Topic 1 sir ryan yeah

“Fixed” Computing

You go to the device

Mobility/BYOD

The device goes with you

Internet of Things

Age of Devices

Internet of Everything

People, Process, Data, Things

Advantages of peer-to-peer networking:

• Easy to set up

• Less complexity

• Lower cost since network devices and dedicated servers may not be required

• Can be used for simple tasks such as transferring files and sharing printers

Disadvantages of peer-to-peer networking:

• No centralized administration

• Not as secure

• Not scalable

• All devices may act as both clients and servers which can slow their performance

3 Categories of Network Components:

• Devices

• Media

• Services

End Devices examples:

• Computers

• Network printers

• VoIP phones

• TelePresence endpoint

• Security cameras

• Mobile handheld devices

Intermediary Network Devices examples:

• Network Access Devices (switches, wireless access points)

• Internetworking Devices (routers)

• Security Devices (firewalls)

2 Common Types of Network Infrastructures:

• Local Area Network (LAN)

• Wide Area Network (LAN)

Other types of networks:

• Metropolitan Area Network (MAN)

• Wireless LAN (WLAN)

• Storage Area Network (SAN)

LAN

A network serving a home, building or campus is considered a LAN

WAN

LANS seperated by geographic distance are connected by a network known as WAN

LANs and Wans

They may be connected into internetworks

Intranet

Company Only

Extranet

Suppliers, Customers, Collaborators

The Internet

The World

Copper

• Uses metal wires like telephone or cable lines.

• Sends data using electricity.

Fiber Optic

• Uses thin threads of glass or plastic.

• Sends data using flashes of light.

Wireless

• Uses the air instead of physical cords.

• Sends data using radio or Wi-Fi waves.