List of top Questions asked in CBSE CLASS XII

The SELECT statement when combined with \(\_\_\_\_\_\_\) clause, returns records without repetition.

What will be the output of the following statement:
print(16 * 5 / 4 * 2 / 5 - 8)

The slicing operations in the given code work as follows:

myStr[:4] extracts the first 4 characters, which are "MISS".
myStr[-5:] extracts the last 5 characters, which are "SIPPI".
These two substrings are concatenated with a "#" in between, resulting in "MISS#SIPPI".

In SQL, the aggregate function which will display the cardinality of the table is \(\_\_\_\_\_\).

Which protocol out of the following is used to send and receive emails over a computer network?

Identify the invalid Python statement from the following:

Question: Select the correct output of the following code:


event = "G20 Presidency@2023"
L = event.split(' ')
print(L[::-2])

Consider the statements given below and then choose the correct output from the given options:

myStr = "MISSISSIPPI"
print(myStr[:4] + "#" + myStr[-5:])

Identify the statement from the following which will raise an error:

Which of the following options is the correct unit of measurement for network bandwidth?

Observe the given Python code carefully:

a = 20
def convert(a):
    b = 20
    a = a + b
convert(10)
print(a)

Select the correct output from the given options:

State whether the following statement is True or False:
While handling exceptions in Python, name of the exception has to be compulsorily added with except clause.

Which of the following is not a DDL command in SQL?

Fill in the blank:
\(\_\_\_\_\_\_\_\_\) is a set of rules that needs to be followed by the communicating parties in order to have a successful and reliable data communication over a network.

Consider the following Python statement:
F = open('CONTENT.TXT')
Which of the following is an invalid statement in Python?

Assertion (A): CSV file is a human-readable text file where each line has a number of fields, separated by a comma or some other delimiter.
Reason (R): writerow() method is used to write a single row in a CSV file.
Mark the correct choice:

Assertion (A): The expression "HELLO".sort() in Python will give an error.
Reason (R): sort() does not exist as a method/function for strings in Python.
Mark the correct choice:

Expand the following terms:
XML, PPP Give one difference between circuit switching and packet switching.