University:
Kentucky State University
Course:
COS 100 | Intro to Computers
Academic year:

2022
Views:

456

Pages:

1
Author:

Alexa Livingston

Chapter 4 - Networks and Cloud Computing Essay 81. Briefly explain the passing of packets over the Internet. ANSWER: The various telecommunications networks that are linked to form the Internet work much the same way— they pass data around in chunks called packets, each of which carries the address of its sender and its receiver along with other technical information. The set of conventions used to pass packets from one host to another is the Internet Protocol (IP). Many other protocols are used in connection with IP. The best known is the Transmission Control Protocol (TCP). After a network following these standards links to the Internet’s backbone, it becomes part of the worldwide Internet community. 82. Explain the rules that apply to using domain names. ANSWER: Domain names always have at least two parts, with each part separated by a dot (period). For some Internet addresses, the far right part of the domain name is the country code, such as au for Australia, ca for Canada, dk for Denmark, fr for France, de (Deutschland) for Germany, and jp for Japan.. Many Internet addresses have a code denoting affiliation categories, such as com for business sites and edu for education sites. The far left part of the domain name identifies the host network or host provider, which might be the name of a university or a business. 83. Define cloud computing and identify the business benefits of cloud computing. ANSWER: Cloud computing refers to a computing environment where software and storage are provided as an Internet service and accessed with a Web browser. By outsourcing business information systems to the cloud, a business saves on system design, installation, and maintenance. The New York Stock Exchange (NYSE), for example, is starting to offer cloud-computing applications that let customers pay for the services and data they use on Euronext—a European market for stocks, bonds, and other investments. 84. Briefly describe how a Wi-Fi network operates. ANSWER: With a Wi-Fi wireless network, a user’s computer, smartphone, or cell phone has a wireless adapter that translates data into a radio signal and transmits it using an antenna. A wireless access point, which consists of a transmitter with an antenna, receives the signal and decodes it. The access point then sends the information to the Internet over a wired connection. When receiving data, the wireless access point takes the information from the Internet, translates it into a radio signal, and sends it to the device’s wireless adapter. 85. How is the Internet of Things different from the world-wide web? ANSWER: InternentofThings(IoT)isacollectionofobjectsthatsendinformationovertheinternettoservers, applicationsorhumans.Whereastheworldwidewebismadeupofserversthatservewebpageswrittenin HTMLtoclientbrowsers.