2nd pt of infrastructure 2.0

RJ45

Ethernet network connector.

SFP (Small Form-factor Pluggable)

Fiber optic networking connector.

Bluetooth

Short-range wireless communication technology.

NFC(near field communication)

Very short-range wireless communication.

802.11x

Family of Wi-Fi networking standards

Crimper

Tool used to attach connectors to cables.

Cable Tester

Tool used to verify cable functionality.

Radio frequency (rf)

Wireless communication using radio waves

Lightning connector

Apple proprietary connector.

VGA

Analog video connector.

DVI

Digital video connector.

HDMI

Connector carrying digital audio and video.

Display port

Digital display connector supporting high resolutions.

USB-C

Reversible connector supporting power, data, and video

USB-A

Standard rectangular USB connector.

USB-B

Square-shaped USB connector commonly used on printers

THUNDERBOLT

High-speed interface supporting data, video, and power

MIRRORING

Displaying identical content on multiple screens

CASTING

Wirelessly transmitting media to another display.

Virtualization

Running multiple virtual systems on one physical machine

Hypervisor

Software that creates and manages virtual machines

Guest OS

Operating system running inside a virtual machine

On premises deployment

Resources located within an organization's facility.

Cloud deployment

Resources hosted by a cloud provider.

Hybrid deployment

Combination of cloud and on-premises resources.

PaaS(platform as a service)

Cloud service providing a development platform

IaaS ( infrastructure as a service)

Cloud service providing virtualized hardware resources.

SaaS (software as a service)

Cloud service delivering software over the internet.

Fiber optic internet

Internet service using light transmitted through fiber cables

Cable internet

Internet service delivered through cable TV infrastructure

DSL

Internet service delivered through telephone lines.

Wireless internet

Internet service delivered without physical cables.

Satellite internet

Internet service delivered without physical cables.

Cellular internet

Internet service using mobile network towers.

IP address

Logical address identifying a device on a network.

MAC adress

Unique physical address assigned to a network adapter.

Port number

Logical communication endpoint used by applications.

File transfer service

Network service used to move files between devices.

Email service

Network service used to send and receive messages

Secure web browsing

Accessing websites using encrypted HTTPS connections.

Peer to peer model

Network model where devices share resources directly

Modem

Device connecting a network to an internet service provider

Rouder

Device directing traffic between networks

Switch

Device connecting devices within a LAN.

Access point(AP)

Device providing wireless network access.

Firewall

Security device that filters network traffic.

LAN(local area network)

Security device that filters network traffic.

WAN(wide area network)

802.11n

Wi-Fi standard operating on 2.4GHz and 5GHz.

802.11ac

Faster Wi-Fi standard operating primarily on 5GHz

802.11ax(WiFi 6)

Modern Wi-Fi standard supporting 2.4GHz, 5GHz, and 6GHz.

2.4GHz Band

Longer range but more interference.

5GHz Band

Faster speeds but shorter range.

6GHz Band

Fastest speeds with the least congestion.

Interference

Unwanted signals that disrupt wireless communication.

Attenuation

Weakening of signal strength over distance or obstacles.