number of cpus in the system 
B) amount of physical memory 
C) expected number of concurrent client requests 
D) all of the mentioned

Question 17

In virtual memory, which is not a page replacement algorithm ?

Accepted Answer

A) FIFO 
B) BFS 
C) LRU 
D) Optimal 
A) FIFO 
B) BFS 
C) LRU 
D) Optimal

Question 18

Which one of the following is the deadlock avoidance algorithm?

Accepted Answer

A) banker's algorithm 
B) elevator algorithm 
C) karn's algorithm 
D) none of the mentioned 
A) banker's algorithm 
B) elevator algorithm 
C) karn's algorithm 
D) none of the mentioned

Question 19

File type can be represented by___________

Accepted Answer

A) file name 
B) file extension 
C) file identifier 
D) none of the mentioned 
A) file name 
B) file extension 
C) file identifier 
D) none of the mentioned

Question 20

The child process completes execution, but the parent keeps executing, then the child process is known as

Accepted Answer

A) Orphan 
B) Zombie 
C) Body 
D) Dead 
A) Orphan 
B) Zombie 
C) Body 
D) Dead

Exam 24: Operating System and Thread Pool

A parent process calling system call will be suspended until children processes terminate.

Which of the following are forms of malicious attack?

In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the:

What is the idea behind thread pools?

Mutual exclusion can be provided by the___________

Instead of starting a new thread for every task to execute concurrently, the task can be passed to a___________

The swaps processes in and out of the memory.

Each connection arriving at multi threaded servers via network is generally

Thread pools help in___________

When the process issues an I/O request___________

If the thread pool contains no available thread___________

A process can never be sure that a signal it has sent___________

Thread pools are useful when

In UNIX, the___________ system call is used to send a signal.

From the following, which is not a common file permission?

The number of the threads in the pool can be decided on factors such as___________

In virtual memory, which is not a page replacement algorithm ?

Which one of the following is the deadlock avoidance algorithm?

File type can be represented by___________

The child process completes execution, but the parent keeps executing, then the child process is known as

Operating System

Operating System and Software

Operating System and Computer Basics: Formatting, Clipboard, Radio Buttons, Bankers Algorithm, and More

Computer Software and Operating System

Processor and Memory Fundamentals

Computer Architecture and Memory

Computer Science and Information Technology on Raid, Middleware, and CPU Scheduling

Understanding Process Scheduling in Operating Systems

Operating System and Process Management

Process Scheduling and Synchronization in Multi-Programming Environment

Process Management and Interprocess Communication in Unix

Semaphores, Spinlocks, and Monitors: Understanding Synchronization in Operating Systems

Concurrency Control and Deadlock Prevention in Operating Systems

Deadlock and Resource Allocation in Computer Systems

Memory Management and Swapping Techniques

Memory Management in Operating Systems

Understanding Paging and Memory Management in Operating Systems

Understanding Virtual Memory and Page Replacement Algorithms

Virtual Memory, Segmentation, and Disk Management

Disk Management and I/O Subsystem

Linux Kernel and System Structures

Thread Management and Synchronization in Operating Systems

Operating System Concepts: System Calls, Threads, and Signals

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