Network+ 1.3 Cloud Computing: Models, Security, and Network Scalability

SCALABILITY

EXPAND NETWORK WITHOUT IMPACTING CURRENT DEVICES

COST-EFFICIENCY

SAVINGS BECAUSE LESS HARDWARE NEEDED

ACCESSIBILITY

FILES AVAILABLE FROM ANYWHERE

REDUNDANCY

DATA AND SERVICES BACKUP

IaaS

Virtual Machines

PaaS

Development services

SaaS

Applications available over the internet

Public Cloud

Data delivered over the internet (Dropbox, Google Drive)

Private Cloud

Cloud services for one organization (O365)

Hybrid Cloud

Model with some aspects of public and some private

Community Cloud

Shared cloud for specific group

VPN

Secure tunnel over internet

Direct Connect

Dedicated connection to the cloud

Internet-based access

Standard web access to cloud services

NSG

Virtual firewall for cloud services

NSL

Traffic flow controlled at subnet level, IP addresses, ports

NFV

Virtualization that improves network management and scalability

VPC

Private cloud logically isolated into a private cloud

VPN Gateway

Secures remote access for employees

NAT Gateway

Allows internet access for virtual machines to download updates

Firewall Gateway

Traffic filtering for cloud resources

Internet Gateway

Direct internet access for a public website

Traffic flow

Controlled at subnet level, IP addresses, ports