CS604 grand quiz (mcqs) Solution 2021 - VuDaily.com

CS604 grand quiz (mcqs) Solution 2021


cs604 Quiz


CS 604 QUIZ Solution 2020/2021


 Question # 1

When processes are generated using fork () system call and then after that they are coordinated with each other using IPC channel. They are utilizing a separate address space for each of process (parent, child),, kernel resources and IPC channel. This makes it a more heavy. Which strategy can be used to make it light?

Select the correct option

         

Termination of child process when these become more

         

Scheduling of each process

         

Use of threads

         

Use of Batch systems



Question # 2 In Unix/Linux environment Ali want to know the number of processes running on the system and their status, number of CPUs in the system and their usage, amount of main memory and its usage. Which of the following command will help in this regard?

Select the correct option

         

$ ps

         

$ gcc

         

$ fifo

         

$ top



Question # 3

Critical section problem is to __________the concurrent execution of cooperating process.

Select the correct option

         

update

         

serialize

         

stop

         

start



 

Question # 4

How many modes are supported in operating system?

Select the correct option

         

1       

2       

3       

4

 

Question # 5

___________ is also called Swapper.

Select the correct option

         

Long term

         

Short term

 

Medium term

         

Swap space



Question # 6 of 30 ( Start time: 04:12:16 PM, 01 January 2021 )    Total Marks: 1

You can have a thread wait for another thread within the same process by using the _______ system call.

Select the correct option

         

pthread_join()

         

pthread_exit()

         

pthread_create()

         

pthread_terminate()

 

Question # 7 of 30 ( Start time: 04:12:52 PM, 01 January 2021 )    Total Marks: 1

Which process can be affected by other processes executing in the system?

Select the correct option

         

cooperating process

         

child process

         

parent process

         

init process



Question # 8 of 30 ( Start time: 04:14:14 PM, 01 January 2021 )    Total Marks: 1

Processes P1, P2, P3, P4 enter the ready queue at times 0, 3, 3, 11 with burst times P1=8, P2=2, P3=1, P4=1. With Shortest Remaining Time First, __________ process is given CPU at time T=3. 

Select the correct option

         

P1

         

P2

         

P3

         

P4



Question # 9 of 30 ( Start time: 04:15:35 PM, 01 January 2021 )    Total Marks: 1

P1, P2, P3, P4, P5 are five processes with ticket numbers P1=1, P2=2, P3=4, P4=2, P5=4 then considering Lamport’s bakery algorithm, __________ process enters critical section after P1. 

Select the correct option

         

P2 

         

P3 

         

P4 

         

P5 

 

Question # 10 of 30 ( Start time: 04:16:25 PM, 01 January 2021 )  Total Marks: 1

OS helps manages the following except

 

Select the correct option

 

Application software 

Memory

Virtual memory

Bus speed of the system

 

Question # 11 of 30 ( Start time: 04:18:11 PM, 01 January 2021 )  Total Marks: 1

If your processor does not have two slots empty in Per Process File Descriptor Table, then your _________ system call will fail.

Select the correct option

         

Pipe

Read

Write

Open



Question # 12 of 30 ( Start time: 04:19:40 PM, 01 January 2021 )  Total Marks: 1

Both in two atomic instructions TestAndSet and swap two critical section requirements are satisfied but not _____________.

Select the correct option

         

Mutual Exclusion

         

Progress

         

Bounded Waiting

         

Assumptions



Question # 13 of 30 ( Start time: 04:20:58 PM, 01 January 2021 )  Total Marks: 1

In producer-Consumer problem synchronization is required. On which shared area this synchronization actually affect?

Select the correct option

         

Counter

         

Buffer

         

Entry section

         

Exit section



Question # 14 of 30 ( Start time: 04:22:02 PM, 01 January 2021 )  Total Marks: 1

The region in the memory that a process is allowed to access is known as process__________.

Select the correct option

         

Operation

         

Address Space

         

Register

         

Instruction

 

Question # 15 of 30 ( Start time: 04:23:19 PM, 01 January 2021 )  Total Marks: 1

You can use the rm file1 command to __________ file1.



Select the correct option

         

retrieve

         

remove      

make 

modify



Question # 16 of 30 ( Start time: 04:24:31 PM, 01 January 2021 )  Total Marks: 1

____________ multi-threading model provides full concurrency. 

Select the correct option

         

One-to-Many 

         

Many-to-Many 

         

One-to-One

         

Many-to-One 



Question # 17 of 30 ( Start time: 04:26:24 PM, 01 January 2021 )  Total Marks: 1

_____ system call is used to write to a file or FIFO or any other IPC channel.

Select the correct option

         

read

write

open

fork



Question # 18 of 30 ( Start time: 04:27:18 PM, 01 January 2021 )  Total Marks: 1

which is not basic computing hardware?

Select the correct option

         

CPU 

Memory

Compact Disc

I/O Devices





Question # 19 of 30 ( Start time: 04:28:19 PM, 01 January 2021 )  Total Marks: 1

Using hardware solution to synchronization for complex problems, introduce a new synchronization tool know as _______________.

Select the correct option

         

TestAndSet

Semaphore

Swap

Trap

Question # 20 of 30 ( Start time: 04:29:39 PM, 01 January 2021 )  Total Marks: 1

The link between two processes P and Q to send and receive messages is called __________

Select the correct option

         

Communication Link

         

Message-Passing Link

         

Synchronization Link

         

All of the mentioned





Question # 21 of 30 ( Start time: 04:31:25 PM, 01 January 2021 )  Total Marks: 1

In process synchronization, if both the producer and consumer attempt to update the buffer concurrently, the machine language statements may get interleaved. Interleaving depends upon how the producer and consumer processes are____________.

Select the correct option

         

separated

         

scheduled

         

stopped

         

interrupted

Question # 22 of 30 ( Start time: 04:32:31 PM, 01 January 2021 )  Total Marks: 1

When a process P1 switches from the running state to the waiting state because an I/O request is being completed.This scheduling is called---------

Select the correct option

         

Non-preemptive

         

Switching

         

Termination

         

Preemptive



Question # 23 of 30 ( Start time: 04:34:26 PM, 01 January 2021 )  Total Marks: 1

We can terminate a thread explicitly by either returning from the thread function or by using the ____________ call.



Select the correct option

         

express()

         

pthread_exit()

         

win()

         

slow()

Question # 24 of 30 ( Start time: 04:35:20 PM, 01 January 2021 )  Total Marks: 1

A solution to the critical section problem must satisfy the following requirements except

Select the correct option

         

Progress

         

Mutual Exclusion

Bounded Waiting

Race Condition


Question # 25 of 30 ( Start time: 04:36:36 PM, 01 January 2021 )  Total Marks: 1

The situation in which no context switching is required in multiprocessor systems is referred to as _______ .

Select the correct option

         

Busy Waiting

         

Spin lock

         

Interrupt

         

Scheduler

 



Question # 26 of 30 ( Start time: 04:38:27 PM, 01 January 2021 )  Total Marks: 1

Which is not a parameter of pthread_create(). 

Select the correct option

         

Function 

         

Return status 

         

Thread ID 

Thread attributes 


Question # 27 of 30 ( Start time: 04:40:23 PM, 01 January 2021 )  Total Marks: 1

To display all processes ___________ option is used with ps command. 

Select the correct option

         

-u

         

-a

         

-l

         

-e

Question # 28 of 30 ( Start time: 04:41:26 PM, 01 January 2021 )  Total Marks: 1

Batch programs are usually __________ programs.

Select the correct option       

Interactive

Non-interactive   

Foreground

Preemptive





Question # 29 of 30 ( Start time: 04:43:25 PM, 01 January 2021 )  Total Marks: 1

-------------  is a segment of code that accesses a shared resource  like data structure  or device that must not be concurrently accessed by more than one thread of execution.

Select the correct option

         

Multithreading

         

Context switching

         

Critical section 

         

Pipelining



Question # 30 of 30 ( Start time: 04:45:00 PM, 01 January 2021 )  Total Marks: 1

In system call that creates a pipe for IPC. If one of the operation from read/write would fail then what will be returned as result?

Select the correct option

         

-1,+1       

-1       

 1         

 0

 

 

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