Question 1

Question 1Arithmetic Logic Unit and Control Unit of a computer together are known as ............... .Central Processing UnitMemory UnitI/O UnitOperating Unit

Accepted Answer

Central Processing UnitReason — Arithmetic and logic unit along with control unit of a computer, combined into a single unit, is known as central processing unit.

Question 2

Question 2............... is logically equivalent to an inverted XOR gate.ANDXNORORNOR

Accepted Answer

XNORReason — An XOR gate outputs true only when the inputs are different. The XNOR gate, being the inverse of the XOR gate, outputs true when the inputs are the same. This means that the XNOR gate behaves exactly like an XOR gate with its output inverted, making it logically equivalent to an inverted XOR gate.

Question 3

Question 3The smallest individual unit in a program is known as ............... .DigitsTokensLiteralsUnits

Accepted Answer

TokensReason — The smallest individual unit in a program is known as a token.

Question 4

Question 4Which of the following is an invalid data type in Python?SetsRealIntegerNone of these

Accepted Answer

RealReason — Real is not a standard built-in data type in Python.

Question 5

Question 5What will be the output of the following code?import math
x = 100
print(x>0 and math.sqrt(x))True11010.0

Accepted Answer

10.0Reason — The code first imports the math module to access mathematical functions. It then assigns the value 100 to the variable x. The print statement checks whether x > 0, which is True because x is 100. Since the and operator is used, and the first condition is True, the code proceeds to evaluate math.sqrt(x), which calculates the square root of x. The square root of 100 is 10.0, so the print statement outputs 10.0.

Question 6

Question 6............... is a network security system, either hardware-based or software-based, that controls the incoming and outgoing network traffic based on a set of rules.FirewallAntivirus SoftwareVMwareAdware

Accepted Answer

FirewallReason — A firewall is a network security system, either hardware-based or software-based, that controls incoming and outgoing network traffic based on a set of predefined security rules.

Question 7

Question 7Kritika wants to divide a number and store the result without decimal places into an integer variable. Suggest an appropriate operator from the following:/%//Both (a) and (b)

Accepted Answer

//Reason — The // operator is the floor division operator, which divides the number and returns the result as an integer by discarding the decimal part.

Question 8

Question 8Which of the following methods splits the string at the first occurrence of separator and returns a tuple containing three items?index()partition()split()count()

Accepted Answer

partition()Reason — The partition() method splits the string at the first occurrence of the specified separator and returns a tuple containing three elements: the part before the separator, the separator itself, and the part after the separator.

Question 9

Question 9Find the output of the following:for i in range(20, 30, 2):
    print (i)1.21  
22  
23  
24  
25
2.21  
23  
25  
27  
29
3. SyntaxError4.20  
22  
24  
26  
28

Accepted Answer

20
22
24
26
28
Reason — The code uses a for loop with range(20, 30, 2), generating numbers from 20 to 28 with a step of 2. It iterates through these values, printing each number (20, 22, 24, 26, 28) on a new line.

Question 10

Question 10Which of the following functions will return the first three characters of a string named 's'?s[3:]s[:3]s[-3:]s[:-3]

Accepted Answer

s[:3]Reason — The slice s[:3] returns the first three characters of the string s. The slice starts from the beginning (index 0) up to index 2.

Question 11

Question 11Observe the given code and select the appropriate output.Tuple given: tup1 = (10, 20, 30, 40, 50, 60, 70, 80, 90)What will be the output of: print(tup1[3:7:2])(40, 50, 60, 70, 80)(40, 50, 60, 70)(40, 60)Error

Accepted Answer

(40, 60)Reason — The slice tup1[3:7:2] extracts elements starting from index 3 up to index 6, with a step of 2. This means it selects elements at indices 3, 5, resulting in the tuple (40, 60). The print statement outputs these selected elements.

Question 12

Question 12Select the correct output of the following string operators.str1='One'
print(str1[:3] + 'Two' + str1[-3:])OneOneTwoTwoOneOneOneTwoOneError

Accepted Answer

OneTwoOneReason — The code uses str1[:3] to extract the first three characters of str1, which are 'One', and str1[-3:] to extract the last three characters, which are also 'One'. It then concatenates these with 'Two', resulting in 'OneTwoOne', which is printed.

Question 13

Question 13When a list is contained in another list as a member-element, it is called ............... .Nested tupleNested listArrayList

Accepted Answer

Nested listReason — When a list is contained within another list as an element, it is called a nested list.

Question 14

Question 14The ............... method removes the last entered element from the dictionary.pop()remove()popitem()del

Accepted Answer

popitem()Reason — The popitem() method removes and returns the last entered key-value pair from the dictionary.

Question 15

Question 15Srishti is down with fever, so she decides not to go to school. The next day, she calls up her classmate Shaurya and enquires about the computer class. She also requests him to explain the concept taught in the class. Shaurya quickly downloads a 2-minute video clip from the internet explaining the concept of Tuples in Python. Using video editor, he adds this text in the downloaded video clip: "Prepared by Shaurya". Then, he emails the modified video clip to Srishti. This act of Shaurya is an example of:Fair useHackingCopyright infringementCyber crime

Accepted Answer

Copyright infringementReason — Shaurya downloading, modifying, and emailing a video clip without proper authorization from the original content creator constitutes copyright infringement.

Question 16

Question 16............... are the records and traces individuals leave behind as they use the internet.Digital footprintsCookiesWebsiteURL

Accepted Answer

Digital footprintsReason — Digital footprints are the records and traces individuals leave behind as they use the internet.

Question 17

Question 17Assertion (A): In Python, a variable can hold values of different types at different times.Reason (R): Once assigned, a variable's data type remains fixed throughout the program.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationIn Python, variables are dynamically typed, so they can hold values of different types at different times. This means that a variable's data type is not fixed once assigned, and Python allows changing the type of a variable during the program's execution.

Question 18

Question 18Assertion (A): Python lists allow modifying their elements by indexes easily.Reason (R): Python lists are mutable.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationPython lists allow modifying their elements using indexes. This is possible because Python lists are mutable, meaning their contents can be changed after creation.

Question 19

Question 19Convert the following binary numbers into decimal:(a) 10010(b) 101010

Accepted Answer

(a) 10010BinaryNoPowerValueResult0 (LSB)2010x1=012121x2=202240x4=002380x8=01 (MSB)24161x16=16Equivalent decimal number = 2 + 16 = 18Therefore, (10010)2 = (18)10.(b) 101010BinaryNoPowerValueResult0 (LSB)2010x1=012121x2=202240x4=012381x8=8024160x16=01 (MSB)25321x32=32Equivalent decimal number = 2 + 8 + 32 = 42Therefore, (101010)2 = (42)10.

Question 20

Question 20Draw a logical circuit for the following equations:(A+B)CAB'+C'

Accepted Answer

1. Logical circuit for (A+B)C is shown below:2. Logical circuit for AB'+C' is shown below:

Practice Paper

Section A 1 Mark Each

Section B 2 Marks Each

Section C 3 Marks Each

Section D 4 Marks Each

Section E 5 Marks Each