4.0 Virtualization and Cloud Computing - A+ 1101

Question 1

1. What type of cloud service offers the best security?
   A. Community
   B. Private
   C. Public
   D. Hybrid

Answer 1

1. B. Companies can purchase virtualization software to set up individual clouds within their
   own network. That type of setup is referred to as a private cloud. Running a private cloud
   pretty much eliminates many of the features that companies want from the cloud, such as
   rapid scalability, and eliminating the need to purchase and manage computer assets. The big
   advantage, though, is that it allows the company to control its own security within the cloud.
   A hybrid model would be the scenario providing benefits of both public and private clouds.
   The community model is something akin to a shared private cloud, with responsibilities and
   benefits collaboratively shared.

Question 2

2. Your manager tells you to purchase cloud-based services. Your network needs extra
   processing power and file storage. What type of service should you purchase?
   A. PaaS
   B. IaaS
   C. SaaS
   D. FWaaS

Answer 2

2. B. Let’s say that your company needs extra network capacity, including processing power,
   storage, and networking services (such as firewalls), but doesn’t have the money to buy more
   network hardware. Instead, your company can purchase infrastructure as a service (IaaS),
   which is a lot like paying for utilities; you pay for what you use. Of the four, IaaS requires the
   most network management expertise from the client side. In an IaaS setup, the client provides
   and manages the software. PaaS is platform as a service and SaaS is software as a service.
   FWaaS is sometimes used to mean firewall as a service, but is not widely recognized nor on
   the CompTIA A+ 220-1101 objectives.

Question 3

3. Your company has decided to purchase cloud services from Google. They will be getting
   infrastructure with on-demand computing services including processing power, storage and
   bandwidth over the Internet. Anyone can purchase these same services from Google, and a
   third party is responsible for maintaining and managing the hardware. What type of cloud is
   Google providing for your company?
   A. Public
   B. Private
   C. Hybrid
   D. Community

Answer 3

3. A. The traditional type of cloud that usually comes to mind is a public cloud, like the ones
   operated by third-party companies such as Microsoft, Google, HP, Apple, Netflix, and
   Amazon with its Amazon Web Services (AWS). These clouds offer the best in scalability,
   reliability, flexibility, geographical independence, and cost effectiveness. Whatever the client
   wants, the client gets. For example, if the client needs more resources, it simply scales up and
   uses more.

Question 4

4. Your company produces software and employs about 20 developers. They need to program
   apps for different operating systems. You decide to purchase cloud-based services to support
   the development team. What type of service should you purchase so that they can develop
   their programs and then test them in environments other than where they were developed?
   A. IaaS
   B. SaaS
   C. PaaS
   D. NaaS

Answer 4

4. C. Platform as a service (PaaS) adds a layer to IaaS that includes software development tools
   such as runtime environments. Because of this, it can be helpful to software developers; the
   vendor manages the various hardware platforms. This frees up the software developers to
   focus on building their application and scaling it. The best PaaS solutions allow for the client
   to export its developed programs and run them in an environment other than where they
   were developed.

Question 5

6. Which feature of cloud service allows you to instantly obtain additional storage space or
   processing power as your company needs it?
   A. Ubiquitous access
   B. Rapid elasticity
   C. Resource pooling
   D. Measured service

Answer 5

6. B. In most cases, clients can get more resources instantly (or at least quickly or on-demand),
   which is called rapid elasticity. For the client, this is a great feature because they can scale up
   without needing to purchase, install, and configure new hardware. Ubiquitous access refers
   to clients being able to access the cloud ubiquitously, or from anywhere, anytime. Resource
   pooling, particularly when a cloud provider deals with multiple tenants, refers to the provider effectively saving money by not duplicating available capacity. Finally, when the service
   provided to those tenants is monitored and paid for according to their use, it’s metered service or metered utilization.

Question 6

7. You are installing virtualization on a workstation that needs to support multiple operating
   systems. Which type of hypervisor is best suited for this environment?
   A. Type 1.
   B. Type 2.
   C. Either Type 1 or Type 2 will function in the same way.
   D. Virtual machine manager.

Answer 6

7. B. A Type 2 hypervisor sits on top of an existing operating system, called the host OS. This
   is most commonly used in client-side virtualization, where multiple OSs are managed on the
   client machine as opposed to on a server. The hypervisor is also called a virtual machine manager (VMM).

Question 6

5. Which type of cloud service provides your company with application hosting such as
   productivity applications, calendaring software, and development tools, that the employees
   can access over the Internet from wherever they are?
   A. PaaS
   B. FWaaS
   C. IaaS
   D. SaaS

Answer 6

5. D. The highest of the three levels of cloud service is software as a service (SaaS), which handles the task of managing software and its deployment. This is the model used by Google
   Docs, Microsoft Office 365, and even storage solutions such as Dropbox.

Question 7

8. You are configuring client-side virtualization on an existing Windows 10 64-bit workstation.
   You will be running a second installation of Windows 10 64-bit in the virtual environment as
   a test system. The bare minimum RAM required for each OS is 2 GB. Each Windows installation needs 20 GB of disk space. What are the absolute minimum hardware requirements for
   this workstation?
   A. 4 GB of RAM, 40 GB of disk space
   B. 2 GB of RAM, 20 GB of disk space
   C. 2 GB of RAM, 40 GB of disk space
   D. 4 GB of RAM, 20 GB of disk space

Answer 7

8. A. If presented with a scenario for installing multiple operating systems (OS) on a computer
   running client-side virtualization, just add the minimum hardware requirements (or recommendations) together. Treat it as if each OS needs its own minimum (which it does) and
   they are just sharing the available physical hardware (which they are). Also, each OS needs
   its own virtual network card to participate on the network and needs its security to be individually configured based on OS requirements and user needs. Treat it as though it is a separate computer. In reality, you’re never going to go with just the absolute minimum because
   although the OS will run, it won’t run well.

Question 8

9. You are setting up virtualization on a server that will be running four instances of Windows
   Server 2019. Four different departments will be using one instance each, and all departments
   have been promised 32 GB of RAM. Using resource pooling and using a bare-metal hypervisor, what is the minimum amount of physical RAM needed on the server?
   A. 32 GB
   B. 64 GB
   C. 128 GB
   D. 16 GB

Answer 8

9. C. If each client has been promised 32 GB of RAM, then the server must have enough RAM
   to give each client their allotment. This means 128 GB in this case. The assumption is that the
   hypervisor will require no RAM on its own. In reality, it probably will require a little but not
   much. Resource pooling, when a cloud provider deals with multiple tenants, refers to the provider having additional capacity available but saving money by sharing that availability.

Question 9

11. Your company wants to begin transferring particular services to the cloud, but the team
    cannot yet decide on the migration schedule. Management wants to pay for cloud computing
    based on usage, not a fixed flat fee. What payment model would you recommend?
    A. On-demand
    B. Resource pool
    C. Metered utilization
    D. Shared resources

Answer 9

11. C. Metered utilization is synonymous with pay-as-you-use. The resources are available, but
    payment is calculated according to the actual usage. This is a common model for enterprise
    environments, especially during the early “migration of services” period. On-demand means
    services can be added as needed on the fly. A resource pool refers to the resources owned by
    a cloud provider such as RAM and storage capacity that are available to the cloud provider’s
    clients. Shared resources refer to the idea that a cloud provider’s physical resources may be
    shared among many different companies.

Question 10

10. Your company has an application developer who creates programs for Windows, Linux, and
    macOS. What is the most cost-effective solution for them to be able to test their programs in
    multiple operating systems as quickly as possible?
    A. Buy workstations for each of the OSs they will be writing code in.
    B. Set up their workstation to dual-boot.
    C. Set up their workstation with virtual machines.
    D. Create one version of each application that will run in all three OSs.

Answer 10

10. C. The major feature of virtualization is breaking down that one-to-one hardware and software barrier. The virtualized version of a computer is appropriately called a virtual machine
    (VM). Thanks to VMs, it is becoming far less common to need dual-boot machines today
    than in the past. VMs allow computers to do things like run five instances of an OS or one
    instance each of several different OSs.

Question 11

13. Which term describes physical and virtual servers, storage, and software that are used by
    multiple clients in a cloud computing environment?
    A. Measured resources
    B. Shared resources
    C. Private cloud
    D. Community cloud

Answer 11

13. B. Shared resources describe the cloud infrastructure shared among clients of a cloud provider. For example, a cloud provider may have one physical server that is shared by multiple
    companies. Shared resources are also those resources made available to multiple employees
    or users on a local network. Measured resources are synonymous with pay-as-you-go services where the company pays only for the resources they are using. A private cloud negates
    many of the advantages of a public cloud such as rapid elasticity, but control remains with
    the owner of the cloud. A community cloud is shared by a small group of users with similar
    needs who pool their resources for a more cost-effective solution.

Question 12

12. A client complains about the occupied space, abundant power usage, and hardware costs
    of the multiple machines used in its small data center. Still, the client does not wish to lose
    control over any of the machines. What might you recommend to the client to resolve all of
    those issues?
    A. Establish clusters for high availability.
    B. Create virtual machines.
    C. Outsource to an IaaS provider.
    D. Shut down the nonessential machines.

Answer 12

12. B. The creation of virtual machines would alleviate the issue of space, power, and most of
    the hardware costs associated with maintaining bare-metal systems. Virtual machines can
    provide much of the same services, at a fraction of the costs. Control and management of the
    machines would not change.

Question 13

14. What are potential problems associated with the shared resource structure of public cloud
    computing? (Choose two.)
    A. Security and confidentiality
    B. Flexibility
    C. Poor application performance
    D. Increased hardware costs

Answer 13

14. A, C. Many companies go to cloud computing and the inevitable shared resources for the
    advantages of lowering their hardware costs and for the flexibility of adding resources on the
    fly. There are, however, some concerns with cloud computing, such as who has access to the
    data, the potential for another cloud computing client to introduce malware, and potentially
    poor application performance if another application is monopolizing the shared resources.
    Another potential problem is Internet connection downtime.

Question 14

15. Network control and security management of cloud assets is the difference between what
    two types of shared resources?
    A. Internal vs. external
    B. Private vs. public
    C. Hybrid vs. community
    D. Synchronized vs. unsynchronized

Answer 14

15. A. Internal shared resources would be under local network control and local security
    management, perhaps provided to different units within the same organization, whereas
    external assets are very likely secured and controlled by an external cloud provider.

Question 15

17. You’re setting up a virtual machine for one of your customers who needs a legacy OS to run
    software for a paper-cutting machine in an envelope factory. Windows 10 64-bit is the host
    OS. The legacy client OS requires a minimum 1 GB of RAM and the software running on it
    requires a minimum of 2 GB of RAM. What is the absolute minimum RAM needed on the
    virtual machine?
    A. 1 GB
    B. 4 GB
    C. 5 GB
    D. 10 GB

Answer 15

17. C. This configuration would need 2 GB for Windows 10 (the host) plus 3 GB for the client
    OS and running software at a minimum. In reality, more RAM would be better.

Question 15

16. A company using cloud services wishes to better prepare for surges for what it needs. What
    sort of capacity provisioning by its cloud provider should the company ask for?
    A. Rapid metering
    B. Infrastructure as a service
    C. Metered utilization
    D. Resource pooling

Answer 15

16. C. For a company needing additional cloud resources on demand, they should request
    metered utilization, in which a cloud service will bill much like a utility would, as resources
    are used. Infrastructure as a service (IaaS) refers to hardware and networking in the cloud,
    and resource pooling is used in cloud computing to mean that resources are pooled and delivered as needed to many clients. Rapid metering is not an IT term.

Question 16

18. The company’s sales manager wants to ensure that the laptop files of its traveling sales
    engineers stay consistent with the files on the company cloud. What sort of applications
    could assist with that business need?
    A. File security monitoring
    B. File virtualization
    C. File emulator
    D. File synchronization

Answer 16

18. D. Synchronization applications work to keep all files consistent, updating from multiple
    locations as needed. Emulation is when one thing acts like (emulates) something else. File
    security is ubiquitous and is needed everywhere, but it does not address the need to keep the
    files consistent, whether the users are traveling or on premises. Virtualization is using a single
    set of hardware as if it were multiple machines to run multiple OS instances or multiple
    operating systems.

Question 17

19. What service allows a user to access a virtual OS either in the cloud using a browser or client
    on their local devices or from a local virtualization server?
    A. On-demand desktop (ODD)
    B. Binary application desktop (BAD)
    C. Virtual desktop infrastructure (VDI)
    D. Desktop streaming (DTI)

Answer 17

19. C. Virtual desktop infrastructure (VDI) can be managed/hosted on either a local server (local
    cloud) or over the Internet by a third party. When in the cloud and managed by a third party,
    it is sometimes called desktop as a service (DaaS). The advantages of VDI are savings in
    hardware costs and configuration time. Data sensitivity and data security may preclude using
    VDI in the cloud.

Question 18

20. An employee travels between multiple offices, using a desktop system in each office. What
    technology would ensure that the employee’s desktop icons, files, and applications stay
    uniform across systems in all the offices?
    A. On-demand desktop
    B. VDI in the cloud
    C. Desktop emulation
    D. Synchronized folders

Answer 18

20. B. A virtual desktop infrastructure (VDI) moves the desktop icons, files, and folders to a
    server instead of the desktop originating from the local machine. When the desktop experience is hosted on a centralized server location, the icons, files, and folders are the same. With
    this user working from different offices, the best solution for them is VDI in the cloud.

Question 18

21. When running a hypervisor, what enables a guest machine to connect to a network?
    A. Cat 5 network cable
    B. Guest applications
    C. Virtual NIC
    D. Host operating system

Answer 18

21. C. In a virtual environment, a virtual network interface card (NIC) connects the guest
    machine to its local virtual network and any external networks.

Question 19

22. How can an organization permit employees who need to run an application on one mobile
    device to instead run it from multiple devices?
    A. Application virtualization
    B. Wrapping
    C. Binary application desktop
    D. On-demand desktop

Answer 19

22. A. Application virtualization delivers software using a virtual structure, which allows an
    organization to make a needed application available across multiple devices without having
    to install it on each of these devices. This might apply to any platform the organization needs,
    whether a desktop computer or a mobile device.

Question 20

23. In setting up and configuring client-side virtualization, what is necessary to consider before
    purchasing computing and storage hardware?
    A. Resource requirements
    B. Management response
    C. Resale value
    D. Physical size

Answer 20

23. A. Before purchasing hardware of a host system to support a number of virtual systems, it is
    wise to consider the resource requirements of those virtual systems. The more virtual systems
    a single hardware system supports, the more resources are needed.

Question 21

24. What must be defined when wanting to maintain confidentiality, integrity, and availability of
    the system resources, and should be a part of the decision when choosing a cloud solution?
    A. Scalability
    B. Emulation
    C. Elasticity
    D. Security requirements

Answer 21

24. D. When wanting to maintain confidentiality, integrity, and availability, security requirements
    and regulations must first be defined. A company can then consider if an Internet cloud solution would be appropriate.

Question 22

25. In setting up and configuring client-side virtualization, what is necessary to consider before
    configuring a VLAN?
    A. Network requirements
    B. Emulation demands
    C. Cloud service providers
    D. Storage capacity

Answer 22

25. A. Network requirements dictate the need for and configuration of virtual local area networks (VLANs). A VLAN is a network design feature that isolates network traffic by the
    switch port. Just like a physical machine, a virtual machine must be compatible with the network it is intended to run on

Question 23

26. When considering how efficiently a hypervisor runs, which of the following is best when it is
    minimized?
    A. Storage
    B. Emulator requirements
    C. Memory
    D. Scalability

Answer 23

26. B. Emulator requirements should be as small as possible in order to keep resources free for
    use by the host and guest operating systems. Generally speaking, more storage and RAM
    lead to greater scalability, which means you can install more virtual machines on the same
    physical box.

Question 24

27. Which of the following is not considered to be a major category of cloud computing?
    A. SaaS
    B. PaaS
    C. IaaS
    D. XaaS

Answer 24

27. D. While software as a service (SaaS), platform as a service (PaaS), and infrastructure as a
    service (IaaS) are widely considered to be the major categories of cloud computing, everything as a service (XaaS) is not.

Question 25

28. Which of the cloud computing models combines on premises infrastructure and Internet
    accessed resources?
    A. Private cloud
    B. Public cloud
    C. Hybrid cloud
    D. Combined cloud

Answer 25

28. C. A private cloud pools the on premises resources of a company for use within the
    company; there is no Internet component. A public cloud is owned by a third-party provider
    who delivers resources, including storage, platforms, and software via the Internet. A hybrid
    cloud combines the two other forms, where some resources are on premises and others are
    available over the Internet. The on premises resources may provide more control over data,
    while the Internet resources offer on-demand scalability. Different types of data could be kept
    in different locations depending on the company’s needs.

Question 26

29. With today’s more mobile workforce, what technology provides the benefits of centralized
    security, ease of configuring new desktops for remote workers, and scalability regardless of
    where a user is or works from? (Choose the best answer.)
    A. IaaS
    B. SaaS
    C. VDI in the cloud
    D. VDI on premises

Answer 26

29. C. Virtual desktop infrastructure (VDI) in the cloud, sometimes called desktop as a service
    (DaaS), allows a network admin to easily and almost immediately configure desktops for
    new users, even if they are in a remote location halfway around the world. Infrastructure as
    a service (IaaS) provides the physical computing, network, memory, and storage resources
    enabling the cloud provider’s customers to set up virtual servers and networks in the cloud.
    IaaS can also provide server software and databases, although not all providers do. Think of
    IaaS as renting the entire network structure. The cloud provider is responsible for resource
    provisioning and maintenance needed for the organization’s infrastructure. Software as a service (SaaS) provides applications but not necessarily desktops. VDI on premises offers similar
    advantages, but scalability is limited by local servers.

Question 27

30. A group of real estate agents has realized that they have similar computing resource needs.
    They’ve reached out collectively to your IT services company and asked if there is a solution
    that will let them pool their resources and save money, possibly sharing industry-specific
    software, but still have their servers and information held securely and locally. What will you
    recommend?
    A. Community cloud
    B. Public cloud
    C. Private cloud
    D. VDI in the cloud

Answer 27

30. A. A community cloud is the solution for such situations. It allows shared cloud resources
    to a limited group of people or companies. The group can benefit from economies of scale
    but keep their resources separate from other organizations. They could even share in joint
    projects. Their servers could be in a data center or stored locally by one of the members. The
    group will have more control than they would over a public cloud but could share the maintenance costs of their cloud. A community cloud is similar to a private cloud, but with multiple members.

Question 28

31. Which of these terms is a benefit of cloud computing that means the information is available
    constantly, regardless of location?
    A. Shared resources
    B. High availability
    C. Rapid elasticity
    D. File synchronization

Answer 28

31. B. While all of the items listed are advantages of using cloud-computing, high availability
    means that data and applications are available around the clock, regardless of the users’
    location. Shared resources often lead to lower costs and rapid elasticity. File synchronization
    means that users’ files are updated with the newest changes whether they’re working at home
    or in the office.

Question 29

32. A graphic artist at your company needs to manipulate files in both Linux and Windows
    environments. You, as the IT support person, want as few physical machines to support as
    possible. What technology allows both OSs to run on a single machine?
    A. File sharing.
    B. Cross-platform virtualization.
    C. Dual-boot system.
    D. It can’t be done

Answer 29

32. B. Configuring a virtual machine using VMM software whose features include crossplatform virtualization will allow you to configure multiple desktop platforms on one
    physical machine regardless of the host OS. Dual-boot systems may not work well together,
    depending on the operating systems being used. Sharing files isn’t really the question being
    addressed; using different operating systems is.

Question 30

33. You’ve received a file from a salesperson who recently separated from your company. You
    want to open this file and see what it contains without subjecting your computer to possible
    malicious content. What Windows 10 Pro feature can you turn on that will create a protected
    environment for opening this file?
    A. Shared Files
    B. System Information
    C. Sandbox
    D. File Manager

Answer 30

33. C. In general terms, a sandbox is an isolated test environment separate from your network
    where you can “play” with applications and settings without worrying about negative effects
    on your network or computers. Sandbox is also a feature that can be enabled in Windows 10
    and Windows 11 Pro and higher editions. When launched, it opens a separate instance of the
    Windows operating system running as a virtual machine on your Windows desktop. A file
    can be opened in that virtual machine to help protect your computer against malicious code.
    When the sandbox is closed, anything running in it is discarded.

Question 31

34. Your friend is a software developer. They have Windows 10 Pro installed on their SOHO
    computer. They are creating an application that needs to run smoothly on both Windows and
    Linux machines, so it will need to be tested in both of those environments. What would be
    the best solution for your friend?
    A. Windows 10 sandbox
    B. Dual-boot system
    C. Two separate machines
    D. Virtual machines on their PC

Answer 31

34. D. Your friend will need to run both OSs to test the software. A Windows 10 sandbox will
    protect their host OS from any problems the application might cause, but it won’t let them
    test the application on a Linux OS. Dual-boot systems are clunky at best, and they require
    rebooting between OSs. Running two computers would cost more in utilities and hardware,
    not to mention precious office space. The best solution for your friend is to install virtual
    machines on their office PC. This would enable them to test in either Linux or Windows
    without shutting the PC down between, saving time while making corrections. It will also
    protect their machine against unintentional bad code that could otherwise cause damage.

Question 32

35. A manufacturing client has a piece of equipment that is running on a Windows 7 OS. The
    equipment-specific software won’t run on any other OS, and the client is concerned about
    what they will do when the Windows 7 computer inevitably crashes. Cost is always a concern. What is a viable, cost-effective solution for your client?
    A. Have the programmers rewrite the code to run on Windows 10.
    B. Migrate the software to a Windows 7 VM running on a Windows 10 host.
    C. Wait until the hardware crashes, then shut the equipment down permanently.
    D. Tell the client they need to upgrade their manufacturing equipment to something more
    modern as soon as possible.

Answer 32

35. B. Developing software for a specific manufacturing function is often costly and time-consuming, so a manufacturer might want to keep that equipment and software running as long
    as possible. If the equipment is doing the job they need it to do, they will be disinclined to
    upgrade to something new. Shutting the equipment down when it fails may spell disaster
    for the company. The best option here is to prepare a Windows 10 PC to run the legacy OS
    and software within a virtual machine, and test the software. Then, during a planned shutdown, transfer the control of the manufacturing machine over to the new PC with the virtual
    machine, and, of course, make sure you have an image to rapidly deploy if the new machine
    fails in the future.

Question 33

36. Why would a company prefer to run multiple applications each on its own VM rather than
    on a single server?
    A. Security
    B. Scalability
    C. Less maintenance
    D. Less cost

Answer 33

36. A. The advantage of having applications each running in their own virtual machine is that
    if one application’s or VM’s security is penetrated, the others may still be secure. Scalability
    would still be limited to the resources of the server. The hardware maintenance would be
    the same, but the security maintenance might actually be more; however, being able to set
    up different access for each machine may simplify security configuration. The cost would
    actually be more because a separate license would be needed for each OS running in its own
    virtual machine.

Question 34

38. Which cloud model offers the greatest control over data and security?
    A. Private cloud
    B. Public cloud
    C. Hybrid cloud
    D. Community cloud

Answer 34

38. A. While each model has its advantages, if security is the greatest concern, then a private
    cloud is the best solution. Public, hybrid, and community clouds all involve other entities,
    which may introduce additional potential security problems.

Question 35

37. Which of the following would essentially be the same whether running an OS on a virtual
    server or a physical server? (Choose two.)
    A. Security configuration
    B. Hardware
    C. Licensing
    D. Portability

Answer 35

37. A, C. Regardless of whether a server is physical or virtual, it will need the same security configuration, and a license must exist for every virtual server just as it must for every physical
    server. While RAM and storage requirements would be the same, one of the advantages of
    using a virtual machine is being able to put more than one server on a single piece of computer hardware, so overall hardware cost would be less, and maintaining that hardware
    would be less expensive. Virtual servers are much more portable than physical servers,
    meaning they can easily be moved from one piece of hardware to another.

Question 36

39. You are a manager in a call center that employs 300 people who may be working any of
    three shifts on any given day, taking whichever of your 100 seats is available. Company
    regulations require that all information remain hosted locally. What technology can you use
    so that their files, folders, and desktop icons all appear the same regardless of which computer they log on to?
    A. On-demand desktop
    B. VDI in the cloud
    C. Desktop emulation
    D. VDI on premises

Answer 36

39. D. A virtual desktop infrastructure (VDI) moves the desktop icons, files, and folders to a
    server instead of the desktop originating from the local machine. When the desktop experience is hosted on a centralized server location, the icons, files, and folders are the same
    regardless of where a user logs on. VDI on premises hosts the desktop on a local server,
    whereas VDI in the cloud hosts the desktop on a remote server.

Question 37

40. Which of these is not an advantage of cloud computing?
    A. Reduced capital expenditures
    B. Frees IT employees time for other needs
    C. Complete control over data
    D. Rapid elasticity (dynamic growth)

Answer 37

40. C. Cloud computing has many advantages, including (a) reduced capital expenditures, which
    can help growing companies and (b) relieve IT personnel of infrastructure management so
    that they can focus on other objectives such as customer support, and (c) rapid elasticity,
    which means a company can grow its IT infrastructure on a moment’s notice as needed.
    Also, adding new employees can be easier with cloud computing. There are a few downsides,
    though. Some of them are that someone else has control of your data, fees can be surprising
    when usage is more than expected, and moving from one IaaS provider to another might be
    difficult. There are more advantages and disadvantages than can reasonably be listed here.