List of top Computer Science Questions

Which of the following are text functions? (A) MID()
(B) INSTR()
(C) SUBSTR()
(D) LENGTH()
In SQL table, the set of values which a column can take in each row is called __________.
Single row functions are also known as ________ functions.
____________ is a language used to design web pages.
Match List-I with List-II.
List-IList-II
(A) ROUTER(II) Network Device
(B) ETHERNET CARD(IV) Network Interface Card
(C) RING(I) Network Topology
(D) PAN(III) Network Type
Identify type of data being collected/generated in the scenario of recording a video:
Match List-I with List-II.
List-IList-II
(A) Primary key(III) Attribute used to uniquely identify a tuple.
(B) Degree(I) Total number of attributes in a table.
(C) Foreign key(II) Attribute used to relate two tables.
(D) Constraint(IV) A restriction on the type of data that can be inserted in a column.
Given data: Weight of 20 students in kgs = [35, 35, 40, 40, 40, 50, 50, 50, 50, 50, 60, 65, 65, 70, 70, 72, 75, 75, 78, 78] Find the mode.
Identify the incorrect statement in the context of measures of variability:

Given a list numList of n elements and key value K, arrange the following steps for finding the position of the key K in the numList using the binary search algorithm i.e. BinarySearch(numList, key).

 

  1. (A) Calculate mid = (first + last) // 2
  2. (B) SET first = 0, last = n - 1
  3. (C) PRINT "Search unsuccessful"
  4. (D) WHILE first <= last REPEAT
    • IF numList[mid] = key, 
      PRINT "Element found at position", mid+1
      STOP
    • ELSE
      • IF numList[mid] > key, THEN last = mid - 1
      • ELSE first = mid + 1
In binary search, after every pass of the algorithm, the search area:
For binary search, the list is in ascending order and the key is present in the list. If the middle element is less than the key, it means:
The amount of time an algorithm takes to process a given data can be called its:
Arrange the following in order related to bubble sort for a list of elements: Initial list: \[4, -9, 12, 30, 2, 6\] (A) \[4, -9, 12, 30, 2, 6\]
(B) \[-9, 4, 12, 30, 2, 6\]
(C) \[-9, 4, 12, 2, 30, 6\]
(D) \[-9, 4, 12, 2, 6, 30\]
Identify the correct place where we have to use repeaters.
Evaluate the postfix expression: \[ 24 \; 5 \; 7 \; \; 5 \; / \; + \]
STACK follows __________ principle, where insertion and deletion is from __________ end/ends only.
Given a scenario: Suppose there is a web-server hosting a website to declare results. This server can handle a maximum of 100 concurrent requests to view results. So, as to serve thousands of user requests, a __________ would be the most appropriate data structure to use.
In MAC address, Organisational Unique Identifier (OUI) consists of __________.
To perform enqueue and dequeue efficiently on a queue, which of the following operations are required?
A) isEmpty
B) peek
C) isFull
D) update
Identify the type of expression where operators are placed before the corresponding operands:
Identify the correct IP address from the options given:
Identify the correct python statement to open a text file \texttt{"data.txt"} in both read and write mode.
Identify the correct code to read data from the file \texttt{notes.dat} in a binary file:
Arrange the following Python code segments in order with respect to exception handling: (A) except ZeroDivisionError:
\hspace{0.5cm} print("Zero denominator not allowed")
(B) finally:
\hspace{0.5cm} print("Over and Out")
(C) try:
\hspace{0.5cm} n = 50
\hspace{0.5cm} d = int(input("enter denominator"))
\hspace{0.5cm} q = n/d
\hspace{0.5cm} print("division performed")
(D) else:
\hspace{0.5cm} print("Result=", q)