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AWS Cloud Practitioner Exam > Technology > Flashcards

Technology Flashcards

1
Q

What is EC2 ?

A

EC2 allows you to rent and manage virtual servers in the cloud.

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2
Q

Are EC2 Instances considered serverless ?

A

No.

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3
Q

What service can you use to preconfigure EC2 instances?

A

Amazon Machine Image (AMI).

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4
Q

How many EC2 free compute hours can you get under the Free Tier plan ?

A

750 Compute hours.

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5
Q

What are some real world examples of EC2 ?

A

Deploy a database or host a website.

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6
Q

What are the four ways to connect to an EC2 instance ?

A
  1. AWS Management Console
  2. Secure Shell (SSH)
  3. EC2 Instance Connect (EIC)
  4. AWS Systems Manager
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7
Q

What is the most common EC2 pricing option ?

A

On-Demand.

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8
Q

Which EC2 pricing option offers the greatest savings ?

A

Spot.

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9
Q

Describe the “On-Demand” pricing option for EC2?

A

Pay for what you use down to the second, nothing else.

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10
Q

Describe the “Spot” pricing option for EC2 ?

A

Spot instances let you make use of unused EC2 Capacity. The request is fulfilled only if there is space to complete it.

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11
Q

Describe the “Reserved Instance” pricing option for EC2 ?

A

RIs let you commit to a certain instance type in a particular region for 1 or 3 years.

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12
Q

Describe “Dedicated Hosts” pricing option for EC2 ?

A

Dedicated hosts allow you to pay for a physical server dedicated to running only YOUR instances and nothing else.

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13
Q

Describe “Saving Plans” pricing option for EC2 ?

A

Saving Plans allow you to commit to compute to certain usage for 1 or 3 years.

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14
Q

What does Elastic Load Balancer (ELB) do ?

A

ELB automatically distributes high traffic across multiple EC2 instances.

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15
Q

What does EC2 Auto-Scaling (EC2 AS) do ?

A

EC2 AS adds or removes EC2 instances automatically across AZs

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16
Q

What is the difference between Elastic Load Balancer (ELB) and EC2 Auto-Scaling (EC2 AS) ?

A

Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple targets and virtual appliances in one or more Availability Zones (AZs). vs ASG or an auto-scaling group enables you to use Amazon EC2 Auto Scaling features such as health check replacements and scaling policies.

17
Q

How to connect to an EC2 Instance via SSH ?

A

A key pair needs to be generated, a private, and public key. The SSH Client on the laptop users the Private Key, whereas the Public Key is used for the EC2 Instance.

18
Q

What is AWS Lambda?

A

Lambda is a serverless compute service that lets you run code without needing a server.

AWS Cloud Practitioner Exam (4 decks)

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