Communication Networks

timer Asked: Feb 8th, 2019
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Question Description

  • All sources and references (including lecture notes, reading assignments, video assignments, and external sources) should be listed with full information.Readings:
    And please see the attached fileYou should provide at least 2 sources per question.
  • Define two communication technologies: (a) WiFi (one paragraph) and (b) Cellular Network (one paragraph)
  • Compare WiFi standards: 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac with Range and Speed – one table.
  • Compare the evolution of cellular networks (cell phone): 1G, 2G, 3G and 4G with Data Transfer Speed (download speed) – one table.
  • What is your ISP (internet service provider) speed at home? What is your WiFi standards with your router at home? What is your (or your family/friend’s) phone’s data speed? Compare your ISP and phone’s data speed.
  • With your ISP speed, how many books you can download in 1 min? You can assume there are 500,000 characters (500 KByte) in a book of 250 pages, counting the spaces.
    1. BPS means bits per second.
    2. 8 bits is 1 byte.
    3. 10 Mbps means 10 mega bits per second – 10,000,000 bits per second
    4. 10,000,000/8bits = 1,250,000 bytes (characters)
    Please let me know if you have any questions!

Unformatted Attachment Preview

Information Systems Program Networking Information Systems in Business James Lee Networking a set of computers connected together for the purpose of sharing resources Computer Network Network Topologies Network Protocol OSI Reference Model Benefits of Layers of Networking The Internet Internet Backbone Computer Network a group or system of interconnected people or things A network is defined as a group of two or more computer systems linked together. There are many types of computer networks: • • • • • local-area networks (LANs): The computers are geographically close together wide-area networks (WANs): The computers are farther apart and are connected by telephone lines or radio waves campus-area networks (CANs): The computers are within a limited geographic area, such as a campus or military base metropolitan-area networks (MANs): A data network designed for a town or city home-area networks (HANs): A network contained within a user's home that connects a person's digital devices Network Topologies Network Protocol a set of rules or procedures for transmitting data between electronic devices • In order for computers to exchange information, there must be a preexisting agreement as to how the information will be structured and how each side will send and receive it. • Protocols are established by international or industrywide organizations. Perhaps the most important computer protocol is OSI (Open Systems Interconnection), a set of guidelines for implementing networking communications between computers. • Among the most important sets of Internet protocols are TCP/IP,HTTPS, SMTP, and DNS. • Ethernet is the most widely implemented local area network (LAN) OSI Reference Model Open Systems Interconnection • OSI is reference model for how applications can communicate over a network. • A reference model is a conceptual framework for understanding relationships. • The purpose of the OSI reference model is to guide vendors and developers so the digital communication products and software programs they create will interoperate, and to facilitate clear comparisons among communications tools. • Most vendors involved in telecommunications make an attempt to describe their products and services in relation to the OSI model. Benefits of Layers of Networking • • • • • • It prevents changes in one layer from affecting other layers. It describes what functions occur at each layer of the model that encourages industry standardization. Dividing network communication process in smaller component makes software development, design, and troubleshooting easier. Standardization of network components allows multiplevendor development. It allows different types of network hardware and software to communicate. Dividing network in layers make network administrators life easier. They can troubleshoot issue more quickly and effectually by looking in layer that is causing issue rather than finding it entire network. It also makes learning easier. The Internet Inter-Networking The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link billions of devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and peer-to-peer networks for file sharing. Internet Backbone References ...
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Tutor Answer

School: Purdue University


Surname 1

Affiliate Institution:
Communication Networks
(a) Wi-Fi
Wi-Fi basically refers to a wireless communication network technology that utilizes radio
electromagnetic signals to provide integrated network connections (Rouse...

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Good stuff. Would use again.

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