EC2

Question 1

Pricing Options - On Demand

Answer 1

Pay by the hour or second

Question 2

Pricing - Spot

Answer 2

Purchased unused capacity at a a discount of up to 90%

Question 3

Reserved Instances

Answer 3

Reserved capacity for known fixed requirements. Up to 72% discount

Question 4

Dedicated

Answer 4

A physical EC2 server dedicated for your use

Question 5

When granting permissions for EC2 instances, you should always groups

Answer 5

True

Question 6

Secret Access Key

Answer 6

Only see this once. If you lose, you’ll have to regenerate

Question 7

Using Roles

Answer 7

The preferred option from a security perspective

Question 8

Policies

Answer 8

Controls a role’s permissions

Question 9

Updating a policy attached to a role takes effect immediately

Answer 9

True

Question 10

You can attach and detach roles running EC2 instances withouth having to stop/terminate them

Answer 10

True

Question 11

All inbound traffic is blocked by default in a security group

Answer 11

True

Question 12

All outbound traffic is blocked by default in a security group

Answer 12

False

Question 13

Bootstrap Scripts

Answer 13

A script that runs the instance first runs

Question 14

User Data vs Metadata

Answer 14

User data is your bootstrap scripts

Metadata is data about your EC2 instances

Question 15

Netowrking - When would you need an ENI

Answer 15

Elastic Network Interface - for basic networking.

Question 16

Networking - when to use Enhanced Networking?

Answer 16

For when you need reliable, high throughput (> 10 Gbps)

Question 17

Networking - when to use EFA?

Answer 17

For when you need to accelerate High Performance Computing or ML

Question 18

Placement Group

Answer 18

A logical grouping of EC2 Instances

Question 19

Cluster Placement Group

Answer 19

Low network latency, high network throughput

Question 20

Spread Placement Groups

Answer 20

Individual critical EC2 Instances

Question 21

Partition Placement Groups

Answer 21

Multiple EC2 instances, HDFS, Cassandra, HBase

Question 22

A cluster placement group can span multiple AZs

Answer 22

False

Question 23

Before moving an existing instance to a placement group, the instance must be…

Answer 23

…in the stopped state