What is the primary function of a Caesar Cipher?

• To encrypt data by reversing the alphabet

• To encrypt data by shifting letters a fixed number of places

• To encrypt data by substituting each letter with a number

• To encrypt data by using a keyword

Which of the following best describes the Atbash Cipher?

• A cipher that shifts letters by a fixed number

• A cipher that substitutes each letter with its opposite in the alphabet

• A cipher that uses a keyword for encryption

• A cipher that uses numbers to represent letters

How does the Rot13 cipher differ from the Caesar Cipher?

• Rot13 uses a keyword, while Caesar uses a fixed shift

• Rot13 shifts letters by 13 places, while Caesar can use any shift

• Rot13 reverses the alphabet, while Caesar substitutes with numbers

• Rot13 uses numbers, while Caesar uses letters

Explain the historical significance of the Caesar Cipher.

• It was used by Julius Caesar to communicate with his generals

• It was the first cipher to use a keyword

• It was used in World War II for secure communication

• It was developed during the Renaissance for artistic purposes

What is a practical use of the Atbash Cipher in modern times?

• Encrypting military communications

• Creating simple puzzles and games

• Securing online transactions

• Protecting email communications

Describe a scenario where the Rot13 cipher might be used today.

• Encrypting sensitive government documents

• Encoding spoilers or jokes in online forums

• Securing bank account information

• Encrypting personal identification numbers

Calculate the result of applying a Caesar Cipher with a shift of 3 to the word "HELLO".

• KHOOR

• IFMMP

• GDKKN

• JGNNQ

If the Atbash Cipher is applied to the word "SECRET", what is the resulting word?

• HVXIVG

• HVDVHG

• HVWIVG

• HZVIVG

Discuss the limitations of using a Caesar Cipher for secure communication.

• It is too complex for most users to understand

• It is easily broken with frequency analysis

• It requires a computer to encrypt and decrypt

• It can only be used with numbers

What is the main advantage of using the Rot13 cipher over the Caesar Cipher?

• It is more secure due to its complexity

• It is easier to implement because it uses a fixed shift

• It can encrypt both letters and numbers

• It requires a keyword for encryption