4CiphersCeasarAtbashRot13Affine

4CiphersCeasarAtbashRot13Affine

9th - 12th Grade

20 Qs

quiz-placeholder

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4CiphersCeasarAtbashRot13Affine

4CiphersCeasarAtbashRot13Affine

Assessment

Quiz

Computers

9th - 12th Grade

Practice Problem

Hard

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can the Atbash cipher be used in modern cryptography?

As a simple puzzle or educational tool to demonstrate basic encryption concepts.

As a secure method for encrypting sensitive data.

To create complex algorithms for data compression.

As a standard protocol for online banking security.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does frequency analysis help in breaking a Caesar Cipher?

By identifying the most common letters in the ciphertext

By shifting letters by a fixed number

By substituting letters with random symbols

By analyzing the length of the ciphertext

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a common attack method on the Affine cipher?

Brute force attack

Frequency analysis

Substitution attack

Transposition attack

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the inverse of 5 modulo 26, which is necessary for decryption in the Affine cipher?

15

21

18

24

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Compare the Atbash cipher with the Vigenère cipher in terms of complexity.

Atbash is more complex because it uses a single alphabet.

Vigenère is more complex because it uses a keyword and a polyalphabetic system.

Both ciphers are equally complex and have the same level of security.

Atbash is simpler because it only substitutes letters with their reverse counterparts.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of the ROT13 cipher?

To encrypt data using a complex algorithm

To shift each letter by 13 places in the alphabet

To replace vowels with numbers

To reverse the order of letters in a message

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe a scenario where a Caesar Cipher might still be useful today despite its security limitations.

Teaching basic cryptography concepts

Encrypting sensitive government communications

Securing online banking transactions

Protecting personal data in cloud storage

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