Networks, Collaborative, Technology, and the Internet of Things

Network Terminology:

1. Modern

a device that modulates/demodulates signal for transportation

Network Terminology:

2. Modulation and Coding

techniques used by modern to adapt the signal to the media

Network Terminology:

3. Signal

binary information we want to send

Network Terminology:

4. Signal Frequency Spectrum

al the frequency components of a signalNetwork Terminology:

Network Terminology:

5. Bandwidth

maximum bits per second that can be transmitted

• how network speed/capacity is measured

Circuit Switching

• OLDER technology that originated w/ telephone calls

• INEFFICIENT for digital transmission

Packet Switching

• transfer data or voice

• files are broken into packets, numbered sequentially, and routed individually to their destination

• when received at the destination—> the packets are reassembled into their proper sequences 

Internet Protocol (IP)

the basic technology that makes global communication possible

• each device attached to a network has a UNIQUE IP address that enables it to send and receive files made up of PACKETS

• IPv4—> 32 bit address

• IPv6—> 128bit address

Common Network Types:

• LAN —> Local Area Network

  • short distance connection

  • physically connected or WIFI

    • ex) office, school, home

• WAN—> Wide Area Network

  • spans larger physical distance

    • ex) internet, large company

• PAN—> Personal Area Network

  • based on RF transmission—> wifi or bluetooth

    • ex) person hotspot, streaming music or to bluetooth speaker

Intranets, Extranets, and Virtual Private Networks:

1. Intranets

used within a company for data access, sharing, and collaboration

Intranets, Extranets, and Virtual Private Networks:

2. Extranets

They are PRIVATE, company-owned networks that can be logged into remotely via the internet

Intranets, Extranets, and Virtual Private Networks:

3. Virtual Private Network (VPNs)

are used where security of transmission is a concern—> bc they ENCRYPT the packets before they are transferred over the network

Quality of Service (QoS)

1. Latency-sensitivy

data such as real time voice and high quality video

Quality of Service (QoS)

2. Prioritized Traffic

data and apps that are time delayed sensitive or latency sensitive apps

Quality of Service (QoS)

3. Throttle Traffic

gives latency sensitive apps priority, other types of traffic need to be held back—> throttled

Quality of Service (QoS)

4. Traffic Shaping

the ability to prioritize and throttle network traffic

• sensitive to delay

• the goal is to smooth out traffic by buffering and delaying packets to meet a specific bandwidth rate—> preventing abrupt spikes that could overload the network

Mobile Networks

• bluetooth—> short range wireless—> PAN

• WIFI—> standard way to wirelessly connect computing devices through routers commonly connected to the Internet—> LAN

• Cellular Data Network—> WAN

Near Field Communication (NFC)

• enables 2 devices within close proximity to establish a communication channel and transfer data using radio waves

• more secure than other wireless technologies

  • ex) Apple Watch, digital tickets providing access to concerts

The Internet of Things (TIoT)

the network of physical objects or “things” embedded with electronics, software, sensors, and network connectivity, that enables these objects to collect and exchange data