Virtual Machines
WI-FI
Cloud Computing
Network Security
Frequency and Standards
100

What is a virtual machine (VM)?

A guest operating system installed on a host computer using virtualization software.

100

What is a WLAN?

  • A type of wireless network.
100

What is a private cloud?

A cloud environment set up just for authorized users within an organization

100

What is the risk of having a WiFi network without encryption?

Unwanted people can access the network

100

The Institute of Electrical and Electronics Engineers (IEEE) established what standards for wireless communications?

  • 802.11
200

Which type of hypervisor requires an existing operating system to run?

Type 2

200

What happens to Wi-Fi signal strength as you move farther from the router?

It decreases 

200

What is an example of Software as a Service (SaaS)?

Gmail

200

What is one of the best parts of small wireless networks?

  • They make it simple to share an internet connection.
200

How is the 2.4 GHz frequency better than the 5 GHz frequency?

  • It can travel longer distances.
300

How does a Hypervisor manage the CPU for virtual machines? 

It divides the real CPU so multiple virtual machines can use it.

300

What is a pre-shared key?

  • A password used to access a wireless network
300
  • Which cloud service model allows you to use a program through your web browser over the Internet?
  • Software as a Service (SaaS)
300

What is the current standard for WiFi encryption that is considered very secure?

  • WPA3
300

How is the 5 GHz frequency better than the 2.4 GHz frequency?

  • It has less interference from other devices
400

What is container virtualization?

A lighter way to run many apps without them interfering with each other.

400

Why do most Wi-Fi routers support multiple standards?

To ensure compatibility with both old and new devices

400

What is a public cloud deployment?

A cloud environment shared among many unrelated organizations

400

What should you do to make your router more secure?

  • Change the SSID and password
400

What frequency bands are available if you are using Wi-Fi 6G or 6E? (There are 3 of them) 

2.4 GHz, 5 GHz, and 6 GHz

500

What is a guest operating system (OS)?

The OS that runs inside a virtual environment

500

What is attenuation in the context of Wi-Fi signals?

The loss of signal strength as you move away from the router.

500

Which cloud service model is best for businesses that want to save money and time by not handling physical servers themselves?

Infrastructure as a Service (IaaS)

500

Why is WEP considered insecure today?

It is easily hacked.

500

Which 802.11 standard was the first to allow more than one frequency band?

802.11n

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