Apache Activemq Interview Questions

Here are JMS interview questions and answers for fresher as well experienced candidates to get their dream job.

JMS means Java Messaging Service. It is the new standard for inter client communication. It allows the J2EE application component to create, send, read and receive the messages.

What is Activemq?Apache ActiveMQ is message-oriented middleware (MOM), a category of software that sends messages between applications. Using standards-based, asynchronous communication, ActiveMQ allows loose coupling of the elements in an IT environment, which is often foundational to enterprise messaging and distributed applications.ActiveMQ translates messages from sender to receiver. It can connect multiple clients and servers and allows messages to be held in queue, instead of requiring both the client and server to be available simultaneously in order to communicate.

  • Supports a variety of Cross Language Clients and Protocols from Java, C, C++, C#, Ruby, Perl, Python, PHP.
  • Supports many advanced features such as Message Groups, Virtual Destinations, Wildcards and Composite Destinations.
  • Can be used as an in memory JMS provider, ideal for unit testing JMS.
  • Supports pluggable transport protocols such as in-VM, TCP, SSL, NIO, UDP, multicast, JGroups and JXTA transports.
  • Supports very fast persistence using JDBC along with a high performance journal.
  • 22) What are the types of messages that are supported by JMS?

    The types of messages that are supported by JMS are

  • Stream Messages
  • Text Messages
  • Map Messages
  • Bytes Messages
  • Object Messages
  • 3) What do you mean by Synchronous and Asynchronous type of messaging?

    Synchronous: In this type of messaging, client waits for the server to respond to a message. Ex: Telephone call, two way radio communication.

    Asynchronous: In this type of messaging, client does not wait for a message from the server, but automatically an event is created to trigger a message from a server. Ex: email, text messaging, blog posting.

    In order to take their companies to higher notches, companies are adopting ActiveMQ as their source for communication. If you are looking for a job as a programmer or coder then ActiveMQ is one language that will come in handy. Recruiters ask a combination of tricky and easy ActiveMQ interview questions that can sometimes leave your mind–boggling. Read below some of the most frequent and important ActiveMQ interview questions to not only get an idea about the programming language and get your dream job!

    The architecture of Mule is such that it is designed to deliver achievable programming setup for integration of applications between the database and an operating system. However, mule does not support any kind of system for native messaging, thus it is generally used alongside with ActiveMQ. In order to incorporate Mule with ActiveMQ, the user is required to introduce different and unique frameworks to define various boundaries for connectivity.

    The customer using the application such as the JavaBeans firstly parts and segments the web in order to be able to send or receive JMS message synchronously. In addition to that, the customer using the application can also likewise get message non – concurrently. With the assistance of message-driven beans, JMS supplier can alternatively execute the preparation of messages. The message-driven beans are a kind of big business bean that empowers the offbeat utilization of various kinds of messages. The task of sending and accepting message is completed and is in conveyed, which then permits JMS tasks and database to get inside a solitary exchange.

    JMS is an acronym for Java Message Service. It is an application program interface (API) primarily produced by Sun Microsystems. These applications support a variety of formal communications also known as messaging, especially between different computers within a network. The main function provided by JMS is that it acts as a common interface for standard messaging protocols and in addition, acts as a special messaging facility in order to support various Java programs.

    In this age of business expansion and advancement in technology, many big organizations are always looking for methods to increase their business. One main factor governing the expansion of any business is communication. If managers and other office staff are not able to communicate among different clients, then there will be no plausible way for their business to increase its revenue. ActiveMQ is a boon in terms of open-source communication software that only allows rapid and effective communication between the client and the broker, but also provides multitudes of efficient features that will always attract more clients.

    ActiveMQ interview Question and Answers | ActiveMQ tutorial | ActiveMQ Question ActiveMQ FAQ Answer

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