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NEW QUESTION 37 Which one of the following wireless standards uses the Advanced Encryption Standard (AES) using the Counter Mode-Cipher Block Chaining (CBC)-Message Authentication Code (MAC) Protocol (CCMP)?

• A. WEP
• B. WPA
• C. WEP2
• D. WPA2

Answer: D Explanation: WPA2 https://en.wikipedia.org/wiki/Wi-FiProtectedAccess#WPA2 WPA2 use the Counter Mode-Cipher Block Chaining (CBC)-Message Authentication Code (MAC) Protocol (CCMP).   NEW QUESTION 38 What size block does AES work on?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A Explanation: 128 https://en.wikipedia.org/wiki/AdvancedEncryptionStandard Rijndael is a family of ciphers with different key and block sizes. For AES, NIST selected three members of the Rijndael family, each with a block size of 128 bits, but three different key lengths: 128, 192 and 256 bits.   NEW QUESTION 39 DES has a key space of what?

• A. 2^128
• B. 2^56
• C. 2^64
• D. 2^192

Answer: B Explanation: 2^56 https://en.wikipedia.org/wiki/DataEncryptionStandard The Data Encryption Standard (DES) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for applications, it has been highly influential in the advancement of cryptography.   NEW QUESTION 40 A cryptographic hash function which uses a Merkle tree-like structure to allow for immense parallel computation of hashes for very long inputs. Authors claim a performance of 28 cycles per byte for MD6-256 on an Intel Core 2 Duo and provable resistance against differential cryptanalysis.

• A. TIGER
• B. MD6
• C. MD5
• D. GOST

Answer: B Explanation: MD6 https://en.wikipedia.org/wiki/MD6 The MD6 Message-Digest Algorithm is a cryptographic hash function. It uses a Merkle tree-like structure to allow for immense parallel computation of hashes for very long inputs. Authors claim a performance of 28 cycles per byte for MD6-256 on an Intel Core 2 Duo and provable resistance against differential cryptanalysis.[2] The source code of the reference implementation was released under MIT license. Speeds in excess of 1 GB/s have been reported to be possible for long messages on 16-core CPU architecture. In December 2008, Douglas Held of Fortify Software discovered a buffer overflow in the original MD6 hash algorithm's reference implementation. This error was later made public by Ron Rivest on 19 February 2009, with a release of a corrected reference implementation in advance of the Fortify Report.   NEW QUESTION 41 ......