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Information and Communications
Technology Qualifications
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| Prescription: NE600 (NC200)Networks |
| Aim of Module | To enable students to describe and use ISO OSI Layer’s 1 and 2 protocols to facilitate serial data communications over telecommunications networks.
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| Credits | 7
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| Student Learning hours | 70
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| Content Revised | 2002
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| Prescription Expiry Date | Nov 2005
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LEARNING OUTCOMES
The Student Will
| | | | | C | 1 | Describe the various telecommunication networks and the services offered for digital communications | | | | | A | 2 | Describe and use a range of available facilities for supporting local and remote terminal networks | | | | | A | 3 | Describe and use a serial asynchronous data interface | | | | | A | 4 | Describe and use asynchronous and synchronous line control (OSI Layer 2) protocols | | |
CONTENT
| | | | > | A description of telecommunication networks and the services offered for digital communications will include: | | | | | -Telecommunications providers | | | -Leased lines and facilities | | | -Value Added Networks | | | -Public data networks including: | | | -packet switched (PSN) | | | -The Internet | | | -ADSL offerings; e.g. Jet Stream and Tempest | | | -Any others considered current and appropriate | | | -Telephone networks including: | | | - telephone networks (PSTN) | | | - Integrated Services Digital Network (ISDN) | | | - problems associated with the transmission of digital signals including A/D and D/A conversion | | | - direct dialled connection (dial-up) | | | - private permanent connection (leased line) | | | -direct connection between sites | | | | | | | | | | |
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| | | | > | A description of a range of facilities for supporting local and remote terminal networks and the use of these facilities will include: | | | -Terminal connections, both local and remote and: | | | -Multiplexers, including frequency division multiplexers (FDM's), time division multiplexers (TDM's), and statistical multiplexers (STATMUX's) | | | -Data concentrators | | | -Message switches | | | -Front end Processors | | | -ISPs and their function | | |
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| | | | > | A description of a range of available facilities for supporting local and remote terminal networks and the use of these facilities will include: | | | -the main signals used in EIA232 and V24, including (as a minimum) TXD, RXD, RTS/CTS, RTS, DTR, DSR, GND, and RLSD/CD and their operation when communicating via a modem | | | -transmission delays incurred including: | | | - modem turnaround | | | - modem delay | | | - reaction time | | | - propagation delay | | | -comparison of modulation techniques | | | -illustrating timings for a typical transmission sequence | | | -demonstrating the problems and providing the solutions for connecting EIA232/V24 devices, including: | | | -connecting and using null modem cables | | | -using a break-out box (or similar) to connect devices, including terminals and printers, to computers | | |
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| | | | > | A description and the use of asynchronous and synchronous line control protocols will include: | | | -Connection establishment | | | -Data transfer | | | -Connection termination | | | -Problem indicators | | | -Flow control including Windowing and XON/XOFF | | | -Polling, including roll call and hub polling | | | (Note: Asynchronous protocols will include XMODEM, ZMODEM and/or any other appropriate protocols. | | | Synchronous protocols will include Character (Byte) oriented Binary Synchronous Communications and Bit oriented HDLC, SLIP, PPP and/or any other appropriate protocols). | | | | | NOTE | | | > | Access to modems and break out boxes (or similar) are essential for this module | | | > | Use HyperACCESSTM or other similar communications software | | |
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| | | | Note | | LEARNING RESOURCES | | | Suggested Textbooks: | | | Forouzen, B. (2001) Data Communications and Networking 2nd Edition: McGraw-Hill | | |
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