NETWORKING 1 [1.3 to 1.5]

End Devices

Desktop Computer

IP Phone

Laptop

Printer

Wireless Tablet

Telepresence Endpoint

Intermediary Devices

Wireless Router

Multilayer Switch

LAN Switch

Router

Firewall Appliance

Network Media

Wireless Media

LAN Media

WAN Media

Network Diagrams

often called topology diagrams, use symbols to represent devices within the network.

Topology Diagrams

Network diagrams are often called as this ___________________

Physical Topology Diagrams

illustrate the physical location of intermediary devices and cable installation.

Logical Topology Diagrams

illustrate devices, ports, and the addressing scheme of the network.

Network Interface Card (NIC)

usually found on routers the barcode

Physical Port

the location where we plug in external devices or cables

Small Home

for family internet

SOHO

Small Office Home Office

Medium/Large

networks for malls

largescale internet cafes

World wide

connectivity of hundred of computers

Network Infrastructure

connection of hardware, software, and framework

Size of the area covered

Number of users connected

Number and types of services available

Network infrastructures vary greatly in terms of:

Local Area Network (LAN)

Wide Area Network (WAN)

Two most common types of networks:

LAN

a network infrastructure that spans a small geographical area.

WAN

a network infrastructure that spans a wide geographical area.

LAN

WAN

Internet

a worldwide collection of interconnected LANs and WANs.

Internet

not owned by any individual or group.

IETF [INTERNET ENGINEERING TASK FORCE]

handles TCP/IP protocols

IP Addresses

ICANN [INTERNET CORPORATION FOR ASSIGNED NAMES AND NUMBERS]

maintenance of databases

security and privacy of world data

IAB [INTERNET ACHITECTURE BOARD]

supervise architectural structure of the world internet

Intranet

a private collection of LANs and WANs internal to an organization that is meant to be accessible only to the organizations members or others with authorization.

Extranet

to provide secure access to their network for individuals who work for a different organization that need access to their data on their network.

Cable

high bandwidth, always on, internet offered by cable television service providers.

DSL [DIGITAL SUBSCRIBER LINES]

high bandwidth, always on, internet connection that runs over a telephone line.

Cellular

uses a cell phone network to connect to the internet.

Satellite

major benefit to rural areas without Internet Service Providers

Dial-up telephone

an inexpensive, low bandwidth option using a modem.

Dedicated Leased Line

These are reserved circuits within the service provider's network that connect distant offices with private voice and/or data networking.

Ethernet WAN

This extends LAN access technology into the WAN.

DSL [DIGITAL SUBSCRIBER LINES]

Business DSL is available in various formats including Symmetric Digital Subscriber Lines (SDSL).

Satellite

This can provide a connection when a wired solution is not available.

Converged networks

deliver data, voice, and video over the same network infrastructure.