Princess Nora Bint Abdul Rahman University
College of Computer and Information Systems
Network and Data Communication Department
Network Security ( NET 536)
Sheet#4 ( Digital Signature)
Student Name:
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Describe the main purpose and role of the Wireless Applications Protocol (WAP).
What function does a protocol play within a network? Describe the main components
of the WAP suite of architecture standards. Why is a WAP network architecture
described as a client-server? Explain the role of gateways and emulators within the
WAP domain. Explain the relationship between WAP and the Wireless Mark-up
Language (WML).
Answer:
Wireless Application Protocol(WAP) is a secure specification that allows users to
access information instantly via handheld wireless devices such as mobile phones, pagers, twoway radios, smartphones and communicators. WAP supports most wireless networks. These
include CDPD, CDMA, GSM, PDC, PHS, TDMA, FLEX, ReFLEX, iDEN, TETRA, DECT, DataTAC, and
Mobitex .Also support all operating systems and specifically engineered for handheld devices
include PalmOS, EPOC, Windows CE, FLEXOS, OS/9, and JavaOS. A protocol is a formal
description of digital message formats and the rules for exchanging those messages in or
between computing systems and in telecommunications. Protocols may include signaling,
authentication and error detection and correction capabilities. A protocol describes the syntax,
semantics, and synchronization of communication and may be implemented in hardware or
software, or both. WAP suite architecture: Wireless Application Environment (WAE) Wireless
Session Protocol (WSP) Wireless Transaction Protocol (WTP) Wireless Transport Layer Security
(WTLS) Wireless Datagram Protocol (WDP) *** Any Wireless Data Network *** The
client�Vserver model is a computing model that acts as distributed application which partitions
tasks or workloads between the providers of a resource or service, called servers, and service
requesters, called clients.[1] Often clients and servers communicate over a computer network
on separate hardware, but both client and server may reside in the same system. A server
machine is a host that is running one or more server programs which share their resources with
clients. A client does not share any of its resources, but requests a server's content or service
function. Clients therefore initiate communication sessions with servers which await incoming
requests. Gateway is a computer or a network that allows or controls access to another
computer or network In computing, an emulator is hardware or software or both that duplicates
(or emulates) the functions of a first computer system in a different second computer system, so
that the behavior of the second system closely resembles the behavior of the first system.
Princess Nora Bint Abdul Rahman University
College of Computer and Information Systems
Network and Data Communication Department
Network Security ( NET 536)
Sheet#4 ( Digital Signature)
Wireless Markup Language (WML), based on XML, is a markup language intended for devices
that implement the Wireless Application Protocol (WAP) specification, such as mobile phones. It
provides navigational support, data input, hyperlinks, text and image presentation, and forms,
much like HTML (HyperText Markup Language). It preceded the use of other markup languages
now used with WAP, such as HTML itself, and XHTML.