Technology Flashcards

1
Q

What is EC2?

A

service that allows you to rent and manage virtual servers in the cloud

not considered serverless

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2
Q

How can you access EC2?

A
  • AWS management console
  • SSH
  • EC2 instance Connect (EIC)
  • AWS Systems manager via the web browser or shell
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3
Q

Name the 5 different pricing models for EC2

A
Dedicated Hosts 
Reserved Instances 
On-Demand 
Plan - savings 
Spot
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4
Q

On-demand pricing for EC2

A
  • fixed price
  • pay for what you use
  • for unpredictable workloads that won’t run longer than a year
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5
Q

Spot pricing for EC2

A
  • Only if capacity is available
  • workloads can be interrupted
  • 90% off on-demand prices
  • cheapest option
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6
Q

Reserved Instance pricing for EC2

A
  • reservation of instance type in a certain region for 1 or 3 years
  • pay upfront to get discount 75% off on-demand
  • for applications that require capacity reservation
  • sign a contract
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7
Q

Dedicated Hosts for EC2 pricing

A
  • pay for physical server
  • only for you
  • bring your own server bound licenses like Microsoft or Oracle
  • 70% off on-demand
  • host is the physical server, instance runs on host
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8
Q

Savings Plan for EC2

A
  • commit to compute usage for 1 or 3 years
  • lower bill across multiple compute services
  • want flexibility
  • no capacity or reservation
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9
Q

What is Elastic Load Balancing

A

auto distributes your incoming application traffic across multiple EC2 instances

  • think of it like a greeter directing a person to the next line.
  • there are different types of load balances: classic, application, network, gateway
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