Which of the following provides authentication, encryption and data integrity for wireless devices?

A.
PAP

B.
WAN

C.
WAP

D.
WTLS

Explanation:

WTLS provides authentication, encryption and data integrity for wireless devices.

Wireless Transport Layer Security (WTLS) is a security layer of WAP, which is specifically designed for
a wireless environment. It provides privacy, data integrity, and authentication for client-server
communications over a wireless network. WTLS ensures that a client and server are authenticated so
that wireless transactions remain secure and the connection is encrypted. WTLS is required because
a wireless network does not provide end-to-end security. Answer option B is incorrect. Wide Area
Network (WAN) represents a network spanned in a large geographic area. WANs connect two or
more
LANs separated by a large distance. To connect LANs in a WAN network, carrier networks such as
telephone companies provide the services. The basic types of connections or circuits WAN services
use are circuit-switched, cell-switched, packet-switched, and dedicated connections. Answer option
A is incorrect. Password Authentication Protocol (PAP) is the least sophisticated authentication
protocol, used mostly when a client calls a server running an operating system other than Windows.
PAP uses plain text passwords. Answer option C is incorrect. The Wireless Access Protocol (WAP) is a
technology used with wireless devices. The functionality of WAP is equivalent to that of TCP/IP. WAP
uses a smaller version of HTML called Wireless Markup Language (WML) to display Internet sites.
Reference: “http://en.wikipedia.org/wiki/Wireless_Transport_Layer_Security”