WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO CRYPTOGRAPHY OA ACTUAL EXAM

WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO CRYPTOGRAPHY OA ACTUAL EXAM Practice questions for this set Learn 1 / 7 Study with Learn X.509 v3 Choose matching term 1 Which mode generates the key stream with a nonce and incrementing value? 2 What advantage do symmetric algorithms have over asymmetric algorithms 3 What is the most commonly used format for certificates? 4 What modes cannot be used to turn a block cipher into a stream cipher? (select 2) 12/15/24, 12:21 PM WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO … Terms in this set (129) Which encryption standard uses the same key to encrypt and decrypt messages? Symmetric Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? Skipjack What is the most commonly used format for certificates? X.509 v3 What is referenced to determine if a certificate has been revoked? Certificate revocation list (CRL) What needs to be installed on end users' computers to allow them to trust applications that have been digitally signed by the developer? Sender's public key Which type of certificate must be certified by an authority to verify it with other participants? Public Certificate Don't know? 12/15/24, 12:21 PM WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO … What is an attribute of the Rivest Cipher 4 (RC4) algorithm? It requires a unique nonce. Which mode generates the key stream with a nonce and incrementing value? Counter (CTR) Which mode is a stream algorithm that concatenates an incrementing value with a nonce? Counter (CTR) Which key would an administrator use to encrypt data so only the CEO can decrypt it? CEO's public key What is the result of a hash function? Digest What is used to efficiently encrypt large files? Symmetric encryption An administrator needs to encrypt the following word with the Atbash cipher: security What is the correct ciphertext? hvxfirgb Which cryptographic algorithm has a 128-bit hash size? Message Digest Algorithm 5 (MD5) 12/15/24, 12:21 PM WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO … Which characteristic makes a hashing function suitable for use in signature schemes? Collision resistance Which attribute of a hashing function makes a birthday attack possible? Partial-message collision Which hash algorithm produces a 160-bit output value? SHA-1 What does cipher block chaining (CBC) use with the key to encrypt subsequent blocks of plaintext? Previous generated ciphertext Which mode produces the same ciphertext from two identical plaintext blocks? Electronic codebook (ECB) Which encryption mode is least secure? Electronic codebook (ECB) What is the mathematical formula used for symmetric decryption? P = E (K,C) Which algorithm relies on factoring the product of large prime numbers? Rivest-Shamir-Adleman 12/15/24, 12:21 PM WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO … Which encryption technology is a serial combination of hashing, data compression, symmetric-key cryptography, and public key infrastructure (PKI) and can be used for encrypting texts, emails, files, and directories or for full disk encryption? Pretty Good Privacy (PGP) Which concept stipulates that algorithms should be openly shared and scrutinized, but keys must be absolutely secured? Kerckhoffs's principle Which encryption process minimizes known plaintext attacks against Advanced Encryption Standard (AES)? Randomizing the initialization vector What prevents a rainbow table attack during the encryption process? Salting 12/15/24, 12:21 PM WGU C839 OBJECTIVE ASSESSMENT 2 LATEST VERSIONS (VERSION A & B) /WGU C839 INTRODUCTION TO … Which factor increases the required number of attempts in a brute- force attack? Larger key size What is a vulnerability of the Data Encryption Standard (DES)? Key length is too short. Which block size does the Advanced Encryption Standard (AES) use? 128 Which block algorithm includes a provision for the decryption key kept in a key escrow? Skipjack What is the result of A|B and B|C? A|C How is X mod N if N = PQ represented in number theory? ( X mod P, X mod Q)