
Unit 1 5 Substitution
Quiz
•
Computers
•
University
•
Practice Problem
•
Hard
praveen K
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Caesar cipher?
A type of symmetric key cryptography
A type of encryption algorithm
A type of substitution cipher
A type of public key infrastructure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the Caesar cipher work?
Each letter in the plaintext is replaced with a random symbol
The letters in the plaintext are converted to their ASCII values and then shifted
The letters in the plaintext are rearranged in a random order
Each letter in the plaintext is shifted by a certain number of positions down or up the alphabet.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the Playfair cipher.
The Playfair cipher uses a 3x3 grid of numbers to encrypt messages.
The Playfair cipher involves shifting each letter in the message by a fixed number of positions in the alphabet.
The Playfair cipher uses a keyword to create a mixed alphabet which is then used to encrypt the message.
The Playfair cipher is a cryptographic technique that uses a 5x5 grid of letters to encrypt pairs of letters in a message.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the Rail fence cipher.
The Rail fence cipher rearranges plaintext letters in a zigzag pattern.
The Rail fence cipher rearranges plaintext letters in a random pattern.
The Rail fence cipher rearranges plaintext letters in a circular pattern.
The Rail fence cipher rearranges plaintext letters in a straight line.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Simple substitution cipher?
A method of encryption using word substitution
A method of encryption using number substitution
A method of encryption using letter substitution
A method of encryption using symbol substitution
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