J2ME Interview Questions with Answers Page IV

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1. What is T9

T9 is a text input method for mobile phones and other small devices. It replaces the "multi-tap" input method by guessing the word that you are trying to

enter. T9 may be embedded in a device by the manufacturer. Note that even if the device supports T9, the Java implementation may or may not use it. Check

your documentation for details.

2. What is TDMA

Time Division Multiple Access (TDMA) is a second-generation modulation standard using bandwidth allocated in the 800 MHz, 900 MHz, and 1900MHz ranges.

3. What is Telematics

Telematics is a location-based service that routes event notification and control data over wireless networks to and from mobile devices installed in

automobiles. Telematics makes use of GPS technology to track vehicle latitude and longitude, and displays maps in LED consoles mounted in dashboards. It

connects to remote processing centers that turn provide server-side Internet and voice services, as well as access to database resources.

4. What is Tomcat

Tomcat is a reference implementation of the Java servlet and JavaServer Pages (JSP) specifications. It is intended as a platform for developing and

testing servlets.

5. What is UDDI

Universal Description, Discovery, and Integration (UDDI) is an XML-based standard for describing, publishing, and finding Web services. UDDI is a

specification for a distributed registry of Web services.

6. What is UMTS

Developed by Nortel Networks, Universal Mobile Telecommunications Service (UMTS) is a standard that will provide cellular users a consistent set of

technologies no matter where they are located worldwide. UMTS utilizes W-CDMA technology.

7. What is VLR

The Visitor Location Register (VLR) is a database that contains temporary information about subscribers.

8. What is WAE

The Wireless Application Environment (WAE) provides a application framework for small devices. WAE leverages other technologies such as WAP, WTP, and

WSP.

9. What is WAP

Wireless Application Protocol (WAP) is a protocol for transmitting data between servers and clients (usually small wireless devices like mobile

phones). WAP is analogous to HTTP in the World Wide Web. Many mobile phones include WAP browser software to allow users access to Internet WAP sites.

10.What is WAP Gateway

A WAP Gateway acts as a bridge allowing WAP devices to communicate with other networks (namely the Internet).

11. What is W-CDMA

Wideband Code-Division Multiple Access (W-CDMA), also known as IMT-2000, is a 3rd generation wireless technology. Supports speeds up to 384Kbps on a

wide-area network, or 2Mbps locally.

12. What is WDP

Wireless Datagram Protocol (WDP) works as the transport layer of WAP. WDP processes datagrams from upper layers to formats required by different

physical datapaths, bearers, that may be for example GSM SMS or CDMA Packet Data. WDP is adapted to the bearers available in the device so upper layers

don't need to care about the physical level.

13. What is WMA

The Wireless Messaging API (WMA) is a set of classes for sending and receiving Short Message Service messages. See also SMS.

14. What is WML

The Wireless Markup Language (WML) is a simple language used to create applications for small wireless devices like mobile phones. WML is analogous to

HTML in the World Wide Web.

15. What is WMLScript

WMLScript is a subset of the JavaScript scripting language designed as part of the WAP standard to provide a convenient mechanism to access mobile

phone's peripheral functions.

16. What is WSP

Wireless Session Protocol (WSP) implements session services of WAP. Sessions can be connection-oriented and connectionless and they may be suspended

and resumed at will.

17. What is WTLS

Wireless Transport Layer Security protocal (WTLS) does all cryptography oriented features of WAP. WTLS handles encryption/decryption, user

authentication and data integrity. WTLS is based on the fixed network Transport Layer Security protocal (TLS), formerly known as Secure Sockets Layer

(SSL).

18. What is WTP

Wireless Transaction Protocol (WTP) is WAP's transaction protocol that works between the session protocol WSP and security protocol WTLS. WTP chops

data packets into lower level datagrams and concatenates received datagrams into useful data. WTP also keeps track of received and sent packets and

does re-transmissions and acknowledgment sending when needed.