SAA-C03

Question 1

You need to create an exact copy of an existing instance. What can you use in order to do this faster?

Answer 1

AMI (Amazon Machine Images)

Question 2

Sources of AMI

Answer 2

Public AMI, own AMI, Marketplace AMI

Question 3

AMIs are bound in a specific region. True or False?

Answer 3

True

Question 4

You need to store data with fastest I/O performance possible. The data you store will only be temporary (ephemeral). What type of storage can you use?

Answer 4

a. EBS
b. EFS
c. Instance Store
d. USB

Question 5

What EBS Volume Type do you choose if you need high IOPS performance

Answer 5

io1/io2

Question 6

Which EBS Volume Type offers Multi-Attach

Answer 6

io1/io2

Question 7

Multi-Attach only allows up to __ EC2 instances at a time

Answer 7

16

Question 8

EBS Encryption leverages keys from KMS that uses what encryption algorithm

Answer 8

AES-256

Question 9

You cannot directly encrypt existing unencrypted volumes or snapshots.
What are two ways to have encrypted volumes?

Answer 9

1. Create a volume out of a snapshot and allow encryption.
2. Enable encryption so newly created volumes and snapshots will be encrypted.

Question 10

When you create a volume out of an “encrypted” snapshot, the created volume will be unencrypted. True or False?

Answer 10

False

Question 11

When you create a volume out of an “unencrypted” snapshot, you have an option to make it encrypted. True or False?

Answer 11

True

Question 12

You can create a snapshot copy of an EBS and use it on a different AZ or region. True or False?

Answer 12

True

Question 13

EBS can only be attached to EC2s that lie within the same AZ. But if your instances need to share data across multi-AZ, what can you use?

Answer 13

EFS (Elastic File System)

Question 14

2 Performance Modes in EFS

Answer 14

1. General Purpose
2. Max I/O

Question 15

2 Throughput Modes in EFS

Answer 15

1. Bursting
2. Provisioned

Question 16

2 Tiers of EFS

Answer 16

1. Standard
2. IA (Infrequent Access)

Question 17

What protocols are allowed for NLB Health Check

Answer 17

TCP, HTTP, HTTPS

Question 18

What is the GENEVE protocol

Answer 18

6081

Question 19

Load Balancers can balance the request between your servers. But what if you need your user to stay with that instance, because probably a functionality requires it. Like a session or something.

Answer 19

Enable Sticky Sessions in the Target Group

Question 20

Cross-Zone Load Balancing balances the load “evenly” across all instances in multiple AZs. If there are a total of 10 instances, no matter how many AZs hold them, each instance will take 10% of the traffic. True of False?

Answer 20

True

Question 21

If there is two AZs, then the load is split 50-50. And then the load will then be split again in the instances inside the AZ. This behavior happens when cross-zone load balancing is “disabled”.
True or False

Answer 21

True

Question 22

Cross-Zone Load Balancing and Sticky Sessions can be configured on the target group level. True or False

Answer 22

True. Cross-Zone for NLB and CLB can be also configured in the load balancer level

Question 23

You need SNI (Server Name Indication) to make multiple SSL certificates work in a single load balancer

Answer 23

True

Question 24

SSL - SNI (Server Name Indication) only works on ALB and NLB, not CLB.

Answer 24

True

Question 25

What is Connection Draining in ELB?

Answer 25

It's an option where if the instance is stopped or terminated, it won't proceed until all in-flight requests are completed. This helps ensure that users are not impacted by sudden disruptions in service.

Question 26

On a failover (disaster recovery) of Amazon Aurora, promotion of a new master can take up to how long?

Answer 26

Up to 1min

Question 27

Typical cross-region replication of data takes how long

Answer 27

Less than 1 second

Question 28

There can be multiple write instances (master) using this option in Aurora

Answer 28

Multi-master

Question 29

Automated backups can be disabled in both Aurora and RDS

Answer 29

False. Only in RDS, by setting the data retention days to 0.