C3 Crypto & PKI Review

Which feature of cryptography is used to prove a user's identity and prevent an individual from fraudulently reneging on an action?

• Confidentiality

• Nonrepudiation

• Obfuscation

• Authentication

Which algorithm encrypts and decrypts data using the same key?

• Hash algorithm

• Symmetric cryptographic algorithm

• Rivest-Shamir-Adleman algorithm

• Asymmetric cryptographic algorithm

Which of the following is a state of data, where data is transmitted across a network?

• Data in processing

• Data at rest

• Data in transit

• 3DES

John receives an encrypted document using asymmetric cryptography from Alex. Which process should Alex use along with asymmetric cryptography so that John can be sure that the received document is real, from Alex, and unaltered?

• Elliptic curve cryptography

• Digital signature algorithm

• Rivest-Shamir-Alderman

• Symmetric cryptography

Which cryptographic method should Susanne use to ensure that a document can be encrypted with a key and decrypted with a different key?

• Public

• Ephemeral

• Symmetric

• Asymmetric

Which attack sees an attacker attempt to determine the hash function's input strings that produce the same hash result?

• Known ciphertext attack

• Downgrade attack

• Collision attack

• Birthday attack

A new e-commerce startup with global operations is looking for a method to manage its supply-chain data for production. Instead of using bar codes, scanners, paper forms, and individual databases, making the system difficult to use, which method should be used to quickly track shipments?

• File and file system cryptography

• USB device encryption

• Full disk encryption

• Blockchain

Which of the following digital certificates are self-signed and do not depend on the higher-level certificate authority (CA) for authentication?

• Intermediate digital certificates

• Domain digital certificates

• Root digital certificates

• User digital certificates

John and Sarah are working for Star Alliance. John had to send certain confidential data and messages to Sarah online. The use of which of the following will ensure that the message's sender is, in fact, John?

• Digital signature

• Digital certificate

• Public key

• Physical signature

Which of the following is defined as a structure for governing all the elements involved in digital certificate management?

• PKI

• Web of trust model

• M-of-N control

• CA