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AWS > SAA-C03 > Flashcards

SAA-C03 Flashcards

1
Q

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

A

AMI (Amazon Machine Images)

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2
Q

Sources of AMI

A

Public AMI, own AMI, Marketplace AMI

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3
Q

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

A

True

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4
Q

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?

A

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

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5
Q

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

A

io1/io2

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6
Q

Which EBS Volume Type offers Multi-Attach

A

io1/io2

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7
Q

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

A

16

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8
Q

EBS Encryption leverages keys from KMS that uses what encryption algorithm

A

AES-256

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9
Q

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

A
  1. Create a volume out of a snapshot and allow encryption.
  2. Enable encryption so newly created volumes and snapshots will be encrypted.
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10
Q

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

A

False

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11
Q

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

A

True

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12
Q

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

A

True

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13
Q

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?

A

EFS (Elastic File System)

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14
Q

2 Performance Modes in EFS

A
  1. General Purpose
  2. Max I/O
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15
Q

2 Throughput Modes in EFS

A
  1. Bursting
  2. Provisioned
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16
Q

2 Tiers of EFS

A
  1. Standard
  2. IA (Infrequent Access)
17
Q

What protocols are allowed for NLB Health Check

A

TCP, HTTP, HTTPS

18
Q

What is the GENEVE protocol

A

6081

19
Q

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.

A

Enable Sticky Sessions in the Target Group

20
Q

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?

A

True

21
Q

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

A

True

22
Q

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

A

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

23
Q

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

A

True

24
Q

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

A

True

25
Q

What is Connection Draining in ELB?

A

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.

26
Q

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

A

Up to 1min

27
Q

Typical cross-region replication of data takes how long

A

Less than 1 second

28
Q

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

A

Multi-master

29
Q

Automated backups can be disabled in both Aurora and RDS

A

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

AWS (1 decks)

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