NACCQ - Qualifications

Information and Communications
Technology Qualifications

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Prescription: DC600 (DC200)Data Communications

Aim of Module	To enable students to successfully configure serial communications links and a Local Area Network (LAN), and extend their knowledge of communications networks.
Credits	7
Knowledge Assumed From	DC500 (DC100) Data Communications
Student Learning hours	70
Content Revised	2000
Prescription Expiry Date	Nov 2005

Level and Assessment Schedule
Topics	Highest Skill Level	Suggested Assessment Percentage
1 Serial Communications	A	40
2 Local Area Networks	A	40
3 Communications Networks	C	20

		100

LEARNING OUTCOMES The Student Will

A	1	Describe the requirements for serial communications and, using the ITU-T V.24/V.28 (EIA232) interface, demonstrate an ability to successfully configure serial communications links.



A	2	Describe LAN characteristics and operating principles, the elements necessary for configuring a LAN system and, using a systematic approach, demonstrate an ability to successfully connect and activate a LAN.



C	3	Describe the various types of public and private communications networks available for data communications.

CONTENT

1	Serial Communications


>	A description of serial communications will include references to ITU-T Recommendations V.24/V.28, X.21 and X.21bis).



>	Successfully configuring serial communications links will include:

	-	the use of both 9 and 25 pin D connectors

	-	the use of a Null modem (may be configured using a breakout box)

	-	the use of a terminal emulation program to exchange messages between PCs at various baud rates and to transfer files using a standard protocol; e.g. Kermit, Z-Modem or X-Modem

	-	transfer of a text file from a PC to a terminal, or printer

	-	logging onto a host computer (via a modem, if suitable facilities are available)

2	Local Area Networks


>	LAN characteristics and operating principles will include:

	-	comparing the ISO OSI 7 layer model and the IEEE 802 layers

	-	describing topologies (bus, ring, star), transmission media, and medium access control protocols (Command response, interrupt, CSMA/CD and Token Passing

	-	the interconnection of networks using bridges, switches, routers and gateways

	-	an introduction to TCP/IP



>	Successfully connecting and activating a LAN will include:

	-	connecting (cabling) the devices (nodes)

	-	configuring and testing the network interface card (NIC)

	-	installing, configuring and using network software

	-	identifying and rectifying associated problems

3	Communications Networks


>	A description of networks will include the PSTN, DDN, PSN, Frame Relay, ATM, and the ISDN, how these networks may be structured (multiplexed) and how they may follow a layered approach.

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