21) Explain why cloud-based hosting does not make sense for some organizations.
22) Phobas Inc. offers an online service that stores notes made by customers on the cloud. When a customer enters notes on a device, it gets updated in all the devices he/she owns. Which of the following cloud-based offerings does Phobas Inc. provide to its customers?
A) unified communications as a service (UCaaS)
B) platform as a service (PaaS)
C) software as a service (SaaS)
D) infrastructure as a service (IaaS)
23) 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)
24) The cloud-based service that provides the hardware and allows customers to load an operating system of their choice is known as ________.
A) application virtualization
B) platform as a service (PaaS)
C) infrastructure as a service (IaaS)
D) network functions virtualization (NFV)
25) 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
26) 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.