Tech+ 2.3.1 Encryption Basics

Who used the Caesar cipher historically?

• Julius Caesar

• Alexander the Great

• Napoleon Bonaparte

• Genghis Khan

How does the Caesar cipher work?

• By deleting letters

• By shifting letters in the alphabet

• By adding numbers

• By reversing words

In the Caesar cipher example, what does the letter 'A' become with a shift of 3?

• D

• B

• C

• E

What is the plaintext word in the example provided?

• FRPSWLD

• COMPTIA

• ENCRYPT

• CIPHER

What must the reader know to decrypt a message encrypted with the Caesar cipher?

• The number of spaces shifted

• The original message

• The author's name

• The date of encryption.

What is the key to decoding an encrypted message?

• The algorithm

• The key

• The plaintext

• The ciphertext.

What is the character shift distance initially set to in the interactive tool?

• 0 characters

• 5 characters

• 10 characters

• 15 characters

What is the main challenge with modern encryption as mentioned in the text?

• It is too simple

• It is too slow

• It is too complex for even the fastest computers to break

• It is too expensive

What role do computers play in modern encryption?

• They make encryption keys

• They break encryption codes

• They send encrypted messages

• They receive encrypted messages.

What does the process of encrypting data involve according to the text?

• Making data readable

• Changing data to prevent unauthorized access

• Deleting data

• Copying data