Solutions Architecture Discussions Overview

Question 1

In Route 53, A Record is what?

Answer 1

IP

Question 2

In case of a disaster what should you implement on an instance?

Answer 2

Multi-AZ

Question 3

What are the 5 pillars for a well architectured application?

Answer 3

Cost 
Reliability 
Performance 
Scalability 
Operational Excellence

Question 4

In order to optimize cost, you should what?

Answer 4

Reserve instances

Question 5

I am only useful for communication between instances within the VPC.
I also remain associated to the instance during restarts

What am i?

Answer 5

Private IP

Question 6

When is a private IP allocated to an instanced released?

Answer 6

Only when the instance is terminated

Question 7

Every time you stop the instance and start it again, the Public IP address of the instance does what?

Answer 7

Changes

Question 8

How would you maintain an IP address through instance stop/start cycle?

Answer 8

Use Elastic IP addresses

Question 9

You wish to assign me to an EC2 instance to allow it to be accessible from the internet. I am also not associated with an AWS account.

What am I?

Answer 9

Public IP

Question 10

I am a static public IP address that you can request to be allocated to your AWS account.

What am I?

Answer 10

Elastic IP

Question 11

I am region specific and the default limit of me allocated to an AWS account is 5

Answer 11

Elastic IP

Question 12

(Blank) are intended to load balance across EC2 instances in a single region

whereas (blank) is intended to help balance traffic across regions

Answer 12

ELB

DNS load-balancing (Route53)

Question 13

(Blank) is cached so unhealthy targets will still be in the visitors cache for some time

Whereas, (blank) is not cached and will remove unhealthy targets from the target group immediately

Answer 13

DNS (Route 53)

ELB

Question 14

Advantages for using ALIAS records?

Answer 14

• Decreased time to final answer resolution

* Answer looks like an A record

Question 15

What would you use for long term storage?

Answer 15

Amazon RDS

Question 16

What is Elasticache good for?

Answer 16

• Storing Sessions
• Caching data from RDS
• Multi AZ for DR

Question 17

What is RDS good for?

Answer 17

• Storing user data
• Read replicas for scaling reads
• Multi AZ for DR

Question 18

A mechanism to route requests from the same client to the same target

Answer 18

Sticky sessions

Question 19

If you’re in a single instance application, where should you store the data?

Answer 19

EBS

Question 20

If you’re in a distributed application (multi AZ) where would you store the data?

Answer 20

EFS

Question 21

Which is cheaper? EBS or EFS

Answer 21

EBS

Question 22

What is the fastest way to startup an EC2 instance?

Answer 22

Golden AMI

Question 23

Install your applications, OS dependencies beforehand

What is this called?

Answer 23

Golden AMI

Question 24

Mix between Golden AMI & User Data

Answer 24

Elastic Beanstalk

Question 25

For dynamic configuration what should you use?

Answer 25

Bootstrap using User Data

Question 26

Configuring an instance when it first starts, what is this?

Answer 26

Bootstrapping

Question 27

To get applications/instances installed quickly

Answer 27

Instantiate

Question 28

Files, scripts, images, and other multimedia stored on your device after opening an app or visiting a website for the first time.

This data is then used to quickly
gather information about the app or website every time revisited, reducing load time.

Answer 28

Cached data

Question 29

Gives the developer a centric view of deploying an application on AWS

Answer 29

Elastic Beanstalk

Question 30

What will help when designing a stateless application tier?

Answer 30

Store session data in the client HTTP cookies

Store session data in Amazon Elasticache

Store session data in Amazon RDS

Question 31

A suite of applications that manage core business processes.

For instance, accounting, human resources, customer support, purchasing, sales, CRM, and inventory.

Answer 31

Enterprise Resource Planning (ERP)

Question 32

What does single instance mode create?

Answer 32

1 EC2 instance & 1 Elastic IP

Question 33

An image that contains all your software installed and configured so that future EC2 instances can boot up quickly from that AMI.

Answer 33

Golden AMI