Chat with AIExam 6: The Cloud
How are communications secured from snooping in a virtual private network?
(33) 
VerifiedIn 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.
What are the factors that have made cloud-based hosting advantageous?
(33) VerifiedThree 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.
If an organization opts for software as a service (SaaS), it will have to ________.
(35) VerifiedC
A routing server determines which content delivery network (CDN)server should respond to a request in real time.
(32) Which of the following is true of a virtual private network (VPN)?
(36) A virtual private cloud allows organizations to gain the advantages of cloud storage for the portion of data that need not be physically controlled.
(32) A virtual private network (VPN)uses encryption and decryption to protect VPN communications from snooping.
(37) Cloud resources are pooled because many different organizations use the same physical hardware.
(35) To use software as a service (SaaS), a user has to just sign up for the service and learn how to use it.
(27) Content delivery networks (CDNs)increase a Web page's load time.
(28) Which of the following is an advantage of a content delivery network?
(41) 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?
(31) 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?
(34) A ________ is an information system that stores user data in many different geographical locations and makes that data available on demand.
(33) Service oriented architecture (SOA)is a way of designing computer programs so that they can be combined flexibly.
(40) 
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