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Page 1: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 1

Connectivity

Page 2: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 2

OverviewOverview

The basic concepts of networking and the terminology used in

networking will be introduced.

Page 3: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 3

OverviewOverview

Will learn how to create network connections to share

resources.

Page 4: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 4

OverviewOverview

Will look at command line utilities to gather information

about your network and perform other network-related tasks.

Page 5: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 5

OverviewOverview

How to map a drive on a network will be discussed and then a drive will be

mapped.

Page 6: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 6

OverviewOverview

Will be introduced to the basic protocols of the Internet.

Page 7: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 7

OverviewOverview

How Command Line Utilities can be used to troubleshoot and diagnosis

problems will be discussed.

Page 8: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 8

OverviewOverview

Will learn how to connect to and navigate the Internet.

Page 9: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 9

Networks (Networks (LANs and WANsLANs and WANs))

LAN (local area network):Network of computers located in one room or building

Page 10: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 10

Networks (Networks (LANs and WANsLANs and WANs))

Networks have:Servers - provide shared resources to network usersClients - access shared network resources

Page 11: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 11

Networks (Networks (LANs and WANsLANs and WANs))

Two types of networks: Server-based (> 10 users) Peer-to-peer (< 10 users)

Page 12: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 12

Networks (Networks (LANs and WANsLANs and WANs))

Advantages to setting up network: Share hardware All users can access current files Can update information as needed Set up local e-mail Laptops can be attached and detached If away from office can dial in to network to

access needed resources

Page 13: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 13

Networks (Networks (LANs and WANsLANs and WANs))

WAN (wide area network): Network of computers connected over long distances

Page 14: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 14

Networks (Networks (LANs and WANsLANs and WANs))

All networks need a NIC (network interface card) installed

into each computer.

Page 15: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 15

Networks (Networks (LANs and WANsLANs and WANs))

Cabled network - card must support type of cable used to connect computers

Wireless network - each computer has wireless network card

Allows computers to communicate by radio waves, infrared , power wires in walls, or by phone.

Page 16: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 16

Networks (Networks (LANs and WANsLANs and WANs))

Need to decide appropriate network design (topology).

Page 17: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 17

Networks (Networks (LANs and WANsLANs and WANs))

Popular topologies for peer-to-peer network:

Bus topology Star topology

Page 18: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 18

Networks (Networks (LANs and WANsLANs and WANs))

Bus - common topology for workgroup: Uses single coaxial cable (Thinnet) Need T-connectors and terminator

plugs All computers connect to a single cable

Page 19: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 19

Networks (Networks (LANs and WANsLANs and WANs))Fig 12.1 A Peer-to-Peer Network with Bus Topology p. 635Fig 12.1 A Peer-to-Peer Network with Bus Topology p. 635

Page 20: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 20

Networks (Networks (LANs and WANsLANs and WANs)) Bus topology: Advantages

Ease of installationRelatively inexpensiveEasy to expand

DisadvantageOne segment of cable fails - entire network

down Becoming less common

Page 21: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 21

Networks (Networks (LANs and WANsLANs and WANs))Fig 12.2 A Peer-to-Peer Network with Star Topology p. 636Fig 12.2 A Peer-to-Peer Network with Star Topology p. 636

Page 22: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 22

Networks (Networks (LANs and WANsLANs and WANs))

Star topology: Uses a hubAdvantage

Single point of failure

Disadvantages More expensive Wiring can be unwieldy

Wireless network - no need to run wires

Page 23: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 23

Networks (Networks (LANs and WANsLANs and WANs))Fig 12.3 A Wireless and Wired Network p. 637Fig 12.3 A Wireless and Wired Network p. 637

Page 24: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 24

Networks (Networks (LANs and WANsLANs and WANs))

Either topology can use any resource by connecting it to cable or hub.

Page 25: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 25

Networks (Networks (LANs and WANsLANs and WANs))

Most users prefer a hub:

Instead of hub can use:SwitchRouter

Firewall may be selected

Page 26: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 26

Networks (Networks (LANs and WANsLANs and WANs))

Server-based networks need NOS (network operating system) that

tell computers how to communicate with one another.

Page 27: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 27

Networks (Networks (LANs and WANsLANs and WANs))

To work, a network needs: Hardware Software Network Administrator

Page 28: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 28

Networks (Networks (LANs and WANsLANs and WANs))

Network administrator: Decides how hardware and software used Decides who will have access to what

devices and resources on network Manages day-to-day operation of hardware,

network operating system, and resources of network

Page 29: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 29

Looking at Your NetworkLooking at Your Network

When Windows XP Professional is installed, it will detect network card and installs default components.

Can add network later using New Connection Wizard or Network Setup Wizard

Page 30: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 30

Looking at Your NetworkLooking at Your Network

When setting up peer-to-peer network:Need to name computerProvide administrator password

Most important password in Windows XP Professional

Each user needs log on name and password

Page 31: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 31

Looking at Your NetworkLooking at Your Network

My Network Places is map to network.

Page 32: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 32

Looking at Your NetworkLooking at Your Network

Activities that follow are based on specific computer configuration.

Do not attempt to do activities in a lab environment unless instructed by your instructor

Page 33: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 33

Activity - Looking at Your Activity - Looking at Your NetworkNetwork

KEY CONCEPTS:Local Area Connection Properties sheet

General, Authentication and Advanced tabsWhat various icons representTerms:

Client, Service, ProtocolFirewall, Gateway, ICF, ICS, Browser

Computer and workgroup namesUniversal naming convention

Page 34: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 34

Sharing Printers Sharing Printers on a Networkon a Network

Two parts to sharing resources: Server - computer with resources

you wish to share Client - computer that wishes to

access resources

Page 35: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 35

Sharing Printers Sharing Printers on a Networkon a Network

On large network one computer is the print server.

On small network the print server is any computer that is connected to a printer.

Page 36: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 36

Sharing Printers Sharing Printers on a Networkon a Network

Fig 12.4 Printer Sharing on a Network p. 645Fig 12.4 Printer Sharing on a Network p. 645

Page 37: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 37

Sharing Printers Sharing Printers on a Networkon a Network

If a printer is attached to a computer, you could use the

printer “locally”.

Page 38: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 38

Activity—Sharing Activity—Sharing Printers on the NetworkPrinters on the Network

Fig 12.5 The Connect to Printer Dialog Box p. 652Fig 12.5 The Connect to Printer Dialog Box p. 652

Page 39: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 39

Activity—Sharing Activity—Sharing Printers on a NetworkPrinters on a Network

KEY CONCEPTS:Can run different OS for each computer

on networkMust use same name across network Icons

Identifying network and shared printer iconsTwo printer icons (“Hung Off” and “Local”)

Page 40: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 40

Activity—Sharing Activity—Sharing Printers on a NetworkPrinters on a Network

KEY CONCEPTS:Choose Local printer if printer on hubNetwork path always begins with

double backslash Format - \\computer name\share name

Page 41: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 41

Sharing Hard Drive and Sharing Hard Drive and a Folder on a Networka Folder on a Network

File server:Computer with drive that is sharedLarge network - often one computer

designated at file serverSmall network - usually no dedicated

file server

Page 42: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 42

Sharing Hard Drive and Sharing Hard Drive and a Folder on a Networka Folder on a Network

Can share entire drive

or selected folders.

Page 43: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 43

Permissions and RightsPermissions and Rights

In lab environment local computer part of domain:

Administered by network administratorIncludes access control

Page 44: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 44

Permissions and RightsPermissions and Rights

Using NTFS:Can set permissions on files/foldersUsers can be assigned to groupsWhen object created owner assigned to itObjects inherit permissions

Page 45: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 45

Permissions and RightsPermissions and Rights

Using FAT32: Can provide some security on folders when shared on network Cannot assign permissions on a file-by-file basis as you can with NTFS

Page 46: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 46

Activity—Sharing Activity—Sharing Drives on a NetworkDrives on a Network

KEY CONCEPTS: Flashlight icon - Windows looking for a network

connection Ramifications of “Simple File Sharing” Administrator share Authenticated Users Naming shared device How to identify computer you are on Deny permissions takes precedence over allow entries

Page 47: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 47

Using Net CommandsUsing Net Commands

See list of net commands by keying in net help at

command line.

Page 48: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 48

Using Net CommandsUsing Net CommandsFigure 12.6 List of NET Commands p. 668Figure 12.6 List of NET Commands p. 668

Page 49: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 49

Using Net CommandsUsing Net Commands

For detailed help on a command use syntax net

help command

Page 50: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 50

Using Net CommandsUsing Net CommandsFigure 12.7 Using Help with the Net Command p. 668Figure 12.7 Using Help with the Net Command p. 668

Page 51: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 51

Using Net CommandsUsing Net Commands

For brief help use net command /?

Three net commands answer questions regarding network setup needed when seeking Tech support.

Page 52: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 52

Activity - Gathering Information Activity - Gathering Information with NET Command on Domainwith NET Command on Domain

KEY CONCEPTS: Gathered information about workstation No limit to # of users that can be logged onto network

Function of “Net localgroup” Messaging name Commands - NET NAME, NET USER, NET VIEW, NET ACCOUNTS,

NET STATISTICS Reason for having hard copy of above information

Page 53: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 53

Activity - Gathering Information Activity - Gathering Information with NET Command on Domainwith NET Command on Domain

Figure 12.9 Windows 2000 Server Figure 12.9 Windows 2000 Server Using the NET USER p. 672Using the NET USER p. 672

Page 54: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 54

Activity - Gathering Information Activity - Gathering Information with NET Command on Domainwith NET Command on Domain

Figure 12.10 Windows 2000 Domain Server Figure 12.10 Windows 2000 Domain Server Using the NET STATISTICS SERVER p. 675Using the NET STATISTICS SERVER p. 675

Page 55: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 55

Mapping Drives and the Mapping Drives and the NET USE commandNET USE command

Mapped drive:Shared network drive or folder

that has been assigned a local drive letter

Page 56: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 56

Mapping Drives and the Mapping Drives and the NET USE commandNET USE command

Mapped drive/folder: Appears as a drive on client

computer Can be accessed (My Computer)

using assigned/mapped letter.

Page 57: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 57

Mapping Drives and the Mapping Drives and the NET USE commandNET USE command

NET USE:Command line utility used to map drives, gives info

and allows shares to be manipulatedConnects/disconnects computer to shared resourceUsed to set up network printer to act as a “local”

printerDrive alias assigned with NETUSE may or may not be

“persistent”

Page 58: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 58

Activity—Using the Activity—Using the NET USE CommandNET USE Command

KEY CONCEPTS: Drive alias assigned with NET USE may/may not be

“persistent” Know before issuing NET USE connection

Place drive mapping commands into batch file and place shortcuts to batch files on Desktop

PAUSE holds batch file for user intervention Use drive letter mappings to shared devices in many

ways Make backups of critical data “on the fly” Graphic with two CD’s

Page 59: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 59

Activity—Using the Activity—Using the NET USE CommandNET USE Command

Fig 12.11 Use of Persistent on a Domain Server p. 679Fig 12.11 Use of Persistent on a Domain Server p. 679

Page 60: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 60

Activity—Using the Activity—Using the NET USE CommandNET USE Command

Fig 12.12 Net Use on a Domain p. 685Fig 12.12 Net Use on a Domain p. 685

Page 61: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 61

Activity—Using the Activity—Using the NET USE CommandNET USE Command

Fig 12.13 Using NET USE on a Domain p. 685Fig 12.13 Using NET USE on a Domain p. 685

Page 62: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 62

Mapping Drives Using Windows Mapping Drives Using Windows Explorer and My ComputerExplorer and My Computer

Can also use GUI to map drives: Right-click My Computer/or My Network

Places from Start menu and choose Map Network

Drive

If available - right click icons

Use Tools menu

Page 63: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 63

Activity - Mapping Drives with Activity - Mapping Drives with Windows Explorer and My Windows Explorer and My

ComputerComputerKEY CONCEPTS: Can identify network drive by icon Access mapped network drive as any drive

on system Sharing drive - sharing all folders on drive

Page 64: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 64

The InternetThe Internet

Internet: Worldwide network of computers Part of information superhighway Referred to as cyberspace

Page 65: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 65

The InternetThe InternetInternet is used to connect to various public and private institutions in order to:

Communicate with other computer users Gather information Do research To learn Purchase/sell goods

Page 66: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 66

The InternetThe Internet

Internet - actual network used to transport information.

Web - Collection of standards and protocols used to

access information on the Internet.Interconnected collection of millions of Web sites

Page 67: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 67

The InternetThe Internet

Web uses three standards: URL’s - location of document HTML - programming language used

to create documents HTTP - protocol used to transfer data

Page 68: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 68

The InternetThe Internet

To retrieve a document, URL needs: Protocol to be used Server address with which to connect Path to the information

Page 69: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 69

The InternetThe Internet

URL syntax:

protocol://server name/path

Page 70: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 70

The InternetThe Internet

HTTP is major protocol used to transfer information within the

World Wide Web.

Page 71: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 71

The InternetThe Internet

Web site: Resides on a server Has an address (URL) Virtual/physical location of Web

page (person/org)

Page 72: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 72

The InternetThe Internet

Web page: Single screen of text and/or

graphics Usually has hypertext links to

other pages

Page 73: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 73

The InternetThe Internet“Dot” part of address denotes type of web site:

.com .edu .gov .mil .org

Page 74: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 74

The InternetThe InternetSearch engine: Category of sites developed to find

needed information Helps you find what you want Index to indexes

Page 75: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 75

The InternetThe InternetSearch engines:

http://www.yahoo.com http://www.altavista.com http://www.guide.infoseek.com http://www.lycos.com http://www.askjeeves.com http://www.webcrawler.com

Page 76: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 76

The InternetThe Internet

Portal - entry to Web

Yahoo! and Excite are positioning themselves as portals

Page 77: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 77

The InternetThe InternetConnect to the Internet via:

Online provider ISP (Internet service providers)

Also called IAP (Internet access providers) Direct cable connection ISDN (Integrated Services Digital Network) DSL Satellites

Page 78: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 78

An Overview of TCP/IPAn Overview of TCP/IP

Data is transferred over the Internet through TCP/IP protocols.

Page 79: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 79

An Overview of TCP/IPAn Overview of TCP/IP

Data travels through several networks until it gets to its destination

Each network has a router Data sent in packets

Page 80: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 80

An Overview of TCP/IPAn Overview of TCP/IP

TCP and IP protocols specify the rules used for creating,

addressing, and sending the packets of data.

Page 81: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 81

An Overview of TCP/IPAn Overview of TCP/IP

TCP: Divides data into packets Numbers each packet so they can be

reassembled at receiving end.

IP: Specifies addresses of sending/receiving

computers Sends packets on their way

Page 82: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 82

An Overview of TCP/IPAn Overview of TCP/IP

Data divided into packets.

Page 83: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 83

An Overview of TCP/IPAn Overview of TCP/IP

Connecting to the Internet: Permanent open connection PPP (Point to Point Protocol) SSLIP (Serial Line Internet Protocol) Cable modem or DSL connection

Page 84: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 84

An Overview of TCP/IPAn Overview of TCP/IP

Each computer connected to the Internet needs:

TCP/IP protocols installed Unique IP address

Can be static or dynamic.

Page 85: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 85

An Overview of TCP/IPAn Overview of TCP/IP

IP address made up of four numbers separated

by periods.

Page 86: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 86

An Overview of TCP/IPAn Overview of TCP/IPFig 12.14 A Dotted Quad Address p. 696Fig 12.14 A Dotted Quad Address p. 696

Page 87: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 87

An Overview of TCP/IPAn Overview of TCP/IP

Originally, IP address divided into: Class A, Class B, or Class C

Now, two additional classes: Class D or Class E

Page 88: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 88

An Overview of TCP/IPAn Overview of TCP/IP

To not run out of IP addresses:Do not assign permanent (static)

addressAssign temporary (dynamic) IP

address for work session

Page 89: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 89

An Overview of TCP/IPAn Overview of TCP/IP

Each site attached to Internet belongs to a domain.

Domain Name System (DNS) - provides name resolution. Numeric IP address needed to communicate across Internet.

Page 90: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 90

An Overview of TCP/IPAn Overview of TCP/IP

Use browser to access a site on Internet, key in its URL.

Page 91: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 91

An Overview of TCP/IPAn Overview of TCP/IP Fig 12.14 A Dotted Quad Address p. 696Fig 12.14 A Dotted Quad Address p. 696

Internet name of the computer (server)

Name of the item to request from the server

Name of the protocol to use when accessing the server

Page 92: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 92

TCP/IP Utilities—TCP/IP Utilities—Command Command Line Interface with the InternetLine Interface with the Internet

Windows provides a series of commands (utility programs) that run at the command line.

Page 93: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 93

TCP/IP Utilities—TCP/IP Utilities—Command Command Line Interface with the InternetLine Interface with the Internet

Utility programs are TCP/IP commands: Set of tools used for troubleshooting problems Offer connections to computers not connected to

web If in lab environment and going through a

“firewall” some of utilities may not function Installed when TCP/IP network protocols

installed

Page 94: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 94

TCP/IP Utilities—TCP/IP Utilities—Command Line Command Line Interface with the InternetInterface with the Internet

Table 12.1 Command Line Commands for the Internet Table 12.1 Command Line Commands for the Internet pp.. 698-699pp.. 698-699

Page 95: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 95

TCP/IP Utilities—TCP/IP Utilities—Command Command Line Interface with the InternetLine Interface with the Internet

For help with any of the commands, at the command line key in:

Command name, a space, and then /?

Page 96: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 96

IPCONFIGIPCONFIG

IPCONFIG: Displays current TCP/IP

configurations in one place Allows the request of a release or

renewal of a DHCP-assigned IP address

Page 97: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 97

IPCONFIGIPCONFIG

Assigned address with dial-up service.

Need address if trying to Telnet into restricted server.

Page 98: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 98

Activity—Using IPCONFIGActivity—Using IPCONFIG

KEY CONCEPTS: See all information on Internet adapter that has

TCP/IP bound to it If not connected/logged on - no IP address

reported Adding /ALL parameter - obtain more

information about network and internet connections

Page 99: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 99

PINGPINGPING (Packet InterNet Groper):

Diagnostic tool used to determine if computer you are trying to reach is up and running.

Page 100: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 100

PINGPING

If ping successful - see four replies on screen display.

If ping not successful - see “Request timed out” message.

Page 101: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 101

PINGPING Can ping yourself using loopback

address (127.0.0.1).

Pings are not always reliable.

Some servers do not allow themselves to be “pinged”.

Page 102: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 102

Activity—Using PINGActivity—Using PINGKEY CONCEPTS: “Pinged” IP address and host name “Pinged” yourself using loopback

address (127.0.0.1)Loopback address is IP address of your

computer Large organizations usually have a

number of servers

Page 103: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 103

TRACERTTRACERT

TRACERT: Diagnostic utility that determines and

traces route on which data is moving to destination computer.

Page 104: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 104

TRACERTTRACERT TRACERT determines data route by

sending packets containing time values.

When command is completed sends back five-column display.

An asterisk (*) means attempt timed out.

Page 105: Ch 121 Connectivity. Ch 122 Overview The basic concepts of networking and the terminology used in networking will be introduced

Ch 12 105

TRACERTTRACERT

Tracert uses pings: If server does not allow pinging -

may not be able to trace a route

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Activity—Using TRACERTActivity—Using TRACERT

KEY CONCEPTS: Right most column indicates what

computers packets are traveling on Not always easy to know where route

actually goes

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FTPFTPFTP (File Transfer Protocol): Communications protocol that

computer uses to transfer files FTP servers store files that Internet

users can download

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FTPFTPAdvantage of FTP: Ability to transfer files to and from

computers running different operating systems

Can transfer files in either text or binary mode

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FTPFTP

FTP has many commands: To get help within FTP, key in “HELP

command” For list of commands, key in HELP

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Activity—Using FTPActivity—Using FTP

KEY CONCEPTS: Some servers allow anonymous logins

Password - any word can be used For command syntax - key in “HELP” plus

command name ASCII files have extensions of .txt Directories have a dr on far left. Compressed files have .ZIP extensions

Need utility (PKZIP) to unpack file

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Activity—Using FTPActivity—Using FTP

KEY CONCEPTS: Command Line Interface borrows from Unix

Key in: “get filename” - transfer file to default directory Key in: “get filename” - (file name followed by hyphen)

- acts like TYPE command To transfer binary file (.EXE) key in:

binary get file.exe ASCII

Key in ASCII to return to text-file mode

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TelnetTelnetTelnet is connection to a remote computer: You become user on remote computer,

and Your monitor becomes monitor for

remote computer.

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TelnetTelnetExample

1. You key in 3 + 42. Your computer transmits keystrokes to remote computer.3. Remote computer receives keystrokes and does the work.4. Your monitor becomes monitor for remote computer and results of work displayed on your computer.

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TelnetTelnet

Technically, Telnet is protocol and terminal handler portion of the TCP/IP protocol suite.

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TelnetTelnet

To use Telnet: Both computers must support

Telnet protocol Incoming user must have

permission to use remote computer

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TelnetTelnet

Telnet used: By system administrator (or other

professional) to log on to your computer and troubleshoot problems on your computer

Most commonly, for connecting to libraries and other public databases

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Activity—Using TelnetActivity—Using Telnet

KEY CONCEPTS: For list of commands in Telnet

environment, key in ?/help Became a user on a remote computer Used Telnet to connect to Library

catalog