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IT Essentials (Version 8.0) Chapter 3 Exam Answers
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Question 1 of 53
1. Question
1 pointsMatch the RAID technology terms to the description. (Not all options are used.)Sort elements
- parity
- striping
- mirroring
- double parity
- duplexing
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provides basic error checking and fault tolerance by storing checksums separately from data
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enables data to be distributed across multiple drives
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stores the same data on multiple drives simultaneously
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provides fault tolerance for up to two failed drives
Correct
Incorrect
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Question 2 of 53
2. Question
1 pointsWhich two considerations would be of the greatest importance when building a workstation that will run multiple virtual machines? (Choose two.)Correct
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Hint
Virtual computing requires more powerful hardware configurations because each installation needs its own resources and thus requires a lot of RAM and CPU processing power. -
Question 3 of 53
3. Question
1 pointsWhich two components are commonly replaced when a computer system with a newer motherboard is being upgraded? (Choose two.)Correct
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Hint
When a motherboard is being upgraded to a newer version, both the CPU and RAM are commonly upgraded to support the motherboard compatibility requirements. -
Question 4 of 53
4. Question
1 pointsWhat are two reasons for installing a second hard disk drive inside an existing computer? (Choose two.)Correct
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Hint
The common reasons to install a second hard disk drive in a computer include: 1) increase storage space, 2) increase hard drive speed, 3) install a second operating system, 4) store the system swap file, 5) provide fault tolerance, and 6) backup the original hard drive. -
Question 5 of 53
5. Question
1 pointsA technician has just finished assembling a new computer. When the computer is powered up for the first time, the POST discovers a problem. How does the POST indicate the error?Correct
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Question 6 of 53
6. Question
1 pointsWhat is a function of the BIOS?Correct
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Question 7 of 53
7. Question
1 pointsA technician has assembled a new computer and must now configure the BIOS. At which point must a key be pressed to start the BIOS setup program?Correct
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Hint
To enter the BIOS setup program, you must press the proper key or key sequence during POST. Many motherboards will display graphics while the computer is checking hardware and waiting for the proper key press for the user to enter the BIOS. -
Question 8 of 53
8. Question
1 pointsHow does an inline UPS protect computer equipment against electrical power brownouts and blackouts?Correct
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Hint
Uninterruptible power supplies (UPS) contain a battery which is constantly providing a consistent level of voltage to the computer. -
Question 9 of 53
9. Question
1 pointsWhich condition refers to a reduced voltage level of AC power that lasts for an extended period of time?Correct
Incorrect
Hint
Surges and spikes are increased voltage levels. A sag is a short duration reduction in line voltage while a brownout is a reduction in voltage that occurs for an extended period of time. -
Question 10 of 53
10. Question
1 pointsHow should a technician dispose of an empty inkjet printer cartridge?Correct
Incorrect
Hint
Refilling used inkjet cartridges is not recommended, as it may void the printer warranty and could leak ink, damaging the printer. Printer cartridges should be recycled, following the procedures established for recycling by the manufacturer. Because they are an environmental hazard, they should never be thrown away. -
Question 11 of 53
11. Question
1 pointsWhat makes CRT monitor disposal dangerous for a technician who is handling the disposal?Correct
Incorrect
Hint
CRT monitors do contain lead, barium, and rare earth metals that can be dangerous to the environment if not disposed of properly, but the danger to the technician is in the high voltage levels that can be stored even after powering off the monitor and disconnecting the power cord. A technician might be disposing of a CRT monitor that has the cover ajar or removed and be exposed to the high voltage. -
Question 12 of 53
12. Question
1 pointsWhich type of interface was originally developed for high-definition televisions and is also popular to use with computers to connect audio and video devices?Correct
Incorrect
Hint
High definition multimedia interface, or HDMI, was originally a television standard. However, because it has many digital features, it is also a popular interface to connect audio and video devices to computers. -
Question 13 of 53
13. Question
1 pointsWhat is indicated by the contrast ratio of a monitor?Correct
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Hint
Contrast ratio is one of many factors that is used to describe the resolution of a monitor. Contrast ratio is a measure of the difference in intensity between white and black areas of the picture. A higher contrast ratio means the monitor can produce pictures with brighter whites and darker blacks. -
Question 14 of 53
14. Question
1 pointsWhat electrical unit refers to the number of electrons moving through a circuit per second?Correct
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Hint
Current refers to the amount of electrons moving through a circuit per second and is measured in amperes or amps. -
Question 15 of 53
15. Question
1 pointsWhat characteristic of electricity is expressed in watts?Correct
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Hint
Watts is the unit used to measure the electrical power. Power refers to the work required to move electrons through a circuit multiplied by the number of electrons flowing through a circuit per second. -
Question 16 of 53
16. Question
1 pointsWhich is a BIOS security feature that can prevent data from being read from a hard drive even if the hard drive is moved to another computer?Correct
Incorrect
Hint
There are several commonly available BIOS security features. Drive encryption is used to encrypt hard drives to prevent data access. Secure boot ensures that devices will only boot a trusted operating system. BIOS passwords allow different levels of BIOS access. RAID is not a BIOS security feature but rather provides redundancy and fault tolerance by using multiple hard drives. -
Question 17 of 53
17. Question
1 pointsWhat data is stored in the CMOS memory chip?Correct
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Hint
The complementary metal-oxide semiconductor (CMOS) chip is a small memory chip located on the motherboard that is used to store saved BIOS settings. -
Question 18 of 53
18. Question
1 pointsWhat is the purpose of LoJack?Correct
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Hint
The LoJack security feature protects against data theft if a device is stolen by allowing the owner to locate, lock, or delete all files on the device. -
Question 19 of 53
19. Question
1 pointsWhat is one purpose of adjusting the clock speed within the BIOS configuration settings?Correct
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Hint
The CPU clock speed can be adjusted up or down within the BIOS configuration settings. By lowering the clock speed, a CPU can run slower and cooler. Increasing the CPU clock speed makes the computer run faster and hotter. -
Question 20 of 53
20. Question
1 pointsA user playing a game on a gaming PC with a standard EIDE 5400 RPM hard drive finds the performance unsatisfactory. Which hard drive upgrade would improve performance while providing more reliability and more energy efficiency?Correct
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Hint
Games require a lot of storage. In order for the computer to load and run games quickly, a fast hard drive will need to be installed. To obtain best performance an SSD (Solid-State Drive) will perform faster than an EIDE drive or a SATA drive. -
Question 21 of 53
21. Question
1 pointsWhich security feature in modern CPUs protects memory areas that contain part of the operating system from malware attacks?Correct
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Hint
The execute disable option can be turned on, if the feature is supported by the OS, to prevent malicious code from being executed inside a specific memory area that contains operating system files. -
Question 22 of 53
22. Question
1 pointsA user reports that every morning when a particular computer is turned on, the configuration settings on that computer have to be reset. What action should be taken to remedy this situation?Correct
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Hint
BIOS information is maintained through the use of a CMOS battery. If the CMOS battery no longer provides power, configuration settings may be lost. -
Question 23 of 53
23. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 6?Correct
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Question 24 of 53
24. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 10?Correct
Incorrect
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Question 25 of 53
25. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 10?Correct
Incorrect
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Question 26 of 53
26. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 1?Correct
Incorrect
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Question 27 of 53
27. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 5?Correct
Incorrect
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Question 28 of 53
28. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 5?Correct
Incorrect
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Question 29 of 53
29. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 6?Correct
Incorrect
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Question 30 of 53
30. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 6?Correct
Incorrect
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Question 31 of 53
31. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 10?Correct
Incorrect
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Question 32 of 53
32. Question
1 pointsA data analyst has asked a technician to help protect locally stored data by installing a RAID. What is the minimum number of drives the technician has to install if configuring a RAID level 1?Correct
Incorrect
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Question 33 of 53
33. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer needs protection if one drive fails, fast access, and drive capacity. Which RAID should the technician install?Correct
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Question 34 of 53
34. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer needs protection if two drive fails and wants as much drive capacity as possible. Which RAID should the technician install?Correct
Incorrect
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Question 35 of 53
35. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer needs protection if two drive fails and wants as much drive capacity as possible. Which RAID should the technician install?Correct
Incorrect
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Question 36 of 53
36. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer needs protection for one drive failure and only has room in the computer for two drives. Which RAID should the technician install?Correct
Incorrect
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Question 37 of 53
37. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer wants RAID and full drive capacity, but does not care about a drive failure, because all data is constantly backed up. The computer where the RAID is to be installed only has room for two drives. Which RAID should the technician install?Correct
Incorrect
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Question 38 of 53
38. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer wants data to be stored on two drives that are used to maximum capacity and does not care if a single drive fails, because data is backed up hourly. Which RAID should the technician install?Correct
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Question 39 of 53
39. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer wants data to be stored on three drives and protection for one drive failure. Which RAID should the technician install?Correct
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Question 40 of 53
40. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer wants three drives to be used and protection if one drive fails. Which RAID should the technician install?Correct
Incorrect
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Question 41 of 53
41. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer wants to incorporate mirroring and striping as part of the RAID. Which RAID should the technician install?Correct
Incorrect
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Question 42 of 53
42. Question
1 pointsA technician has been asked to configure several computers with RAID. The customer wants the best RAID possible with three drives used. Which RAID should the technician install?Correct
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Question 43 of 53
43. Question
1 pointsA technician is selecting a PC that will be used by a user as a thin client. What is a major consideration that needs to be taken into account?Correct
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Question 44 of 53
44. Question
1 pointsA technician is selecting a web server that will be used to host multiple gaming applications. What is a major consideration that needs to be taken into account?Correct
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Question 45 of 53
45. Question
1 pointsA technician is selecting a web server that will be used to host multiple gaming applications. What is a major consideration that needs to be taken into account?Correct
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Question 46 of 53
46. Question
1 pointsA technician is selecting a PC that will be used by a songwriter to mix tracks. What is a major consideration that needs to be taken into account?Correct
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Question 47 of 53
47. Question
1 pointsA technician is selecting a laptop that will be used by a teleworker for connecting to the internet while traveling anywhere. What is a major consideration that needs to be taken into account?Correct
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Question 48 of 53
48. Question
1 pointsA technician is selecting a server that will be used by a cloud provider for data storage. What is a major consideration that needs to be taken into account?Correct
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Question 49 of 53
49. Question
1 pointsA technician is selecting a server that will be used by a cloud provider to provide fault tolerance for large quantities of stored data. What is a major consideration that needs to be taken into account?Correct
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Question 50 of 53
50. Question
1 pointsA technician is selecting a server that will be used by a cloud provider to provide fault tolerance for large quantities of stored data. What is a major consideration that needs to be taken into account?Correct
Incorrect
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Question 51 of 53
51. Question
1 pointsA technician is selecting a PC that will be used by an employee who wants to share a keyboard and mouse among three devices. What is a major consideration that needs to be taken into account?Correct
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Question 52 of 53
52. Question
1 pointsA technician is selecting a PC that will be used by an employee who wants to share a keyboard and mouse among three devices. What is a major consideration that needs to be taken into account?Correct
Incorrect
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Question 53 of 53
53. Question
1 pointsWhat is the advantage of having a redundant power supply?Correct
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Hint
A redundant power supply is hot-swappable. This allows the faulty power supply to be replaced without losing power to the computer.
Thank a lot. Very help full.
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