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Chapter 6 The Cloud
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aCtive revieW

Use this Active Review to verify that you understand the ideas most appropriate option. Define CDN and explain the purpose
and concepts that answer the chapter’s study questions. and advantages of a CDN. Explain how Web services can be used
internally.
Q6-1 Why is the cloud the future for most
organizations? Q6-5 How can Falcon Security use the
cloud?
Define cloud and explain the three key terms in your definition.
Using Figure 6-3 as a guide, compare and contrast cloud-based First, state why Falcon is likely to use the cloud. Name and
and in-house hosting. Explain three factors that make cloud describe SaaS products that Falcon could use. Explain several
computing possible today. When does it not make sense to use a ways that Falcon could use PaaS offerings. Summarize why it is
cloud-based infrastructure? unlikely that Falcon would use IaaS.

Q6-2 What network technology supports Q6-6 How can organizations use cloud
the cloud? services securely?

Define computer network. Explain the differences among PANs, Explain the purpose of a VPN and describe, in broad terms,
LANs, WANs, intranets, internets, and the Internet. Describe how a VPN works. Define the term virtual and explain how
protocol and explain the purpose of protocols. Explain the key it relates to VPN. Define private cloud. Summarize why the
distinction of a LAN. Describe the purpose of each component benefits of a private cloud are questionable. What kind of
in Figure 6-5. Define IEEE 802.3 and 802.11 and explain how organization might benefit from such a cloud? Explain why it is
they differ. List three ways of connecting a LAN or computer to unlikely that even very large organizations can create private
the Internet. Explain the nature of each. clouds that compete with public cloud utilities. Under what
circumstance might a private cloud make sense for an organi-
Q6-3 How does the cloud work? zation? Define VPC and explain how and why an organization
might use one.
Explain the statement, “The Internet is an internet.” Define IP
address and explain the different ways that public and private IP Q6-7 2026?
addresses are used. Describe the purpose of a domain name and
explain how such names are associated with public IP addresses. What is the likely future for the cloud? Summarize the good and
Explain the role for agencies like GoDaddy. Define URL. bad news the cloud brings. Explain why the photo in Figure 6-2
Define three-tier architecture and name and describe the role is disturbing. Explain the statement, “The cloud lifts all boats.”
of each tier. Explain the role of each tier in Figure 6-10 as well Describe three categories of remote action systems. Explain
as how the pages in Figures 6-9 and 6-11 are processed. Using how remote systems will increase the value of super-experts but
the department analogy, define SOA and explain why depart- diminish local mediocrity. What can other-than-super-experts
ments are encapsulated. Summarize the advantages of using do? Summarize how this 2026 discussion pertains to your
SOA in the three-tier architecture. career hopes.
Define TCP/IP protocol architecture and explain, in general
terms, the purpose of http, https, smtp, and ftp. Define the pur- Using your Knowledge with
pose and role of WSDL, SOAP, XML, and JSON. State a key differ- Falcon Security
ence between XML and JSON.
Name the principal advantage of the cloud to Falcon Security.
Q6-4 How do organizations use the For hosting its data, which cloud offering—SaaS, PaaS, or
cloud? IaaS—makes the most sense, given the size and nature of
Falcon’s business? Explain how Falcon could use that offering.
Define SaaS, PaaS, and IaaS. Provide an example of each. For If Falcon were larger and employed a more sophisticated IT staff,
each, describe the business situation in which it would be the name another alternative that would make sense. Explain why.