Which of the following security protocols is required by Robust Security Network (RSN)?

A.
IPSec

B.
SCP

C.
CCMP

D.
SSL

Explanation:
The security protocol required by Robust Security Network is CCMP. CCMP (Counter Mode with Cipher Block Chaining Message Authentication Code Protocol) is an IEEE 802.11i encryption protocol created to replace both TKIP, the mandatory protocol in WPA, and WEP, the earlier, insecure protocol. CCMP is a mandatory part of the WPA2 standard, an optional part of the WPA standard, and a required option for Robust Security Network (RSN) Compliant networks. CCMP is also used in the ITU-T home and business networking standard. CCMP, part of the 802.11i standard, uses the Advanced Encryption Standard (AES) algorithm. Unlike in TKIP, key management and message integrity is handled by a single component built around AES using a 128-bit key, a 128-bit block, and 10 rounds of encoding per the FIPS 197 standard.

Answer A is incorrect. Internet Protocol Security (IPSec) is a standard-based protocol that provides the highest level of VPN security. IPSec can encrypt virtually everything above the networking layer. It is used for VPN connections that use the L2TP protocol. It secures both data and password. IPSec cannot be used with Point-to-Point Tunneling Protocol (PPTP).

Answer D is incorrect. The Secure Sockets Layer (SSL) is a commonly-used protocol for managing the security of a message transmission on the Internet. SSL has recently been succeeded by Transport Layer Security (TLS), which is based on SSL. SSL uses a program layer located between the Internet’s Hypertext Transfer Protocol (HTTP) and Transport Control Protocol (TCP) layers. SSL is included as part of both the Microsoft and Netscape browsers and most Web server products. URLs that require an SSL connection start with https. instead of http..

Answer B is incorrect. The SCP protocol sends data in encrypted format. It is used to prevent potential packet sniffers from extracting usable information from data packets. The protocol itself does not provide
authentication and security; it relies on the underlying protocol, SSH, to provide these features. SCP can interactively request any passwords or passphrases required to make a connection to a remote host, unlike rcp that fails in this situation. The SCP protocol implements file transfers only. It does so by connecting to the host using SSH and there executes an SCP server (scp). The SCP server program is typically the same program as the SCP client. Fact What are the functions of Robust Security Network? Hide Robust Security Network (RSN) is a protocol for establishing secure communications between wireless clients and wireless access points (WAPs). It is a part of the 802.11i standard. The RSN protocol functions are as follows. The wireless client sends a probe request frame. As a response, the wireless access point (WAP) sends a probe response frame with an RSN information exchange (IE) frame. Now, the wireless client requests for authentication and sends an association request frame. As a response, the wireless access point (WAP) sends an association response frame.

Reference. http.//en.wikipediA.org/wiki/Robust_Security_Network