Shortcuts To 70-354（31 to 36）

70-354 Exam

Shortcuts To 70-354（31 to 36）

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Q31. DRAG DROP - (Topic 6)

You have a web application on Azure.

The web application does not employ Secure Sockets Layer (SSL).

You need to enable SSL for your production deployment web application on Azure.

Which four actions should you perform 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:

Q32. - (Topic 6)

A company hosts a website and exposes web services on the company intranet.

The intranet is secured by using a firewall. Company policies prohibit changes to firewall

rules.

Devices outside the firewall must be able to access the web services.

You need to recommend an approach to enable inbound communication.

What should you recommend?

A. The Azure Access Control Service

B. Windows Azure Pack

C. The Azure Service Bus

D. A web service in an Azure role that relays data to the internal web services

Answer: C

Explanation: The Service Bus Relay is designed for the use-case of taking existing Windows Communication Foundation (WCF) web services and making those services securely accessible to solutions that reside outside the corporate perimeter without requiring intrusive changes to the corporate network infrastructure. Such Service Bus relay services are still hosted inside their existing environment, but they delegate listening for incoming sessions and requests to the cloud-hosted Service Bus.

Reference: .NET On-Premises/Cloud Hybrid Application Using Service Bus Relay

http://azure.microsoft.com/en-gb/documentation/articles/cloud-services-dotnet-hybrid-app-using-service-bus-relay/

Q33. - (Topic 6)

You are evaluating an Azure application. The application includes the following elements:

. A web role that provides the ASP.NET user interface and business logic

. A single SQL database that contains all application data

Each webpage must receive data from the business logic layer before returning results to the client. Traffic has increased significantly. The business logic is causing high CPU usage.

You need to recommend an approach for scaling the application.

What should you recommend?

A. Store the business logic results in Azure Table storage.

B. Vertically partition the SQL database.

C. Move the business logic to a worker role.

D. Store the business logic results in Azure local storage.

Answer: C

Explanation: For Cloud Services in Azure applications need both web and worker roles to scale well.

Reference: Application Patterns and Development Strategies for SQL Server in Azure Virtual Machines

https://msdn.microsoft.com/en-us/library/azure/dn574746.aspx

Q34. - (Topic 6)

You design an Azure web application. The web application is accessible by default as a standard cloudapp.net URL.

You need to recommend a DNS resource record type that will allow you to configure access to the web application by using a custom domain name.

Which DNS record type should you recommend?

A. SRV

B. MX

C. CNAME

D. A

Answer: C

Explanation: A CNAME record maps a specific domain, such as contoso.com or www.contoso.com, to a canonical domain name. In this case, the canonical domain name is the <myapp>.cloudapp.net domain name of your Azure hosted application. Once created, the CNAME creates an alias for the <myapp>.cloudapp.net. The CNAME entry will resolve to the IP address of your <myapp>.cloudapp.net service automatically, so if the IP address of the cloud service changes, you do not have to take any action.

Incorrect: Not D:

Since an A record is mapped to a static IP address, it cannot automatically resolve changes to the IP address of your Cloud Service.

An A record maps a domain, such as contoso.com or www.contoso.com, or a wildcard domain such as *.contoso.com, to an IP address. In the case of an Azure Cloud Service, the virtual IP of the service. So the main benefit of an A record over a CNAME record is that you can have one entry that uses a wildcard, such as *.contoso.com, which would handle requests for multiple sub-domains such as mail.contoso.com, login.contoso.com, or

www.contso.com.

Reference: Configuring a custom domain name for an Azure cloud service

http://azure.microsoft.com/en-gb/documentation/articles/cloud-services-custom-domain-name/

Q35. - (Topic 6)

You are designing an Azure application. The application includes two web roles and three instances of a worker role. The web roles send requests to the worker role by using one or more Azure Queues.

You need to recommend a queue design for sending requests to the worker role.

What should you recommend?

A. Create a queue for each combination of web roles and worker role instances. Send requests to all worker role instances based on the sending web role.

B. Create a single queue. Send all requests on the single queue.

C. Create a queue for each worker role instance. Send requests on each worker queue by using a round robin rotation.

D. Create a queue for each web role. Send requests on all queues at the same time.

Answer: B

Explanation: To communicate with the worker role, a web role instance places messages on to a queue. A worker role instance polls the queue for new messages, retrieves them, and processes them. There are a couple of important things to know about the way the queue service works in Azure. First, you reference a queue by name, and multiple role instances can share a single queue. Second, there is no concept of a typed message; you construct a message from either a string or a byte array. An individual message can be no more than 64 kilobytes (KB) in size.

Reference: 5 – Executing Background Tasks

https://msdn.microsoft.com/en-gb/library/ff803365.aspx

Reference: .NET Multi-Tier Application Using Service Bus Queues http://azure.microsoft.com/en-gb/documentation/articles/cloud-services-dotnet-multi-tier-app-using-service-bus-queues/

Q36. - (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.

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

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