Science (English Medium) इयत्ता १२ - CBSE Important Questions for Computer Science (Python)

Write two points of difference between XML and HTML.

Write two points of difference between XML and HTML.

Write the full form of the following protocol:

TCP

The SELECT statement when combined with the ______ clause returns records without repetition.

Write two points of difference between Circuit Switching and Packet Switching.

Expand the following in the context of Internet Protocol:

POP3

Write the full form of the following protocol:

TCP

State True or False.

“Variable declaration is implicit in Python.”

Which of the following is an invalid datatype in Python?

Assertion (A): If the arguments in function call statement match the number and order of arguments as defined in the function definition, such arguments are called positional arguments.

Reasoning (R): During a function call, the argument list first contains default argument(s) followed by the positional argument(s).

Select the correct output of the code:

a = "Year 2022 at All the best"
a = a.split('2')
b = a[0] + ". " + a[1] + ". " + a[3]
print (b)

Which of the following statement(s) would give an error after executing the following code?

S="Welcome to class XII" # Statement 1
print(S)       #Statement 2
S="Thank you"    # Statement 3
S[0]= '@'      # Statement 4
S=S+"Thank you"   # Statement 5

Rao has written a code to input a number and check whether it is prime or not. His code is having errors. Rewrite the correct code and underline the corrections made.

def prime():
n=int(input("Enter number to check :: ")
for i in range (2, n//2):
if n%i=0:
print("Number is not prime \n")
break
else:
print("Number is prime \n’)

Predict the output of the Python code given below:

def Diff(N1,N2):
 if N1>N2:
 return N1-N2
 else:
 return N2-N1

NUM= [10,23,14,54,32]
for CNT in range (4,0,-1):
 A=NUM[CNT]
 B=NUM[CNT-1]
 print(Diff(A,B),'#', end=' ')

Write a function INDEX_LIST(L), where L is the list of elements passed as arguments to the function. The function returns another list named ‘indexList’ that stores the indices of all Non-Zero Elements of L.

For example:

If L contains [12, 4, 0, 11, 0, 56]

The indexList will have - [0, 1, 3, 5].

Consider the given expression:

not True and False or True

Which of the following will be the correct output if the given expression is evaluated?

"Identifiers are names used to identify a variable or function in a program". 

Assertion (A): To use a function from a particular module, we need to import the module.

Reason (R): Import statement can be written anywhere in the program, before using a function from that module.

Atharva is a Python programmer working on a program to find and return the maximum value from the list. The code written below has syntactical errors. Rewrite the correct code and underline the corrections made.

def max_num (L):
        max=L(O)
        for a in L:
                if a > max
                 max=a
        return max

Write a function EOReplace() in Python, which accepts a list L of numbers. Thereafter, it increments all even numbers by 1 and decrements all odd numbers by 1.

Example:

If Sample Input data of the list is:

L = [10, 20, 30, 40, 35, 55]

Output will be:

L = [11, 21, 31, 41, 34, 54]