Cryptography Quiz

Multiple Choice

1. What is Cryptography?

   • A. The study of codes and ciphers
   • B. The study of computer networks
   • C. The study of encryption and decryption
   • D. The study of computer security

2. What is the purpose of Cryptography?

   • A. To protect data from unauthorized access
   • B. To store data securely
   • C. To encrypt data
   • D. To decode data

3. What is the difference between symmetric and asymmetric encryption?

   • A. Symmetric encryption uses the same key for encryption and decryption, while asymmetric encryption uses different keys
   • B. Symmetric encryption is faster than asymmetric encryption
   • C. Symmetric encryption is more secure than asymmetric encryption
   • D. Asymmetric encryption is more secure than symmetric encryption

4. What is a hash function?

   • A. A function used to encrypt data
   • B. A function used to store data securely
   • C. A function used to convert plaintext into ciphertext
   • D. A function used to convert data into a fixed-length value

True/False

1. Cryptography is the study of computer security.

   • True
   • False

2. Symmetric encryption is faster than asymmetric encryption.

   • True
   • False

3. A hash function is used to convert data into a fixed-length value.

   • True
   • False

Fill-in-the-Blank

1. Cryptography is the study of ___________ and ___________.

2. Symmetric encryption uses the same key for ___________ and ___________.

3. A ___________ function is used to convert data into a fixed-length value.

Short Answer

1. What is the purpose of Cryptography?

2. What is the difference between symmetric and asymmetric encryption?

3. What is a hash function?

Answer Key

1. A. The study of codes and ciphers
2. A. To protect data from unauthorized access
3. A. Symmetric encryption uses the same key for encryption and decryption, while asymmetric encryption uses different keys

4. D. A function used to convert data into a fixed-length value

5. False

6. True

7. True

8. Codes, ciphers

9. Encryption, decryption

10. Hash

.

Cryptography Practice Sheet

1. What is Cryptography?

Answer: Cryptography is the practice of using mathematical techniques to encrypt and decrypt data for secure communication.

1. What is the purpose of Cryptography?

Answer: The purpose of Cryptography is to protect information from unauthorized access and manipulation.

1. What is the difference between encryption and decryption?

Answer: Encryption is the process of transforming data into an unreadable format, while decryption is the process of transforming encrypted data back into its original form.

1. What is a cryptographic algorithm?

Answer: A cryptographic algorithm is a mathematical formula used to encrypt and decrypt data.

1. What are the two main types of cryptographic algorithms?

Answer: The two main types of cryptographic algorithms are symmetric and asymmetric algorithms.

1. What is a symmetric algorithm?

Answer: A symmetric algorithm is a type of cryptographic algorithm that uses the same key to both encrypt and decrypt data.

1. What is an asymmetric algorithm?

Answer: An asymmetric algorithm is a type of cryptographic algorithm that uses two different keys to encrypt and decrypt data.

1. What is a hash function?

Answer: A hash function is a type of cryptographic algorithm that takes an input of any size and produces an output of a fixed size.

1. What is the difference between a hash function and an encryption algorithm?

Answer: A hash function is used to generate a unique identifier for a given input, while an encryption algorithm is used to secure data by transforming it into an unreadable format.

1. True or False: Cryptography is used to protect data from unauthorized access.

Answer: True

Answer Key: 1. Cryptography is the practice of using mathematical techniques to encrypt and decrypt data for secure communication. 2. The purpose of Cryptography is to protect information from unauthorized access and manipulation. 3. Encryption is the process of transforming data into an unreadable format, while decryption is the process of transforming encrypted data back into its original form. 4. A cryptographic algorithm is a mathematical formula used to encrypt and decrypt data. 5. The two main types of cryptographic algorithms are symmetric and asymmetric algorithms. 6. A symmetric algorithm is a type of cryptographic algorithm that uses the same key to both encrypt and decrypt data. 7. An asymmetric algorithm is a type of cryptographic algorithm that uses two different keys to encrypt and decrypt data. 8. A hash function is a type of cryptographic algorithm that takes an input of any size and produces an output of a fixed size. 9. A hash function is used to generate a unique identifier for a given input, while an encryption algorithm is used to secure data by transforming it into an unreadable format. 10. True