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Exam 3: Networks and the Cloud

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Question 31

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Which of the following statements is true about domain names?

A) It is a worldwide-unique name that is associated with a particular Internet address.
B) A nation's government is the only body allowed to register domain names on Internet directories.
C) An Internet address can be associated with only one domain name.
D) It is usually written before a protocol in a URL.

E) A) and B)
F) A) and C)

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Question 32

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Hypertext Markup Language (html)is the most common language for defining the structure and layout of Web pages.

A) True
B) False

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Question 33

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An html ________is a notation used to define a data element for display or other purposes.

________________is the protocol used between browsers and Web servers.

Control of data is the primary advantage of cloud hosting.

A private internet used exclusively within an organization is sometimes called a/an _______.

Platform as a service (PaaS)is where vendors provide hosted computers,an operating system,and possibly a DBMS.

Up to 500 user sites can share a cable line,and performance varies depending on how many other users are sending and receiving data.

The user tier consists of computers,smartphones,and other devices that have browsers that request and process.

The cloud is the elastic leasing of pooled computer resources over the Internet.

Explain HTTP and HTTPS in general terms.

A personal area network (PAN)connects devices around a single person.

Wide area networks are used to connect computers that reside in a single geographic location.

Why have cellular networks become popular?

Explain what net neutrality is and how it would affect carriers:

An address on the Internet is called a(n) ________.

Which of the following is a characteristic of cloud hosting?

Cascading Style Sheets (CSS)define the fonts and layout of all elements on web pages and are an example of service-oriented architecture (SOA).

What are two factors have made cloud-based hosting advantageous today. First,processors,data communication,and data storage are so cheap as to be nearly free.At the scale of a Web farm of hundreds of thousands of servers,processing for an hour costs essentially nothing,as the 1.5-cent price per hour indicates.Because data communication is so cheap,getting the data to and from that processor is also nearly free.Second,advances in SOA and protocol adoption have made the cloud even more economical,transparent to the user,and convenient.

According to economies of scale,the average cost of production decreases as the size of the operation increases.