Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building...
-
Upload
amir-thruston -
Category
Documents
-
view
216 -
download
0
Transcript of Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building...
![Page 1: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/1.jpg)
Internet and LAN Technology
![Page 2: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/2.jpg)
2
Chapter Contents
• Section A: Network Building Blocks
• Section B: Local Area Networks
• Section C: Internet Technology
• Section D: Internet Access
![Page 3: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/3.jpg)
3
Section A: Network Building Blocks
• Network Advantages and Challenges
• Network Classifications
• Geographic Scope: PANs, NANs, LANs, MANs, and WANs
• Organizational Structure: Client/Server and Peer-to-Peer
• Physical Topology
![Page 4: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/4.jpg)
4
Section A: Network Building Blocks
• Network Links
• Analog and Digital Signals
• Bandwidth
• Communications Protocols
![Page 5: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/5.jpg)
5
Network Advantages and Challenges
• Sharing networked hardware can reduce costs• Sharing networked hardware can provide access
to a wide range of services and specialized peripheral devices
• Sharing networked software can reduce costs• Sharing data on a network is easy• Networks enable people to work together
regardless of time and place
![Page 6: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/6.jpg)
6
Network Advantages and Challenges
• Networks may be vulnerable to unauthorized access from many sources and locations– More vulnerable than standalone computers
• Wireless networks can be tapped from a “snooping” computer
• Networked computers are susceptible to an increasing number of worms, Trojan horses, and blended threats
![Page 7: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/7.jpg)
7
Network Classifications
![Page 8: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/8.jpg)
8
Geographical Scope: PANs, NANs, LANs, MANs, and WANs
• Personal Area Network (PAN) – interconnection of personal digital devices
• Neighborhood Area Network (NAN) – connectivity spread over several buildings
• Local Area Network (LAN) – usually connects computers in a single building
• Metropolitan Area Network (MAN) – public high-speed network with range of about 50 miles
• Wide Area Network (WAN) – consists of several smaller networks
![Page 9: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/9.jpg)
9
Organizational Structure: Client/Server and Peer-to-Peer
![Page 10: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/10.jpg)
10
Physical Topology
• Arrangement of devices in a network
• Each connection point on a network is referred to as a node
• A bridge can connect two similar networks
• A gateway joins two dissimilar networks– Router
![Page 11: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/11.jpg)
11
Physical Topology
![Page 12: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/12.jpg)
12
Physical Topology
![Page 13: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/13.jpg)
13
Network Links
• Wired network– Twisted-pair cable– Coaxial cable– Fiber-optic cable
• Wireless network– RF signals– Microwaves– Infrared light
![Page 14: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/14.jpg)
14
Analog and Digital Signals
![Page 15: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/15.jpg)
15
Bandwidth
• The transmission capacity of a communications channel– High-bandwidth channel (broadband)
• Cable TV• DSL
– Low-bandwidth channel (narrowband)• Telephone system
![Page 16: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/16.jpg)
16
Communications Protocols
• Rules for efficiently transmitting data from one network node to another– Dividing messages into
packets– Affixing addresses to
packets– Initiating transmission– Regulating the flow of data– Checking for transmission errors– Acknowledging receipt of transmitted data
![Page 17: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/17.jpg)
17
Communications Protocols
• A packet is a “parcel” of data that is sent across a computer network– Circuit-switching technology vs. packet
switching technology• Voice over IP (VoIP)
![Page 18: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/18.jpg)
18
Section B: Local Area Networks
• LAN Standards
• Ethernet
• Wi-Fi
• HomePNA and HomePLC Networks
• Installing a LAN
• Using a LAN
![Page 19: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/19.jpg)
19
LAN Standards
• LAN Technologies are standardized by the IEEE– ARCnet– Token Ring technology– FDDI– Ethernet– Wi-Fi
![Page 20: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/20.jpg)
20
Ethernet
• Simultaneously broadcasts data packets to all network devices– IEEE 802.3– CSMA/CD protocol
![Page 21: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/21.jpg)
21
Ethernet
On an Ethernet, data travels on a “first come, first served” basis. If two workstations attempt to send data at the same time, a collision occurs.That data must be resent.
CLICK TO START
![Page 22: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/22.jpg)
22
Ethernet
• Varies in speed from 10 Mbps to 10 Gbps
• An Ethernet card is designed to support the Ethernet protocols
• Ethernet hubs link workstations via cables– Uplink port
![Page 23: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/23.jpg)
23
Wi-Fi
• Wireless networking technologies that are compatible with Ethernet
![Page 24: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/24.jpg)
24
Wi-Fi
• WEP (Wired Equivalent Privacy) encrypts data traveling over wireless networks
• Equipment required for a wireless network– Wi-Fi card– Wireless access point
• Bluetooth is a short-range wireless network technology
![Page 25: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/25.jpg)
25
HomePNA and HomePLC Networks
• HomePNA networks utilize existing telephone wiring to connect network devices– Special NICs and cables are required
• HomePLC networks transmit data over power lines as low-frequency radio waves
![Page 26: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/26.jpg)
26
Installing a LAN
CLICK TO START
![Page 27: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/27.jpg)
27
Using a LAN
In this drive mappingexample, a server’s driveC is mapped as drive Fby a workstation.After the mapping is complete,the server’s hard disk appears in the workstation’s directory asdrive F and can be used just as though it were a drive connected directly to the workstation.
CLICK TO START
![Page 28: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/28.jpg)
28
Using a LAN
• You can allow other network users to view and edit files in the folders you’ve designated as shared
![Page 29: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/29.jpg)
29
Using a LAN
• The Network Connection tool helps you troubleshoot connection problems
![Page 30: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/30.jpg)
30
Section C: Internet Technology
• Background
• Internet Structure
• ISP Infrastructure
• Internet Protocols
• IP Addresses
• Domain Names
![Page 31: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/31.jpg)
31
Background
• The Advanced Research Projects Agency designed ARPANET
• The Internet has an estimated 200 million nodes and 500 million users today
![Page 32: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/32.jpg)
32
Internet Structure
![Page 33: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/33.jpg)
33
Internet Structure
• Ping is used to find out whether a site is up and running
• The Traceroute utility records a packet’s path
![Page 34: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/34.jpg)
34
ISP Infrastructure
![Page 35: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/35.jpg)
35
Internet Protocols
• TCP and IP serve as the primary protocols responsible for message transmission on the Internet
![Page 36: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/36.jpg)
36
IP Addresses
• IP addresses are addresses that identify computers on the Internet– Static IP address– Dynamic IP address
![Page 37: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/37.jpg)
37
Domain Names
• Easy-to-remember names for Internet servers– Ends with an extension that indicates its top-
level domain
• Every domain name corresponds to a unique IP address– Domain Name System
• ICANN coordinates technical management of the Internet’s Domain Name System
![Page 38: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/38.jpg)
38
Domain Names
![Page 39: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/39.jpg)
39
Domain Names
The first step in registeringa domain name is to find out whether the name is currently in use or reserved for futureuse. If a domain name is notavailable, consider using a different top-level domain, such as biz instead of com.After you’ve found an available domain name you like, you can continue the registration process by filling out a simple online form.
CLICK TO START
![Page 40: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/40.jpg)
40
Section D: Internet Access
• Dial-up Connections• Cable Internet Service• DSL, ISDN, and Dedicated Lines• Wireless Internet Services• LAN Internet Access• Mobile Internet Access• Internet Connection Roundup
![Page 41: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/41.jpg)
41
Dial-up Connections
• Uses POTS to transport data between your computer and your ISP
• A modem converts digital signals from your computer into analog signals that can travel over telephone lines, and vice versa– Modulation / Demodulation
![Page 42: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/42.jpg)
42
Dial-up Connections
• Modems are still required, despite digital telephone technology
• Modem speed is measured as baud rate
• Many Internet connection methods provide faster downstream transmission rates than upstream rates
![Page 43: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/43.jpg)
43
Cable Internet Service
![Page 44: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/44.jpg)
44
Cable Internet Service
• Cable modems convert your computer’s signal into one that can travel over the CATV network
• Always-on connection
• Neighborhood network
![Page 45: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/45.jpg)
45
DSL, ISDN, and Dedicated Lines
• DSL is a high-speed, digital, always-on Internet access technology that runs over standard telephone lines– DSLAM– Most DSL installations require service
technicians• DSL modem
![Page 46: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/46.jpg)
46
DSL, ISDN, and Dedicated Lines
• ISDN connections are slower than DSL and cable Internet service, but faster than dial-up– ISDN terminal adapter connects a computer
to a telephone wall jack and converts signals to travel over ISDN connection
• T1, T3, and T4 lines are leased from the telephone company, and offer fast, high-capacity data transmission
![Page 47: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/47.jpg)
47
Wireless Internet Service
• Direct satellite service (DSS)
![Page 48: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/48.jpg)
48
Wireless Internet Service
• Fixed wireless Internet service broadcasts RF signals in order to offer Internet access to large areas– WiMAX– Wireless service providers are usually local or
regional businesses
![Page 49: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/49.jpg)
49
LAN Internet Access
• Cost-effective way to share one Internet connection among several computers
• To establish LAN Internet access, you need:– An operational wired or wireless LAN– A router or a hub with router capabilities– A high-speed Internet connection, such as DSL,
ISDN, or cable Internet– A modem that corresponds to your Internet
connection type
![Page 50: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/50.jpg)
50
Mobile Internet Access
• A Wi-Fi hotspot is a wireless broadband Internet service offered in a public location– WISP
• WAP is a communications protocol that provides Internet access from handheld devices
![Page 51: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/51.jpg)
51
Mobile Internet Access
• Handheld device services include:– Short message service (SMS)– Multimedia messaging (MMS)– Music fingerprinting– Games– City guides– E-mail– News, sports, stocks, and weather
![Page 52: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/52.jpg)
52
Mobile Internet Access
• Cellular service options
![Page 53: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/53.jpg)
53
Internet Connection Roundup
![Page 54: Internet and LAN Technology. 2 Chapter Contents Section A: Network Building BlocksNetwork Building Blocks Section B: Local Area NetworksLocal Area Networks.](https://reader036.fdocuments.us/reader036/viewer/2022062511/551a4a965503463e778b52b6/html5/thumbnails/54.jpg)
CHAPTER 5 COMPLETE
Internet and LAN Technology