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Which of the following is an advantage of a content delivery network?


A) It increases the load time of Web pages for the users.
B) It provides protection from denial-of-service (DOS) attacks.
C) It increases the reliability by storing the data on a single, large server.
D) It increases the load on the original server.

E) A) and B)
F) B) and D)

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Sireus Corp.has availed a cloud-based service.As this service provides hardware and operating systems, Sireus Corp.can easily install its software on this cloud product.Which of the following services has the company availed from its cloud vendor?


A) unified communications as a service (UCaaS)
B) infrastructure as a service (IaaS)
C) platform as a service (PaaS)
D) software as a service (SaaS)

E) None of the above
F) A) and D)

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If an organization opts for software as a service (SaaS) , it will have to ________.


A) install an operating system on the server
B) purchase licenses for software replication
C) transfer data and develop procedures
D) install a database management system

E) B) and C)
F) All of the above

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C

How are communications secured from snooping in a virtual private network?

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In order to secure virtual private network (VPN)communications over the public Internet, the VPN client software encrypts, or codes, messages so their contents are protected from snooping.Then, the VPN client appends the Internet address of the VPN server to the message and sends that package over the Internet to the VPN server.When the VPN server receives the message, it strips its address off the front of the message, decrypts the coded message, and sends the plain text message to the original address inside the LAN.In this way, secure private messages are delivered over the public Internet.

To use software as a service (SaaS), a user has to just sign up for the service and learn how to use it.

A) True
B) False

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Content delivery networks (CDNs)increase a Web page's load time.

A) True
B) False

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A virtual private cloud allows organizations to gain the advantages of cloud storage for the portion of data that need not be physically controlled.

A) True
B) False

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Teleaction increases the value of local mediocrity.

A) True
B) False

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Which of the following is true of a virtual private network (VPN) ?


A) It provides a secure connection for information transmitted over the public Internet.
B) It does not encrypt messages.
C) It is limited to organizational use.
D) It can be used to store highly sensitive information of an organization.

E) B) and D)
F) All of the above

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A ________ is an information system that stores user data in many different geographical locations and makes that data available on demand.


A) virtual private network
B) content delivery network
C) wide area network
D) local area network

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

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Service oriented architecture (SOA)is a way of designing computer programs so that they can be combined flexibly.

A) True
B) False

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What is a virtual private cloud? What are its advantages?

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A virtual private cloud (VPC)is a subset...

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What are the factors that have made cloud-based hosting advantageous?

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Three factors have made cloud-based hosting advantageous today.First, processors, data communication, and data storage are so cheap that they are nearly free.At the scale of a Web farm of hundreds of thousands of processors, providing a virtual machine for an hour costs essentially nothing.Data communication is so cheap that getting the data to and from that processor is also nearly free.Second, virtualization technology enables the near instantaneous creation of a new virtual machine.The customer provides (or creates in the cloud)a disk image of the data and programs of the machine it wants to provision.Virtualization software does the rest.Finally, Internet-based standards enable cloud-hosting vendors to provide processing capabilities in flexible, yet standardized, ways.

Explain with an example how platform as a service (PaaS)works.

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Platform as a service (PaaS)is a categor...

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What is a private cloud? What are its limitations?

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A private cloud is a cloud that is owned...

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Cloud resources are pooled because many different organizations use the same physical hardware.

A) True
B) False

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An online service provider provides its users with hosted computers, an operating system, and a database management system (DBMS) .This allows customers to add their own applications to the hosted services.Which of the following cloud-based offerings is being provided to the users?


A) unified communications as a service (UCaaS)
B) platform as a service (PaaS)
C) infrastructure as a service (IaaS)
D) software as a service (SaaS)

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

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A virtual private network (VPN)uses encryption and decryption to protect VPN communications from snooping.

A) True
B) False

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A routing server determines which content delivery network (CDN)server should respond to a request in real time.

A) True
B) False

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Why is cloud hosting preferred to in-house hosting?

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Cloud hosting allows the number of serve...

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