# Arts (English Medium) Class 12 - CBSE Question Bank Solutions for Computer Science (Python)

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Computer Science (Python)
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Janish Khanna used a pen drive to copy files from his friend's laptop to his office computer. Soon his computer started abnormal functioning. Sometimes it would restart by itself and sometimes it would stop different applications running on it. Which of the following options out ·of (i) to (iv), would have caused the malfunctioning of the computer? Justify the reason for your chosen option:

1) Computer Virus

2)Spain Mail

3) Computer Bacteria

4) Trojan Horse

[0.12] Security Aspects
Chapter: [0.12] Security Aspects
Concept: Network Threats and Its Prevention

What is Trojan Horse?

[0.12] Security Aspects
Chapter: [0.12] Security Aspects
Concept: Network Threats and Its Prevention

State TRUE or FALSE for the following case:

Stack is a linear data structure.

[0.03] Stack
Chapter: [0.03] Stack
Concept: Stack

State TRUE or FALSE for the following case:

Stack does not follow LIFO rule.

[0.03] Stack
Chapter: [0.03] Stack
Concept: Stack

Write a program to reverse a string using stack.

[0.03] Stack
Chapter: [0.03] Stack
Concept: Stack

How does FIFO describe queue?

[0.04] Queue
Chapter: [0.04] Queue
Concept: Introduction to Queue in Python (FIFO)

Compare and contrast queue with stack.

[0.04] Queue
Chapter: [0.04] Queue
Concept: Introduction to Queue in Python (FIFO)

______ is a linear list of elements in which insertion and deletion takes place from different ends.

[0.04] Queue
Chapter: [0.04] Queue
Concept: Introduction to Queue in Python (FIFO)

Elements ‘A’, ’S’, ’D’ and ‘F’ are present in the queue, and they are deleted one at a time, ______ is the sequence of element received.

[0.04] Queue
Chapter: [0.04] Queue
Concept: Introduction to Queue in Python (FIFO)

Identify data required to be maintained to perform the following service:

Declare exam results and print e-certificates.

[0.07] Understanding Data
Chapter: [0.07] Understanding Data
Concept: Introduction to Data

Identify data required to be maintained to perform the following service:

Register participants in an exhibition and issue biometric ID cards.

[0.07] Understanding Data
Chapter: [0.07] Understanding Data
Concept: Introduction to Data

Identify data required to be maintained to perform the following service:

To search for an image by a search engine.

[0.07] Understanding Data
Chapter: [0.07] Understanding Data
Concept: Introduction to Data

Identify data required to be maintained to perform the following service:

To book an OPD appointment with a hospital in a specific department.

[0.07] Understanding Data
Chapter: [0.07] Understanding Data
Concept: Introduction to Data

Give the term for the following:

Collection of logically related records.

[0.08] Database Concepts
Chapter: [0.08] Database Concepts
Concept: Introduction to Database Concepts

Define RDBMS. Name any two RDBMS software.

[0.09] Structured Query language (SQL)
Chapter: [0.09] Structured Query language (SQL)
Concept: Introduction of Structured Query Language (SQL)

What do you understand by the term network?

[0.1] Computer Networks
Chapter: [0.1] Computer Networks
Concept: Introduction to Computer Networks

Which of the following is an invalid datatype in Python?

[0.01] Exceptional Handling in Python
Chapter: [0.01] Exceptional Handling in Python
Concept: Introduction of Exception Handling in Python

Given is a Python string declaration:

myexam="@@CBSE Examination 2022@@"

Write the output of:

print(myexam[::-2])
[0.03] Stack
Chapter: [0.03] Stack
Concept: Stack

______ function is used to arrange the elements of a list in ascending order.

[0.05] Sorting
Chapter: [0.05] Sorting
Concept: Introduction of Sorting
• Assertion (A): A stack is a LIFO structure.
• Reason (R): Any new element pushed into the stack always gets positioned at the index after the last existing element in the stack.
[0.03] Stack
Chapter: [0.03] Stack
Concept: Stack
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