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INTRO TO CRYPTOGRAPHY WGU C839 MODULE 4 EXAM NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND DETAILED ANSWERS GRADED A | BRAND NEW!!! £12.30
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INTRO TO CRYPTOGRAPHY WGU C839
MODULE 4 EXAM NEWEST ACTUAL
EXAM WITH COMPLETE QUESTIONS
AND DETAILED ANSWERS GRADED A |
BRAND NEW!!!
Wi-Fi Encryption method that uses a stream cipher RC4 128 or
156 bits. - ✔✔✔ Correct Answer > WEP (Wired Equivalent
Privacy)
Uses a Pre-shared key mode
Designed for home and small office networks
Does not require an Authentication Server
Each wireless device authenticates using the same 256 bit key
Uses Temporal Key Integrity protocol (TKIP) a 128 bit per-
packet key and is dynamically generates a new key for each
packet - ✔✔✔ Correct Answer > WPA-Personal
This version of Wi-Fi encryption implements mandatory
elements of 802.11i and introduces CCMP (Counter Mode with
,Cipher Block Chaining Message Authentication Code Protocol) a
new AES-based encryption mode.
Has the optional use of Pairwise Master Key (PMK) caching and
opportunistic PMK caching which cache the results of 802.1X
authentications to improve access time. - ✔✔✔ Correct Answer
> WPA-2
Wi-Fi encryption standard that uses a stream cipher RC4 to
secure data and a CRC-32 checksum for error checking.
Standard versions use a 40 bit key with 24bit IV's to form a 64
bit encryption
128 bit version uses a 104 bit key with a 24 bit IV - ✔✔✔
Correct Answer > Wired Equivalent Privacy (WEP)
Designed for enterprise networks and requires a RADIUS
authentication server.
Extensible Authentication Protocol (EAP) is used for
authentication and has a variety of implementations such as
EAP-TLS and EAP-TTLS - ✔✔✔ Correct Answer > WPA-
Enterprise (WPS-802.1x Mode)
, Developed by Netscape and has been supplanted by TLS. Was
the preferred method used with HTTPS. - ✔✔✔ Correct Answer
> SSL (Secure Socket Layer)
This is a encrypting transmission protocol where the client and
server perform a negotiation using a handshaking procedure.
The client presents the server with a list of encryption and
hashing functions it can support.
The server picks the strongest encryption and hashing it can
also support and notifies the client of the chosen algorithms.
The server presents the client with an X.509 Certificate that the
client can verify through a CA.
The client uses the servers public key with random numbers to
generate a session key for a secure connection that is
decrypted with the servers private key.
This information is used to generate the key material used for
encryption and decryption - ✔✔✔ Correct Answer > TLS
(Transport Layer Security)
A virtual connect that emulates a direct network connection
between a user or site to a central location by creating a point-
to-point link.
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