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Organisation : West Bengal Joint Entrance Examinations Board (WBJEEB)
Exam Name : JECA Common Entrance Test for Master of Computer Application MCA
Document Type : Old Question Paper
Year : 2023
Website :

JECA Old Question Paper

______________ interrupt may happen due to power failure.
(A) I/O
(B) Timer
(C) Hardware
(D) Program

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Address of the next instruction to be executed is specified by ______________.
(D) PC

Auxiliary memory is also known as ______________ memory.
(A) Primary
(B) Secondary
(C) Binary
(D) Quad

BIOS means ______________.
(A) basic input/output system
(B) best input/output system
(C) basic input system
(D) basic output system

_________ is the most appropriate scheduling in case of a time-shared operating system.
(B) RR

If only one process can be able to access a particular resource at a time, then it is known as ______________.
(A) Mutual execution
(B) Mutual exclusion
(C) Multiple execution
(D) Multiple exclusion

Resource allocation graph is used to represent ______________.
(A) deadlock
(B) virtual memory
(C) main memory
(D) scheduling

Banker’s algorithm for resource allocation deals with ______________.
(A) mutual exclusion
(B) mutual inclusion
(C) deadlock recovery
(D) deadlock avoidance

Page fault means ______________.
(A) required page is available in main memory
(B) required page is not available in main memory
(C) segment number
(D) reduce page I/O

___________ is a technique to move a process from main memory to secondary memory.
(A) Deadlock
(B) Synchronization
(C) Caching
(D) Swapping

Demand paging is considered as ______________.
(A) fetching a page when not needed
(B) switching between two processes
(C) fetching a page only when needed
(D) switching between two threads

Thrashing means a condition having ______________.
(A) minimum paging
(B) optimized paging
(C) synchronized paging
(D) excessive paging

A counting semaphore is initialized to 15. Then, 4 wait operations and 2 signal operations are completed on this semaphore. The resulting value of the semaphore is ____________.
(A) 11
(B) 13
(C) 17
(D) 19

What do you mean by fork( ) ? Choose the correct option.
(A) Starvation
(B) Creation of new task
(C) Demand paging
(D) Semaphore

In file management, FAT means ______________.
(A) Feature Access Table
(B) File Access Table
(C) Fault Allocation Table
(D) File Allocation Table

In shell script, which command is used to create a new directory ?
(A) vi
(B) touch
(C) cd
(D) mkdir

In shell script, which command is used to copy a file ?
(A) copy
(B) cpy
(C) cp
(D) cy

In shell script, which command is used to delete a file ?
(A) delete
(B) del
(C) remove
(D) rm

In Unix/Linux platform, which command is used to find out the difference between two files ?
(A) diff
(B) comm
(C) du
(D) whereis

In Unix/Linux platform, which command is used to create a symbolic link ?
(A) ls -s
(B) ls -i
(C) ln -sym
(D) ln -s

In Unix/Linux platform, which command is used to view the inode number of a file ?
(A) ls -i
(B) ls -a
(C) ls -l
(D) ls -r

In Unix/Linux platform, which command is used to specify the access mode for files ?
(A) chmod
(B) cm
(C) am
(D) chacc

In Unix/Linux platform, _________ command is used to show current running processes.
(A) ps
(B) ls
(C) sh
(D) du

In singly linked list, the time complexity for insertion at a particular node is ___________.
(A) O(1)
(B) O(n2)
(C) O(n)
(D) O(n logn)

In stack data structure, ______________ operation is not permitted.
(A) Push
(B) Pop
(C) Empty_Check
(D) Enqueue

In tree data structure, the in-degree of root node is always ______________.
(A) 0
(B) 1
(C) 2
(D) 3

In binary tree data structure, using depth-first approach, preorder traversal means _______.
(A) Root → Left-Subtree → Right-Subtree
(B) Left-Subtree → Root → Right-Subtree
(C) Left-Subtree → Right-Subtree → Root
(D) Left-Subtree → Right-Subtree

Find out the wrong statement based on the characteristics of AVL tree data structure.
(A) AVL tree is a binary search tree in nature.
(B) AVL tree is known as height-balanced tree.
(C) AVL tree has O(log2 n) search time complexity considering ‘n’ as number of nodes.
(D) AVL tree has O(n) search time complexity considering ‘n’ as number of nodes.

Example of non-linear data structure is ______________.
(A) Linked-list
(B) Graph
(C) Queue
(D) Stack

Download Old Question Paper

JECA 2023 –
JECA 2022 –

Instructions of Candidates

Duration: 2 Hours
No. of MCQ : 100
Full Marks: 120

1. All questions are of objective type having four answer options for each.
2. Category-1 : Carries 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.

3. Category-2 :
Carries 2 marks each and one or more option(s) is/are correct. If all correct answers are not marked and no incorrect answer is marked, then score = 2- number of correct answers marked – actual number of correct answers. If any wrong option is marked or if any combination including a wrong option is marked, the answer will be considered wrong, but there is no negative marking for the same and zero mark will be awarded.

4. Questions must be answered on OMR sheet by darkening the appropriate bubble marked A, B, C, or D.
5. Use only Black/Blue ink ball point pen to mark the answer by filling up of the respective bubbles completely.
6. Write question booklet number and your roll number carefully in the specified locations of the OMR Sheet. Also fill appropriate bubbles.
7. Write your name (in block letters), name of the examination center and put your signature (as is appeared in Admit Card) in appropriate boxes in the OMR Sheet.

8. The OMR sheet is liable to become invalid if there is any mistake in filling the correct bubbles for question booklet number/roll number or if there is any discrepancy in the name/signature of the candidate, name of the examination center. The OMR Sheet may also become invalid due to folding or putting stray marks on it or any damage to it. The consequence of such invalidation due to incorrect marking or careless handling by the candidate will be the sole responsibility of candidate.

9. Candidates are not allowed to carry any written or printed material, calculator, pen, log-table, wristwatch, any communication device like mobile phones, bluetooth device etc. inside the examination hall. Any candidate found with such prohibited items will be reported against and his/her candidature will be summarily cancelled.

10. Rough work must be done on the question booklet itself. Additional blank pages are given in the question booklet for rough work.
11. Hand over the OMR Sheet to the invigilator before leaving the Examination Hall.

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