List of top Computer Science Questions

Which malware type disguises itself as legitimate software?
Match List-I with List-II
\begin{tabular{|l|l|} List-I (Malware) & List-II (Threat)
(A) Keylogger & (I) It generates revenue using “pay per click” mechanism to charge
& its clients against the number of clicks on their displayed ads.
(B) Adware & (II) Makes the logs of daily keyboard usage and may send it to an
& external entity as well.
(C) Spyware & (III) Standalone programs that are capable of replicating on their own
& and can spread to other computers through the network.
(D) Worm & (IV) Usually tracks internet usage data and sells it to advertisers.

Choose the correct answer from the options given below:
What is the range of frequency for radio waves?
Consider the following numList:
\begin{tabular{|c|c|c|c|c|c|} 8 & 7 & 13 & 1 & -9 & 4

Sequence the following output obtained after each pass of comparison using bubble sort.
(A) 7 8 1 -9 4 13
(B) 7 1 -9 4 8 13
(C) -9 1 4 7 8 13
(D) 1 -9 4 7 8 13
Choose the correct answer from the options given below:
What is the measurment unit of bandwidth?
Which statement is true about a Trojan?
Sales
\begin{tabular{|l|l|l|l|} ID & customer_id & order_date & total_amount
1 & C101 & 2022-01-15 & 1000
2 & C102 & 2022-02-20 & 500
3 & C103 & 2022-03-10 & 800
4 & C101 & 2022-04-05 & 600

What is the result of the following query with respect to given relation 'Sales'?
SELECT COUNT(DISTINCT customer_id) FROM Sales;}
Which protocol is used to format and transmit the information from the World Wide Web?
Match List-I with List-II
\begin{tabular{|l|l|} List-I (Topology) & List-II (Characteristics)
(A) Star & (I) Single backbone cable
(B) Bus & (II) Central hub or switch
(C) Ring & (III) Unidirectional link
(D) Hybrid & (IV) Multiple branches

Choose the correct answer from the options given below:
What describes the work of a repeater?
________ is a search technique that makes use of the ordering of elements in the list to quickly search for a key.
Sometimes, on calling a customer service center, the Interactive Voice Response System (IVRS) tells us to wait till a support person is available. Which data structure this application is of?
Suppose you want to select distinct salaries working in department 101 from the 'Employee' relation. What will be the correct order of writing the query?
(A) FROM Employee
(B) SELECT
(C) WHERE
(D) DISTINCT Salary
(E) Dept_ID= 101
Choose the correct answer from the options given below:
Calculate the degree and cardinality of the given relation below:
\begin{tabular{|l|l|l|l|l|} ID & Name & Email & Address & Phone No.
001 & Ajay & ajay@abc.com & A1-Shakti Nagar, Bangalore & 55218936
002 & Amit & amit@abc.com & C32- Indira Nagar, Lucknow & 45321789
003 & Ashu & ashu@abc.com & 117/82 Patel Nagar, Delhi & 98567894
004 & Ashok & ashok@abc.com & 249-250, Motinagar, Gujrat & 97698541
}
Match List-I with List-II
\begin{tabular{|l|l|} List-I (KEY CONCEPTS IN DATABASE) & List-II (DESCRIPTION)
(A) Database Schema & (I) Snapshot of the database
(B) Database Instance & (II) Restriction on the type of data
(C) Data Dictionary & (III) Skeleton of the database
(D) Data Constraint & (IV) Database catalog

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Which measure of central tendency is better suited for dealing with an outlier?
Calculate the standard deviation of the given temperature below recorded for the 7 days of a week:
24, 24, 21, 20, 26, 27, 30
If a linear search is performed on 10 elements, how many comparisons will be needed in worst case?
What happens even if a key is not present in the list during a linear search?
How many passes are required to sort a list of 6 elements using bubble sort?
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
Choose the correct answer from the options given below:
A loop within a loop will have the time complexity as ________.
Which sorting algorithm involves repeatedly selecting the smallest element and placing it in its correct position?
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?