Cloud Essentials Certification Prep
Platform as a Service - ANSWER: Cloud model that provides developers with a platform
to build, deploy, manage applications; Ex: Azure
Software as a Service - ANSWER: Users access software over the internet on a
subscription basis; Commonly used for enterprise resource planning; Salesforce, M365,
Dropbox
Infrastructure as a Service - ANSWER: Virtualized computing resources over the
internet: Virtual machines, storage, networking; Users have control over operating
systems; Pay for what they need; AWS, MS Azure
Public Cloud - ANSWER: Owned by a 3rd party, shared among users, scalable, cost
effective, global availability: Ex: AWS, AZURE: Pay only for what you consume; On-
demand scalability; managed infrastructure; Security concerns and limited control by
end users
Private Cloud - ANSWER: Exclusive to organization; Enhanced control and security,
limited scalability; Drawbacks: Higher costs (falls on org); limited scalability since
organization is responsible for own resources
Hybrid Cloud - ANSWER: Flexible, increased complexity; Benefits: Disaster Recovery,
Data Placement; Drawbacks: Data Transfer and Integration is a tedious process across
cloud services
Elasticity - ANSWER: The ability to quickly and dynamically scale computing resources
up or down based on current demand (rubber band)
Self-Service - ANSWER: Direct control and autonomy over computing resources without
needing to go through a lengthy manual process or rely on IT administrators
Scalability - ANSWER: The ability of a system to handle increasing workloads or
accommodate growth without sacrificing performance or stability
Broad Network Access - ANSWER: Cloud Services can be accessed from anywhere
over standard network connections
Pay-As-You-Go - ANSWER: Otherwise known as Usage-Based pricing, where users
are only charged based on their actual usage of resources
, Availability - ANSWER: Ability of cloud services to be consistently accessible and
operational
Shared Responsibility Model - ANSWER: Defines the division of responsibility between
the CSP and the cloud customer in terms of securing and managing the cloud
environment
Direct Connect - ANSWER: Dedicated network connection provided by cloud service
providers; Allows to establish a direct and private link between on-premises
infrastructure and the CSP data centers (Higher security); Usually for large amounts of
data
VPN - ANSWER: Secure and encrypted connection that allows users to connect to the
cloud environment over the public internet; Creates a virtual tunnel between the user's
device/network and the CSP's network
Remote Desktop Protocol (RDP) - ANSWER: Technology that allows users to remotely
access and control a computer or server from another device
Secure Shell (SSH) - ANSWER: A secure network protocol that allows secure remote
access to network devices or servers and management of these devices and servers
Hypertext Transfer Protocol Secure (HTTPS) - ANSWER: Adds an extra layer of
security by encrypting the data exchanged between a user's web browser and a
website's server
Software Defined Networking - ANSWER: An approach to networking that separates the
network control plane from the underlying physical infrastructure
Load Balancing - ANSWER: Technique used in computer networks and server
infrastructure to distribute incoming network traffic across multiple servers or resources
Round Robin - ANSWER: Equal distribution of traffic among servers
Least Connection - ANSWER: Traffic is directed to the server with the fewest
connections
Weight Round Robin - ANSWER: Each server is assigned a weight and traffic is
distributed based on the assigned weight
IP Hash - ANSWER: Traffic is distributed based on the source or destination IP
address; Requests from same clients are sent to the same server
Session Persistence - ANSWER: Where a client's requests are consistently directed to
the same server for the duration of their session
Platform as a Service - ANSWER: Cloud model that provides developers with a platform
to build, deploy, manage applications; Ex: Azure
Software as a Service - ANSWER: Users access software over the internet on a
subscription basis; Commonly used for enterprise resource planning; Salesforce, M365,
Dropbox
Infrastructure as a Service - ANSWER: Virtualized computing resources over the
internet: Virtual machines, storage, networking; Users have control over operating
systems; Pay for what they need; AWS, MS Azure
Public Cloud - ANSWER: Owned by a 3rd party, shared among users, scalable, cost
effective, global availability: Ex: AWS, AZURE: Pay only for what you consume; On-
demand scalability; managed infrastructure; Security concerns and limited control by
end users
Private Cloud - ANSWER: Exclusive to organization; Enhanced control and security,
limited scalability; Drawbacks: Higher costs (falls on org); limited scalability since
organization is responsible for own resources
Hybrid Cloud - ANSWER: Flexible, increased complexity; Benefits: Disaster Recovery,
Data Placement; Drawbacks: Data Transfer and Integration is a tedious process across
cloud services
Elasticity - ANSWER: The ability to quickly and dynamically scale computing resources
up or down based on current demand (rubber band)
Self-Service - ANSWER: Direct control and autonomy over computing resources without
needing to go through a lengthy manual process or rely on IT administrators
Scalability - ANSWER: The ability of a system to handle increasing workloads or
accommodate growth without sacrificing performance or stability
Broad Network Access - ANSWER: Cloud Services can be accessed from anywhere
over standard network connections
Pay-As-You-Go - ANSWER: Otherwise known as Usage-Based pricing, where users
are only charged based on their actual usage of resources
, Availability - ANSWER: Ability of cloud services to be consistently accessible and
operational
Shared Responsibility Model - ANSWER: Defines the division of responsibility between
the CSP and the cloud customer in terms of securing and managing the cloud
environment
Direct Connect - ANSWER: Dedicated network connection provided by cloud service
providers; Allows to establish a direct and private link between on-premises
infrastructure and the CSP data centers (Higher security); Usually for large amounts of
data
VPN - ANSWER: Secure and encrypted connection that allows users to connect to the
cloud environment over the public internet; Creates a virtual tunnel between the user's
device/network and the CSP's network
Remote Desktop Protocol (RDP) - ANSWER: Technology that allows users to remotely
access and control a computer or server from another device
Secure Shell (SSH) - ANSWER: A secure network protocol that allows secure remote
access to network devices or servers and management of these devices and servers
Hypertext Transfer Protocol Secure (HTTPS) - ANSWER: Adds an extra layer of
security by encrypting the data exchanged between a user's web browser and a
website's server
Software Defined Networking - ANSWER: An approach to networking that separates the
network control plane from the underlying physical infrastructure
Load Balancing - ANSWER: Technique used in computer networks and server
infrastructure to distribute incoming network traffic across multiple servers or resources
Round Robin - ANSWER: Equal distribution of traffic among servers
Least Connection - ANSWER: Traffic is directed to the server with the fewest
connections
Weight Round Robin - ANSWER: Each server is assigned a weight and traffic is
distributed based on the assigned weight
IP Hash - ANSWER: Traffic is distributed based on the source or destination IP
address; Requests from same clients are sent to the same server
Session Persistence - ANSWER: Where a client's requests are consistently directed to
the same server for the duration of their session
