IT Essentials v8 Chapter 3 Check Your Understanding Answers

1. Match the respective term to the definition.
IT Essentials v8 Chapter 3 Check Your Understanding Answers 9

Explanation: Place the options in the following order:

Performs a hardware check on main computer components to check if they are functioning properly. POST
A type of memory chip that stores the boot settings. CMOS
An updated system for booting computers that includes support for 64-bit systems. UEFI
A legacy system for booting computers. BIOS

2. Match the term with the respective description
IT Essentials v8 Chapter 3 Check Your Understanding Answers 10

Explanation: Place the options in the following order:

A chip designed to secure hardware by storing encryption keys, digital certificates, passwords and data. TPM
A UEFI standard that specifies the OS that is trusted by the manufacturer. Secure boot
Updating an EEPROM boot chip without opening the computer. Flashing the BIOS
A security feature that reports device information and location to a monitoring center. LoJack

3. Match the term with the respective description.
IT Essentials v8 Chapter 3 Check Your Understanding Answers 11

Explanation: Place the options in the following order:

Interference from generators and lightning. Noise
Sudden increase in voltage exceeding 100% of the normal voltage on a line. Spike
Dramatic increase in voltage above the normal flow of electrical current. Power surge
Supplies a consistent level of electrical power to a computer or other device. Uninterrupted power supply (UPS)
Provides a backup battery to supply power when the incoming voltage drops below the normal-Stand. by power supply (STP)

4. Match the term with the respective description.
IT Essentials v8 Chapter 3 Check Your Understanding Answers 12

Explanation: Place the options in the following order:

This comprises of multiple pieces of code are executed simultaneously in the CPU. Hyper-Threading
This is a high-speed connection between the CPU and the Northbridge chip. Hyper-Transport
This is a technique used to make a processor work at a faster speed than its original specification. Power surge
Supplies a consistent level of electrical power to a computer or other device. Uninterrupted power supply (UPS)
Provides a backup battery to supply power when the incoming voltage drops below the normal-Stand by power supply (STP)

5. For each scenario, select the best characteristic of RAID that is described.
IT Essentials v8 Chapter 3 Check Your Understanding Answers 13

Explanation: A user is concerned that the failure of a HDD will cause the loss of important data. This best choice is Redundancy.
– This involves having backup resources that can rapidly replace failed devices and lost data or connectivity.

A manager wants to be sure that employees can access the data that they need when they need it. The best choice is Availability.
– These are IT resources that can be accessed by those who need them at all times.

HDD data transfer rates have been identified as the cause of work delays. The best choice is Performance.
– This is the rate at which tasks can be performed. For storage devices, it is usually the read and write rates in MB/s.

A small business has recently grown and is running out of data storage space. The best choice is Capacity.
– This is the amount of data that can be stored.

A company is shopping for larger HDDs and finds them to be too expensive. The best choice is Economy.
– This is the relative cost of a solution based on its benefit. Economical things cost less than other things for the capabilities that they offer.

Corrupted data has been causing problems with applications. The best choice is Reliability.
– This is when devices function as intended for a predicable amount of time.

6. Match the raid level with the respective features.
IT Essentials v8 Chapter 3 Check Your Understanding Answers 14

Explanation: Place the options in the following order:

Stripping 0
Mirroring 1
Parity 5
Double Parity 6

7. Identify the three external connections of a computer. (Choose three.)

  • USB
  • DVI
  • network
  • SATA
  • IDE
  • drive activity LED

Explanation: USB ports provide external connections for the keyboard, mouse, and portable storage device. DVI is an external video connection from the graphics card to the screen. The Ethernet network port provides external access to a network. The internal computer connections are SATA, IDE, and the drive activity LED.

8. Match the monitor terminology with the respective description.
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Explanation: Place the options in the following order:

4:3 is older while 16:9 is newer Aspect ratio
An example is 1920 horizontal pixels by 1080 vertical pixels Screen size
More of these dots means the monitor can display more detail Pixel
4,500:1 displays brighter whites and darker blacks than 1.000:1 Contrast ratio

9. Select True or False for the statements about Safe Disposal.
IT Essentials v8 Chapter 3 Check Your Understanding Answers 16

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