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Today

Today. Lab-Roberts: Identifying a workstations IP configuration settings Devices and Protocols Moodle Test Review. 20 minutes. In-class lab: Roberts-Identifying A Workstation’s IP Configuration p. 15 . If you ever finish a lab early you can Work on the Labsim homework for next class

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Today

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  1. Today • Lab-Roberts: Identifying a workstations IP configuration settings • Devices and Protocols • Moodle • Test Review

  2. 20 minutes In-class lab:Roberts-Identifying A Workstation’s IP Configuration p. 15 If you ever finish a lab early you can Work on the Labsim homework for next class Help a classmate

  3. Network Model Comparison

  4. Client/Server Network Server provides client services such as security, data storage, Internet access, and email

  5. Peer-to-Peer Network

  6. Network Operating System (NOS) Provides communication between different operating systems

  7. Applied Networking Are Windows XP, Windows Vista, and Windows 7 considered a network operating systems?

  8. How Data is Packaged Transmitted in form of digital signals Data is divided into smaller packets Data given sequence number and routing information, such as origin and packet destination Receiving computer reassembles message in order it was transmitted

  9. Network Connectivity • Connection-oriented • DSL Modem connects to Internet service provider • Cable modem connects to cable provider • Connectionless-oriented • Different paths used between source and destination

  10. Protocol • Set of rules governing communication between devices on a network • Determines: • How devices identify each other • Method of data exchange • Size of each packet • Timing for packet transmission • Signal to be used to end a session

  11. Protocol (Cont.) TCP/IP (Transmission Control Protocol/Internet Protocol)—Provides Internet communication Network LAYER FIR (Fast Infrared)—Based on wireless technology ATM (Asynchronous Transfer Mode)—Large amounts of data streamed for audio and video Link-Layer Discovery Protocol (LLDP)—Used by Windows operating systems Data Link LAYER

  12. Media/Physical Layer Copper core cable—Most common media; plastic or synthetic insulation Fiber-optic cable—Has glass or plastic core Radio waves—Carries signals in wireless networks Infrared light—Beam used to transport digital signal Media converter—Connects Ethernet 100-Mbps copper core cable to 1-Gbps fiber-optic cable

  13. Network Interface Card (NIC) Must match physical communication requirements of the network Requires driver to communicate with other computer hardware Contains unique identifiers: Physical—MAC (media access control) address Logical identification—Computer name DATA Link Layer

  14. Other Media Devices • Repeater - An electrical device that amplifies or reshapes a weak signal into its original strength and form • is subject to attenuation the loss of signal strength Physical Layer

  15. Other Media Devices • Concentrator, or hub – a central connection point where all network cables are connected. • Passive hub • Physical Layer

  16. Other Media Devices • Active hub • a hub that can determine whether a packet should remain in an isolated section of the network or pass through to another section of the network.

  17. Other Media Devices • Gateway—Translates or connects two networks that use different protocols • Transport Layer • Session Layer • Presentation Layer • Application Layer

  18. Other Media Devices • Bridge—Controls network traffic • DATA LINK LAYER

  19. Other Media Devices (Cont.) DATA LINK LAYER Switch– a network device that filters network traffic or creates sub networks from a larger network

  20. Other Media Devices (Cont.) Multilayer switch—Enhanced version of basic switch Can make decisions on routing based on packet content. Transport LAYER

  21. Other Media Devices (Cont.) Router—Routes data packages using TCP/IP a network device that navigates packets across large networks, eg Internet Network LAYER

  22. Other Media Devices (Cont.) Brouter—Provides less functions than router It combines router and bridge functions

  23. Standards and Organizations

  24. OSI Model 7 6 5 4 3 2 1

  25. OSI Model and Network Devices

  26. Match Hardware to OSI Layer Activity

  27. Match Hardware to OSI Layer Activity

  28. Review • Which device navigates packets across large networks, such as the Internet, using the most efficient route? • A. Gateway • B. Switch • C. Network interface card • D. Router D. Router

  29. Review • Which device changes one type of electrical signal into another type or interfaces one cable type to another? • A. Hub • B. Bridge • C. Brouter • D. Media converter D. Media converter

  30. Review • Which device can make decisions about routing a packet based on packet content? • A. Active hub • B. Brouter • C. Multilayer switch • D. Router C. Multilayer switch

  31. Review • Which device serves only as a central connection point where all network cables are concentrated? • A. Active hub • B. Bridge • C. Passive hub • D. Switch C. Passive hub

  32. Review • Which device has two types of identification: a MAC address and a name provided by a technician at the time of installation? • A. Active hub • B. Network interface card • C. Repeater • D. Router B. Network interface card

  33. Review • Which of the following is an example of a local area network? • A. An iPhone connected via USB cable to a PC • B. An iPhone connected to the Internet using cellular technology • C. A university PC in building A connected to the mail server in building B • D. A Roku streaming media box, wireless router, Internet connection, and Netflix media server A. An iPhone connected via USB cable to a PC

  34. Review What are the advantages and disadvantages of a network? Advantages: Share software, data, equipment, and communication quickly, easily, and inexpensively Disadvantages: Losing access to files, need additional personnel, vulnerable to hackers, viruses and disgruntled workers

  35. Review • The _____ is a maintenance organization concerned with fiber optics, user equipment, network equipment, wireless communications, and satellite communications. • A. ANSI • B. TIA • C. UL • D. W3C B. TIA

  36. Review Which items listed in the dialog box shown are considered protocols? TCP/IPv6 and TCP/IPv4

  37. Review How is data sent across a network? Data is sent in the form of digital signals and put in smaller segments called packets. The packets contain routing information, such as node origin and destination address. The receiving address reassembles message in order it was transmitted.

  38. Review • The _____ is a nonprofit organization that tests products and materials for safety standards. • A. ANSI • B. EIA • C. TIA • D. UL D. UL

  39. Review • The _____ was responsible for the original development of the World Wide Web. • A. CERN • B. EIA • C. ISO • D. W3C A. CERN

  40. Review • The _____ provides recommendations for Web page language standards. • A. CERN • B. EIA • C. ISO • D. W3C D. W3C

  41. Review • The _____ is a model that describes how hardware and software should work together to form a network communications system. • A. ANSI • B. CERN • C. ISO • D. OSI D. OSI

  42. Review • A local area network consists of three Windows 7 computers. All office data is stored on one of the computers and is shared with the others. Another computer shares its laser printer. This network would be classified as a _____ network. • Peer-to-peer • Client/server A. Peer-to-peer

  43. Review • A local area network consists of a Windows Server 2008 computer, three Windows Vista computers, and six Windows 7 computers. The Windows Server 2008 computer provides security and data files for the network. This network would be classified as a _____ network. • Peer-to-peer • Client/server B. Client/server

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