You need to design the system that alerts project managers to data changes in the contractor information app.
Which service should you use?
Correct Answer: C
Explanation/Reference:
* Scenario:
/Mobile Apps: Event-triggered alerts must be pushed to mobile apps by using a custom Node.js script.
/The service level agreement (SLA) for the solution requires an uptime of 99.9%
* If you are already using Azure Storage Blobs or Tables and you start using queues, you are guaranteed
99.9% availability. If you use Blobs or Tables with Service Bus queues, you will have lower availability.
Note: Microsoft Azure supports two types of queue mechanisms: Azure Queues and Service Bus Queues.
/Azure Queues, which are part of the Azure storage infrastructure, feature a simple REST-based Get/Put/ Peek interface, providing reliable, persistent messaging within and between services.
/Service Bus queues are part of a broader Azure messaging infrastructure that supports queuing as well as publish/subscribe, Web service remoting, and integration patterns.
Reference: Azure Queues and Service Bus Queues - Compared and Contrasted
https://msdn.microsoft.com/en-us/library/azure/hh767287.aspx