Table of ContentsAbstract21. Introduction32. Data and Network Communications within the ICT requirements43. Network Model for ICT44. Data communication Instruments95. Networking106. Network Devices137. Cost Estimation148. Conclusion14References15

ASSIGNMENT COVER SHEET (INDIVIDUAL)ATMC GEELONGAssignment has to be submitted online on Moodle and on or before the due date.SUBJECT CODE:

ITECH 6502

SUBJECT TITLE:

Data Communication Management

ASSIGNMENT NUMBER AND TITILE:

1

WORD COUNT (IF APPLICABLE):

2500

DUE WEEK:

WEEK 11

LAB/TUTORIAL GROUP:

THU 9-11

LECTURER:

SHITIZ

TUTOR:

JANA POLGAR

STUDENT ID : 30115013STUDENT FAMILY NAME: AppidiSTUDENT GIVEN NAMES: Ratnakar Reddy

I declare that this assignment is my individual work. I have not worked collaboratively nor have I copied from any other students work or from any other source except where due acknowledgement is made explicitly in the text, nor has any part been written for me by another person. I realize that the penalties may ensure for late submission or any other breaches of assignment rules.

AbstractThe present study deals about the ICT requirements which the Langdon primary school has requested for and the study has given all the information about what the primary school would need that is the network and ICT devices for proper internet access for the school.

1. IntroductionThe chosen scenario for the present study is Langdon primary school, the school was built in the year 2012 and the school provides education for the students from Grade prep to Grade 6. At the beginning the school has 140 students in 2012 now in 2014 they have up to 640 students. The school has demanded for some of the ICT requirements to provide the internet and desktop services to the staff and the students.The following are the main ICT requirements needed by the school: Enhance pedagogical practice concentrating on Literacy and Numeracy Introduce 1-1 iPads from Prep-Year 3 Continue 1-1 netbooks for Years 4-6 Apps to embed ICT and Inquiry across all curriculum areas Introduce Languages online Embed the use of data collection and analysis to drive student learning

The above points were the ICT requirements needed for the school and also the school needs the wireless services as well as the students from grade 4-6 have to write their assignments and do project so wireless connection for their iPads is another major requirement. All the internet access will be provided from the Victorian Education department and a proxy server which is installed in the school will share the data provided from the main public server of the Victorian Education Department this type of internet access is mainly provided so that the students or the staff may get safe and secure internet and they will not be get exposed to pornographic websites.

2. Data and Network Communications within the ICT requirementsAll the Post and the grade schools that needs to set up the Information and Communication Technology in their school must arrange appropriately with a percentage of the rules when proceeding onwards to further stages. These rules are connected with the incorporation of the foundation needs of the ICT with the building structure, the school powers must choose up on the expansions for the new ICT that needs to be introduced. On account of officially existing school which needs ICT for such should extend a broadening or repair task is given which is an adaptable down to earth approach should be required, in such cases the experts will be able to point out the issues with the Planning and Building Unit to begin the ICT outline. At that point after complete examination the division of the Education and Science will at last see the requisition and will endorse it if everything is correct (Abbott L., & Metcalfe N., 2004).

3. Network Model for ICTFor giving the internet access all through the school a legitimate system model must be chosen and the system model is characterized as a database model which is viewed as an adaptable method for distinguishing the items and their connections, the different layers of the system model is that it is seen in a sort of chart where the item sorts are spoken to as hubs and relationship sorts as bends (Abbott L., & Metcalfe N., 2004).For the current scenario of Langdon Primary school the network model which has been chosen is OSI model where the internet access can be provided through the seven layers. This model has seemed to be very much appropriate for the present case so OSI has been chosen as their network model.

The OSI, or Open System Interconnection, model characterizes a systems administration structure to actualize conventions in seven layers. Control is passed starting with one layer then onto the next, beginning at the provision layer in one station, and undertaking to the bottom layer, over the channel to the following station and go down the chain of command (Charles Kozierok M., 2005).

There's truly nothing to the OSI model. Actually, its not by any means substantial. The OSI model doesn't do any capacities in the systems administration process; it is a calculated system so we can better comprehend complex communications that are going on. The OSI model takes the undertaking of internetworking and partitions that up into what is alluded to as a vertical stack that comprises of the accompanying layers (Charles Kozierok M., 2005):

Figure 1: OSI MODEL, Source: (Charles Kozierok M., 2005)

Figure 2: OSI Model Clear Illustration of All Seven Layers, Source: (Charles Kozierok M., 2005)

Physical Layer 1: (Charles Kozierok M., 2005)This layer passes on the bit stream - electrical drive, light or radio sign - through the system at the electrical and mechanical level. It gives the fittings method for sending and getting information on a transporter, including characterizing links, cards and physical perspectives. Quick Ethernet, Rs232, and ATM are conventions with physical layer parts.

Data link Layer 2: (Charles Kozierok M., 2005)At this layer, information bundles are encoded and decoded into bits. It outfits transmission convention learning and administration and handles mistakes in the physical layer, stream control and edge synchronization. The information connection layer is separated into two sub layers: The Media Access Control (MAC) layer and the Logical Link Control (LLC) layer. The MAC sub layer controls how a machine on the system gets access to the information and consent to transmit it. The LLC layer controls outline synchronization, stream control and mistake checking.

Network Layer 3: (Charles Kozierok M., 2005)This layer gives exchanging and directing advances, making sensible ways, known as virtual circuits, for transmitting information from hub to hub. Steering and sending are capacities of this layer, and additionally tending to, internetworking, lapse taking care of, blockage control and parcel sequencing.

Transport Layer 4: (Charles Kozierok M., 2005)This layer gives transparent exchange of information between end frameworks, or has, and is in charge of end-to-end slip recuperation and stream control. It guarantees complete information exchange.

Session Layer 5: (Charles Kozierok M., 2005)This layer creates, oversees and ends associations between provisions. The session layer sets up, directions, and ends discussions, trades, and dialogs between the provisions at each one end. It manages session and association coordination.

Presentation Layer 6: (Charles Kozierok M., 2005)This layer gives freedom from contrasts in information representation (e.g., encryption) by making an interpretation of from requisition to system organization, and the other way around. The presentation layer attempts to convert information into the structure that the provision layer can acknowledge. This layer organizes and scrambles information to be sent over a system, giving opportunity from similarity issues. It is usually called as the linguistic use layer.

Application Layer (Layer 7) (Charles Kozierok M., 2005)This layer helps provision and end-client forms. Correspondence accomplices are recognized, nature of administration is distinguished, client confirmation and protection are considered, and any stipulations on information linguistic use are recognized. Everything at this layer is requisition particular. This layer gives requisition administrations to document exchanges, email, and other system programming administrations. Telnet and FTP are provisions that exist totally in the requisition level. Layered provision architectures are a piece of this layer.

4. Data communication InstrumentsAs the Langdon needs sophisticated ICT technologies fiber optic cables are utilized for the fast and easy delivery of the data and ADSL2+ modems are equipped for data communication (William Stallings, 2006).An optical fiber link is a link holding one or more optical strands that are utilized to convey light. The optical fiber components are exclusively covered with plastic layers and held in a defensive tube suitable for the earth where the link will be sent. Distinctive sorts of link are utilized for diverse provisions, for instance long separation telecom, or giving a fast information association between distinctive parts of a building (William Stallings, 2006).

Optical fibers are extremely solid, yet the quality is radically decreased by unavoidable microbial surface imperfections inborn in the assembling methodology. The starting fiber quality, and in addition its change with time, must be viewed as in respect to the anxiety forced on the fiber throughout taking care of, cabling, and establishment for a given set of ecological conditions. There are three fundamental situations that can prompt quality debasement and disappointment by instigating imperfection development: element weakness, static uniform, and zero-anxiety maturing (William Stallings, 2006).

Figure 3: Optical cable, Source: (Charles Kozierok M., 2005)

5. Networking For the best possible correspondence which needs to be accommodated all the rooms of the showing staff, address corridors, library and managerial building of the school a system framework must be given which comprises of the equipment and programming supplies which will help in information correspondence and asset imparting. A system typically comprises of transmission equipment, gadgets to interconnect the transmission media and to direct the transmissions, and programming to recode and arrangement the data and additionally to perceive and redress the issues (William Stallings, 2006).

The three types of networks which are used mostly are LAN Local Area NetworkWAN Wide Area NetworkVPN Virtual Private Network

Local Area NetworkLocal area network are the majorly utilized sort of system, they were outlined as an option for point-to-point associations which are really not that expensive. This network mostly relies on upon the imparted media.

Wide Area NetworkWAN is a kind of system which will have the capacity to associate numerous amounts of locales for more remote separation, to numerous workstations. WAN system utilizes parcel switches to convey the information successfully and with rapid information exchanges.

Virtual Private NetworkVPN is created for the most part for the openly available foundation, in the same way as the web or people in general phone system. These utilize an encryption and have a powerful client confirmation. Ordinarily a VPN is considered to be as a WAN. A VPN will help the comparative intranet benefits as that of the conventional WAN, however it likewise will help the remote access benefit also. This will be compelling for working from home. In VPN the server will validate the client and will develop the flip side of the tunnel. At that point the VPN programming will begin the information encryption and bundles it into an IP parcel and will convey it through the tunnel, where it is unscrambled at the flip side.For Langdon Primary School the internet data is provided by the Victorian Education Department where the web content is redirected to the school through the proxy server so for the school LAN network has been chosen as this network covers the limited area within the school.

Figure 4: LAN Model, Source: (Charles Kozierok M., 2005)

6. Network DevicesRouterA Router can be considered as the fittings gadget which unites two or more systems. These are the considered to be as the spine gadget of the web, which join the different system advances. Each individual switch will be appointed with two or more IP addresses as every individual IP location comprises of a prefix that tags a physical system. Prior to the parcel is gone to the steering programming, it is examined. In the event that it is known to be debased then it is evacuated (William Stallings, 2006).

FirewallA firewall might be a machine, switch, or few different specialized gadgets which manages the data between the systems. It acts like a security and is referred to be as the first-line safeguard which ensures from the ambushes of the outside world. A firewall might be programming or equipment subordinate. The fittings subordinate firewall is a specific switch which has an additional channel and administration capabilities. The product subordinate firewall will work on top of the operation framework and will transform the PC into the firewall (William Stallings, 2006).

Hypothetically, they might be considered as Network layer or Application layer. The Network layer firewalls are fast and they control the activity basing on the area locations and the source and port numbers from this information they will pick whether they have to move ahead the information or uproot it. The provision layer firewalls won't encourage straightforwardly between the systems. They are regularly the hosts running the substitute servers. Substitute servers can apply the convention particular security as they have the learning of the provision convention that is constantly used. In the present situation for the school as the substitute server is constantly utilized from the Victorian Education Department, so provision layer firewalls are utilized.

Wireless services can be provided through wireless ethernet services as the students of the Langon primary School grade 4 to 6th have to do their assignment and projects and they have been provided with the iPads as well by the government.

7. Cost EstimationEQUIPMENT REQUIRED

TOTAL COST ESTIMATED

Data Communication Equipment

1000 $

Software and Security Support Services

1500 $

8. Conclusion The present study describes the Langdon primary school ICT requirements and every detail of the networking and data communication equipment has been provided and finally the network devices were also concentrated and the cost estimation was also projected.References

Abbott, L., Austin, R., & Metcalfe, N. (2004), The global classroom: advancing cultural awareness in special schools through collaborative work using ICT. European Journal, Special Needs Education, 19 (2) 225240.

Becta, (2005), Tablet PCs in schools. Case study report. Coventry: Available Fromhttp://partners.becta.org.uk/index.php?section=rh&catcode=_re_rp_ap_03&rid=11279Bush, D., & Meyer (2002), Some Internet Architectural Guidelines and Philosophy, Internet Engineering Task Force.Behrouz, A., & Forouzan, (2003) Data Communications and Networking.

Charles Kozierok, M. (2005) "The TCP/IP Guide", No Starch Press 2005.

McFarlane, A. & Sakellariou, S. (2002), The role of ICT in science education. Cambridge Journal of Education,. 32 (2) 219232.

William Stallings, (2006) Data and Computer Communications, Prentice Hall, ISBN 0-13-243310-9.

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