Mastering Cryptography Concepts Quiz

Which of the following encryption algorithms is considered symmetric and uses a block cipher method?

• RSA

• AES

• ECC

• DSA

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DOK Level 2: Skill/Concept

Explain how a digital signature provides both authentication and integrity in a communication system.

• It encrypts the message content.

• It uses a hash function and a private key to sign the message.

• It uses symmetric encryption to secure the message.

• It relies on a shared secret key.

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DOK Level 3: Strategic Thinking

Which component of Public Key Infrastructure (PKI) is responsible for issuing digital certificates?

• Certificate Authority (CA)

• Registration Authority (RA)

• Certificate Revocation List (CRL)

• Key Escrow

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DOK Level 2: Skill/Concept

Describe a scenario where hashing techniques are crucial for data integrity.

• Encrypting a message for confidentiality.

• Verifying the integrity of a downloaded file.

• Securing a wireless network.

• Authenticating a user in a system.

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DOK Level 3: Strategic Thinking

Which cryptographic protocol is primarily used to secure web traffic?

• IPsec

• SSL/TLS

• SSH

• S/MIME

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DOK Level 2: Skill/Concept

Analyze the role of key management practices in maintaining the security of an encryption system.

• They ensure that keys are never changed.

• They involve the generation, distribution, and storage of keys.

• They focus solely on the encryption algorithm.

• They are only concerned with key length.

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DOK Level 3: Strategic Thinking

What is the primary purpose of a hash function in cryptography?

• To encrypt data for confidentiality.

• To provide a unique identifier for data.

• To compress data for storage.

• To generate a public key.

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DOK Level 2: Skill/Concept

Evaluate the effectiveness of using RSA for both encryption and digital signatures.

• RSA is only effective for encryption.

• RSA is effective for both encryption and digital signatures due to its asymmetric nature.

• RSA is only effective for digital signatures.

• RSA is not effective for either purpose.

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DOK Level 3: Strategic Thinking

Which of the following is a characteristic of elliptic curve cryptography (ECC)?

• It uses larger keys than RSA for the same level of security.

• It provides security with smaller key sizes compared to RSA.

• It is a symmetric encryption algorithm.

• It is primarily used for hashing.

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DOK Level 2: Skill/Concept

Discuss the importance of certificate revocation in a PKI system.

• It ensures that expired certificates are automatically renewed.

• It allows the removal of compromised or invalid certificates from the system.

• It prevents the issuance of new certificates.

• It is not necessary for maintaining security.

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DOK Level 3: Strategic Thinking