Design and Implement cloud services

Question 1

Cloud service overview

Answer 1

1) Platform-as-a-Service (PaaS)
2) deploy websites and asynchronous work to Azure servers with simpler deployment options and without the need to manage complex networking and operating system updates.

Question 2

Design and develop a cloud service

Answer 2

1) Install SDKs and emulators
2) Develop a web or worker role
3) Design and implement resiliency
4) Develop startup tasks

Question 3

Installing SDKs and emulators

Answer 3

1) install the Azure SDK

2) Azure Compute Emulator and the Azure Storage Emulator.

Question 4

Developing a web role

Answer 4

Web roles Used for web server applications hosted in IIS, such as an ASP.NET MVC application or a Web API application

Question 5

Worker role

Answer 5

Used for running a compute workload. It can be used to launch an executable process or for background worker implementations that work in a similar manner to a Windows service.

Question 6

Paas Vs Iaas

Answer 6

With PaaS cloud services, you are entrusting Azure to manage the operating system updates, patching, and deployment lifecycle of your applications. IaaS cloud services are a mechanism for grouping assets in your VM topology.

Question 7

The RoleEntryPoint Class

Answer 7

1) Cloud service web and worker roles are projects that include a class that inherits the RoleEntryPoint base type
2) When each role is allocated to a VM, its entry point is invoked to initialize the environment. There are three key methods to override when you implement RoleEntryPoint: OnStart(), Run(), and OnStop()

Question 8

cloud service project elements

Answer 8

1) ServiceDefinition.csdef
2) ServiceConfiguration.Local.cscfg, ServiceConfiguration.Cloud.cscfg
3) Roles node

Question 9

Each startup task typically references a batch file that contains the instructions to run.

Answer 9

1) Install registry settings with a .reg file
2) Call a Windows PowerShell script
3) Install software using msiexec.exe
4) Launch a process

Question 10

Configuring instance size and count

Answer 10

Similar to websites and VMs, you can scale cloud service roles both in terms of instance size and instance count, and you can use auto-scale for the instance count.

Question 11

Scaling role instance sizes

Answer 11

The size of the local temp disk
The number of CPU cores available
The amount of RAM memory available
The network performance

Question 12

scaling the instance size of a role instance

Answer 12

scaling the instance size of a role instance requires that you change the cloud service definition and re-deploy the package

Question 13

Scaling role instance count

Answer 13

The role instance count can be scaled using the existing management portal or by adjusting the count in the cloud service configuration and re-deploying

Question 14

cloud service endpoint types

Answer 14

1) Input endpoint
2) InstanceInput endpoint
3) Internal endpoint

Question 15

Configuring HTTPS endpoints

Answer 15

1) acquire a certificate
2) convert the certificate into the PFX format by exporting it from the keystore.
3) upload the certificate to the certificate store used by your cloud service
4) configure an endpoint in your role

Question 16

Configuring network traffic rules

Answer 16

Network traffic rules are configured to control or restrict how internal communication between roles within a cloud service happens, effectively dictating which roles are allowed to communicate with the internal endpoints of another role within a cloud service.

Question 17

Configuring access control lists

Answer 17

1) Access control lists act on cloud service endpoints the same way they act on VM endpoints
2) Currently, you must perform a complete re-deployment if you enable ACLs on a service that already exists

Question 18

Configuring virtual networks

Question 19

Configuring reserved IPs and public IPs

Answer 19

configure the reserved and public IPs by editing the service configuration file.

Question 20

Configuring a reserved IP

Answer 20

1) create a reserved IP in your Azure subscription.
2) New-AzureReservedIP -Location “” -ReservedIPName
3)