ELB/ALB/NLB

Question 1

Is request tracing supported on an ALB?

Answer 1

Yes, and it’s enabled by default.

Question 2

Can I configure a security group for the front-end of an ALB?

Answer 2

Yes.

Question 3

Is backend server authentication supported with an ALB?

Answer 3

No, only encryption is supported.

Question 4

What is the maximum number of load balancers per region?

Answer 4

20

Question 5

NLBs provide __________ load balancing.

Answer 5

TCP (layer 4)

Question 6

Can I convert a Classic Load Balancer to an ALB or vice versa?

Answer 6

No.

Question 7

What protocols does a Classic LB support?

Answer 7

HTTP, HTTPS, SSL/TLS, TCP

Question 8

If you need flexible application management and TLS termination then Amazon recommends you use a/an __________ load balancer.

Answer 8

Application

Question 9

When should you use a Classic Load Balancer?

Answer 9

When your application is build within the EC2 Classic network.

Question 10

If you need extreme performance and static IP for your application, Amazon recommends you use a/an __________ load balancer.

Answer 10

Network.

Question 11

True or False: You can configure an EC2 instance to only accept traffic from an ALB.

Answer 11

True.

Question 12

What protocols does an ALB support?

Answer 12

HTTP, HTTPS

Question 13

Does an ALB support SSL/TLS termination?

Answer 13

Yes, but you must install an SSL cert on the ALB so it can terminate the connection and decrypt requests.

Question 14

Can I migrate to NLBs from Classic LBs?

Answer 14

Yes.

Question 15

What OSI layer do NLBs operate at?

Answer 15

Layer 4 (transport layer)

Question 16

What protocols does an NLB support?

Answer 16

TCP

Question 17

Which OSI layer do ALBs operate at?

Answer 17

Layer 7 (application layer)