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J2ME Interview Questions and Answers
What is ETSI ?
The European Telecommunications Standards Institute (ETSI)
is a non-profit organization that establishes
telecommunications standards for Europe.
What is FDMA ?
Frequency-division multiple-access (FDMA) is a mechanism
for sharing a radio frequency band among multiple users
by dividing it into a number of smaller bands.
What is Foundation Profile ?
The Foundation Profile is a J2ME profile specification
that builds on CDC. It adds additional classes and
interfaces to the CDC APIs but does not go so far as to
specify user interface APIs, persistent storage, or
application life cycle. Other J2ME profiles build on the
CDC/Foundation combination: for example, the Personal
Profile and the RMI Profile both build on the Foundation
Profile.
What is Generic Connection Framework ?
The Generic Connection Framework (GCF) makes it easy for
wireless devices to make network connections. It is part
of CLDC and CDC and resides in the javax.microedition.io
package.
What is GPRS ?
The General Packet Radio System (GPRS) is the next
generation of GSM. It will be the basis of 3G networks
in Europe and elsewhere.
What is GSM ?
The Global System for Mobile Communications (GSM) is a
wireless network system that is widely used in Europe,
Asia, and Australia. GSM is used at three different
frequencies: GSM900 and GSM1800 are used in Europe,
Asia, and Australia, while GSM1900 is deployed in North
America and other parts of the world.
What is HLR ?
The Home Location Register (HLR) is a database for
permanent storage of subscriber data and service
profiles.
What is HTTPS ?
Hyper Text Transfer Protocol Secure sockets (HTTPS) is a
protocol for transmission of encrypted hypertext over
Secure Sockets Layer.
What is i-appli ?
Sometimes called "Java for i-mode", i-appli is a Java
environment based on CLDC. It is used on handsets in NTT
DoCoMo's i-mode service. While i-appli is similar to
MIDP, it was developed before the MIDP specification was
finished and the two APIs are incompatible.
What is IDE ?
An Integrated Development Environment (IDE) provides a
programming environment as a single application. IDEs
typically bundle a compiler, debugger, and GUI builder
tog ether. Forte for Java is Sun's Java IDE.
What is iDEN ?
The Integrated Dispatch Enhanced Network (iDEN) is a
wireless network system developed by Motorola. Various
carriers support iDEN networks around the world: Nextel
is one of the largest carriers, with networks covering
North and South America.
What is i-mode ?
A standard used by Japanese wireless devices to access
cHTML (compact HTML) Web sites and display animated GIFs
and other multimedia content.
What is 3G ?
Third generation (3G) wireless networks will offer
faster data transfer rates than current networks. The
first generation of wireless (1G) was analog cellular.
The second generation (2G) is digital cellular,
featuring integrated voice and data communications.
So-called 2.5G networks offer incremental speed
increases. 3G networks will offer dramatically improved
data transfer rates, enabling new wireless applications
such as streaming media.
What is 3GPP ?
The 3rd Generation Partnership Project (3GPP) is a
global collaboration between 6 partners: ARIB, CWTS,
ETSI, T1, TTA, and TTC. The group aims to develop a
globally accepted 3rd-generation mobile system based on
GSM.
What is Java Card ?
The Java Card specification allows Java technology to
run on smart cards and other small devices. The Java
Card API is compatible with formal international
standards, such as, ISO7816, and industry-specific
standards, such as, Europay/Master Card/Visa (EMV).
What is JavaHQ ?
JavaHQ is the Java platform control center on your Palm
OS device.
What is JCP ?
The Java Community Process (JCP) an open organization of
international Java developers and licensees who develop
and revise Java technology specifications, reference
implementations, and technology compatibility kits
through a formal process.
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