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WGU C839 FLASH CARDS FOR OA
QUESTION & ANSWERS 1 00%
CORRECT UPDATED
Question :Which encryption standard uses the same key
to encrypt and decrypt messages?
Correct answer:Symmetric
Question :Which algorithm is designated as a Type 2
product by the National Security Agency (NSA)?
Correct answer:Skipjack
Question :What is the most commonly used format for
certificates?
Correct answer:X.509 v3
Question :What is referenced to determine if a certificate
has been revoked?
Correct answer:Certificate revocation list (CRL)
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Question :What needs to be installed on end users'
computers to allow them to trust applications that have been digitally signed by the developer?
Correct answer:Sender's public key
Question :Which type of certificate must be certified by
an authority to verify it with other participants?
Correct answer:Public Certificate
Question :What is an attribute of the Rivest Cipher 4
(RC4) algorithm?
Correct answer:It requires a unique nonce.
Question :Which mode generates the key stream with a
nonce and incrementing value?
Correct answer:Counter (CTR)
Question :Which mode is a stream algorithm that
concatenates an incrementing value with a nonce?
Correct answer:Counter (CTR)
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Question :Which key would an administrator use to
encrypt data so only the CEO can decrypt it?
Correct answer:CEO's public key
Question :What is the result of a hash function?
Correct answer:Digest
Question :What is used to efficiently encrypt large files?
Correct answer:Symmetric encryption
Question :An administrator needs to encrypt the following
word with the Atbash cipher: security What is the correct
ciphertext?
Correct answer:hvxfirgb
Question :Which cryptographic algorithm has a 128-bit
hash size?
Correct answer:Message Digest Algorithm 5 (MD5)
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Question :Which characteristic makes a hashing function
suitable for use in signature schemes?
Correct answer:Collision resistance
Question :Which attribute of a hashing function makes a
birthday attack possible?
Correct answer:Partial-message collision
Question :Which hash algorithm produces a 160-bit
output value?
Correct answer:SHA-1
Question :What does cipher block chaining (CBC) use
with the key to encrypt subsequent blocks of plaintext?
Correct answer:Previous generated ciphertext
Question :Which mode produces the same ciphertext from
two identical plaintext blocks?