NAS
(Network Attached Storage) Dedicated file storage device that provides centralized access to data across a network. NAS devices are commonly used for backup and file sharing
SAN
(Storage Area Network) A dedicated high-speed network that makes storage devices accessible to servers by attaching storage directly to an operating system. It centralizes storage devices so they are easier to manage and communicate faster over media.
AP
(Access Point) Device that allows wireless devices to connect to a wired network using WI-Fi, enabling Internet or network access in a specific location
Controller
A device or software that centrally manages multiple wireless access points
CDN
(Content Delivery Network) Network of distributed servers that delivers web content to users on the basis of their geographical location, optimizing speed and performance
VPN
(Virtual Private Network) Creates a secure, encrypted connection over a less secure network, such as the Internet, allowing remote users to safely access private networks.
QoS
(Quality of Service) Network feature that prioritizes specific types of traffic, such as voice and video, to ensure smooth performance and avoid latency.
TTL
(Time To Live) Field in an IP packet that specifies the number of hops the packet can take before it is discarded, preventing routing loops.
NFV
(Network Functions Virtualization) Replaces traditional hardware appliances with software-based VMs that perform network functions such as routing, switching, or firewalling.
Allows for flexibility in deploying and scaling network services without the need for physical hardware.
VPC
(Virtual Private Cloud) Logically isolated section of a cloud provider’s network where users can deploy resources such as VM’s and databases.
Provides a private, secure environment within the larger public cloud.
Network security groups
Act as virtual firewalls to control inbound and outbound traffic for cloud-based resources.
Define rules that specify allowed or denied traffic on the basis of IP address, protocol, or port.
Network security lists
Define rules for controlling traffic to and from cloud resources but are generally used at the subnet level rather than at the instance level
Internet Gateway
Virtual router that allows resources within a VPC to communicate with the internet
NAT Gateway
(Network Address Translation Gateway) Allows instances within a private subnet to access the internet or other external services without exposing the instances to incoming traffic from the internet
VPN
Allows secure access to a private network over the Internet by encrypting the connection between the user and the network.
Cloud Gateways
Entry and exit points that let traffic move between a cloud network and something outside of it.
Example: Internet gateway, NAT gateway, VPN gateway, Transit gateway, and Application gateway/Loadbalancer
Direct Connect
Provides a dedicated, private connection between an on-premises network and a cloud provider, offering higher bandwidth and lower latency compared to a VPN.
Public Cloud
Cloud-computing model where resources are shared among multiple users and hosted by a third-party provider.
Cost-effective and scalable but less secure than private clouds.
Private Cloud
Dedicated to a single organization, offering enhanced security and control.
Hybrid Cloud
Combines Public and Private clouds, allowing data and applications to be shared between them.
SaaS
(Software as a Service) Delivers software applications over the internet on a subscription basis.
IaaS
(Infrastructure as a Service) Provides virtualized computing resources over the Internet, allowing users to manage and deploy VMs, storage, and networking components.
PaaS
(Platform as a Service) Provides a platform allowing users to build, test, and deploy applications without managing underlying infrastructure.
Scalability
System’s ability to increase or decrease resources as demand fluctuates.
