mq series mainframe interview questions

MQ Series Interview Questions Answers
  • What is QueueManager in IBM WebSphere MQ? …
  • What is Channel in IBM WebSphere MQ? …
  • What is dead letter queue in IBM MQ Series ? …
  • What is the CCDT file on WebSphere MQ or WMQ? …
  • What is SSLPEER in IBM Websphere MQ?

IBM WMQ Interview Questions and Answers for beginners and experts. List of frequently asked IBM WMQ Interview Questions with Answers by Besant Technologies. We hope these IBM WMQ Interview Questions and Answers are useful and will help you to get the best job in the Data Science industry. This IBM WMQ interview questions and answers are prepared by IBM WMQ Professionals based on MNC Companies’ expectations. Stay tuned we will update New IBM WMQ Interview questions with Answers Frequently.

The application data. The content and structure of the application data is defined by the application programs that use it.

A message descriptor. The message descriptor identifies the message and contains additional control information, such as the type of message and the priority assigned to the message by the sending application. Websphere mq defines the format of the message descriptor. For a complete description of the message descriptor.

A web sphere mq client is a component that allows an application running on a system to issue mqi calls to a queue manager running on another system.

The output from the call is sent back to the client, which passes it back to the application.

Mqsc commands: these commands are used to handle the admin related functions for the components that are present in the mq series. In general mqsc commands are used for creating and maintaining message channels, queue managers, clusters etc

Control commands: these commands are used to manage the processes and services that are helpful in the functioning of the mq series. In general these commands are used for channel listener, channel initiator, trigger monitor etc

The queue manager is responsible for storing and routing messages to other queue manager within mq and it also communicates with outside world e.g. Java program or any other mq client.

Channel carries one way traffic in mq series (i.e. Channels are uni directional). You can have either sending channel or receiving channel in mq.

For example, you might want to start an application when the maximum number of messages on a queue reaches a specified number.

top 150+ Mq interview questions and answers for freshers and experienced

IBM WebSphere Message Queue Interview Questions and Answers

MQ abbreviates Message Queuing. When it comes to message-driven processes, IBM enables users to simply keep up the pace with the WebSphere with which all application programs can simply be managed. There is no strict upper limit on the platforms when it comes to communicating and the good thing is vast support is available from IBM to enable the users to manage everything simply.

What are the benefits that corporations can have through IBM Websphere MQ

Organizations and corporations can simply send bulk messages over complex networks. There are no strict protocols that need to be followed. Even if they are, the same can be managed very easily. Enterprises can make sure of quick information delivery to the destinations and can always have the things done in the best possible manner.

The following are some of the reserved queue names of IBM Websphere MQ Series: ☆ SYSTEM.ADMIN.CHANNEL.EVENT Queue for events of channel ☆ SYSTEM.CHANNEL.INITQ A distributed queuing queue on z/OS without CICS ☆ SYSTEM.CHANNEL.SEQNO A distributed queuing queue on z/OS using CICS ☆ SYSTEM.CHANNEL.SYNCQ A distributed queuing queue on z/OS without CICS ☆ SYSTEM.ADMIN.COMMAND.QUEUE Queue for PCF command messages to be sent for ☆ non- z/OS ☆ SYSTEM.ADMIN.CONFIG.EVENT Queue for events of configuration ☆ SYSTEM.ADMIN.PERFM.EVENT Queue for events of performance ☆ SYSTEM.ADMIN.QMGR.EVENT Queue for events of queue manager ☆ SYSTEM.CHANNEL.COMMAND A distributed queuing queue on z/OS using CICS ☆ SYSTEM.CICS.INITIATION.QUEUE Queue for utilization of triggering for non- z/OS ☆ SYSTEM.CLUSTER.COMMAND.QUEUE Queue for communication repository changes among queue managers (applicable for AIX, HP-UX, Linux, OS/2 Warp, OS/400, Solaris, Windows, and z/OS only) ☆ SYSTEM.CLUSTER.REPOSITORY.QUEUE Queue for holding information about repository (applicable for AIX, HP-UX, Linux, OS/2 Warp, OS/400, Solaris, Windows, and z/OS only)

☆ The exchanging of messages among sending and receiving programs is time independent ☆ The sending and receiving application programs are decoupled ☆ Senders process can continue with out the need of waiting for the receivers acknowledgement message ☆ The receivers application need not be running while the message is sent ☆ The receiver can retrieve the messages after it has been started

☆ WebSphere MQ will significantly improves the flow of information across an enterprise. ☆ The message is placed and adjusted for dynamic business requirements. ☆ MQ series reduce maintenance, integration costs and acts as a bridge to various technologies. ☆ MQ Series reduces costs and all the disruptions are processed from data loss. ☆ Allows ongoing maintenance efforts through universal service delivery. ☆ Security breaches are eliminated and insures the compliance through message and. ☆ transaction integrity.

MQ messages types are: ☆ Data-gram – It is an unsolicited message ☆ Request – A message for which a response is expected ☆ Reply – A message event such as a confirmation on arrival or delivery. It can be an error ☆ MQ messages can be persistent or non-persistent

Sending messages from one queue manager to another queue manager is known as inter communication/ ☆ The receiving queue manager may by on the same machine or another. ☆ It could be executing on the platform where the local queue manager exists ☆ It could be executing on another platform supported by Web Sphere MQ ☆ The participating entities are: 1) Message channels, message channel agents 2) Transmission queues, channel initiators and listeners 3) Programs those are co-existing

Suppose you need to install the IBM Websphere MQ in Aix, what would be the requirements related to the software you need to fulfill?

The one and the only prime requirement is the machine should be of 32-bit OS. Although it works on 64-bit OS, it needs some customized settings. The Aix should be installed on it and there will be no corrupt files related to programming.

FAQ

What is MQ in mainframe?

IBM MQ is messaging and queuing middleware, with several modes of operation: point-to-point ; publish/subscribe ; file transfer . Applications can publish messages to many subscribers over multicast . Messaging. Programs communicate by sending each other data in messages rather than by calling each other directly.

What are different types of MQ?

There are four different types of MQ queues and one related object. The four different types of queues are: Local Queue (QL), Remote Queue (QR), Transmission Queue (TQ), and Dead Letter Queue, and the related object is a Channel (CH).

What is MQSeries used for?

MQSeries is an IBM software family whose components are used to tie together other software applications so that they can work together. This type of application is often known as business integration software or middleware.

What protocol is used in MQ?

To receive messages from a message queue (MQ) service, configure a log source to use the MQ protocol. The protocol name displays in IBM® QRadar® as MQ JMS. IBM MQ is supported. The MQ protocol is an outbound/active protocol that can monitor multiple message queues, up to a maximum of 50 per log source.

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