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AWS SA > EC2 > Flashcards

EC2 Flashcards

1
Q

EC2

4 Pricing Options for EC2

A

On-Demand
Reserved
Spot
Dedicated Host

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2
Q

EC2

What EC2 Instance type is brought up-front in 1 or 3 year blocks

A

Reserved

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3
Q

EC2

What type of Reserved Instance allows the instance type to be changed

A

Convertable RI’s

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4
Q

EC2

What type of Reserved Instance is best for repeated, predictable spikes in use

A

Scheduled RI’s

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5
Q

EC2

What type of Instance is best when multi-tennant virtualisation isnt allowed

A

Dedicated Host

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6
Q

EC2

Rather than passing credentials around to authenticate between services we should use….

A

Roles

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7
Q

EC2

Changes to SG’s take effect ….

instantly / not instantly

A

instantly

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8
Q

EC2

You can attach …. security groups to an EC2 instance

one / many

A

many

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9
Q

EC2

A security group can be attached to …. EC2 instances

one / many

A

many

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10
Q

EC2

SG inbound traffic is …. by default

allowed / blocked

A

blocked

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11
Q

EC2

SG outbound traffic is …. by default

allowed / blocked

A

allowed

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12
Q

EC2

What provides data about your EC2 instance

A

EC2 Instance Metadata

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13
Q

EC2

What contains your EC2 Bootstrap scripts

A

EC2 Instance Userdata

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14
Q

EC2

Which network Interface is best for low cost

A

Elastic Network Interface

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15
Q

EC2

What are the two available network interfaces for your EC2 instance

A

Elastic Network Interface
Enhanced Networking

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16
Q

EC2

Which network interface is best for high performance networking

A

Enhanced Networking

17
Q

EC2

What are the three placement group options for your EC2 instances

A

Cluster
Spread
Partition

18
Q

EC2

Which EC2 placement group is best for low-latancy, high throughput within a single AZ

Cluster, Spread or Partition

A

Cluster

19
Q

EC2

Which EC2 placement group is best for a small number of buisness critical EC2 instances

Cluster, Spread or Partition

A

Spread

20
Q

EC2

Which EC2 placement group is best when you have multipte EC2 instances with redundancy built it

Cluster, Spread or Partition

A

Partition

21
Q

EC2

How many minutes warning are you given before your Spot instance is stopped / terminated

A

2 minutes

22
Q

EC2

What service can you use along side on-prem VMWare for cloud migrations or DR

A

AWS vCentre

23
Q

EC2

What services can you install on-prem to give access to AWS like infra in your datacentre

A

Outpost

24
Q

EC2

When an Auto Scaling group is “scaling in”, using the default termination policy, which EC2 instances are terminated first?

A

The instance launched from the oldest launch configuration.

The default termination policy is designed to help ensure that your instances span Availability Zones evenly for high availability.

AWS SA (29 decks)

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