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Q1.  – (Topic 5)

You need to recommend a technology for processing customer pickup requests. Which technology should you recommend?

A. Notification hub

B. Queue messaging

C. Mobile Service with push notifications

D. Service Bus messaging

Answer: D

Explanation: 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.

Service Bus Queue support Push-style API (while Azure Queue messaging does not).

Incorrect:

Not A: Notification Hub is only used to push notification, not for processing requests. Not B As a solution architect/developer, you should consider using Azure Queues when:

* Your application must store over 80 GB of messages in a queue, where the messages have a lifetime shorter than 7 days.

* Your application wants to track progress for processing a message inside of the queue. This is useful if the worker processing a message crashes. A subsequent worker can then use that information to continue from where the prior worker left off.

You require server side logs of all of the transactions executed against your queues. Not C: To process the messages we do not need push notification.

Reference: Azure Queues and Service Bus Queues – Compared and Contrasted

https://msdn.microsoft.com/en-us/library/azure/hh767287.aspx

Q2.  – (Topic 6)

You are designing an Azure application that stores data.

You have the following requirements:

✑ The data storage system must support storing more than 500 GB of data.

✑ Data retrieval must be possible from a large number of parallel threads.

✑ Threads must not block each other.

You need to recommend an approach for storing data. What should you recommend?

A. Azure Notification Hubs

B. A single SQL database in Azure

C. Azure Queue storage

D. Azure Table storage

Answer: D

Explanation: * Azure Table Storage can be useful for applications that must store large amounts of nonrelational data, and need additional structure for that data. Tables offer key- based access to unschematized data at a low cost for applications with simplified data- access patterns. While Azure Table Storage stores structured data without schemas, it does not provide any way to represent relationships between the data.

* As a solution architect/developer, consider using Azure Table Storage when:

/ Your application stores and retrieves large data sets and does not have complex relationships that require server-side joins, secondary indexes, or complex server-side logic.

/ You need to achieve a high level of scaling without having to manually shard your dataset.

Reference: Azure Table Storage and Windows Azure SQL Database – Compared and Contrasted

https://msdn.microsoft.com/en-us/library/azure/jj553018.aspx

Q3. HOTSPOT – (Topic 6)

You administer the virtual environment for Contoso, Ltd. You configure and provision a new virtual machine (VM).

You need to add the existing VM to an existing availability set.

How should you complete the Azure PowerShell command? To answer, select the appropriate Azure PowerShell cmdlet from each list in the answer area.

Answer:

Q4. DRAG DROP – (Topic 7)

You are implementing the new security requirements for the WGBCreditCruncher app.

You need to explain the security process flow to another developer. You start by navigating to the web app as it is presented to the user.

Which five actions must be performed in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Q5. HOTSPOT – (Topic 4)

The company has two corporate offices. Customers will access the websites from datacenters around the world.

You need to architect the global website strategy to meet the business requirements. Use the drop-down menus to select the answer choice that answers each question.

Answer:

Explanation:

* Scenario: The customer-facing website must have access to all ad copy and media.

Q6. HOTSPOT – (Topic 6)

Resources must authenticate to an identity provider. You need to configure the Azure Access Control service.

What should you recommend? To answer, select the appropriate responses for each requirement in the answer area.

Answer:

Explanation:

Box 1:

* Token – A user gains access to an RP application by presenting a valid token that was issued by an authority that the RP application trusts.

* Identity Provider (IP) – An authority that authenticates user identities and issues security tokens, such as Microsoft account (Windows Live ID), Facebook, Google, Twitter, and Active Directory. When Azure Access Control (ACS) is configured to trust an IP, it accepts and validates the tokens that the IP issues. Because ACS can trust multiple IPs at the same time, when your application trusts ACS, you can your application can offer users the option to be authenticated by any of the IPs that ACS trusts on your behalf.

Q7. HOTSPOT – (Topic 6)

A company uses Azure for several virtual machine (VM) and website workloads. The company plans to assign administrative roles to a specific group of users. You have a resource group named GROUP1 and a virtual machine named VM2.

The users have the following responsibilities:

You need to assign the appropriate level of privileges to each of the administrators by using the principle of least privilege.

What should you do? To answer, select the appropriate target objects and permission levels in the answer area.

Answer:

Explanation:

* Owner can manage everything, including access.

* Contributors can manage everything except access.

Note: Azure role-based access control allows you to grant appropriate access to Azure AD users, groups, and services, by assigning roles to them on a subscription or resource group or individual resource level.

Q8.  – (Topic 6)

You are designing an Azure web application that includes many static content files.

The application is accessed from locations all over the world by using a custom domain name.

You need to recommend an approach for providing access to the static content with the least amount of latency.

Which two actions should you recommend? Each correct answer presents part of the solution.

A. Place the static content in Azure Table storage.

B. Configure a CNAME DNS record for the Azure Content Delivery Network (CDN) domain.

C. Place the static content in Azure Blob storage.

D. Configure a custom domain name that is an alias for the Azure Storage domain.

Answer: B,C

Explanation: B: There are two ways to map your custom domain to a CDN endpoint.

1. Create a CNAME record with your domain registrar and map your custom domain and subdomain to the CDN endpoint

2. Add an intermediate registration step with Azure cdnverify

C: The Azure Content Delivery Network (CDN) offers developers a global solution for delivering high-bandwidth content by caching blobs and static content of compute instances at physical nodes in the United States, Europe, Asia, Australia and South America.

The benefits of using CDN to cache Azure data include:

/ Better performance and user experience for end users who are far from a content source, and are using applications where many 'internet trips' are required to load content

/ Large distributed scale to better handle instantaneous high load, say, at the start of an event such as a product launch

Reference: Using CDN for Azure

https://azure.microsoft.com/en-gb/documentation/articles/cdn-how-to-use/

Reference: How to map Custom Domain to Content Delivery Network (CDN) endpoint https://github.com/Azure/azure-content/blob/master/articles/cdn-map-content-to-custom-

domain.md

https://github.com/Azure/azure-content/blob/master/articles/cdn-map-content-to-custom- domain.md

Q9. DRAG DROP – (Topic 3)

You need to deploy the virtual machines to Azure.

Which four Azure PowerShell scripts should you run in sequence? To answer, move the appropriate scripts from the list of scripts to the answer area and arrange them in the correct order.

Answer:

Explanation: 

Box 1:

Box 2:

Box 3:

Box 4:

Note:

* In order to upload a VHD file to Azure, we need :

✑ Azure PowerShell SDK

✑ A publish setting file

✑ An affinity group

✑ A Storage account

✑ A container

Topic 4, Lucerne Publishing

Background

Overview

Lucerne Publishing creates, stores, and delivers online media for advertising companies. This media is streamed to computers by using the web, and to mobile devices around the world by using native applications. The company currently supports the iOS, Android, and Windows Phone 8.1 platform.

Lucerne Publishing uses proprietary software to manage its media workflow. This software has reached the end of its lifecycle. The company plans to move its media workflows to the cloud. Lucerne Publishing provides access to its customers, who are third-party companies, so that they can download, upload, search, and index media that is stored on Lucerne Publishing servers.

Apps and Applications

Lucerne Publishing develops the applications that customers use to deliver media. The

company currently provides the following media delivery applications:

✑ Lucerne Media W – a web application that delivers media by using any browser

✑ Lucerne Media M – a mobile app that delivers media by using Windows Phone 8.1

✑ Lucerne Media A – a mobile app that delivers media by using an iOS device

✑ Lucerne Media N – a mobile app that delivers media by using an Android device

✑ Lucerne Media D – a desktop client application that customer's install on their local computer

Business Requirements

Lucerne Publishing's customers and their consumers have the following requirements:

✑ Access to media must be time-constricted once media is delivered to a consumer.

✑ The time required to download media to mobile devices must be minimized.

✑ Customers must have 24-hour access to media downloads regardless of their location or time zone.

✑ Lucerne Publishing must be able to monitor the performance and usage of its customer-facing app.

Lucerne Publishing wants to make its asset catalog searchable without requiring a database redesign.

✑ Customers must be able to access all data by using a web application. They must

also be able to access data by using a mobile app that is provided by Lucerne Publishing.

✑ Customers must be able to search for media assets by key words and media type.

✑ Lucerne Publishing wants to move the asset catalog database to the cloud without formatting the source data.

Other Requirements Development

Code and current development documents must be backed up at all times. All solutions

must be automatically built and deployed to Azure when code is checked in to source control.

Network Optimization

Lucerne Publishing has a .NET web application that runs on Azure. The web application analyzes storage and the distribution of its media assets. It needs to monitor the utilization of the web application. Ultimately, Lucerne Publishing hopes to cut its costs by reducing data replication without sacrificing its quality of service to its customers. The solution has the following requirements:

✑ Optimize the storage location and amount of duplication of media.

✑ Vary several parameters including the number of data nodes and the distance from node to customers.

✑ Minimize network bandwidth.

✑ Lucerne Publishing wants be notified of exceptions in the web application.

Technical Requirements Data Mining

Lucerne Publishing constantly mines its data to identify customer patterns. The company

plans to replace the existing on-premises cluster with a cloud-based solution. Lucerne Publishing has the following requirements:

Virtual machines:

✑ The data mining solution must support the use of hundreds to thousands of processing cores.

✑ Minimize the number of virtual machines by using more powerful virtual machines.

Each virtual machine must always have eight or more processor cores available.

✑ Allow the number of processor cores dedicated to an analysis to grow and shrink automatically based on the demand of the analysis.

✑ Virtual machines must use remote memory direct access to improve performance.

Task scheduling:

The solution must automatically schedule jobs. The scheduler must distribute the jobs based on the demand and available resources.

Data analysis results:

The solution must provide a web service that allows applications to access the results of analyses.

Other Requirements Feature Support

✑ Ad copy data must be searchable in full text.

✑ Ad copy data must indexed to optimize search speed.

✑ Media metadata must be stored in Azure Table storage.

✑ Media files must be stored in Azure BLOB storage.

✑ The customer-facing website must have access to all ad copy and media.

✑ The customer-facing website must automatically scale and replicate to locations around the world.

✑ Media and data must be replicated around the world to decrease the latency of data transfers.

✑ Media uploads must have fast data transfer rates (low latency) without the need to upload the data offline.

Security

✑ Customer access must be managed by using Active Directory.

✑ Media files must be encrypted by using the PlayReady encryption method.

✑ Customers must be able to upload media quickly and securely over a private connection with no opportunity for internet snooping.

Q10. HOTSPOT – (Topic 4)

You need to recommend strategies for storing data.

Which services should you recommend? To answer, select the appropriate storage technology for each data type in the answer area.

Answer:

Explanation:

* Media metadata: Azure Queue Storage Service

Scenario: Media metadata must be stored in Azure Table storage.

Azure Queues provide a uniform and consistent programming model across queues, tables, and BLOBs – both for developers and for operations teams.

* Images: Azure Mobile Services

Scenario: Media files must be stored in Azure BLOB storage.

You can use Azure Mobile Services to access images from mobile devices.

* Audio: Azure Media Services

* Video: Azure Media Services

Microsoft Azure Media Services is an extensible cloud-based platform that enables developers to build scalable media management and delivery applications. Media Services is based on REST APIs that enable you to securely upload, store, encode and package video or audio content for both on-demand and live streaming delivery to various clients (for example, TV, PC, and mobile devices).

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