In a wireless General Packet Radio Services (GPRS) Virtual Private Network (VPN) application, which
of the following security protocols is commonly used?
A.
SSL
B.
IPSEC
C.
TLS
D.
WTP
Explanation:
An example is the use of a GPRS-enabled laptop that connects to a corporate intranet via a VPN. The
laptop is given an IP address and a RADIUS server authenticates the user. IPSEC is used to create the
VPN. As background, GPRS is a second-generation (2G) packet data technology that is overlaid on
existing Global System for Mobile communications (GSM). GSM is the wireless analog of the ISDN
landline system. The key features of GPRS are that it is always on line (no dial-up needed), existing
GSM networks can be upgraded with GPRS, and it can serve as the packet data core of third
generation (3G) systems. Answers SSL and TLS are similar security protocols that are used on the
Internet side of the Wireless Application Protocol (WAP) Gateway. For answer WTP is the Wireless
Transaction Protocol that is part of the WAP suite of protocols. WTP is a lightweight, messageoriented, transaction protocol that provides more reliable connections than UDP, but does not have
the robustness of TCP.