Requirements for Design Process

Question:

Discuss About The Definitive Of Broadband Wireless Networks?

The network design following the criteria mentioned will be carried out. The requirements will be formulated to meet the features of a safe network. Proper connections and justification for using different devices and their purpose will be mentioned. The network will be designed by keeping the user communities in mind.

To design a WAN for two offices with business constraints and security features.

Sydney office and Singapore office should be provided with a desirable Network setup establishing proper communication and connection between the client and the servers.

In implementation process the requirements are the major part. The design of this project is to develop and run the network for both the offices located in Singapore and Sydney. This is the main requirement of this project. The requirements should meet the designing of the system and running functional architecture. (Ecomputernotes.com, 2017).

To identify the requirements of all the network. To generate IP address for internal communication. The design process should meet all the hardware requirements. To protect the system and files the security should be able to provide for every level. LAN network is connected to the all systems. The proper channel should be used for communication and security purposes, if there is any miscommunication will be happened. The whole area of the building should be covered by the network. To reduce the cost for as much as possible in the organization. (Kushki, Plataniotis and Venetsanopoulos, 2012).

The user communities who use the network includes engineers, online customers, Data center admins, Internal email users ,Network Administrators and Other employees. Network applications are nothing but an architecture which uses client-server based communications. Server asks like a master and it provides service to the client. Client can be a computer, laptop or any device used by the end-user. A server to handle the Sydney office and another server to handle the Singapore office is essential. In addition to this the number of servers can be increased according to the requirement or the number of clients connected. (Mankell and Segerberg, 2012)

The following requirements are the other requirements that must be used for design process. The voice requirements are automatic call distribution. Virtual networking, voice conferencing, Interactive voice responses, voicemail, computer telephony integration. The design requirements for the infrastructure of LAN is described below. protocols for networking ,policy enabled networks, cabling media, switches, hubs, routers, multimedia, the tools must be needed for managing the networks like simulation, bandwidth are needed for designing the network. The wide area network structure requires the following technologies. For example transport technology like frame relay, ATM. and the other requirements are multimedia and multiplexing. The following assumptions are taken for designing the network. To implementing the project all funds are made available. To making the cost as low for implementation. The priorities will not cause any delay for implementation changes in delivering the project deliverables. After getting the proper permissions from the authorities, tower of antenna is installed if it is necessary. Based on the work plan preparation, all the users must agree for that to implementing the process. The bandwidth of the proposed system uses1mbps for the network. (Lutz, 2012).

User Communities and Network Applications

The network diagram provides the network connections to two offices located at Sydney and Singapore. The network cloud is connected with two main routers each for an office. One of the main router is connected with other two routers one helping the server connections and other helping the client connections. The same setup is used for the other main router. Wide Area Network is established between the two offices. Firewall is also added for the purpose of security.

WAN is the abbreviation of Wide Area Network. It exists over a large scale area. Two or more LANs can be connected with the help of WAN. The protocol used by WAN to establish communication with the devices like routers, switches, modems and firewalls is TCP/IP protocol.

LAN is the abbreviation of Local Area Network. A LAN network is spread over small area. LAN is used for the interconnection of devices over a smaller area. LAN can interconnect devices such as scanners, storage devices and printers.

A hardware device which assist to receive, analyze and move a packet from one network to another network is called the router. Router has difference in performance with switches and hubs. Router has the capability to analyze the data where switches and hubs can be only used to implement transfers.

Firewalls is a security device for external network devices. It provide the service for Web, e-mail DNS and FTP. It operates based Tcp, source IP address, destination IP address, source port number, destination port number. It is used to control the traffic diminished.

It is used to connect computer into other devices. It handles only the packets of data. It saves the bandwidth. It is more efficient. With the help of switch, one cloud allow or disallow the connection for the circuit.

1. a) Final network diagram

Source file is attached here.

1. b) Table of devices, software and total cost estimation

        The implementations used are the data base management for the two Sydney and Singapore branches and also the server creation to handle the webpages and websites and databases of the two branches. (Bayer, 2011)

1. c) The explanation and justification of the network diagram

The network diagram is designed following the top down methodology. The network cloud supplies internet to the two company’s one at Sydney and other at Singapore. Router with IP address 172.16.0.29 is set for the Sydney office. The main router is connected with the firewall for the purpose of security. The firewall is connected to the switch and the switch has two other routers router1 and router 2 connected to two of its ports. Router 1 has establishes connection to the servers handling the databases and serving the clients. The router two connects different clients with the server with the help of the hub. The same setup is designed for the Singapore office also. WAN provides the internet connectivity between the two networks Sydney office and the Singapore office. (Edmond, 2013)

1. d) The test plan that can be used to test the network

WAN and LAN Network

A test plan is nothing but the plan that is done to test the behavior of the network. The test plan should cover the testing of following features.

• Resources
• Responsibilities
• Criteria
• Approach
• Procedures

The types of testing that is done to test the performance of the network included the following

1. Volume testing
2. Stress Testing
3. Recovery testing
4. Security testing
5. Performance testing

The goal of volume testing is to measure the application performance. It is done based on the variation of database. It is one type of nonfunctional testing. It is little bit different from load and stress testing.

It is used to measure the stability of the software application.it is also used to identify the failure of the system.it is a nonfunctional testing. The load limit of the stress testing is above threshold of break.

It is used to check the staying power and response time. It fix the SLA for the software application. The load limit of the load testing is up to threshold of break.

• Write and read the data continuously in the hard disk.
• Send large job to test the printer.
• Access many mail boxes to test the mail server.
• Run many application in the server.

It is commonly used in government work station, enterprises, schools and colleges. The network security is needed in five levels. The five levels are network, Application, Host, data and perimeter.

1. e) The detailed test script for one of the tests in the test plan

Security testing is nothing but the vulnerability scanning. Security testing can be done with the following soft wares or the devices like file integrity checkers, log reviewers, WAN drive testers and also by using some of the methods like penetration testing. (Goodall, 2016)

In penetration testing, the testers evaluate the security features of a network based on the design and the implementation. Penetration testing is nothing but simulating the attack tools forcefully and test whether the network is able to resist the harm generated by the attack tools. Penetrating testing has four stages. They are

• Planning
• Discovery
• Attack
• Reporting

Conclusion

The network is designed following the provided criteria. The network is designed with safety features. Justification for the design and the network is given.

References

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