Design web apps

Question 1

Overview

Answer 1

1) Globally scale websites
2) Create websites using Microsoft Visual Studio
3) Debug websites
4) Understand supported languages
5) Websites, VMs, and cloud services

Question 2

CDN setup

Answer 2

1) Endpoint
2) Protocol enabled
3) Query string status
4) domain names

Question 3

Azure Traffic Manager

Answer 3

1) use a single URL to reference all of them
2) closest possible geographically
3) provides better control on where the other web applications are being deployed around the world

Question 4

CDN Vs Azure Traffic Manager

Answer 4

CDN will deploy when it is called from a location, whereas by using a Traffic Manager, the locations are all planned out carefully at the beginning.

Question 5

Monitor

Answer 5

1) Monitor component that is built into the blade for the web application
2) view data such as requests and errors that have occurred on the server. You also can add alerts to notify you when certain conditions are met (for example, Http Server Errors > 0)

Question 6

Azure Application Insights

Answer 6

1) any website can send telemetry data to the Preview Management portal
2) Application Insights blade displays various captured data elements.
3) can use this to add a monitor from any webserver, not just Azure

Question 7

Site Control Manager

Answer 7

1) can use to debug your website
2) The Site Control Manager site runs Project Kudu, which is an open-source project for managing deployments, WebJobs, and other features for Web Apps

Question 8

Site Control Manager shows

Answer 8

currently running processes, system information, application settings, connection strings, environment variables, PATH, HTTP headers, and server variables

Question 9

Deploy websites overview

Answer 9

1) Implement Azure Site Extensions
2) Create packages
3) Service plans
4) Deployment slots
5) Resource groups
6) Publishing options
7) Web Deploy, and FTP locations and settings
8) Settings

Question 10

Implement Azure Site Extensions

Answer 10

1) can create and deploy custom administrator functionality.

2) can add Site Extensions to your own site and also publish it to http://www.siteextensions.net/.

Question 11

Site extensions extra steps

Answer 11

1) add an applicationHost.xdt file
2) Add a build.cmd file to the root of your project
3) Add the new website to the Site Control Manager website
4) Restart your website
5) https://.scm.azurewebsites.net/, where is your site.

Question 12

Publishing Profile

Answer 12

1) Azure PowerShell, you will need the publishing profile

2) import the publishing profile file in visual studio

Question 13

Local GIT in Azure

Answer 13

1) Azure will create a GIT repository and control your source code for you
2) Azure provides online backups of all changes and commits to the GIT repository
3) if you configure the deployment to use a local GIT repository

Question 14

Design websites for business continuity

Answer 14

1) Scale-up and scale-out with App Service Web Apps and Azure SQL Database
2) Configure data replication patterns
3) Update websites with minimal downtime
4) Backup and restore data
5) Design for disaster recovery
6) Deploy websites to multiple regions for high availability
7) Design data tier

Question 15

Elastic Scale

Answer 15

1) SQL Database offers a scaling feature called Elastic Scale
2) Sharding a database means to split it and partition the different parts to multiple drives.
3) You can scale databases horizontally to shard the database into multiple databases based on the data.

Question 16

DB vertical scaling

Answer 16

1) Vertical scaling moves the database from a Standard pricing tier, for which the size of the database is limited to 250 GB, to a Premium pricing tier, which can support up to 500 GB.
2) combination of vertical and sharding is possible

Question 17

Configure data replication patterns

Answer 17

1) CDN
2) SQL sync
3) SQL geo-replication

Question 18

SQL sync

Answer 18

1) set a time interval at which the database synchronizes its data to one of more other databases.
2) SQL Sync is not a replacement for actual data replication, because it is not being run against the transactions

Question 19

SQL geo-replication

Answer 19

1) Geo-replication sets up replica databases on other SQL Servers or in other data centers that can be used in a disaster recovery scenario
2) Create a readable backup, you need to use the Premium tier

Question 20

Update websites with minimal downtime

Answer 20

1) use slots

2) run multiple instances and put the instances into Upgrade Domains.

Question 21

Backup and restore data

Answer 21

1) create two files in the Blob container: an XML configuration file and a zip file with all of the files from the site.
2) If the database was backed up as well, the backup file for that will be in the content zip file at the root level.

Question 22

Design for disaster recovery

Answer 22

1) backups are stored in Azure Blob storage
2) Storage account to a Geo-Redundant or Read-Access Geo-Redundant pricing tier instead of just locally redundant
3) back up Microsoft Hyper-V–based machines that are running on-premises

Question 23

Deploy websites to multiple regions for high availability

Answer 23

1) can include only one web application from any given Azure Region
2) Traffic Manager to expose the websites via a single URL

Question 24

configuration settings for the Traffic Manager

Answer 24

1) The default setting is Performance, which uses locations geographically closest to the request.
2) Round Robin distributes traffic evenly between all of the endpoints.
3) Failover specifies that the main website is used for all traffic and then the backups are used if the primary site goes offline

Question 25

Design data tier

Answer 25

1) RDBMS vs NoSql
2) how database will need to scale-up to handle the traffic
3) strategies regarding backup and sharding

Question 26

RDBMS system uses

Answer 26

1) Transact-SQL
2) maybe command-line interface (CLI) functions defined to get or manipulate data
3) SQL DB scales upto 500gb

Question 27

NoSQL system

Answer 27

1) Azure Table storage uses a Partition Key and a Row Key to separate the data and for searching

Question 28

DocumentDb properties

Answer 28

1) indexes every field that is stored in the JSON documents that are added to the system.
2) operates closer to a standard RDBMS, but it is still a JSON document storage system
3) does allow JavaScript routines to be used as stored procedures

Question 29

Unused data

Answer 29

1) plan to back up the database or shard data that no longer needs to be in the database.
2) moving data to a backup after a transaction is completed can also help to protect customer information
3) you might want to move the completed orders to a NoSQL system such as DocumentDB for long-term storage and reporting