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J2ME Interview Questions and Answers
What is Provisioning ?
In telecommunications terms, provisioning means to
provide telecommunications services to a user. This
includes providing all necessary hardware, software, and
wiring or transmission devices.
What is PSTN ?
The public service telephone network (PSTN) is the
traditional, land-line based system for exchanging phone
calls.
What is RMI
Remote method invocation (RMI) is a feature of J2SE that
enables Java objects running in one virtual machine to
invoke methods of Java objects running in another
virtual machine, seamlessly.
What is RMI OP
The RMI Optional Package (RMI OP) is a subset of J2SE
1.3's RMI functionality used in CDC-based profiles that
incorporate the Foundation Profile, such as the Personal
Basis Profile and the Personal Profile. The RMIOP cannot
be used with CLDC-based profiles because they lack
object serialization and other important features found
only in CDC-based profiles. RMIOP supports most of the
J2SE RMI functionality, including the Java Remote Method
Protocol, marshalled objects, distributed garbage
collection, registry-based object lookup, and network
class loading, but not HTTP tunneling or the Java 1.1
stub protocol.
What is RMI Profile
The RMI Profile is a J2ME profile specification designed
to support Java's Remote Method Invocation (RMI)
distributed object system. Devices implementing the RMI
Profile will be able to interoperate via RMI with other
Java devices, including Java 2, Standard Edition. The
RMI Profile is based on the Foundation Profile, which in
turn is based on CDC.
What is RMS
The Record Management System (RMS) is a simple
record-oriented database that allows a MIDlet to
persistently store information and retrieve it later.
Different MIDlets can also use the RMS to share data.
What is SDK
A Software Development Kit (SDK) is a set of tools used
to develop applications for a particular platform. An
SDK typically contains a compiler, linker, and debugger.
It may also contain libraries and documentation for
APIs.
What is SIM
A Subscriber Identity Module (SIM) is a stripped-down
smart card containing information about the identity of
a cell-phone subscriber, and subscriber authentication
and service information. Because the SIM uniquely
identifies the subscriber and is portable among
handsets, the user can move it from one kind of phone to
another, facilitating international roaming.
What is SMS
Short Message Service (SMS) is a point-to-point service
similar to paging for sending text messages of up to 160
characters to mobile phones.
What is SOAP
The Simple Object Access Protocol (SOAP) is an XML-
based protocol that allows objects of any type to
communicated in a distributed environment. SOAP is used
in developing Web Services.
What is SSL
Secure Sockets Layer (SSL) is a socket protocol that
encrypts data sent over the network and provides
authentication for the socket endpoints.
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.
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.
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.
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