References FitzGerald Jerry Dennis A Durcikova A 2015 Business Data

References fitzgerald jerry dennis a durcikova a 2015

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FitzGerald, Jerry, Dennis, A., Durcikova, A. (2015) Business Data Communications and Networking , 12thEdition[VitalSource Bookshelf Online]. Retrieved from 14.(TCO D) What is an RFP, and why do companies use them?(Points : 25)A request for proposal (RFP) is a document that an organization posts to elicit bids from potential vendors for a desired IT solution. The RFP specifies what the customer is looking for and establishes evaluation criteria for assessing proposals. Most organizations develop a request for proposal (RFP) before making large network purchases. RFPs specify what equipment, software, and services are desired and ask vendors to provide their best prices. Some RFPs are very specific about what items are to be provided in what time frame.An RFP generally includesbackground on the issuing organization and its lines of business, a set of specifications that describe the sought-after solution, and evaluation criteria that disclose how proposals will be graded. RFPs may also include astatement of work, which describes the tasks to be performed by the winning bidder and a timeline for providing deliverables. An RFP may be issued for a number of reasons. In some cases, the complexity of an IT project calls for a formal RFP. An organization can benefit from multiple bidders and perspectives when seeking an integrated solution calling for a mix of technologies, vendors and potential configurations. A business moving from a paper-based system to a computer-based system, for example, might request proposals for all the hardware, software, and user training required to establish and integrate the new system into the organization. A simple hardware upgrade, in contrast, may only involve issuing arequest for quotationto a single vendor. The RFP process helps the company to refine and determine what to purchase. It establishes a formal process that becomes well-documented and as a result leaves the company with not only a rationale for what has been purchased but documented proof of how the company arrived at its conclusions as to what vendors would be awarded contract(s) from the company.11.(TCO A) What is a circuit? What is the meaning of multiplexing?(Points : 25)Circuit means cable modem in simplest form over which messages can flow. The circuitis the pathway through which the messages travel. It is typically a copper wire, although fiber-optic cable and wireless transmission are becoming common. There are many devices in the circuit that perform special functions such as switches and routers. Multiplexingmeans to break one high-speed physical communication circuit into several lower-speed logical circuits so that many different devices can simultaneously use it but still “think” that they have their own separate circuits (the multiplexer is “transparent”). It is multiplexing without multiplexing, the Internet would have collapsed in the 1990s.Multiplexing often is done in multiples of 4 (e.g., 8, 16). Note that two multiplexers are needed for each circuit: one to combine the four original circuits into the one multiplexed circuit and oneto separate them back into the four separate circuits. The primary benefit of multiplexing is to save money by reducing the amount of cable or the number of network circuits that must be installed.
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(TCO B) Describe how a web browser and web server work together to send a web page to a user.(Points : 25)The Webserver stores documents and graphics that can be accessed from any Web browser. In order to get a page from the web, the user must type the internet uniform resource locator (URL) for the page they wants, or click a link that provides the URL. The URL specifies the internet address of the web server and the web directory and name of the specific page wanted. In order for the requests from the web browser to be understood by the web server, they must use the same standard protocol. The standard protocol for communication between a web browser and a web server is Hyper Text Transfer Protocol (HTTP). The short answer is that the software on your computer (or any device) creates a message composed in different software languages (HTTP, TCP/IP, and Ethernet are common) that requests the page you clicked. This message is
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