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aws certified solutions architect - associate (saa-c03) > AWS Fundamentals > Flashcards

AWS Fundamentals Flashcards

1
Q

Is S3 a public or private service?

A

Public

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2
Q

Are VPCs isolated by default?

A

Yes

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3
Q

What are the types of network zones available in AWS?

A
  1. AWS Public zone
  2. AWS private zone
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4
Q

What are the 2 types of AWS deployment?

A
  1. AWS Regions (full deployment of AWS infrastructure: N. Virginia, London, …)
  2. AWS Edge Locations (smaller than regions, but in more number than regions. Only have content distribution services and some edge computing)
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5
Q

What defines an AWS Region?

A
  1. Geographic separation - isolated fault domain
  2. Geopolitical Separation - different governance
  3. Location Control - performance
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6
Q

What are AZ (Availability Zones)?

A

Isolated infrastructure inside a region (can exist 2 or more AZ per region).

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7
Q

What are 2 globally resilient AWS services?

A

IAM and Route53

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8
Q

What is the use of VPC?

A

VPC, aka Virtual Private Cloud, is used to create private networks inside AWS.

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9
Q

Can I have the same VPC for more than 1 account and/or region?

A

No. A VPC is within 1 account and 1 region.

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10
Q

What are the 2 types of VPCs available?

A
  1. Default VPC (maximum 1 per region).
  2. Custom VPC (many per region).
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11
Q

What is a VPC CIDR?

A

Is a range of IP addresses allocated to a VPC.

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12
Q

What is the VPC CIDR of the Default VPC?

A

172.31.0.0/16

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13
Q

How are VPC CIDR subnets are allocated for each Availability Zone?

A

Example:
1. us-east-2a: 172.31.0.0/20
2. us-east-2b: 172.31.16.0/20
3. us-east-2c: 172.31.32.0/20

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14
Q

What is IGW?

A

Internet Gateway

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15
Q

What is SG?

A

Security Group

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16
Q

What is NACL?

A

Network ACL

17
Q

Do Default VPCs have subnets assign public IPv4 addresses?

A

Yes.

18
Q

What is EC2?

A

Elastic Compute Cloud. Provides access to virtual machines, known as instances.

19
Q

Is EC2 public or private service by-default?

A

Private. It uses VPC networking.

20
Q

What means AZ Resilient?

A

It means that instance fails if AZ fails.

21
Q

How is EC2 billed?

A

On-Demand Billing, per second

22
Q

What are the types of storage supported by EC2?

A
  1. Local on-host storage
  2. Elastic Block Store (EBS)
23
Q

Do you have storage billing charges when your EC2 instance is stopped?

A

Yes.

24
Q

What is AMI?

A

Amazon Machine Image.

25
Q

What are AMI permissions available?

A
  1. Public - everyone allowed
  2. Owner - implicit allow
  3. Explicit - specific AWS accounts allowed
26
Q

What is default RDP (Remote Desktop Protocol) port?

A

3389

27
Q

What is default SSH port?

A

22

28
Q

What is S3?

A
  1. Global Storage Platform regional based with AZ replication.
  2. Public service
  3. Economical
  4. It has Objects and Buckets
29
Q

What is the maximum size of a S3 Object?

A

5TB

30
Q

Are S3 Bucket names globally unique?

A

Yes

31
Q

Are there folders in S3?

A

No. It might look like a folder but in reality it is just a name prefix that is appended to the Object name.

32
Q

What are some S3 Bucket name limitations?

A
  1. 3-63 characters
  2. All lower case
  3. No underscores
  4. Start w/ lowercase letter or a number
  5. Can’t be formatted like IP addresses
  6. Maximum buckets per account: 100 soft limit and 1000 hard limit (only using a support request)
33
Q

What is ARN?

A

Amazon Resource Name

34
Q

What are some CloudFormation components?

A
  1. Resources
  2. Description
  3. AWSTemplateFormatVersion (this field is not mandatory, but if you use together with Description then Description needs to be added right after this field)
  4. Metadata
  5. Parameter
  6. Mappings
  7. Conditions
  8. Outputs
35
Q

What is HA?

A

High Availability - minimizing any outrages

36
Q

What is FT?

A

Fault Tolerance - operating through faults

37
Q

What is DR?

A

Disaster Recover - used when HA and FT don’t work

38
Q

What is Route53?

A
  1. Register domains
  2. Host zone files (DNS information) and managed nameservers
  3. Global service w/ single database
  4. Globally resilient (replicated between regions)

aws certified solutions architect - associate (saa-c03) (6 decks)

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