Encryption️ Beginner Quiz 3
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Encryption️ Beginner Quiz 3
1. What is a "Hash Function"?
An algorithm converting data into a fixed-size string.
A way to delete files permanently
A type of secure browser
2. Can a hash be reversed to see the original data?
Yes, with the right password
Yes, if the hash is long enough
No, hashing is a one-way function
3. What is "Integrity" in the context of encryption?
Ensuring only authorized people see the data
Ensuring that the data has not been changed or tampered with
Ensuring the server is always online
4. What is a "Collision" in hashing?
When two different inputs produce the same hash output
When a computer crashes during encryption
When a key is lost
5. What is a "Digital Signature"?
A scanned image of a handwritten signature
A password used for email
A mathematical technique to validate message authenticity
6. Which of these is a common hashing algorithm?
HTTP
SHA-256
FTP
7. What is "Salt" in the context of password hashing?
Random data added to a password before hashing
A type of encryption used for websites
A tool for making hashes faster
8. What is a "Message Authentication Code" (MAC)?
The address of a computer's network card
A short piece of information used to authenticate a message
A type of email software
9. Why should you never store passwords in plaintext?
It takes up too much disk space
Plaintext passwords are hard to type
Attackers can see everyone's password immediately
10. What is "Non-repudiation"?
Ensuring that a sender cannot later deny having sent a message
The ability to delete a message after it is read
Encrypting a message twice for extra safety
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