List of top Computer Science Questions

Calculate the standard deviation of the given temperature below recorded for the 7 days of a week:
24, 24, 21, 20, 26, 27, 30

A loop within a loop will have the time complexity as ________.

If a linear search is performed on 10 elements, how many comparisons will be needed in worst case?

Which of the following are examples of unstructured data?
(A) Writing tweets
(B) Recording a video
(C) Marking attendance by the teacher
(D) Filling a form for opening an account
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How many passes are required to sort a list of 6 elements using bubble sort?

What happens even if a key is not present in the list during a linear search?

Which sorting algorithm involves repeatedly selecting the smallest element and placing it in its correct position?

Which of the following is a linear data structure?
(A) Deque
(B) Queue
(C) Stack
(D) Tree
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Which of the following elements will be present in a queue after the end of the following operation sequence? Assume the queue is empty initially.
enqueue(10)
enqueue(20)
enqueue(30)
dequeue()
enqueue(40)
dequeue()
enqueue(50)
enqueue(60)
(A) 60
(B) 30
(C) 20
(D) 50
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What will be the postfix equivalent of the expression $(A + B) * (C - D)$?

In the below stack operation, what will be the output value for the variable 'result'?
result = 0
stack = [10, 20, 30]
stack.append(40)
result += stack.pop()
result += stack.pop()

Which of the following statements is true in the context of a Deque?

Which of the following statement is correct with respect to exception handling in python?

Which of the following methods is used to position a file object to a specific position in a file?

Consider an empty stack. What will the stack look like (starting from the top) after executing the following operations in sequence?
1. push(7)
2. push(5)
3. push(9)
4. push(11)
5. pop()
6. push(22)
(A) 22
(B) 9
(C) 5
(D) 7
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The 'raise' keyword in Python is used ________.

Arrange the following statements in the correct sequence in order to write multiple strings to a file:
(A) myobj.close()
(B) lines= ["Hello everyone $\backslash$n", "writing multiple strings into file"]
(C) myobj.writelines(lines)
(D) myobj = open ("myfile.txt", 'w')
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Stack follows the ________ principle.

Which of the following statement is CORRECT about GROUP BY clause in SQL?

An analog device which regenerates the weakened signal appearing on the cable and puts them back is known as

A ________ is an access point between an organization's network and the outside world of the internet.

Arrange the evolution of networking as per the development timeline:
(A) The Berners-Lee at CERN developed HTML and URL, thus giving birth to World Wide Web (www).
(B) TCP/IP introduced as standard protocol on ARPANET.
(C) Roy Tomlinson develops network messaging or -mail symbol@ comes to mean "at".
(D) ARPANET became functional by connecting UCLA and SRI.
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The RJ in RJ-45 connector stands for :

Which query correctly finds a category in the 'Commodity' table that has more than 5 products with a Price greater than 600?

Which of the following are multiple row functions?
(A) Sum
(B) Count
(C) Left
(D) Max
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