WGU C839 Questions and Answers 100% Pass

WGU C839 Questions and Answers 100% Pass Symmetric Which encryption standard uses the same key to encrypt and decrypt messages? Skipjack Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? X.509 v3 What is the most commonly used format for certificates? Certificate revocation list (CRL) What is referenced to determine if a certificate has been revoked? Sender's public key What needs to be installed on end users' computers to allow them to trust applications that have been digitally signed by the developer? Public Certificate Which type of certificate must be certified by an authority to verify it with other participants? It requires a unique nonce. What is an attribute of the Rivest Cipher 4 (RC4) algorithm? Counter (CTR) 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? CEO's public key Which key would an administrator use to encrypt data so only the CEO can decrypt it?Digest What is the result of a hash function? Symmetric encryption What is used to efficiently encrypt large files? hvxfirgb An administrator needs to encrypt the following word with the Atbash cipher: security What is the correct ciphertext? Message Digest Algorithm 5 (MD5) Which cryptographic algorithm has a 128-bit hash size? Collision resistance Which characteristic makes a hashing function suitable for use in signature schemes? Partial-message collision Which attribute of a hashing function makes a birthday attack possible? SHA-1 Which hash algorithm produces a 160-bit output value? Previous generated ciphertext What does cipher block chaining (CBC) use with the key to encrypt subsequent blocks of plaintext? Electronic codebook (ECB) Which mode produces the same ciphertext from two identical plaintext blocks? Electronic codebook (ECB) Which encryption mode is least secure? P = E (K,C) What is the mathematical formula used for symmetric decryption? Rivest-Shamir-Adleman Which algorithm relies on factoring the product of large prime numbers?Pretty Good Privacy (PGP) 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?