Load Balancers

Question 1

Load balancer that handles HTTP, HTTPS, TCP

Answer 1

Classic Load Balancer

Question 2

Load balancer that handles HTTP, HTTPS, WebSocket

Answer 2

Application Load Balancer

Question 3

Load balancer that handles TCP, UDP, TLS

Answer 3

Network Load Balancer

Question 4

T/F Load Balancers can scale instantaneously

Answer 4

False

Question 5

LB that is a great fit for micro services & container-based apps

Answer 5

ALB

Question 6

Multiple HTTP apps across machines can be referred to as

Answer 6

Target Groups

Question 7

ALB can route to ___ target groups

Answer 7

Multiple

Question 8

ALB Health checks are at the ____ level

Answer 8

Target Group

Question 9

To get true IP of the client from ALB, inspect this header

Answer 9

X-Forwarded-For

Question 10

To get Port from ALB, inspect this header

Answer 10

X-Forwarded-Port

Question 11

To get Proto from ALB, inspect this header

Answer 11

X-Forwarded-Proto

Question 12

Use this load balancer to handle millions of request per second

Answer 12

NLB

Question 13

Load balancer that has less latency than ALB

Answer 13

NLB

Question 14

Load balancer used for extreme performance, TCP or UDP traffic

Answer 14

NLB

Question 15

Way to have same client always redirected to the same instance behind load balancer

Answer 15

Stickiness

Question 16

Load Balancer Stickiness works for ___ & ___ load balancers

Answer 16

Classic; Application

Question 17

Load balancer instance distributes evenly across all registered instances in all AZ

Answer 17

Cross-Zone

Question 18

CLB has Cross-Zone load balancing ___ by default

Answer 18

Disabled

Question 19

ALB has Cross-Zone load balancing _____

Answer 19

Always On

Question 20

NLB has Cross-Zone load balancing ___ by default

Answer 20

Disabled

Question 21

Solves the problem of loading multiple SSL certificates onto one web server

Answer 21

Server Name Indication

Question 22

SNI works on ___ & ___ load balancers

Answer 22

ALB; NLB

Question 23

Time to complete “in-flight requests” while the instance is de-registering or unhealthy

Answer 23

Connection Draining

Question 24

To update an ASG:

Answer 24

Provide new launch config/launch template

Question 25

IAM roles attached to an ASG will:

Answer 25

Get assigned to EC2 instances

Question 26

This type of scaling is an example of “I want the average ASG CPU to stay at around 40%”

Answer 26

Target Tracking Scaling

Question 27

This type of scaling is an example of “When a CW alarm is triggered (CPU > 70%), then add 2 units”

Answer 27

Simple/Step Scaling

Question 28

This type of scaling is an example of “Increase the min capacity to 10 at 5pm on Fridays”

Answer 28

Scheduled Actions Scaling