Prep for AWS Certified Cloud Practitioner Exam - Core Services

Question 1

What is the Technology Domain

Answer 1

33% of the certification exam (largest portion)

• Four parts
• Define methods of deploying and operating in the AWS cloud
• Define the AWS global infrastructure
• Identify the core AWS services
• Identify resources for technology support

Question 2

What is Elastic Compute Cloud?

Answer 2

EC2

• Virtual server running on AWS
• Config by a number of virtual CPUs, GBs of RAM, size/type of storage, and network speed

Question 3

What is Elastic Beanstalk?

Answer 3

• Deploy and scale web applications by uploading your code

- Handles the deployment process including capacity, load balancing auto scaling and health monitoring, provisioning

Question 4

What languages does Elastic Beanstalk support?

Answer 4

Java, .NET, PHP, Node.js, Python, Ruby, Go and Docker

Question 5

What is Elastic Load Balancing?

Answer 5

• Automatically distributes web traffic to different servers, so that anyone server is not overloaded and crashes
• Fault-tolerant
• Monitor health of servers

Question 6

What is Lambda?

Answer 6

• Runs code (a lambda function) in response to an event, like hitting a button on a site to buy an item
• Only pay for the time the code is running and each event trigger
• No need to provision or manage servers

Question 7

What is Lightsail?

Answer 7

• Preconfigured and ready-to-use operating systems, web apps, and development stacks
• Easily scale and deploy
• One click to launch services, like wordpress, windows os, ubuntu and node.js

Question 8

What are your options for deploying code to the AWS Cloud?

Answer 8

• AWS Management Console
• AWS CLI
• AWS SDK

Question 9

What are Availability Zones?

Answer 9

• AWS data centers around the world
• Independent of each other in network and power source
• around 6 dozen zones

Question 10

What is a Region?

Answer 10

• Region is made up of two or more availability zones

- Compliances and resources vary by region

Question 11

What is a high availability?

Answer 11

• Resources that have duplicate copies in multiple availability zones or regions
• Resiliency: Ability to provide uninterrupted performance, even during natural disasters
• Redundancy: Multiple copies of data in different data centers

Question 12

Give two examples of infrastructure as code

Answer 12

AWS Elastic Beanstalk
AWS Lamdba
AWS CloudFormation

Question 13

Describe Amazon S3

Answer 13

• Object storage service
• High Availability, security and performance
• Scalable
• Charged for what you use

Question 14

What are the S3 tiers

Answer 14

• Standard
• Intelligent- Tiering
• Standard-Infrequent Access
• One Zone-Infrequent Access
• Glacier
• Glacier Deep Archive

Question 15

What is Elastic Block Store?

Answer 15

EBS

• Unformatted block devices attached to an EC2 instance to increase storage
• Add multiple EBS volumes to one EC2 instance
• Use as file systems or hard drives
• Dynamically change configurations to attached volumes

Question 16

What is AWS Snowball?

Answer 16

• Data migration tool
• AWS will physically ship you a snowball to move your data onto, then ship back
• Can move 50 terabytes with regular snowball, up to 100 petabytes with a snowmobile (45 foot long shipping container)
• Free for 10 days of onsite usage
• Service fee per job starting at 200$
• Stored in S3 with storage fees, but no transfer fee

Question 17

What is AWS Storage Gateway?

Answer 17

• Hybrid storage solution

- Feeds on premises storage with cloud storage, integrates on prem with AWS cloud storage services via a virtual machine

Question 18

What is DynamoDB?

Answer 18

• Server less, nearly unlimited throughput and storage, NoSQL database
• Automatically scales your tables

Question 19

What is Amazon Relational Database Service?

Answer 19

RDS

• Setup, operate and scale a relational database
• Pay what you use
• Compatible with PostreSQL, MySQL, MariaDB, Oracle Database, Microsoft SQL Server and Amazon Aurora

Question 20

What is Amazon Aurora

Answer 20

• Managed by RDS
• Monitor through AWS alerting services
• Compatible with MySQL and PostgreSQL, but five times faster
• Supports up to 64 tbs per instance

Question 21

What is Amazon Redshift

Answer 21

• Petabyte-scale data warehouse service
• Super fast, super cheap
• Integrate with data lakes
• Analyze data from different sources

Question 22

What is Virtual Private Cloud?

Answer 22

VPC

• Isolated section in the cloud to deploy your resources (your corner of the cloud)
• Allows setting up security groups, network access control lists

Question 23

What is CloudFront?

Answer 23

• AWS Global CDN

- Integrates with AWS services to provide optimal performance

Question 24

What is Route53?

Answer 24

• Domain name registrar

- Connect user requests to infrastructure on AWS or outside of AWS as a DNS service

Question 25

What is CloudFormation?

Answer 25

• Allows Templates or recipes for resource deployment in AWS
• Provision and deploy fully configured infrastructure
• Free to use
• Infrastructure as code

Question 26

What is AWS CloudTrail?

Answer 26

• Helps track user activity and API usage
• Discover/troubleshoot security and operational issues
• Provide visibility into user/resource activities
• Auto response to security threats

Question 27

What is AWS CloudWatch?

Answer 27

• Monitoring and management system for AWS Infrastructure
• Natively integrated with over 70 AWS services
• System wide visibility into resource utilitization, application performance, and operational health

Question 28

What are the differences between CloudWatch and CloudTrail?

Answer 28

CloudTrail audits logs, while CloudWatch monitors live activity and can react to events