AWS Base Knowledge Flashcards

Create a foundation for learning deeper AWS services, patterns and features.

1
Q

In a URL what is a subdomain?

A

A subdomain is the xxx.keith-tobin.com.

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2
Q

In a URL what is a subdirectory?

A

A subdirectory is the part of the domain after the /

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3
Q

Does PV AMI support enhance networking?

A

No only HMV AMI

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4
Q

What is the throughput?

A

How much data y

ou can move

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5
Q

What is network speed?

A

How fast you can send data

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6
Q

What is IOPS?

A

How fast you can read and write data to a device

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7
Q

What is ACID in a consistency model?

A

The ability to group transactions and have them stored all or nothing.
- Consistent - Valid
- Isolated - independent and can mess with other transactions
Durable

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8
Q

What is BASe in a consistency model?

A
  • Basic availability - values availability even if data is stale.
  • Soft state - may instantly not be consistent across all stores
  • Eventual consistency - will achieve consistency across all stores eventually.
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9
Q

What is RAID 0

A

Raid 0 stripes data across disks for higher throughput

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10
Q

What is RAID 1

A

Raid 1 mirrors data on disks

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11
Q

What is RAID 5

A

Striping with parity

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12
Q

What is RAID 6

A

Striping with an extra parity

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13
Q

What is RAID 10

A

Raid 1 and 2 combilned

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14
Q

What is High Availability

A

It is the ability to recover from a failure, an example is having a second server that you failover to.

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15
Q

What is fault tolerance?

A

It is the ability of a system to keep working in the event of a failure.

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16
Q

What is DR?

A

You take that somewhere else and start again.

17
Q

What are RTO and RPO?

A

RPO is the recovery point, this is the time between last backup and the outage. RTO is recovery time, this is the time taken to recover from an outage.

18
Q

What is ephemeral storage?

A

This type of storage goes away when the resource is powered off. Instance stored volumes, Amazon ElasticCache.

19
Q

What is transient storage?

A

This is like a queue.

20
Q

What is persistent storage?

A

This is where data is stored even when data is powered off EBS, S3

21
Q

What are the 7 OSI layers?

A
Application (HTTP)
Presentation (SSL)
Session (socket)
Transport (TCP Port)
Network (IP 192.168.0.1)
Data Link (Frames)
Physical (physical ethernet)
22
Q

What are the 5 WAF pillars?

A
Reliability
Preformance
Cost optimization
Operational excellence
Security
23
Q

How many support plans have AWS?

A

3 main support plans

  • Developer
  • Buisness
  • Enterprise
24
Q

What types of storage have we in AWS?

A
  • EBS: Instances storage
  • -gp2: General purpose storage, SSD, burst)
    • io1: provisioned
  • -st1: HDFS, write throughput, larger then GP2
  • -st2: Block archive
  • S3
  • -Standard
  • -Standard IA
  • -Zone IA
  • -Reduce redundancy
  • -Intelligent tiering
  • -Glacier
  • -FSx (SMB, Windows)
  • -EFS (NFS 4)
  • -Storage GW
25
Q

I have data stored in S3 and I need to transform it and push the transformed data to DynamoDB, what AWS service would I use?

A

AWS Glue

26
Q

Is s3 a global or regional service?

A

It is a global service with regional storage. Data is stored across multiple AZs within a single region, 3 or more AZ’s. For OneZone their data is only stored in a single zone.

27
Q

Is Route53 a global or regional service or something else?

A

Route53 operates from AWS edge locations.

28
Q

Are ELBs regional or global?

A

Regional, ELBs are deployed to one or more AZ’s in a region.