22 December, 2020
Are you looking for a new opportunity as an IBM WebSphere Message Broker developer? Then you need a bunch of interview questions, which helps you to clear the interview.
Here, tekslate experts compiled IBM Websphere Message Broker Interview Question and Answers for freshers and experienced candidates. We collected in such a way we covered all IBM WebSphere Message Broker Interview questions from basic to advanced concepts where you can clearly understand.
Start reading and crack your interview and acquire your dream job with the right salary package in this tech industry.
Ans: Following are three IBM/WMB components:
Runtime: The broker runtime is the primary processing segment to which improvement aircraft are deployed.
Development: This toolkit is utilized for the development of aircraft and other message flows.
Administration: Message Broker Explorer is an organization tool used to enable flow monitoring, deploys, new execution groups, or create brokers. WMB V8 gives a WebUI device to represent the broker runtime or assets deployed in a portal.
Ans: There is no database requirement; the item doesn't need a database for internal operations. You may have database hubs or databases for other operations; thus, Message Broker gives functionalities to interface with the application database.
Ans: Features of Message Brokers are accompanying in the following way:
Ans: Configuration manager connects to the broker and deploys the information onto the broker.
Ans: To create a broker from Command Prompt, you can use the createbroker command.
Ans: Following are the default properties of Mq Input nodes:
Ans: Following nodes are used to change the message in the flow:
Ans: Parallel Processing is the difference between MB and ICS.
Ans: EAI means Enterprise Application Integration which integrates more than one application and process together.
Tools Used: Tibco, Webmethods, Web message brokers, ICS.
Ans: Group of brokers that correspond to a particular configuration manager develop a Broker Domain.
Ans: Following are the 6 Built-in nodes in the MB toolkit:
Ans: Using the “CALL” Keyword you can call the method or function in the ESQL Coding.
Ans: Following are the few message formats that Mb support:
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Ans: An execution group is a named collection of message streams that have been relegated to a broker. The broker upholds a detachment level between message streams in particular execution bunches by guaranteeing that they execute in independent location spaces or as exceptional cycles.
Ans: The root is used in the Database content changing and Filter node. OutputRoot is used in the ESQL code for a Compute node that produces new output information based on the input information.
Ans: The User Name Server is an arbitrary runtime segment that gives authentication of users and groups doing publish/subscribe operations.
Ans: To see the error log files in the broker, the windows event viewer is where the Websphere message broker writes the records.
Ans: Following are the MB toolkits:
In Administration Perspective we deploy the information flow.
Ans: Following are different ways to give the inputs without using the mqinput nodes:
Ans: It shows “ 0” and the error message is “ Unset mandatory ‘Qname name property’ on node ‘MQInput’ “.
Ans: Yes, it is possible to set properties of nodes from the right-click and setting the properties: Windows shows a view of basic properties.
Ans: We have a Mbinputnode interface to implement to create an input custom node.
Broker: A broker is a bunch of execution methods that endure message flow to transform, enrich in-flight, and route.
BAR: Flows and sets that are to be conveyed are stuffed and assigned to the configuration manager.
Execution group: An execution bunch is a named grouping of information flows allowed to a broker. The broker authorizes a level of disengagement between information flows in particular execution bunches by guaranteeing that they execute in isolated location spaces or exciting cycles.
SCADA: The SCADAInput hub is utilized to get messages from customers that interface with the dealer across the WebSphere MQ Telemetry Transport. SCADA gadget customers use the MQIsdp convention to send messages, which are changed over by the SCADAInput hub into an arrangement perceived by WebSphere Message Broker. The hub additionally builds up the preparing climate for these messages.
Components Of BROKER: Broker, Configuration administrator, User name service.
Ans: The ResetContentDescriptor node is used to request the message is rephrased by a different parser.
Ans: A broker schema is a symbol of scope that defines the uniqueness of the names of resources defined. The resources are ESQL files, message flows, and mapping files.
Ans: Cobol Copybook in Mb is used either for mqsicreatemsgdefs command-line utility and the new message definition wizard.
Ans: Following are the various types of messages:
Ans: MQPUT ( BUFFER, MQMD, MQSTATE, MQPMO ): Adds information to the queue. The buffer cannot be more than 32767 bytes, but that restriction does not apply if you use the EGL to add a statement. MQPUT1(MQSTATE, MQOD, MQMD, MQPMO, BUFFER): Opens a queue, writes a piece of single information, and closes the queue.
Ans: CVS means concurrent version system; it is a repository that stores the previous version.
Ans: Following are the various types of Queues in MQ:
Ans: Any work that has been finished utilizing the respective information source in a message stream (counting any activities taken in the hub) is submitted, paying little heed to the message stream's ensuing achievement or disappointment.
Ans: A correlation name is a field reference that recognizes a definite starting point in the logical information tree and is utilized in field references to define a conventional part of the tree format.
Ans: Utilize the Input node as an In terminal for an embedded information flow(a subflow). The MQInput node gets a message from a WebSphere MQ message queue described by the queue administrator's broker. It is the primary node of your message flow.
Ans: WebSphere MQ stimulates the communication between applications by sending and receiving information through messaging queues. WebSphere MQ gives a reliable and secure layer of a carrier for transferring information unaltered as messages between applications, yet it doesn't know about the messages' substance.
WebSphere Message Broker is developed to increase WebSphere MQ, and it can understand the content of each message that it passes through the Broker.
Message Broker can do the accompanying:
Matches and routes interchange between the services.
Converts between various transport rules.
Changes message formats among service and requestor.
Defines and distributes business events from disparate sources.
Ans: Websphere message broker offers various types of assistance because message broker to permit you to:
Route a message to various destinations, utilizing rules that follow up on the content of at least one of the fields in the message or message header.
Change a message to ensure that applications are utilizing various formats that can trade messages in their configurations.
Store a message, or part of a message, in an information base.
Obtain a message, or part of a message, from a database.
Alter the substance of a message, for instance, by adding information separated from a database.
Ans: If the configuration manager is down, then the running broker is also down.
Ans: The User Name Server interfaces with operating system facilities to give information about legitimate users and groups in a broker domain.
Ans: No, it is not possible for a Single Queue Manager to have two brokers.
Ans: A broker schema is a representative space that characterizes the extent of the uniqueness of the names of sources described inside it. The sources are message streams, ESQL documents, and mapping records.
Ans: Broker Archive or BAR is a bundle of message streams, Xslts, Java utility classes, message sets, etc., that are assumed to be conveyed by the broker.
Ans: The mqsiapplybaroverride command is used to replace configurable conditions in the broker archive (BAR) with new values that you define in a properties file.
Ans: Following node in WMB support Aggregation:
Ans: To hit or call any backend framework from a message broker, we need to have URLs or Queues, and we store all the information in our database. At runtime, we can recover those details to create a call to the Host System.
Ans: We use HTTP and SOAP input nodes to connect with WEB services, to choose which node to utilize when we can consider the following points:
Ans: Message Sets are used for message modeling in WMB for various types of messages. We can use message sets to authenticate incoming messages to verify if it is in the desired format.
Ans: Asynchronous Scenario: When we are making a request and not expecting a response or a reply, and continue to make another request. For this situation, our Message flow doesn't wait for a response from the backend framework and process another incoming request.
We can accomplish this by utilizing MQ Nodes, as MQ output and MQGet hubs, to place messages in the output queue and process other incoming messages.
Ans: Ordinary, EXTERNAL, and SHARED
These variables have a lifetime of just one message going through the node and initialize again for the next message.
These variables are proclaimed with a key phrase 'External'.
Declare EXTNVAR EXTERNAL CHARACTER:
These factors are declared with a key phrase, 'SHARED.'
Ans: IIB/WMB installation includes installing a Broker segment, the Toolkit, and Message Broker. On Windows, all the three elements can be installed utilizing Windows Launchpad furnished with the product. On Unix stages, the installment can be performed through an installment wizard or in quiet mode. On z/OS, the installment is performed utilizing SMP/E.
Ans: The environment tree varies from the local environment tree in that an isolated occurrence of it is kept up all through the message stream. On the off chance that you incorporate a Compute node, a Mapping node, or a JavaCompute node in your message stream, you don't need to determine whether you need the environment tree to be remembered for the output message. The environment tree is incorporated, and the whole substance of the information environment tree is held in the output environment tree. Any progressions that you make are accessible to resulting hubs in the message stream and previous hubs.
Ans: IIB/WMB provides a default configuration. This can be begun through the Toolkit Welcome screen. The default setup wizard makes a broker and all the assets required.
Ans: A broker can start the accompanying process to get started, and they can be found in Task Manager (on Windows) and additionally ps listing(on UNIX's). On z/OS, these methods run under the USS.
bipservice – This is a bootstrap method that begins the broker runtime.
bipbroker- This entire organization that deals with the broker runtime.
biphttplistener – This is the http server method that gives HTTP and SOAP functionality in Message Broker
DataFlowEngine- This is the Execution Group method that runs message stream strings. Each message stream runs in this cycle as a string.
Ans: A message definition record contains the messages, components, types, and groups that make up a message model inside a message set. Each message set needs one message definition record to describe its messages. Message definition records utilize the XML Schema language to describe the consistent configuration of at least one message.
Ans: A multipart message contains more than one message inside its structure. The enclosed message is also known as an implanted message. A multipart message should have a complex type or group, with its Composition characteristic set to Message.
Ans: The PROPAGATE proclamation is utilized to create numerous output messages in the Compute hub. The output messages may have the same or diverse message content. You can likewise send output messages to other output terminals of the Compute hub.
Ans: Most message purposes are not self-characterizing, and a parser should have access to a predefined model that depicts the message if it is to parse the message effectively. WebSphere Message Broker utilizes a message model to demonstrate a message format.
Ans: If your messages are self-characterizing and don't need displaying, message demonstrating has the accompanying preferences:
Ans: You can create a message model by utilizing the accompanying techniques:
Ans: The Sequence node allows you to receive messages from an input reference and process the order in which each group's messages arrived.
Ans: Business level monitoring can be determined in IIB/WMB message streams that empowers the various hubs in the message stream to produce events when processing messages. These events can be additionally taken care of to different applications, for example, WebSphere Business Monitor for exchange observing, exchange evaluating, and business measure checking. More data can be found in the online Information Center under the theme Performance and monitoring> Business-level monitoring.
Ans: mqsichangebroker command is used to modify the broker parameters.
Ans: Message Broker can be set up to work with the accompanying High Availability alternatives:
Ans: Built-in templates/patterns are provided with the IIB/WMB Toolkit to make assets utilized to tackle explicit business issues. You can make user-defined designs by using the template creation layouts given in IIB/WMB Toolkit.
Patterns are accessible to a pattern client in the Patterns Explorer see in the Broker Application Development point of view of the IIB/WMB Toolkit.
Ans: You can migrate from the previous version to the new version in an accompanying way:
Ans: Triggering means it put the message into a queue.
Ans: Two basic error handling techniques are available in the message flow are:
Ans: We can enrich and transform the messages in WMB in the following ways:
XSL style sheets
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