IT Essentials - Safe Lab Procedures And Tool Use - Chapter 2
This will aid your revison in preparation for the IT Essentials Chapter 2 exam.
Questions and Answers
- 1.
A ......................... is a program that runs continuously to protect against unauthorised communications to and from your PC. (1 word)
Explanation
A firewall is a program that runs continuously to protect against unauthorized communications to and from your PC. It acts as a barrier between your computer and the internet, monitoring incoming and outgoing network traffic to block any suspicious or potentially harmful activity. By doing so, it helps to prevent unauthorized access to your computer and safeguards your data and privacy.Rate this question:
- 2.
This is used to test the integrity of circuits and the quality of electricity in PC components. (2 words)
Explanation
A digital multimeter is a device used to measure voltage, current, and resistance in electrical circuits. It is commonly used to test the integrity of circuits and the quality of electricity in PC components. The device provides accurate digital readings, making it a reliable tool for troubleshooting and maintenance tasks.Rate this question:
- 3.
It takes less than 20 volts of static electricyt to damage a computer component. (TRUE or FALSE)
Explanation
It actually takes less than 30 volts to damage a component.Rate this question:
- 4.
What is the correct procedure to dispose of a monitor? (pick 1)
- A.
Incineration
- B.
Dispose of it in a local land fill
- C.
Consult your local authority for correct disposal methods of hazardous material
- D.
Dispose of it in your normal rubbish bin or skip
Correct Answer
C. Consult your local authority for correct disposal methods of hazardous materialExplanation
There is over 4 lbs (1.8 kg) of lead in a CRT monitorRate this question:
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- 5.
............. ................................. software includes Fdisk, format, scandisk, defrag anf disk cleanup. (2 words)
Correct Answer
disk managementExplanation
The given correct answer, "disk management," is a software that includes tools such as Fdisk, format, scandisk, defrag, and disk cleanup. These tools are used for managing and organizing the storage devices and files on a computer's hard drive. Disk management allows users to create, delete, format, and resize partitions, as well as perform maintenance tasks like checking for errors, optimizing performance, and freeing up disk space.Rate this question:
- 6.
Antistatic wrist straps are only useful if:- (pick 1)
- A.
They are plugged into the FSK
- B.
They are clean and make good skin contact
- C.
The cord has not been damaged
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Always make sure your FSK is in full working order and fully tested before you use itRate this question:
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- 7.
Before transporting an ESD sensitive device, it must be:- (pick 1)
- A.
Thoroughly cleaned
- B.
Put into a static shielding bag or packet
- C.
Put into a cardboard box or container
- D.
Wrapped in paper
Correct Answer
B. Put into a static shielding bag or packetExplanation
When transporting an ESD sensitive device, it must be put into a static shielding bag or packet. This is because ESD (electrostatic discharge) can damage electronic components and circuits, and static shielding bags or packets are designed to prevent the buildup and discharge of static electricity. These bags or packets are made of materials that provide a barrier against electrostatic fields, protecting the device from potential damage during transportation. Thoroughly cleaning the device, putting it into a cardboard box or container, or wrapping it in paper do not provide the same level of protection against ESD.Rate this question:
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- 8.
If the humidity is too high, equipment can suffer from .................... damage (1 word)
Correct Answer
moisture
water
condensationExplanation
If the humidity is too high, it can cause moisture, water, or condensation to accumulate on equipment. This can lead to damage as the excess moisture can corrode or short-circuit electronic components, causing them to malfunction or fail. It is important to control humidity levels in order to protect equipment from this type of damage.Rate this question:
- 9.
What is the MINIMUM amount of static electricity humans can feel? (pick 1)
- A.
1,000 volts
- B.
3,000 volts
- C.
5,000 volts
- D.
7,000 volts
- E.
10,000 volts
Correct Answer
B. 3,000 voltsExplanation
At 10,000 volts you may hear a noise and feel painRate this question:
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- 10.
It is recommended to plug a printer into a UPS device. (TRUE or FALSE)
Correct Answer
False
noExplanation
The UPS device may burn out the printer motor.Rate this question:
- 11.
What is a reduced level of AC power that lasts for a period ot time when the power line voltage drops below 80% of normal levels called? (pick1)
- A.
A blackout
- B.
A spike
- C.
A brownout
- D.
A power surge
Correct Answer
C. A brownoutExplanation
A reduced level of AC power that lasts for a period of time when the power line voltage drops below 80% of normal levels is called a brownout.Rate this question:
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- 12.
What does MSDS stand for? (4 words)
Correct Answer
material safety data sheetExplanation
MSDS stands for Material Safety Data Sheet. This document provides detailed information about the potential hazards and safe handling procedures for a specific substance or product. It includes information about the composition, physical and chemical properties, health effects, first aid measures, and disposal methods. MSDS is an important tool for ensuring the safety of workers and the proper handling and storage of hazardous materials.Rate this question:
- 13.
When environmental conditions are dry and cool, what is ESD probability? (pick 1)
- A.
Low
- B.
High
Correct Answer
B. HighExplanation
In dry and cool environmental conditions, the probability of experiencing ESD (electrostatic discharge) is high. This is because low humidity and lower temperatures can increase the accumulation of static electricity, making it more likely for ESD events to occur.Rate this question:
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- 14.
This is used to prepare a hard drive to store information. (pick 1)
- A.
Fdisk
- B.
Defrag
- C.
Disk cleanup
- D.
Format
Correct Answer
D. FormatExplanation
Format is the correct answer because it is the process of preparing a hard drive to store information. When a hard drive is formatted, it is divided into sectors and tracks, and a file system is created to organize and manage the data. This allows the hard drive to be ready for storing files and data in a structured manner.Rate this question:
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- 15.
A .......... ................ is sometimes called a nut driver. (2 words)
Correct Answer
hex driver
hex screwdriverExplanation
A hex driver or hex screwdriver is sometimes called a nut driver because it is a tool used to tighten or loosen nuts and bolts with hexagonal heads. The term "hex" refers to the shape of the head, which has six sides. The driver or screwdriver is the tool used to apply torque to the nut or bolt, allowing it to be tightened or loosened. Therefore, both "hex driver" and "hex screwdriver" are correct answers for this question.Rate this question:
- 16.
When cleaning the gold contacts on computer components, what is the best substance to use? (pick 1)
- A.
A mild cleaning solution
- B.
Compressed air
- C.
A nylon brush
- D.
Isopropyl alcohol
Correct Answer
D. Isopropyl alcoholExplanation
Isopropyl alcohol is the best substance to use when cleaning the gold contacts on computer components because it is a mild and effective cleaning solution that evaporates quickly and leaves no residue. It is also safe to use on electronic components and does not cause damage or corrosion. Compressed air may remove loose debris but does not effectively clean the contacts. A nylon brush may cause scratches or static buildup.Rate this question:
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- 17.
This is used to check the integrity of files and folders on a hard drive by scanning the disk surface for physical errors. (1 word)
Correct Answer
scandisk
chkdskExplanation
Scandisk and chkdsk are both disk utility programs used to check the integrity of files and folders on a hard drive. They scan the disk surface for physical errors and can fix any issues found. Therefore, either scandisk or chkdsk can be used to perform this task.Rate this question:
- 18.
This is a dramatic increase in voltage abvove the normal flow of electical current that lasts for a few nanoseconds. (pick 1)
- A.
A blackout
- B.
A spike
- C.
A power surge
- D.
A brownout
Correct Answer
C. A power surgeExplanation
A power surge refers to a sudden and significant increase in voltage that exceeds the normal flow of electrical current. It typically lasts for a short duration, usually a few nanoseconds. This increase in voltage can cause damage to electronic devices and appliances connected to the power supply. It is important to protect sensitive equipment from power surges using surge protectors or uninterruptible power supplies (UPS).Rate this question:
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- 19.
Always wear an antistatic wrist strap if you are repairing a monitor or CRT. (TRUE or FALSE)
Correct Answer
false
noExplanation
This equipment can retain an electrical charge after being uplugged from the mains.Rate this question:
- 20.
Pencils should not be used inside a computer for any reason as the lead can act as a conductor and damage the components. (TRUE or FALSE)
Correct Answer
true
yesExplanation
Using pencils inside a computer can indeed be damaging as the lead in pencils can act as a conductor and cause harm to the computer's components. This is why it is advised not to use pencils inside a computer for any reason.Rate this question:
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