Shane Mallory IT 200 3-2 Activity Network Configuration Model

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Southern New Hampshire University *

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IT-200

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Computer Science

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Dec 6, 2023

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Mallory 1 Shane Mallory Professor Smith IT-200 1/18/2023 3-2 Activity: Network Configuration Model 1. IP address and DNS a. An IP address is the virtual address given by the network to any given device connected to said network, everything from computers, printers, routers, smart phones and even tablets have IP address for sending and receiving information of the network. Without the IP address information being sent or received wouldn’t know where to go or how to interpret the information. DNS (Domain Name System) is the system for organizing and converting names of webpages and servers. The use of DNS enables a webpage to be accessed without having to enter the IP address simply by using an assigned alphabetic name instead. Such as, google.com versus its IP address of 172.253.112.99. 2. Server and Client a. A server is a centralized host computer that responds to requests given by devices and users connected to the server. They can provide access to resources and deliver data to the desired computer over the internet or a local network. A client is the device that requests the data and resources from the server this can be computer or any other connected device on the network. 3. VPN (Virtual Private Network)

Mallory 2 a. A VPN is a private network within a network that gives privacy and extra security for every device that accesses the internet or other network using the VPN. They use what is called “tunneling” to create a path through the public network that is secured and safe to protect the user from threats. 4. Firewalls a. A firewall is a security device that monitors received and sent data and permits or blocks that data based on a set of security instructions. They are detrimental to have a secure access point to the Internet as without any data could be sent through or received without any form of monitoring. 5. LANs and WANs a. LANs (Local Area Network) are networks that are typically within a building or house. They provide access to the Internet to all the devices that are contained within the LAN whether that be through a wired or wireless connection. It is essentially a small network of that enables the devices to connect to larger networks. Such as WANs (Wide Area Network), they are larger networks that can cover much larger areas and such as cities or towns. Large business or campuses have their own private WANs to provide access to the LANs held within the large area. The Internet is perhaps the largest example of a WAN.

Mallory 3 For Justin’s small photography business, this network model should be sufficient as it displays all the devices that he may need to use for his business as well as how those devices will interact with one another. Firstly, the modem connects to the Internet through a wired connection such as a coaxial or fiber optic cable. Then he uses the Router connected to the Modem to give his devices access to the Internet, his IP Phone, printer, and laptop could all be connected via WI-FI. Though it may be beneficial to his business to connect his desktop PC via an Ethernet cable to

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Mallory 4 allow for a more stable connection. The printer and digital camera would be very beneficial to his business as the camera could transfer over any pictures to his PC or laptop to then be printed for sale in his business. Though in between the connection from the router to the devices is a firewall to protect the devices and the sensitive information stored on them from any harm such as viruses or malware. Justin could then use his clients (laptop, PC, IP Phone) to connect to a server that stores all his data for his business and to conduct his everyday tasks needed to keep his business running. Justin would benefit greatly from utilizing the DNS as he could create a website that his customers could use to learn more about what his business has to offer, as well as purchase his merchandise online rather than solely in store. One added feature Justin could consider using would be VPN to further protect his data from being hacked, using a VPN would protect him and his business while shopping online and a corresponding with his customers online. All these components make up the LAN contained within his house and small business and with each connected device utilizing a unique IP address it will ensure that his business runs as smoothly as possible. Citations: Fox, R., & Hao, W. (2017). Internet Infrastructure: Networking, Web Services, and Cloud Computing (1st ed.). CRC Press. https://doi-org.ezproxy.snhu.edu/10.1201/9781315175577 Fox, R. (2013). Information Technology: An Introduction for Today's Digital World (1st ed.). Chapman and Hall/CRC. https://doi-org.ezproxy.snhu.edu/10.1201/b16033

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