Unit 4- Networks, Printers, Monitors

 Identify what a network is.  Describe the benefits of a network.  Identify ways to connect to a network.  Compare & contrast a client-server network and a peer to peer network.  Describe a LAN.  Describe a WAN.  Describe the Internet  Compare & contrast an Intranet & Extranet.

 Computers need to communicate with each other  2 or more connected devices ◦ Share files & resources  Standards allowed them to “speak the same language”

 Central Storage of files  Share files, resources, printers  Maintain network centrally  Secure  Backup

 Unauthorized shared data  Network failure  Easy to spread malicious programs & viruses  Loss of privacy

 How do you connect to a network?  NIC, Router, Modem

 Client-Server  Computers & devices connect to a server

 Peer to Peer  Router allows devices to connect to each other  Also allows shared Internet connection

 Comcast Cable Modem ◦ Through cable TV wire ◦ High Speed Broadband  Verizon DSL ◦ Over phone line ◦ High Speed Broadband ◦ Limited distance  Verizon FiOS ◦ Over fiber cable line ◦ High Speed Broadband ◦ Limited areas

 Look at Modem’s WAN or INTERNET port  Comcast ◦ Cable Wire  Verizon DSL ◦ Connects to Phone Jack ◦ Filter on phones  Verizon FiOS ◦ Cable Wire  Dial-Up ◦ Computer modem to phone jack

 What Do You Have at Home?

 LAN ◦ Local Area Network ◦ Devices connected in small area ◦ This classroom, this school, your house

 WAN ◦ Wide Area Network ◦ Connects LANs ◦ Over a large geographic area

 Originally for government  Largest network  What’s the most commonly used feature on the Internet? ◦ ◦ is stored on a server  NOT ON PC

 What device allows the sharing of Internet access? ◦ Router  What is the purpose of a network? ◦ Sharing files & resources  How many wires are in an Ethernet cable? ◦8◦8  What does LAN stand for? ◦ Local Area Network

 Looks like Internet  Private ◦ Only works w/in company network ◦ Great security  Handbooks, forms, news, policies

 Private ◦ Allows outside organization to access internal info ◦ Extension of intranet  Outside suppliers  Employees  Strict security ◦ Username & password

End of Day Two  A room of 5 connected computers describes a… ◦ LAN  To connect to a network, your PC must have a… ◦ NIC  This type of “Internet” is for internal use only within a business. ◦ Intranet

 Output device  DPI ◦ Dots per inch ◦ More dots= better quality ◦ 4800 x 1200 (H x V)  PPM ◦ Pages per minute ◦ Black & Color speeds  Color is slower

 Dot Matrix ◦ Pins hammer into ink ribbon ◦ Connected paper with guide holes ◦ Not good quality ◦ Slow & noisy

 Nozzles spray ink  Good quality  Quiet  Fast  Inexpensive

 Laser writes to drum  Toner  Thousands of pages  Fast  Extra paper trays  Duplexing

 All-In-One ◦ Print, copy, fax, scan ◦ Inkjet & laser  Plotter ◦ Large paper ◦ Drafting, posters

 Networking on some ◦ Wired & wireless ◦ Print from any PC  Make money from ink & toner ◦ Printer: $50 ◦ Ink Cost: $6  Price You Pay: $20-$30

 Measured in pixels  Resolution 1024 x 768  CRT ◦ Big & bulky  LCD ◦ Thin ◦ Less energy

 For faster printing would you use a dot matrix or inkjet?  Look up your ink or toner.

Unit 4- Networks, Printers, Monitors