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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)

Expand the following:

URI

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

What do you understand by the term network?

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

“Every syntax error is an exception but every exception cannot be a syntax error.” Justify the statement.

[0.01] Exceptional Handling in Python
Chapter: [0.01] Exceptional Handling in Python
Concept: Syntax Errors

Differentiate between text file and binary file.

[0.02] File Handling in Python
Chapter: [0.02] File Handling in Python
Concept: Types of Files in Python

Write the file mode that will be used for opening the following file. Also, write the Python statement to open the following file:

a text file “example.txt” in both read and write mode

[0.02] File Handling in Python
Chapter: [0.02] File Handling in Python
Concept: Types of Files in Python
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