Which of the following is an intermediate network similar to RSN that supports legacy security such as WEP within the same BSS?
A.
WPA2
B.
VPN
C.
WPA
D.
TSN
Explanation:
The transition Security Network (TSN) is an element of 802.11i authentication and encryption algorithms. It is an intermediate network similar to RSN that supports legacy security such as WEP within the BSS. It uses transition security network protocol that is used to authenticate clients in a most secure way.Answer C is incorrect. WPA stands for Wi-Fi Protected Access. It is a wireless security standard. It provides better security than WEP (Wired Equivalent Protection). Windows Vista supports both WPA-PSK and WPAEAP. Each of these is described as follows. WPA-PSK. PSK stands for Preshared key. This standard is meant for home environment. WPA-PSK requires a user to enter an 8-character to 63-character passphrase into a wireless client. The WPA converts the passphrase into a 256-bit key. WPA-EAP. EAP stands for Extensible Authentication Protocol. This standard relies on a back-end server that runs Remote Authentication Dial-In User Service for user authentication. Note. Windows Vista supports a user to use a smart card to connect to a WPA-EAP protected network.
Answer A is incorrect. WPA2 is an updated version of WPA.This standard is also known as IEEE 802.11i. WPA2 offers enhanced protection to wireless networks than WPA and WEP standards. It is also available as WPA2-PSK and WPA2-EAP for home and enterprise environment respectively.
Answer B is incorrect. A virtual private network (VPN) is a form of wide area network (WAN) that supplies network connectivity over a possibly long physical distance. A virtual private network is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or individual users with secure access to their organization’s network. A virtual private network can be contrasted with an expensive system of owned or leased lines that can only be used by one organization. The goal of a VPN is to provide the organization with the same capabilities, but at a much lower cost. A VPN works by using the shared public infrastructure while maintaining privacy through security procedures and tunneling protocols such as the Layer Two Tunneling Protocol (L2TP). In effect, the protocols, by encrypting data at the sending end and decrypting it at the receiving end, send the data through a tunnel that cannot be entered by data that is not properly encrypted. An additional level of security involves encrypting not only the data, but also the originating and receiving network addresses. Fact What is RSN? Hide Robust Security Network (RSN) is an element of 802.11i authentication and encryption algorithms to be used for communications between WAPs and wireless clients. It works as a protocol. It is used for establishing secure communications over an 802.11 wireless network.
Reference. http.//support.apple.com/kb/TA24578?viewlocale=en_US