Communicating Computers

Question 1

Answer: A virtual server in the clouds

Answer 1

Question: What is Amazon EC2?

Question 2

Name the four different ways to pay

Answer 2

1. On-Demand
2. Reserved
3. Spot
4. Dedicated Hosts

Question 3

The nonmonic device used for AWS Courses is:

Answer 3

FIGHT DR MCPXZ

Question 4

How do computers communicate?

Answer 4

Via ports:

• Linux = SSH (Port 22)
• Microsoft = Remote Desktop Protocol (Port 3389)
• HTTP (Port 80)
• HTTPS (Port 443)

Question 5

Virtual firewalls in the cloud are known as ________

Answer 5

Security Groups; ports need to be open to use them.

Question 6

Always design for failure by doing this:

Answer 6

Having one EC2 instance in each Availability Zone

Question 7

What are the three ways to interact with AWS?

Answer 7

1. Console
2. Command Line Interface (CLI)
3. Software Development Kits (SDKs)

Question 8

True or False: Access key IDs are more secure than Roles.

Answer 8

False

Question 9

When can you apply roles to EC2 instances?

Answer 9

Anytime! Changes are immediate.

Question 10

True or False: Roles are universal and there’s no need to set-up regions.

Answer 10

True

Question 11

Name the three different flavors of Load Balancers:

Answer 11

1. Application Load Balancers - Layer 7 (make intelligent decisions)
2. Network Load Balancers - Extreme performance or static sites
3. Classic Load Balancers - Test & Dev & keep costs low

Question 12

A database is like a _________ _________.

Answer 12

Traditional spreadsheet

Question 13

These have been around since the 70s. Think - databases, tables, rows, fields (columns). What is it?

Answer 13

A relational database

Question 14

Relational databases on AWS is known as:

Answer 14

RDS

Question 15

What are the RDS types?

Answer 15

1. SQL
2. MySQL
3. PostgreSQL
4. Aurora
5. MariaDB
6. Oracle

Question 16

Name the two features for RDS:

Answer 16

Multi-AZ - for disaster recovery & Read replicas - for performance

Question 17

A collection is equal to ________ for non-relational databases.

Answer 17

Table

Question 18

A non-relational database document is also known as a ______.

Answer 18

Row

Question 19

What are Key Value Pairs when speaking about non-relational databases?

Answer 19

Fields

Question 20

Two things non-relational databases are _____________________ and _________________.

Answer 20

1. Columns in the table can vary

2. It won’t affect other rows in database

Question 21

If you have a DynamoDB, you have a __________.

Answer 21

Non-relational databases

Question 22

On-Demand pricing is good when:

Answer 22

• Pay a fixed rate by the hour or second w/ no commitment
• Useful for users who want low cost and flexibility of EC2
• Good for apps with fluctuating workloads that cannot be interrupted, or being developed or tested for the firs time

Question 23

Reserved pricing is best for:

Answer 23

• Huge discounts, locked into 1 or 3 years terms, more you pay upfront the better discount you get
• Good for apps with steady usage
• Discount helps reduce overall computing costs

Question 24

Choose Spot pricing if:

Answer 24

• Bid a price you want to pay, when it hits your bid price it provisions for you
• Apps that have flexible start and end times
• Only feasible at low compute prices
• Users with urgent computing needs for large amounts of additional capacity

Question 25

Dedicated Hosts are an option for:

Answer 25

• When you use your existing server-bound software licenses

- Good for regulatory requirements and licensing that does not support multi tenant virtualization

Question 26

Name the types of distribution

Answer 26

web distribution and RTMP