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WGU C839 OA: Questions With Verified Solutions (By Expert)
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WGU C839 OA: Questions With Verified Solutions (By Expert)
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WGU C839 OA: Questions With Verified Solutions (ByExpert)
DES Right Ans - 64 Bit Block - 56 Bit Key - 16 Rounds
AES Right Ans - 128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds
BlowFish Right Ans - 64 Bit Block - 32 thru 448 Bit Key - 16 Rounds
TwoFish Right Ans - 128 Bit Block - 1 thru 256 Bit Key - 16 Rounds
Serpent Right Ans - 128 Bit Block 128, 192, 256 Bit Key - 32 Rounds
SkipJack Right Ans - 64 Bit Block - 80 Bit Key - 32 Rounds
IDEA Right Ans - 64 Bit Block - 128 Bit Key - 8.5 Rounds
Symmetric Block Ciphers Right Ans - DES - AES - BlowFish - TwoFish -
Serpent - SkipJack - IDEA
Symmetric Block Ciphers with 64 Bit Block Size Right Ans - DES - BlowFish
- SkipJack - IDEA
Symmetric Block Ciphers with 128 Bit Block Size Right Ans - AES - TwoFish
- Serpent
Symmetric Block Ciphers with 128, 192, 256 Bit Key Size Right Ans - AES -
Serpent
Symmetric Block Ciphers with 16 Rounds Right Ans - DES - BlowFish -
TwoFish
Symmetric Block Ciphers with 32 Rounds Right Ans - Serpent - SkipJack
RC4 Right Ans - 1 thru 2048 Bit Key Size & 1 Round (40 bit minimum
recommended)
FISH Right Ans - Uses Lagged Fibonacci pseudorandom number generator
, PIKE Right Ans - Revised version of FISH to address known plaintext attack
vulnerabilities
Symmetric Stream Ciphers Right Ans - RC4 - Fish - Pike
Asymmetric Encryption Algos Right Ans - RSA - ECC - El Gamal - DSA
RSA Right Ans - Leverages prime number characteristics, 1024-4096 bit
variable key size, 1 round. Uses Trapdoor function to enable use for
encryption and digital signatures. One-way trapdoor functions can be inverted
with knowledge of trapdoor factorization information.
ECC Right Ans - Leverages discrete logarithm characteristics
El Gamal Right Ans - Used in recent versions of PGP
DSA Right Ans - A Federal Information Processing Standard for digital
signatures (FIPS 186)
Hash Algos Right Ans - MD5 - SHA1 - SHA256 - FORK256 - RIPEMD160 -
GOST - TIGER
MD5 Right Ans - 128 Bit Hash Value
SHA1 Right Ans - 160 Bit Hash Value
SHA256 Right Ans - 256 Bit Hash Value
FORK256 Right Ans - 256 Bit Hash Value
GOST Right Ans - 256 Bit Hash Value
TIGER Right Ans - 192 Bit Hash Value
Key Exchange Algos Right Ans - Diffie Hellman (DH) - Menezes-Qu-
Vanstone (MQV) - Key Exchange Algorithm (KEA) - Elliptic Curve DH (ECDH)
RSA Encryption Formula Right Ans - C = Me % n
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