AWS CPC Exam Prep || with 100% Correct Answers.
cloud computing correct answers the on-demand delivery of compute, database storage,
applications, and other IT resources through a cloud services platform via the internet with pay-
as-you-go pricing (kind of like renting someone's computer. Think of the electricity bill. You are
only charged for the power you consumed)
6 advantages of cloud computing correct answers 1. trade capital expense for variable expense
(instead of having to invest heavily in data centers and servers before you know how you're
going to use them, you can pay only when you consume computing resources, and pay only for
how much you consume)
2. Benefit from massive economies of scale (you will never have the same purchasing power as
amazon. They literally build their own servers)
3. Stop guessing about capacity (you will probably buy too much or too little. If you buy too
much, you've wasted money and if you buy too little you will have downtime. the cloud can
scale with your business needs, with no long term contracts)
4. increase speed and agility (it scales infinitely with demand)
5. stop spending money running data centers (focus on what you're good at, not managing
infrastructure. Get someone else to manage that for you)
6. go global in minutes (easily deploy your application in multiple regions around the world with
just a few clicks. This means you can provide lower latency and a better experience for your
customers at minimal cost)
cloud computing types correct answers 1. infrastructure as a service (Iaas)
2. platform as a service (Paas)
3. software as a service (Saas)
Infrastructure as a Service (IaaS) correct answers the delivery of computer hardware capability,
including the use of servers, networking, and storage, as a service. You manage the server which
can be physical or virtual, as well as the operating system. Usually, the data center provider will
have no access to your server. (EC2)
,Platform as a Service (PaaS) correct answers A cloud service in which consumers can install and
run their own specialized applications on the cloud computing network. someone else manages
the underlying hardware and operating systems. You just focus on your applications. Someone
else worries about security patching, updates, maintenance, etc. (elastic beanstalk)
Software as a Service (SaaS) correct answers Software that is hosted centrally on the Internet and
accessed by users with a Web browser. Think of gmail. All you manage is your inbox (or the
software provided to you by Google). Google takes care of the data centers, servers, networks,
storage, maintenance, patching, etc. All you worry about is the software itself and how you want
to use it.
3 types of cloud computing deployments correct answers - Public Cloud
- Hybrid - Mixture of public and private
- Private Cloud (or on premise) - you manage it in your datacenter.
Availability Zone (AZ) correct answers data center (a building filled with servers). An
availability zone may be several data centers, but b/c they're close together, they're counted as 1
availability zone. Each with redundant power, networking and connectivity, housed in separate
facilities.
Region correct answers A geographical area (a physical location in the world). Each region
consists of 2 (or more) availability zones.
Edge locations correct answers endpoints for AWS which are used for caching content. Typically
this consists of CloudFront, Amazon's content delivery network (CDN). Currently over 200 edge
locations.
choosing the right AWS Region? correct answers - data sovereignty laws
- latency to end users
- AWS Services
,understand the different support packages correct answers - Basic - FREE
- Developer - $29/month (scales based on usage)
- Business - $100/month
- enterprise - $15,000/month (comes with TAM - technical account manager)
All support plans come with billing support
Identity and Access Management (IAM) correct answers The security discipline that enables the
right individuals to access the right resources at the right times for the right reasons. It's global,
you don't need to specify a region when dealing with IAM. When you create a user or group, this
is created globally.
You can access the AWS Platform in 3 ways: correct answers - via the console
- programmatically (using the CLI - command line interface)
- using the SDK - Software Developers Kit
root account correct answers Credentials granted to a user that has complete power over the
resource as well as the complete serving system. Windows calls this account administrator. In
macOS and Linux/UNIX, this account is called root. The root account is the email address used
to set up your AWS account. The root account always has full administrative/administrator
access. Do not give these account credentials away to anyone. Instead, create a user for each
individual within your organization. Always secure this root account using multi-factor
authentication.
Group correct answers simply a place to store your users. Your users will inherit all permissions
that the group has. Examples of groups: developers, system administrators, human resources,
finance, etc. To set permissions in a group you need to apply a policy to that group. Policies
consist of Java Script Object Notation (JSON). These are referred to as key value pairs. You have
your key, such as name and the value. e.g. ("name" : "A cloud guru")
What is S3? correct answers Simple Storage Service. Object-based storage. Used by DropBox. A
virtual disc in the cloud for storing files. S3 provides developers and IT teams with secure,
, durable, highly-scalable object storage. Amazon S3 is easy to use, with a simple web services
interface to store and retrieve any amount of data from anywhere on the web. This is a place to
put your flat files. Things like videos, text files, pictures, any kind of "flat file" which means a
file that does NOT change.
- S3 is a safe place to store your files
- It is object based storage
- The data is spread across multiple devices and facilities
the basics of S3 correct answers - s3 is object based (objects are just files) - i.e., allows you to
upload files
- files can be from 0 bytes to 5 TB
- there is unlimited storage
- files are stored in buckets (a folder in the cloud)
- s3 is a universal namespace. that is, names must be unique globally.
- when you upload a file to S3, you will receive a HTTP 200 code if the upload was successful
objects consist of the following correct answers - key (this is simply the name of the object)
- value (this is simply the data and is made up of a sequence of bytes)
- version ID (important for versioning)
- metadata (data about data you're storing)
how does data consistency work for s3? correct answers - read after write consistency for PUTS
of new objects
- eventual consistency for overwrite PUTS and DELETES (can take some time to propagate) - in
other words: if you write a new file and read it immediately afterwards, you will be able to view
that data if you update an EXISTING file or delete a file and read it immediately afterwards, you
may get the older version, or you may not. Basically, changes to objects can take a little bit of
time to propagate.
cloud computing correct answers the on-demand delivery of compute, database storage,
applications, and other IT resources through a cloud services platform via the internet with pay-
as-you-go pricing (kind of like renting someone's computer. Think of the electricity bill. You are
only charged for the power you consumed)
6 advantages of cloud computing correct answers 1. trade capital expense for variable expense
(instead of having to invest heavily in data centers and servers before you know how you're
going to use them, you can pay only when you consume computing resources, and pay only for
how much you consume)
2. Benefit from massive economies of scale (you will never have the same purchasing power as
amazon. They literally build their own servers)
3. Stop guessing about capacity (you will probably buy too much or too little. If you buy too
much, you've wasted money and if you buy too little you will have downtime. the cloud can
scale with your business needs, with no long term contracts)
4. increase speed and agility (it scales infinitely with demand)
5. stop spending money running data centers (focus on what you're good at, not managing
infrastructure. Get someone else to manage that for you)
6. go global in minutes (easily deploy your application in multiple regions around the world with
just a few clicks. This means you can provide lower latency and a better experience for your
customers at minimal cost)
cloud computing types correct answers 1. infrastructure as a service (Iaas)
2. platform as a service (Paas)
3. software as a service (Saas)
Infrastructure as a Service (IaaS) correct answers the delivery of computer hardware capability,
including the use of servers, networking, and storage, as a service. You manage the server which
can be physical or virtual, as well as the operating system. Usually, the data center provider will
have no access to your server. (EC2)
,Platform as a Service (PaaS) correct answers A cloud service in which consumers can install and
run their own specialized applications on the cloud computing network. someone else manages
the underlying hardware and operating systems. You just focus on your applications. Someone
else worries about security patching, updates, maintenance, etc. (elastic beanstalk)
Software as a Service (SaaS) correct answers Software that is hosted centrally on the Internet and
accessed by users with a Web browser. Think of gmail. All you manage is your inbox (or the
software provided to you by Google). Google takes care of the data centers, servers, networks,
storage, maintenance, patching, etc. All you worry about is the software itself and how you want
to use it.
3 types of cloud computing deployments correct answers - Public Cloud
- Hybrid - Mixture of public and private
- Private Cloud (or on premise) - you manage it in your datacenter.
Availability Zone (AZ) correct answers data center (a building filled with servers). An
availability zone may be several data centers, but b/c they're close together, they're counted as 1
availability zone. Each with redundant power, networking and connectivity, housed in separate
facilities.
Region correct answers A geographical area (a physical location in the world). Each region
consists of 2 (or more) availability zones.
Edge locations correct answers endpoints for AWS which are used for caching content. Typically
this consists of CloudFront, Amazon's content delivery network (CDN). Currently over 200 edge
locations.
choosing the right AWS Region? correct answers - data sovereignty laws
- latency to end users
- AWS Services
,understand the different support packages correct answers - Basic - FREE
- Developer - $29/month (scales based on usage)
- Business - $100/month
- enterprise - $15,000/month (comes with TAM - technical account manager)
All support plans come with billing support
Identity and Access Management (IAM) correct answers The security discipline that enables the
right individuals to access the right resources at the right times for the right reasons. It's global,
you don't need to specify a region when dealing with IAM. When you create a user or group, this
is created globally.
You can access the AWS Platform in 3 ways: correct answers - via the console
- programmatically (using the CLI - command line interface)
- using the SDK - Software Developers Kit
root account correct answers Credentials granted to a user that has complete power over the
resource as well as the complete serving system. Windows calls this account administrator. In
macOS and Linux/UNIX, this account is called root. The root account is the email address used
to set up your AWS account. The root account always has full administrative/administrator
access. Do not give these account credentials away to anyone. Instead, create a user for each
individual within your organization. Always secure this root account using multi-factor
authentication.
Group correct answers simply a place to store your users. Your users will inherit all permissions
that the group has. Examples of groups: developers, system administrators, human resources,
finance, etc. To set permissions in a group you need to apply a policy to that group. Policies
consist of Java Script Object Notation (JSON). These are referred to as key value pairs. You have
your key, such as name and the value. e.g. ("name" : "A cloud guru")
What is S3? correct answers Simple Storage Service. Object-based storage. Used by DropBox. A
virtual disc in the cloud for storing files. S3 provides developers and IT teams with secure,
, durable, highly-scalable object storage. Amazon S3 is easy to use, with a simple web services
interface to store and retrieve any amount of data from anywhere on the web. This is a place to
put your flat files. Things like videos, text files, pictures, any kind of "flat file" which means a
file that does NOT change.
- S3 is a safe place to store your files
- It is object based storage
- The data is spread across multiple devices and facilities
the basics of S3 correct answers - s3 is object based (objects are just files) - i.e., allows you to
upload files
- files can be from 0 bytes to 5 TB
- there is unlimited storage
- files are stored in buckets (a folder in the cloud)
- s3 is a universal namespace. that is, names must be unique globally.
- when you upload a file to S3, you will receive a HTTP 200 code if the upload was successful
objects consist of the following correct answers - key (this is simply the name of the object)
- value (this is simply the data and is made up of a sequence of bytes)
- version ID (important for versioning)
- metadata (data about data you're storing)
how does data consistency work for s3? correct answers - read after write consistency for PUTS
of new objects
- eventual consistency for overwrite PUTS and DELETES (can take some time to propagate) - in
other words: if you write a new file and read it immediately afterwards, you will be able to view
that data if you update an EXISTING file or delete a file and read it immediately afterwards, you
may get the older version, or you may not. Basically, changes to objects can take a little bit of
time to propagate.
