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Introduction to Cryptography and Data Protection

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Introduction to Cryptography and Data Protection

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Questions and Answers

What is the purpose of Cryptography according to the text?

To modify and forge data for personal benefit
To thwart hackers and prevent security attacks
To enhance data processing systems of an organization
To protect data during its journey between computers (correct)

Which of the following is NOT an aspect of information security as mentioned in the text?

Security mechanism
Data storage management (correct)
Security attack
Security service

What is the role of a Security Mechanism?

To increase the risk of security attacks
To enhance the security of data processing systems (correct)
To compromise the security of information
To define security requirements for an organization

What does Network Security primarily aim to protect?

Data during their transmission between computers (B) Signup and view all the answers

In the context of information security, what is a Security Service's main function?

Enhancing the security of data processing systems (D) Signup and view all the answers

Which aspect helps the manager define security requirements for an organization effectively?

Security mechanism (B) Signup and view all the answers

What is the main purpose of cryptography?

To transform an intelligible message into an unintelligible one (D) Signup and view all the answers

What is the difference between encipher and decipher processes?

Encipher involves encrypting the message, while decipher involves decrypting the message. (B) Signup and view all the answers

What is the role of a key in cryptography?

To secure the encryption and decryption processes (D) Signup and view all the answers

What distinguishes symmetric key encryption from public key encryption?

In symmetric key encryption, sender and receiver use different keys; in public key encryption, they use the same key. (D) Signup and view all the answers

What is the difference between a block cipher and a stream cipher?

Block cipher processes blocks of elements at a time, while stream cipher processes input continuously. (B) Signup and view all the answers

What is the objective of cryptanalysis?

To convert encrypted messages back into plaintext without knowing the key (A) Signup and view all the answers