Networking Essentials - Chapter 14

Which cloud model provides services for a specific organization or entity?

• a private cloud
• a hybrid cloud
• a community cloud
• a public cloud

Answer explanation

Private clouds are used to provide services and applications to a specific organization and may be set up within the private network of the organization or managed by an outside organization.

Which is a characteristic of a Type 1 hypervisor?​

• installed on an existing operating system
• does nto require management console software
• best suited for consumers and not for an enterprise enviroment
• installed directly on a server

Answer explanation

Type 1 hypervisors are installed directly on a server and are known as "bare metal" solutions giving direct access to hardware resources. They also require a management console and are best suited for enterprise environments.​

Which term is used to describe the process of establishing a connection between any two Bluetooth devices?

• matching
• joining
• syncing
• pairing

Answer explanation

During the pairing process, a Bluetooth device is set to discoverable mode so as to be detected by another Bluetooth device. Also, a PIN may be requested as part of the pairing process.

Which technology virtualizes the network control plane and moves it to a centralized controller?​

• Iaas
• cloud computing
• fog computing
• SDN

Answer explanation

Networking devices operate in two planes: the data plane and the control plane. The control plane maintains Layer 2 and Layer 3 forwarding mechanisms using the CPU. The data plane forwards traffic flows. SDN virtualizes the control plane and moves it to a centralized network controller.​

What would a technician require in order to install a hypervisor on a client machine?

• a server housed by a cloud service provider
• virtualization software
• an SSD
• multiple storage drives

Answer explanation

A hypervisor is used to create a virtual machine (VM). The hypervisor can be part of an operating system such as Windows Hyper-V or it can be downloaded from a virtualization vendor such as VMWare or Oracle.

A company uses a cloud-based payroll system. Which cloud computing technology is this company using?

• wireless as a service(WaaS)
• browser as a service (BaaS)
• infrasturcture as a service(IaaS)
• software as a service (SaaS)

Answer explanation

There is no such thing as BaaS. Infrastructure as a service (IaaS) is when key network devices such as routers and firewalls are leased from a provider. Wireless as a service (WaaS) is when a provider provides wireless connectivity at a fixed monthly cost.

What type of Internet connection would be best for a residence in a remote area without mobile phone coverage or wired connectivity?

• satellite
• dial-up
• DSL
• cellular

Answer explanation

Satellite Internet service provides the best option for a home user that would otherwise have no Internet connectivity at all. Cellular Internet is only available in areas with mobile phone coverage.

Which technology provides a solution for PC virtualization?

• Terminal Services
• server clustering
• RAID
• hypervisor

Answer explanation

Microsoft provides software, Virtual PC, which is a type of hypervisor that creates and manages virtual machines on a host computer.

Which statement describes a characteristic of cloud computing?

• Devices can connect to the Internet through existing electrical wiring.
• Applications can be accessed over the internet through a subscription.
• Investment in new infrastructure is required in order to access the cloud
• A business can connect directly to the Internet without the use of an ISP

Answer explanation

Cloud computing allows users to access applications, back up and store files, and perform tasks without needing additional software or servers. Cloud users access resources through subscription-based or pay-per-use services, in real time, using nothing more than a web browser.

What technology enables a cell phone to be used as a hands-free device?

• 4G
• Wi-Fi
• Bluetooth
• Yosemite

Answer explanation

Bluetooth provides a way to connect wireless devices, such as headsets, to a nearby mobile device. Wi-Fi and 4G provide WAN access to voice and data. Yosemite is the code name applied to a recent version of Apple OS X.