20 Microsoft Message Queue Interview Questions and Answers

Microsoft Message Queue is a popular software application that allows businesses to manage and process messages. When applying for a position that involves Message Queue, it is likely that employers will ask you questions about your experience and knowledge of the application. In this article, we review some of the most common Message Queue interview questions and provide tips on how to answer them.

Microsoft Message Queue Interview Questions and Answers

Here are 20 commonly asked Microsoft Message Queue interview questions and answers to prepare you for your interview:

1. What is MSMQ?

MSMQ is a message queue service that allows applications to communicate with each other by sending and receiving messages. MSMQ can be used to send messages between applications on the same computer or on different computers across a network.

2. Can you explain what message queuing is in relation to MSMQ?

Message queuing is a process of storing messages in a queue so that they can be processed later. This is often used in situations where a message needs to be sent from one system to another, but the receiving system is not available at the time the message is sent. In MSMQ, message queuing is used to send messages between computers, even if they are not online at the same time. This allows for asynchronous communication between systems.

3. Why do we need a message queue when the same thing can be achieved with a database?

A message queue is a more efficient way to handle communication between different parts of a system. With a message queue, messages can be sent and received asynchronously, which means that the sender and receiver don’t have to be online at the same time. This can be helpful when you are dealing with a lot of data or when you need to ensure that messages are delivered in a timely manner.

4. How does MSMQ work?

MSMQ is a message queue system that allows for asynchronous communication between applications. Message queues are used to store messages until they can be processed by the receiving application. MSMQ is used to provide a reliable message delivery system, even in cases where the receiving application is unavailable.

5. What are the various components of an MSMQ message?

The various components of an MSMQ message are the message body, the message properties, and the message label. The message body is the actual content of the message, while the message properties contain metadata about the message. The message label is used to identify the message and is typically used by the message queue manager to route the message to the correct destination.

6. What kind of messages can be transmitted over MSMQ?

MSMQ can transmit a variety of messages, including text, binary, and XML messages.

7. How can you create and send a simple text message using MSMQ?

You can create and send a simple text message using MSMQ by creating a new queue and then sending a message to that queue.

8. Do all applications that want to use MSMQ have to be written specifically for it? What about existing applications that aren’t compatible?

No, all applications that want to use MSMQ do not have to be written specifically for it. MSMQ can be used with existing applications that are not compatible by using a message queue server.

9. Can you talk about some common use cases for MSMQ?

Some common use cases for MSMQ include:

– Sending messages between applications on different servers
– Sending messages between different departments or organizations
– Sending messages between different geographical locations
– Sending messages between different time zones

10. Is it possible to configure MSMQ so as to ensure that messages are delivered even if the destination machine is down? If yes, how?

Yes, it is possible to configure MSMQ to ensure that messages are delivered even if the destination machine is down. This can be done by setting up a message queue on the destination machine and configuring MSMQ to send messages to that queue. MSMQ will then store the messages in the queue until the destination machine is back up and running, at which point the messages will be delivered.

11. What’s the difference between transactional queues and non-transactional queues in MSMQ?

Transactional queues provide guarantees that messages will be delivered exactly once and in the order that they were sent. This is accomplished by storing messages in a database until they are successfully delivered. Non-transactional queues do not provide these guarantees, but are faster and require less overhead.

12. What happens to a message that’s sent to a public queue and nobody has read it after the maximum time period specified by the administrator?

If a message is sent to a public queue and nobody has read it after the maximum time period specified by the administrator, then the message will be automatically deleted.

13. What are private queues in MSMQ?

Private queues are queues that are not accessible to other computers on the network. Private queues are typically used for local communication between applications on the same computer.

14. What is the importance of ACKs in MSMQ?

ACKs are important in MSMQ because they provide a way for the sender of a message to know that the message has been received and processed by the receiver. Without ACKs, the sender would have no way of knowing if the message was received successfully or not, which could lead to problems with message delivery.

15. What’s the best way to synchronize data across multiple servers using MSMQ?

The best way to synchronize data across multiple servers using MSMQ is to use a message queue. A message queue is a system that allows you to send and receive messages between multiple servers. This way, you can ensure that all of your servers are receiving the same data.

16. What are some of the security features provided by MSMQ?

MSMQ provides a number of security features to help protect message queues and the messages they contain. These features include message encryption, message signing, and message authentication.

17. What are the limitations of using MSMQ?

One potential limitation of using MSMQ is that it is not available on all versions of Windows. Another potential limitation is that it does not support all types of data, so you may need to use a different messaging system if you need to send a message that is not compatible with MSMQ.

18. How scalable is MSMQ?

MSMQ is a very scalable message queuing system. It can support up to 2 million messages per second and can handle up to 4 million messages per day.

19. What are the main differences between MSMQ 3.0, 4.0, and 5.0?

MSMQ 3.0 was the first version of MSMQ to be included as a part of the Windows operating system. It introduced a number of new features, including support for Active Directory, security enhancements, and improved message routing. MSMQ 4.0 added support for transactional messaging, while MSMQ 5.0 added support for message prioritization and the ability to send messages to multiple queues simultaneously.

20. How do you set up a remote computer to receive messages from MSMQ?

In order to set up a remote computer to receive messages from MSMQ, you will need to install the Message Queuing feature on the remote computer. Once Message Queuing is installed, you will need to create a new private queue and then configure the queue to allow remote computers to connect to it.