EC2 101 Flashcards

1
Q

What is EC2?

A

Elastic Cloud Compute - Compute based service that has a server!

Reduces time required to obtain and boots servers in minutes allowing scale up and down.

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2
Q

What is On Demand?

A

Allows you to pay a fixed rate by hour/second with no committment

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3
Q

What is Reserved?

A

offers significant discounts on hourly charge with contracts of 1 to 3 year terms

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4
Q

What is Spot?

A

Enables you to bid whatever price you want for instance capacity providing greater savings. flexible start and end times

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5
Q

What is dedicated hosts?

A

Physical Ec2 server dedicated for use. Helps reduce costs by using your own hardware

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6
Q

True /False

If Spot Instance is terminated by Amazon EC2, you will be charged for partial hour of usage vs terminating instance yourself.

A

False. You will not be charged if AWS cancels, if you cancel you will be charged.

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7
Q

What is EBS?

A

Elastic Base Storage - a virtual disc in the cloud that virtual servers run off

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8
Q

What are the two types of EBS Volume Types?

A

SSD and Magnetic

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9
Q

What is General Purpose SSD?

A

Balances price and performance

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10
Q

What is Provisioned IOPS SSD?

A

Highest performance for low latency and high throughput

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11
Q

What is the Lowest cost volume of Magnetic?

A

Cold HDD (SC1)

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12
Q

What do you use to connect EC2 that unlocks the public?

A

Private key

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13
Q

What is a security group?

A

A virtual firewall in the cloud. You need to open ports in order to use them

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14
Q

What is Lambda?

A

A compute service that is serverless

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15
Q

True /False

You should always design for failure with security groups. Have one EC2 instance in each availability zone

A

True

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16
Q

Security roles are more ______ , while secret access keys are easier to _______.

A

secure, manage

17
Q

When you apply roles to an EC2 instance, the change takes place when?

A

Immediately

18
Q

T/F

Roles are Universal. You do not need a specific region for them.

A

True

19
Q

What is an Elastic Load Balancer?

A

A load balancing service that automatically distributes incoming application traffic and scales resources to meet traffic demands.

20
Q

What are the 3 types of Elastic Load Balancers?

A

Application Load Balancers
Network Load Balancers
Classic Load Balancers

21
Q

Which Load balancer handles Static IP addresses and performance?

A

Network Load Balancer

22
Q

Which Load Balancer is the cheapest?

A

Classic Load Balancer

23
Q

Which ELB is Layer 7 aware and focuses on application

A

Application Load Balancer