Wrong Answers (Dion)

Which cloud service provides a complete environment for developing and deploying custom applications?

PaaS — Platform as a Service

What three components are most important for a dedicated video-editing workstation?

A specialized video card, dual monitors, and a large fast storage drive.

What type of expansion card is commonly used for a replaceable laptop Wi-Fi adapter?

miniPCIe or M.2

Which cloud service provides cloud-hosted virtual desktops to remote employees?

DaaS — Desktop as a Service

What allows multiple private devices to share one public IP address?

NAT — Network Address Translation

On ANY question that mentions public/private IP addresses, think of NAT.

Where can you find a stop code after a Windows system crash?

The BSOD — Blue Screen of Death

What type of network combines wireless nodes that forward traffic through a mesh?

WMN — Wireless Mesh Network

A phone shuts down at 50%, charges slowly, gets hot, and only works while plugged in. What should be replaced?

The battery, after checking it for swelling or damage.

Which optical-disc format stores approximately 700 MB?

CD-R or CD-RW

Which address is public: 10.2.4.5, 172.18.2.68, 192.168.1.20, or 68.24.91.15?

68.24.91.15. Private ranges are 10.x.x.x, 172.16–31.x.x, and 192.168.x.x.

Which cloud service provides virtual machines, storage, and networking while allowing the customer to manage the OS?

IaaS — Infrastructure as a Service

Which device provides broadband internet by converting an ISP’s hybrid fiber-coaxial signal to an Ethernet signal?

Cable modem

DSL modems do the same for ISP’s twisted pair copper, converting them to Ethernet.

What device is needed for systems in two different VLANs to communicate?

A router or Layer 3 switch

Which three non-overlapping 2.4 GHz Wi-Fi channels are normally used in the United States?

Channels 1, 6, and 11

Before replacing a laptop motherboard, what two preparation steps should a technician take?

Read the service manual and document every screw and its location.

Which motherboard connectors attach to the case power button, reset button, and activity LEDs?

Front-panel connectors or front-panel headers

Which printer setting controls toner or ink density and printing speed?

Quality. Higher quality uses more ink or toner and prints more slowly.

What range advantage does 2.4 GHz Wi-Fi have over 5 GHz?

Its longer wavelength provides greater range and better penetration through solid objects.

What storage device should replace an HDD in a frequently dropped laptop?

An SSD or NVMe drive because it has no moving parts.

A home router connects through a cable modem to the internet provider. What type of network does the internet connection represent?

WAN — Wide Area Network. The devices inside the home form a LAN.

Which older laptop display type requires an inverter to power its CCFL backlight?

A traditional CCFL-backlit LCD. LED-backlit LCDs and OLED displays do not use that type of inverter.