Operating system question lateral entry

Operating System(Asked question for lateral entry)

Sub Code: - 1618305

          (Lateral Entry)      


Time : 3Hrs

  Semester  V(New)/CSE  

  Operating Sys.         

Full Marks : 70

Pass marks : 28


Group A

Choose the most suitable answer from the following options: -   (1*20=20)

(i) What is Operating System?

(a) Collection of programs that manages hardware resources.

(b) System service provider to the application programs.

(c)  Link to interface the hardware and application programs.

(d) All the mentioned

(ii) A process can be terminated due to:

(a) Normal exit

(b) Fatal error

(c) Killed by another process

(d) All above

(iii) When the Process issues an I/O request:

(a) It is placed in an I/O queue

(b) It is placed in a waiting queue

(c) It placed in the ready queue

(d) It is placed in the job queue

(iv) Bounded capacity and unbounded capacity queues are referred to as:

(a) Programmed buffering

(b) Automatic buffering

(c) User defined buffering

(d) No buffering

(v) Inter process communication:

(a) Allow Processes to communicate and synchronization their achme when using the same address space.

(b) Allow the processes to communicate and synchronize their actions without using the same address space.

(c) Allows the processes to only synchronize their action without communication

(d)None of mentioned

(vi) Which of the following condition is required for deadlock to be possible?

(a) Mutual exclusion

(b) A process may hold allocated resources while waiting of other resources

(c) No resource can be forcibly removed from a process holding it.

(d) All of the above

(vii) Binding of instructions and data to memory address can done at

(a) Compile time

(b) Load time

(c) Execution time

(d)All of the above

(viii) A memory buffer used to accommodate a speed differential is called

(a) Stack pointer

(b) Cache

(c) Accumulator

(d) Disk buffer

(ix) Logical memory 10 broken into blocks of the same size called_____

(a) Framed

(b) Pages

(c) Backing store

(d) None of the above

(x) _____is a unique tag, usually a number, identifies the file within the file system.

(a) File identifier

(b) File name

(c) File type

(d) None of the above

(xi) Which file is a sequence of bytes organized into blocks understandable by the system’s linker?

(a) Objects file

(b) Source file

(c) Executable file

(d) Text file

(xii) A system program such as fask in_____ is a consistency checker.

(a) Unix

(b) Window

(c) Macintosh

(d) Solaris

(xiii) Which of the following are forms of malicious attack?

(a) Theft of information

(b) Modification of data

(c) Wiping of information

(d) All above

(xiv)From the following, which is not common file permission?


(b) Execute

(c) Stop

(d) Read

(xv) In distributed system each processor has the own.

(a)  Local memory

(b) Clock

(c)  Both local memory and clock

(d) None of above

(xvi) What are the different ways file accesses takes placed?

(a)  Sequential access

(b) Direct access

(c)  Indexed sequential access

(d) All of above

(xvii) Which are of the following linux file system does not support journaling features?

(a)  ext2

(b) ext3

(c)  ext4

(d) None

(xviii) Which process can be affected by other process as executing in the system?

(a) Co-operating process 

(b) Child process

(c)  Parent process

(d) Init process

(xix) Which are is a synchronization tool

(a)  Thread

(b) Pipe

(c)  Semaphore

(d) Socket

(xx) Mutual exclusion can be provided by the:

(a)  Mutex locks

(b) Binary semaphore

(c)  Both (a) and (b)

(d) None




Answer all Five Questions: -                         (5*4=20) 


2.  List different service of operating system and explain in brief.


Explain virtual machine.


3.  Distinguish between multi programming and multitasking system.


What do you mean by system call?


4. What is process scheduling?


Describe various file access methods.


5.  What is starvation and ageing?


What is paging and swapping?


6. Differentiate between internal and external fragmentation. 


Write in brief about buddy system of memory management in UNIX.


Group:- "C"


Answer all Five Questions: -                         (5*6=30) 


7. Define operating system and discuss its role from different perspective.  


Explain fundamental difference between Network OS and Distribute OS.


8.  Define IPC. What are different methods used from logical implementations of massage passing system?


What is thrashing? What are the causes for thrashing?


9.  What are monitor? Explain solution of dinning philosopher’s problem using monitor.


Explain two primitive semaphore operations. What are their advantages?


10.  Why is deadlock state more critical than starvation? Explain resource allocation graph with a deadlock in a cycle but not a deadlock.


Explain in detail different methods to recover deadlocks.


11.  Explain any disk scheduling algorithm with suitable example.


Write short notes on:

1.     Recovery from deadlock

2.    Design principle of LINUX system.






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