Commerce 2KA3-Week 7 Chapter 7

What is broadband?

Fast internet (100 Mbps download, 20 Mbps upload).

• What is NOS? networking operating system

• Software that manages and controls a network.

A hub is a

simple device that connects network components, sending a packet of data to all other connected device

Switch Device

s more intelligence than a hub and can filter and forward data to a specified destination.

: What is a router?

Sends data(packets) between different networks

What is SDN? software-define networking

Network controlled by a central software

What is packet switching?

Data is split into small packets, sent, then reassembled

What is a protocol?

Rules for communication on a network

What is TCP/IP?

Dominant model for achieving connectivity among different networks

-Main system that sends, routes, and rebuilds data.

What is peer-to-peer?

Computers share directly (no main server).

What is bandwidth?

 capacity of a communications link to transmit data

The capacity of data that can be sent over a network per second.

The speed of data

 refers to the rate at which data can be transmitted

What is an IP address?

Unique number for a device on the internet.

What is IPv6?

New system with more IP addresses.

Digital subscriber line (DSL)

Internet through phone lines.

What is a T1 line?

.1.54 MbPs

T3 line

145 mps

Website:

A collection of web pages linked to a home page.

• What is HTTP?

Rules for how web pages are sent and received on the internet.

What is a URL?

The address of a webpage

• What is the dark web?

• :

• A: Hidden part of the internet not searchable and used for anonymity.

What is SEO?  Search engine optimization (

Improving a website to rank higher in search results

What is semantic search?

Search that understands meaning, not just keywords

What is RSS? Really Simple Syndication

Automatically collects updates from websites and sends them to you.

Aggregator

What is a social network?

An online platform to connect with people

• What is Internet2?

A group working on future/advanced internet technology.

What is the metaverse?

A 3D virtual world using VR/AR where people interact online

What is Web3?

A decentralized internet controlled by users (uses blockchain)

What is 3G?

Older mobile network with slow speeds (now mostly gone)

What is 4G?

Faster network for streaming and browsing

• What is 5G?

Very fast network with low delay + connects many devices

What is a PAN? personal area network

A network for devices very close to you

What is a hotspot?

A place where you can access public Wi-Fi.

• What is RFID? Radio frequency identification (RFID) Technolog

• Tags that send item info using radio signals (used in tracking)

What is a WSN? Wireless sensor network

Many connected sensors that collect data from the environment

The internet=

client/server computing +Packet switching +TCP/IP and connectivity

In a process called tunneling,

packets of data are encrypted and wrapped inside IP packets.