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CCNA Safety Procedures Compliance Questions

30 questions · Safety Procedures Compliance topic · All types, answers revealed

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1
MCQhard

A technician is tasked with disposing of a server that contains multiple SAS hard drives. The company's data destruction policy mandates that drives must be rendered unreadable by any means. Which combination of methods ensures compliance?

A.Perform a full format on each drive.
B.Use a degausser on each drive and then shred them.
C.Overwrite each drive with zeros using a software tool.
D.Remove the drives and store them in a locked cabinet.
AnswerB

Degaussing erases magnetic media, and shredding physically destroys the drives, ensuring no data recovery is possible.

Why this answer

For maximum security, physical destruction (shredding) is the most reliable method. Degaussing works for HDDs but not SSDs. Combining shredding with degaussing is redundant but ensures compliance.

The correct answer involves physical destruction, as it renders the media completely unusable and data unrecoverable.

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2
MCQeasy

A technician needs to dispose of several old CRT monitors from an office. What is the proper disposal method according to environmental safety regulations?

A.Place them in the regular dumpster for bulk trash pickup.
B.Take them to a certified e-waste recycling center.
C.Smash the glass and separate the components for metal recycling.
D.Donate them to a local school for reuse.
AnswerB

Certified recyclers safely handle hazardous components and ensure compliance with environmental regulations.

Why this answer

CRT monitors contain hazardous materials such as lead, phosphor, and other heavy metals that are harmful to the environment if disposed of in landfills. Certified e-waste recycling centers follow strict environmental regulations to safely dismantle and recycle these components, preventing toxic substances from contaminating soil and groundwater.

Exam trap

CompTIA often tests the misconception that donating or reusing old equipment is always the best environmental practice, but the trap here is that the question specifically asks about proper disposal according to environmental safety regulations, which mandates certified recycling for hazardous e-waste like CRTs.

How to eliminate wrong answers

Option A is wrong because placing CRT monitors in a regular dumpster violates environmental regulations due to the hazardous materials (lead, cadmium) they contain, which can leach into landfills. Option C is wrong because smashing the glass releases toxic phosphor dust and lead into the air and environment, posing health risks and violating safety protocols. Option D is wrong while donating for reuse may seem environmentally friendly, it does not address the eventual disposal of the monitors when they fail; proper disposal still requires certified recycling to handle the hazardous components at end-of-life.

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3
MCQmedium

During a software installation, a technician receives an error that the system does not meet the minimum requirements. The technician decides to override the check by modifying the registry. What safety procedure should be followed before making registry changes?

A.Disable User Account Control (UAC).
B.Create a system restore point.
C.Run the installation as an administrator.
D.Close all other running applications.
AnswerB

A restore point allows the system to be reverted to a previous state if registry edits cause problems.

Why this answer

Creating a system restore point before modifying the registry is the correct safety procedure because it captures the current system state, including registry keys, drivers, and system files. If the registry edit causes instability or boot failure, the restore point allows the technician to revert the system to its previous working configuration without data loss. This is a standard best practice for any registry modification, as even minor errors can render the system unbootable.

Exam trap

CompTIA often tests the distinction between permission elevation (running as admin) and system protection (restore point), leading candidates to mistakenly choose 'Run as administrator' because they think it bypasses the error, when in fact the question explicitly asks for the safety procedure before making registry changes.

How to eliminate wrong answers

Option A is wrong because disabling User Account Control (UAC) reduces system security by allowing all processes to run with elevated privileges without prompting, but it does not provide a rollback mechanism for registry changes; it only removes the elevation prompt, not the risk of corruption. Option C is wrong because running the installation as an administrator only ensures the installer has sufficient permissions to write to protected areas like the registry, but it does not create a backup or restore point; if the registry edit fails, there is no way to undo it. Option D is wrong because closing other applications reduces resource conflicts and potential interference during installation, but it does not safeguard against registry corruption; it is a general best practice for stability, not a safety procedure for registry modifications.

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4
MCQhard

A technician is troubleshooting a server that repeatedly trips the circuit breaker in the data center. The server is plugged into a power strip that is also serving two other high-power devices. What is the most appropriate safety and troubleshooting step?

A.Replace the power strip with a higher-rated one and reset the breaker.
B.Move one of the other high-power devices to a different circuit and plug the server directly into a wall outlet on its own circuit.
C.Reset the breaker and use a UPS with a higher wattage rating.
D.Install a larger circuit breaker in the panel to handle the load.
AnswerB

This reduces the load on the original circuit and ensures the server has dedicated power, preventing overload.

Why this answer

The repeated tripping indicates the circuit is overloaded. The safest and most effective step is to redistribute the load by moving one high-power device to a different circuit and plugging the server directly into a dedicated wall outlet. This isolates the server's power draw and prevents overloading the shared circuit, addressing the root cause without bypassing safety limits.

Exam trap

CompTIA often tests the misconception that upgrading the power strip or breaker is a valid fix, when in fact the correct approach is to redistribute the load to separate circuits to stay within safe electrical limits.

How to eliminate wrong answers

Option A is wrong because replacing the power strip with a higher-rated one does not change the circuit's maximum current capacity (typically 15A or 20A in a data center); the breaker will still trip if the total load exceeds that limit. Option C is wrong because resetting the breaker and using a higher-wattage UPS does not solve the overload; the UPS itself draws power from the same circuit and could still cause tripping if the total load exceeds the breaker rating. Option D is wrong because installing a larger circuit breaker without verifying the wiring gauge and outlet ratings is a fire hazard; the wiring may not be rated for higher current, violating electrical code and safety standards.

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5
MCQeasy

During a printer toner replacement, a technician accidentally spills toner powder on the carpet. What is the correct procedure for cleaning up the spill?

A.Use a standard household vacuum cleaner to quickly remove the toner.
B.Wipe up the toner with a dry paper towel and dispose of it in the trash.
C.Use a toner-rated vacuum or a damp cloth to carefully collect the spill.
D.Pour water on the spill to dissolve the toner, then mop it up.
AnswerC

Toner-rated vacuums have HEPA filters to trap particles; a damp cloth prevents the powder from becoming airborne.

Why this answer

Option C is correct because toner powder is a fine, electrically charged plastic dust that can be hazardous if inhaled or if it melts into carpet fibers. Using a toner-rated vacuum with a HEPA filter safely captures the particles without dispersing them, or a damp cloth can be used to gently lift the toner without smearing it deeper into the carpet. This procedure follows manufacturer safety guidelines and prevents damage to standard vacuums, which can ignite or spread the toner.

Exam trap

CompTIA often tests the misconception that water can dissolve toner because it resembles ink, but toner is a dry plastic powder that requires specialized cleanup to avoid static ignition or permanent carpet damage.

How to eliminate wrong answers

Option A is wrong because standard household vacuum cleaners lack HEPA filtration and can cause the fine toner particles to be expelled into the air, creating an inhalation hazard; additionally, the static buildup inside the vacuum can ignite the toner dust. Option B is wrong because wiping toner with a dry paper towel will grind the particles into the carpet fibers, making removal more difficult and potentially damaging the carpet. Option D is wrong because toner is a plastic-based powder that does not dissolve in water; adding water will create a sticky, paste-like mess that is harder to clean and can stain the carpet permanently.

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6
MCQmedium

A technician is troubleshooting a PC that repeatedly shuts down. The user mentions the computer is plugged into a power strip that also has a space heater and a laser printer. What is the most likely cause of the shutdowns?

A.The computer's power supply is failing.
B.The power strip is overloaded and cannot supply stable voltage.
C.The space heater is emitting electrical interference.
D.The laser printer needs a toner replacement.
AnswerB

Excessive load on the power strip causes voltage sag or trips the breaker, leading to shutdowns.

Why this answer

The most likely cause is that the power strip is overloaded because it is simultaneously supplying power to a space heater (a high-wattage resistive load), a laser printer (which draws significant current during fuser warm-up), and the PC. This overload causes the power strip's circuit breaker to trip or the voltage to sag below the PC's power supply tolerance, resulting in repeated shutdowns. Option B is correct because the combined current draw exceeds the power strip's rated capacity, leading to unstable voltage delivery.

Exam trap

CompTIA often tests the concept that high-wattage peripherals sharing a power strip can cause voltage sags or breaker trips, leading candidates to incorrectly blame the PC's power supply (Option A) or assume electrical interference (Option C) rather than recognizing the simple overload condition.

How to eliminate wrong answers

Option A is wrong because a failing power supply typically causes random shutdowns or failure to power on, but the user's description of a shared power strip with high-draw devices points to an external power issue, not an internal component failure. Option C is wrong because electrical interference from a space heater would cause data corruption or erratic behavior, not systematic shutdowns; space heaters are resistive loads that do not generate significant EMI that would trip a PC's overcurrent protection. Option D is wrong because a laser printer needing a toner replacement would produce faded prints or a 'toner low' warning, but it has no effect on the PC's power stability or shutdown behavior.

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7
MCQhard

A technician is troubleshooting a network switch that has stopped working. Upon arrival, the technician notices a strong smell of burnt plastic and sees that the power cable is melted near the connector. What is the most appropriate safety action?

A.Unplug the power cable from the switch.
B.Turn off the circuit breaker supplying the outlet.
C.Replace the power cable with a new one.
D.Spray the cable with a Class C fire extinguisher.
AnswerB

This safely disconnects power without the technician touching the damaged cable.

Why this answer

The strong smell of burnt plastic and melted power cable indicate an electrical fault that could cause a fire or electric shock. Turning off the circuit breaker (Option B) is the most appropriate safety action because it disconnects power at the source, eliminating the risk of arcing or electrocution before any physical contact is made with the damaged equipment.

Exam trap

CompTIA often tests the misconception that unplugging the cable (Option A) is the fastest safe action, but the trap is that touching a melted or damaged connector while the circuit is live can cause electrocution or arc flash, making breaker isolation the correct first step.

How to eliminate wrong answers

Option A is wrong because unplugging the cable from the switch could expose the technician to arcing, electric shock, or burns if the connector is already damaged or shorted. Option C is wrong because replacing the cable without first de-energizing the circuit could cause a short circuit or fire if the outlet or switch power supply is still live. Option D is wrong because a Class C fire extinguisher is designed for electrical fires, but spraying a melted cable that is still energized may not address the underlying electrical hazard and could delay proper de-energization.

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8
MCQmedium

A technician is tasked with installing a new hard drive in a server rack. The rack is located in a cramped, dusty storage room with poor lighting. Which safety practice should the technician prioritize before beginning the installation?

A.Use a step stool to reach the server rack safely.
B.Wear a dust mask and use a flashlight to improve visibility.
C.Remove the server from the rack and place it on the floor for easier access.
D.Disconnect all power cables in the rack to eliminate electrical hazards.
AnswerB

A dust mask protects against respiratory irritation, and a flashlight ensures the technician can see clearly to avoid mistakes.

Why this answer

The correct answer is B because the scenario describes a cramped, dusty storage room with poor lighting, which creates two immediate hazards: inhalation of dust particles and reduced visibility. Wearing a dust mask protects the technician's respiratory system from airborne particulates, while using a flashlight ensures they can see clearly to avoid accidental contact with components or cables. These measures directly address the environmental risks before any work begins.

Exam trap

CompTIA often tests the candidate's ability to prioritize environmental and personal safety over convenience or overkill measures, and the trap here is that test-takers may choose Option D (disconnecting all power) thinking it is the safest approach, but it is excessive and not the most immediate priority given the specific conditions described.

How to eliminate wrong answers

Option A is wrong because using a step stool does not address the primary hazards of dust inhalation and poor visibility; it only helps with height, which is not the main concern in a cramped space. Option C is wrong because removing the server from the rack and placing it on the floor increases the risk of physical damage to the server and creates a tripping hazard, and it does not mitigate the dust or lighting issues. Option D is wrong because disconnecting all power cables in the rack is an extreme and unnecessary step that could disrupt other critical systems; the technician should only isolate the specific device they are working on, following proper lockout/tagout procedures.

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9
MCQeasy

A user reports that their laser printer is producing faint, streaky prints and has a strong ozone smell. The printer has been in use for three years. What is the most important safety procedure to follow before attempting to service the printer?

A.Replace the toner cartridge immediately.
B.Unplug the printer and discharge the high-voltage power supply.
C.Clean the corona wire with isopropyl alcohol.
D.Reset the printer to factory defaults.
AnswerB

This is the correct safety procedure. Laser printers have capacitors that hold a charge; discharging them prevents electric shock.

Why this answer

The strong ozone smell indicates a high-voltage issue, likely with the corona wire or power supply. Before servicing, you must unplug the printer and discharge the high-voltage power supply to prevent electric shock, as laser printers store lethal voltages in capacitors even when powered off.

Exam trap

CompTIA often tests the distinction between troubleshooting steps and mandatory safety procedures, trapping candidates who confuse cleaning or replacing parts with the prerequisite of power isolation and discharge.

How to eliminate wrong answers

Option A is wrong because replacing the toner cartridge does not address the safety hazard of high-voltage discharge and is a troubleshooting step, not a safety procedure. Option C is wrong because cleaning the corona wire with isopropyl alcohol is a maintenance task that should only be performed after power is disconnected and high voltage is discharged; doing it first risks electric shock. Option D is wrong because resetting to factory defaults is a software configuration step that does not eliminate the risk of high-voltage shock and does not resolve the physical safety concern.

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10
MCQeasy

A technician is installing a new power supply in a desktop computer. After unplugging the system, what should the technician do before touching any internal components?

A.Wear a grounding strap and immediately open the case.
B.Press and hold the power button for 10 seconds to drain residual charge, then wear an ESD strap.
C.Spray the interior with compressed air to remove dust before touching anything.
D.Remove the CMOS battery first to ensure no power remains.
AnswerB

This discharges the capacitors and reduces shock risk; the ESD strap then prevents static damage.

Why this answer

Option B is correct because pressing and holding the power button for 10 seconds after unplugging the system discharges the remaining charge in the power supply capacitors and other components, reducing the risk of electric shock or damage. Wearing an ESD strap then provides a path to ground for static electricity, protecting sensitive internal components from electrostatic discharge.

Exam trap

CompTIA often tests the misconception that simply unplugging the system makes it safe to work inside, or that removing the CMOS battery is the correct way to eliminate all power, when in fact the primary danger is the residual charge in the power supply capacitors.

How to eliminate wrong answers

Option A is wrong because immediately opening the case and wearing a grounding strap without first draining residual charge from capacitors can expose the technician to a shock hazard; the power supply can hold a dangerous charge for minutes after being unplugged. Option C is wrong because spraying compressed air into the interior before discharging residual power can blow dust into sensitive areas and does not address the immediate safety step of draining stored energy. Option D is wrong because removing the CMOS battery does not discharge the main power supply capacitors; the CMOS battery only powers the real-time clock and BIOS settings, and its removal does not eliminate the high-voltage charge in the PSU.

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11
MCQmedium

A technician is replacing a damaged power supply in a desktop PC. After removing the old unit, the technician notices a large capacitor on the motherboard is bulging. What should the technician do to safely handle this situation?

A.Proceed with installing the new power supply and ignore the bulging capacitor.
B.Use a screwdriver to short the capacitor leads to discharge it.
C.Wear insulated gloves and carefully remove the motherboard for replacement.
D.Apply electrical tape over the bulging capacitor to contain it.
AnswerC

Insulated gloves protect against shock, and replacing the motherboard removes the hazard entirely, which is the safest approach.

Why this answer

A bulging capacitor indicates a failed or failing component that can leak electrolyte, cause further damage, or even burst. The safest course is to wear insulated gloves to avoid electric shock or chemical exposure and replace the entire motherboard, as the capacitor cannot be safely repaired in the field. Ignoring it or attempting makeshift fixes risks short circuits, fire, or injury.

Exam trap

The trap here is that candidates may think a bulging capacitor is harmless or can be safely discharged with a screwdriver, but the exam tests the correct safety protocol of replacing the damaged component with proper personal protective equipment.

How to eliminate wrong answers

Option A is wrong because ignoring a bulging capacitor can lead to electrolyte leakage, short circuits, or catastrophic failure that may damage the new power supply or other components. Option B is wrong because shorting capacitor leads with a screwdriver can cause a dangerous spark, electric shock, or damage to the motherboard traces; capacitors should be discharged through a proper resistor or allowed to self-discharge. Option D is wrong because applying electrical tape does not address the internal failure, and the capacitor may still leak, burst, or cause a short circuit under load.

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12
MCQeasy

During a network upgrade, a technician needs to dispose of several old CRT monitors. Which disposal method complies with environmental regulations?

A.Place them in the regular dumpster for pickup.
B.Sell them to a scrap metal dealer.
C.Take them to an e-waste recycling center.
D.Remove the glass and dispose of the plastic casing separately.
AnswerC

E-waste recycling centers are equipped to safely handle and recycle hazardous components in CRTs.

Why this answer

CRT monitors contain hazardous materials like lead, phosphorus, and other heavy metals that require specialized handling. Taking them to an e-waste recycling center ensures compliance with environmental regulations such as the Resource Conservation and Recovery Act (RCRA) and local e-waste laws, as these facilities are equipped to safely dismantle and recycle the toxic components.

Exam trap

CompTIA often tests the misconception that 'recycling' or 'selling to scrap' is always acceptable, but the trap here is that only certified e-waste recycling centers are legally authorized to handle CRT monitors due to their hazardous material content, while scrap dealers and general recycling are not compliant.

How to eliminate wrong answers

Option A is wrong because placing CRT monitors in a regular dumpster violates environmental regulations due to the leaded glass and other hazardous substances, which can leach into landfills and contaminate soil and groundwater. Option B is wrong because selling CRT monitors to a scrap metal dealer is not compliant unless the dealer is a certified e-waste recycler; general scrap dealers often lack the permits and processes to handle the toxic components safely, and the monitors may contain non-metallic hazardous materials. Option D is wrong because removing the glass and disposing of the plastic casing separately does not address the hazardous nature of the leaded glass, which still requires proper e-waste recycling; moreover, this practice is typically illegal without proper certification and equipment to prevent environmental release.

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13
MCQmedium

A technician is cleaning the inside of a desktop computer that has accumulated a large amount of dust. What is the safest method to remove the dust?

A.Use a standard household vacuum cleaner with a brush attachment.
B.Use compressed air to blow the dust out of the case.
C.Use a damp cloth to wipe down the components.
D.Use a soft brush to sweep the dust out.
AnswerB

Compressed air is the recommended method. It effectively removes dust without generating static or causing physical damage to components.

Why this answer

Compressed air is the safest method because it dislodges dust without physical contact, avoiding electrostatic discharge (ESD) or mechanical damage to sensitive components. Unlike other methods, it does not introduce moisture or static buildup, and it can reach tight spaces between heatsinks and circuit boards.

Exam trap

The trap here is that candidates assume a vacuum cleaner is safe because it 'sucks' dust away, but Cisco tests the understanding that vacuum cleaners generate dangerous static charges and lack the precision needed for delicate electronics.

How to eliminate wrong answers

Option A is wrong because household vacuum cleaners generate static electricity and can create ESD that damages sensitive electronics; they also lack sufficient filtration to prevent recirculation of fine dust. Option C is wrong because a damp cloth introduces moisture, which can cause short circuits, corrosion, or oxidation on exposed contacts and PCB traces. Option D is wrong because a soft brush can generate static charge through friction and may dislodge components or bend delicate pins if not used with extreme care.

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14
MCQmedium

A technician is setting up a new workstation in a cubicle. The cubicle has multiple power strips daisy-chained together to provide enough outlets. What is the correct safety action the technician should take?

A.Continue using the daisy-chained setup since it is convenient and all strips are rated for 15 amps.
B.Remove the daisy chain and plug each device directly into a wall outlet using a single power strip with surge protection.
C.Replace all power strips with heavy-duty extension cords rated for the total load.
D.Install a UPS at the end of the daisy chain to regulate power.
AnswerB

This reduces the risk of overload and ensures each strip is properly protected by a circuit breaker.

Why this answer

Daisy-chaining power strips is a fire hazard because it can exceed the ampacity of the circuit, leading to overheating and potential electrical fires. The correct safety action is to remove the daisy chain and plug each device directly into a wall outlet, using a single power strip with surge protection to safely distribute power without overloading the circuit.

Exam trap

CompTIA often tests the misconception that using multiple high-rated power strips in series is safe as long as each strip's rating is not exceeded, ignoring the cumulative load on the upstream circuit and the fire risk from daisy-chaining.

How to eliminate wrong answers

Option A is wrong because daisy-chaining power strips, even if each is rated for 15 amps, can still overload the wall outlet circuit (typically 15 or 20 amps) and violates OSHA and NEC safety standards. Option C is wrong because heavy-duty extension cords are not designed for permanent use and can still cause voltage drop or overheating if the total load exceeds the cord's rating; they also lack surge protection. Option D is wrong because installing a UPS at the end of a daisy chain does not address the root hazard of overloading the circuit; it only adds battery backup and surge protection, but the daisy chain itself remains a fire risk.

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15
MCQmedium

A technician is replacing a power supply in a desktop computer. After unplugging the unit, what additional step should be taken to ensure personal safety before touching internal components?

A.Wear an anti-static wrist strap.
B.Press and hold the power button for 10 seconds.
C.Remove the CMOS battery.
D.Unplug all peripheral cables.
AnswerB

This discharges residual power stored in the capacitors, making it safe to work inside the case.

Why this answer

After unplugging the power supply, pressing and holding the power button for 10 seconds discharges residual electrical charge stored in the system's capacitors (especially in the power supply and motherboard). This step, often called a 'parasitic drain,' ensures that no stored voltage remains that could cause an electric shock or damage components when touched. It is a standard safety practice before working inside a desktop computer.

Exam trap

CompTIA often tests the distinction between ESD protection (anti-static wrist strap) and electrical safety (discharging capacitors), causing candidates to mistakenly choose the wrist strap as the primary safety step after unplugging.

How to eliminate wrong answers

Option A is wrong because an anti-static wrist strap protects against electrostatic discharge (ESD) damage to components, not against electric shock from stored charge; it does not discharge the power supply's capacitors. Option C is wrong because removing the CMOS battery clears BIOS settings and may help drain some motherboard capacitors, but it does not discharge the main power supply capacitors, which hold the highest risk of shock. Option D is wrong because unplugging peripheral cables reduces cable clutter but does not discharge the internal capacitors that pose a shock hazard.

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16
MCQmedium

A small office has a UPS that emits a loud beeping sound and a burning smell. The technician suspects the battery is overheating. What is the correct immediate action?

A.Replace the battery while the UPS is still plugged in.
B.Unplug the UPS and move it to an open, well-ventilated area.
C.Reset the UPS by pressing the power button.
D.Spray the UPS with a fire extinguisher.
AnswerB

This removes the power source and reduces the risk of fire or fume inhalation.

Why this answer

The correct immediate action is to unplug the UPS and move it to an open, well-ventilated area. A burning smell combined with loud beeping indicates a critical thermal runaway condition in the battery, which can lead to fire or explosion. Disconnecting the UPS from mains power stops the charging current that is likely exacerbating the overheating, and moving it to a ventilated area reduces the risk of toxic gas accumulation and fire spread.

Exam trap

CompTIA often tests the misconception that resetting the UPS or replacing the battery while powered on is a safe troubleshooting step, when in fact the immediate priority is to isolate the hazard by disconnecting power and ventilating the area.

How to eliminate wrong answers

Option A is wrong because replacing a battery while the UPS is still plugged in exposes the technician to high DC voltage (typically 12V–48V) and the risk of short circuits or electric shock, and the continued charging current could accelerate thermal runaway. Option C is wrong because resetting the UPS by pressing the power button does not address the underlying overheating battery; it may briefly silence the alarm but will not stop the chemical reaction causing the burning smell, and could even restart charging. Option D is wrong because spraying a UPS with a fire extinguisher, especially a CO2 or dry chemical type, can damage sensitive electronics, create a conductive residue, and is not the correct first response; the priority is to disconnect power and ventilate, not to apply an extinguisher to a device that is not yet on fire.

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17
MCQeasy

A customer reports that their computer shuts down unexpectedly after a few minutes of use. The system feels hot to the touch, and the fan is running loudly. What is the most appropriate first step for a technician to take to ensure safety while diagnosing the issue?

A.Immediately open the case and touch the CPU heatsink to check temperature.
B.Unplug the computer, let it cool for 30 minutes, then inspect for dust or fan failure.
C.Spray compressed air into the vents while the system is running to clear dust.
D.Replace the power supply unit immediately to fix the overheating.
AnswerB

Unplugging ensures no power is supplied, and letting it cool prevents burns; inspection can then be done safely.

Why this answer

This question tests knowledge of electrical safety and proper handling of overheated equipment. The correct answer is to unplug the computer to prevent electrical shock or fire, then allow it to cool before inspecting internal components. Attempting to open a hot system or ignoring the heat can lead to injury or further damage.

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18
MCQhard

A technician is called to a warehouse where a forklift accidentally struck a rack containing several desktop PCs. The rack is leaning, and one PC has fallen and is sparking. What is the technician's first priority for safety?

A.Quickly unplug the sparking PC to prevent a fire.
B.Evacuate the area and report the incident to the safety officer or call 911.
C.Use a fire extinguisher on the sparking PC to prevent ignition.
D.Stabilize the rack with a nearby pallet to prevent further collapse.
AnswerB

Safety of personnel is paramount; the technician should not enter a hazardous zone. Professional responders will secure the area.

Why this answer

The immediate priority when a PC is sparking and a rack is unstable is life safety. Evacuating the area and reporting the incident (to a safety officer or by calling 911) ensures no one is exposed to potential electrical fire, arc flash, or structural collapse. Attempting to unplug or extinguish the sparking PC while the rack is leaning could result in electrocution, burns, or being struck by falling equipment.

Exam trap

CompTIA often tests the principle that life safety (evacuation and reporting) always takes precedence over equipment preservation or firefighting, tempting candidates to choose a hands-on action like unplugging or extinguishing the sparking PC.

How to eliminate wrong answers

Option A is wrong because attempting to unplug a sparking PC while the rack is unstable puts the technician at risk of electric shock or arc flash, and the spark may indicate a live short that could ignite flammable materials. Option C is wrong because using a fire extinguisher on a sparking PC before evacuating and assessing the situation wastes critical time and may not address the underlying electrical hazard; the spark could be from a capacitor or power supply that could reignite. Option D is wrong because stabilizing the rack with a pallet is a secondary action that should only be performed after the area is safe and the immediate electrical hazard is controlled; it does not address the sparking PC or the risk of fire.

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19
MCQeasy

A customer reports that their computer is emitting a loud, continuous beep and the monitor shows no display. The technician suspects a hardware issue. What is the most important safety step to take before opening the case?

A.Put on anti-static wrist strap and grounding mat.
B.Unplug the power cord from the wall outlet.
C.Press the power button to discharge residual power.
D.Wear safety goggles to protect eyes from debris.
AnswerB

This is the correct first step to prevent electric shock. It ensures no power is flowing to the components.

Why this answer

The most important safety step before opening a computer case is to unplug the power cord from the wall outlet. This ensures complete disconnection from the AC mains, eliminating the risk of electric shock from exposed internal components, such as the power supply unit (PSU) capacitors, which can hold a dangerous charge even when the system is off. While other steps like wearing an anti-static wrist strap are good practices, they do not address the primary hazard of lethal voltage.

Exam trap

The trap here is that candidates often confuse ESD prevention (anti-static wrist strap) with electrical safety, or they think pressing the power button is a substitute for unplugging the power cord, when in fact the power button discharge step is only safe after the cord is removed.

How to eliminate wrong answers

Option A is wrong because, while an anti-static wrist strap and grounding mat protect against electrostatic discharge (ESD) damage to sensitive components, they do not prevent electric shock from the power supply; the technician could still be electrocuted if the system is plugged in. Option C is wrong because pressing the power button to discharge residual power is a step performed after unplugging the power cord to drain the capacitors, but it is not a safety step that removes the primary AC power hazard; attempting this while the cord is still plugged in can cause arcing or shock. Option D is wrong because safety goggles protect against physical debris like dust or loose screws, but they do not address the immediate electrical safety risk of opening a live system.

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20
MCQmedium

A technician is replacing the thermal paste on a CPU. After cleaning the old paste, the technician accidentally touches the CPU contacts with bare fingers. What is the primary concern?

A.The CPU may be damaged by electrostatic discharge (ESD).
B.The CPU may overheat due to improper thermal paste application.
C.The CPU contacts may become contaminated with oils from the skin.
D.The CPU may be physically damaged by the pressure of the touch.
AnswerC

This is correct. Skin oils can cause poor contact and corrosion, leading to system instability or failure.

Why this answer

Touching the CPU contacts with bare fingers transfers natural oils and contaminants from the skin onto the gold-plated contact pads. These oils can cause corrosion over time or create an insulating layer that impedes proper electrical connectivity, leading to intermittent failures or permanent damage. The primary concern is contamination, not ESD, overheating, or physical pressure.

Exam trap

CompTIA often tests the distinction between immediate ESD damage and long-term contamination risks, trapping candidates who assume any physical contact with components must be an ESD concern rather than recognizing the specific hazard of skin oils on electrical contacts.

How to eliminate wrong answers

Option A is wrong because while ESD is a general risk when handling components, the question specifies that the technician touched the contacts after cleaning, and the primary concern from skin contact is oil contamination, not ESD (which is mitigated by grounding). Option B is wrong because improper thermal paste application affects heat transfer from the IHS to the cooler, not the CPU contacts; touching contacts does not directly cause overheating. Option D is wrong because the pressure from a light touch is negligible and far below the force required to physically damage the CPU contacts or substrate.

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21
MCQeasy

A technician is tasked with disposing of several old CRT monitors from a client's office. What is the correct disposal method for these monitors?

A.Place them in the regular office trash for pickup.
B.Sell them to a scrap metal dealer.
C.Take them to a certified e-waste recycling facility.
D.Disassemble them and recycle the plastic and metal separately.
AnswerC

This is the correct method. Certified facilities follow regulations to safely handle and recycle hazardous materials from CRT monitors.

Why this answer

CRT monitors contain hazardous materials such as lead, phosphor, and other heavy metals that pose environmental and health risks. Certified e-waste recycling facilities are equipped to safely dismantle and process these components in compliance with environmental regulations like the EPA's Resource Conservation and Recovery Act (RCRA). Option C is the correct disposal method because it ensures legal and environmentally responsible handling of e-waste.

Exam trap

CompTIA often tests the misconception that disassembling e-waste for recycling is acceptable for a technician, but the trap is that without proper training and equipment, disassembly of CRTs is dangerous and non-compliant with safety procedures.

How to eliminate wrong answers

Option A is wrong because placing CRT monitors in regular office trash violates hazardous waste disposal laws and can lead to environmental contamination from lead and other toxins. Option B is wrong because scrap metal dealers typically lack the certification and equipment to safely handle hazardous CRT components, and selling them may result in illegal export or improper disposal. Option D is wrong because disassembling CRT monitors without proper training and equipment can expose the technician to high-voltage capacitors, implosion risks, and toxic dust, and it is not a recommended or compliant disposal method for individuals without specialized certification.

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22
MCQhard

A company's security policy requires that all laptops returned by employees be sanitized before redeployment. A technician uses a degausser on a laptop's SSD. What is the likely outcome?

A.The SSD is completely erased and ready for reuse.
B.The SSD is physically destroyed and unusable.
C.The SSD is unaffected and still contains data.
D.The laptop's BIOS is reset.
AnswerB

Degaussing can damage the SSD's controller and make the drive inoperable, but it does not guarantee data erasure.

Why this answer

A degausser generates a powerful magnetic field to erase data from magnetic media. SSDs (Solid State Drives) store data in NAND flash memory cells, which are not magnetic. The intense magnetic field from a degausser induces high currents in the SSD's internal circuitry, physically destroying the controller and memory chips, rendering the drive completely unusable.

Exam trap

The trap here is that candidates assume degaussing works on all storage devices, but Cisco tests the distinction between magnetic media (HDDs) and solid-state media (SSDs), where degaussing physically destroys SSDs rather than erasing them.

How to eliminate wrong answers

Option A is wrong because degaussing an SSD does not perform a logical erase; it physically destroys the drive's electronics, making it impossible to reuse. Option C is wrong because the degausser's magnetic field induces destructive currents in the SSD's non-magnetic NAND flash, physically damaging the components and making data retrieval impossible. Option D is wrong because degaussing targets the storage drive, not the motherboard or BIOS chip; the BIOS remains unaffected unless the degausser is strong enough to damage other nearby components, but the primary outcome is SSD destruction.

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23
MCQmedium

A technician is troubleshooting a laser printer that is producing smudged prints. The technician needs to remove the toner cartridge to inspect the drum. What safety precaution should be taken?

A.Wear a respirator mask to avoid inhaling toner particles.
B.Discharge the high-voltage power supply before touching the drum.
C.Avoid touching the drum surface and handle the cartridge carefully to prevent toner spills.
D.Use a vacuum cleaner to clean any spilled toner immediately.
AnswerC

This is correct. The drum is sensitive to light and scratches, and toner spills can cause health issues. Careful handling is essential.

Why this answer

Option C is correct because the primary safety precaution when handling a toner cartridge is to avoid touching the drum surface, which is sensitive to light, oils, and scratches, and to handle the cartridge carefully to prevent toner spills. Toner is a fine powder that can be messy and difficult to clean, but it is not a respiratory hazard under normal handling conditions, so a respirator is not required. The high-voltage power supply in a laser printer is typically discharged automatically when the printer is unplugged, and using a vacuum cleaner for toner spills is dangerous because toner can be electrostatically charged and may cause a fire or explosion in a standard vacuum.

Exam trap

CompTIA often tests the misconception that toner is toxic and requires a respirator, or that high-voltage components need manual discharge, when in fact the immediate risk is physical damage to the drum and the electrostatic fire hazard from improper cleanup.

How to eliminate wrong answers

Option A is wrong because toner particles are not a respiratory hazard under normal handling conditions; a respirator mask is unnecessary and not a standard safety precaution for toner cartridge removal. Option B is wrong because the high-voltage power supply in a laser printer is designed to discharge automatically when the printer is unplugged and the power is removed; there is no need to manually discharge it before touching the drum, and doing so could be dangerous. Option D is wrong because using a standard vacuum cleaner to clean toner spills is a fire and explosion hazard due to the electrostatic charge of toner particles; only a toner-rated or anti-static vacuum should be used.

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24
MCQmedium

During a network upgrade, a technician needs to run new Ethernet cables through a drop ceiling. What is the most important safety precaution to take?

A.Wear a hard hat to protect against head injuries.
B.Use a non-contact voltage tester to check for live wires.
C.Ensure the area is well-ventilated.
D.Wear anti-static gloves to prevent ESD.
AnswerB

This is the most important precaution. Before running cables, the technician should verify that no live electrical wires are in the path to avoid electrocution.

Why this answer

The most important safety precaution when running cables through a drop ceiling is to use a non-contact voltage tester to check for live wires. Drop ceilings often conceal electrical wiring, and accidentally cutting or damaging a live wire can cause electrocution, fire, or equipment damage. A non-contact voltage tester allows the technician to detect the presence of AC voltage without making physical contact, ensuring the area is safe before handling cables.

Exam trap

CompTIA often tests the distinction between general safety equipment (like hard hats) and task-specific electrical safety tools, so the trap here is that candidates may choose a hard hat as a 'common sense' safety item, overlooking the more critical step of verifying that no live electrical wires are present in the drop ceiling.

How to eliminate wrong answers

Option A is wrong because while a hard hat provides head protection against accidental bumps or falling objects, it is not the most critical precaution when working near electrical hazards in a drop ceiling; the primary risk is electrical shock, not head injury. Option C is wrong because ventilation is not a primary concern when running Ethernet cables through a drop ceiling; the main hazards are electrical and physical, not airborne contaminants or lack of oxygen. Option D is wrong because anti-static gloves are used to prevent electrostatic discharge (ESD) damage to sensitive electronic components, but they do not protect against the immediate life-threatening risk of contact with live electrical wires in a drop ceiling environment.

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25
MCQhard

A technician is tasked with decommissioning a server that contains a RAID array of hard drives. The drives are still functional, but the data must be securely erased. What is the most secure method to ensure data cannot be recovered?

A.Perform a quick format of each drive.
B.Overwrite the drives with zeros using a low-level format.
C.Use a degausser to erase the magnetic data on the drives.
D.Physically destroy the drives with a hammer.
AnswerC

Degaussing destroys the magnetic domains, making data unrecoverable. It is the most secure method for magnetic drives.

Why this answer

Degaussing destroys the magnetic field on the platters, making data unrecoverable. Physical destruction is also secure, but degaussing is the most efficient for bulk drives. Simply reformatting or overwriting may leave recoverable data.

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26
MCQeasy

A technician is installing a new power supply in a desktop computer. After connecting all cables, the computer will not power on. What is the most likely safety-related oversight?

A.The power supply is not compatible with the motherboard.
B.The power cord is not securely plugged into the power supply.
C.The voltage selector switch on the power supply is set to the wrong voltage.
D.The power supply fan is blocked by debris.
AnswerC

This is correct. The voltage selector switch must match the outlet voltage. An incorrect setting can prevent power-up and damage the power supply.

Why this answer

The voltage selector switch on the power supply must match the local mains voltage (typically 115V in North America or 230V in Europe). If set to 230V while plugged into a 115V outlet, the power supply will receive insufficient voltage to start, causing the computer to appear completely dead. This is a common safety-related oversight because the switch is often overlooked during installation.

Exam trap

CompTIA often tests the voltage selector switch as a safety-related oversight because candidates mistakenly focus on physical connection issues (like a loose power cord) or component compatibility, overlooking the critical step of matching the power supply to the local mains voltage.

How to eliminate wrong answers

Option A is wrong because power supply compatibility with the motherboard is determined by the form factor (e.g., ATX) and connector types, not by the ability to power on; an incompatible power supply would still typically power on but might not fit or provide correct voltages. Option B is wrong because if the power cord were not securely plugged in, the computer would not power on, but this is a physical connection issue, not a safety-related oversight—the question specifically asks for a safety-related oversight. Option D is wrong because a blocked fan would cause overheating after the system is powered on, not prevent the computer from powering on entirely; the power supply would still start and spin the fan briefly before thermal protection might kick in.

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27
MCQmedium

A technician needs to install a new hard drive in a computer that is under a strict security policy requiring all drives to be sanitized before disposal. The old drive will be replaced. What is the most secure method to ensure data cannot be recovered from the old drive?

A.Perform a quick format of the drive.
B.Use a degausser to erase the magnetic fields.
C.Run the Windows Disk Cleanup tool.
D.Delete all partitions using Disk Management.
AnswerB

Degaussing destroys the magnetic structure of the platters, making data unrecoverable. This meets strict security requirements.

Why this answer

A degausser generates a powerful magnetic field that physically randomizes the magnetic domains on the platters, effectively destroying all stored data and rendering the drive unusable. This is the only method listed that meets the strict security policy requirement for sanitization, as it prevents any possible data recovery even with advanced forensic tools.

Exam trap

CompTIA often tests the misconception that a quick format or partition deletion is sufficient for data sanitization, when in reality these methods only remove pointers to the data, leaving the raw data recoverable with simple tools.

How to eliminate wrong answers

Option A is wrong because a quick format only rewrites the file system metadata (e.g., the MFT or FAT) and does not erase the actual data on the disk; data remains recoverable with tools like TestDisk or PhotoRec. Option C is wrong because the Windows Disk Cleanup tool only removes temporary files and empties the Recycle Bin; it does not touch user data or system files on the drive. Option D is wrong because deleting partitions using Disk Management only removes the partition table entries, leaving the underlying data intact and fully recoverable until overwritten.

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28
MCQmedium

During a network upgrade, a technician needs to run new Ethernet cables through a drop ceiling. The technician notices that some existing cables are resting on the ceiling tiles and are not secured. What safety concern should the technician address?

A.Leave the cables as they are and run the new cables alongside them.
B.Secure all cables to the ceiling grid using appropriate cable supports.
C.Use zip ties to attach the cables to the sprinkler pipes for stability.
D.Remove the existing cables and replace them with the new ones.
AnswerB

Proper cable management prevents tiles from being dislodged and ensures cables are not a fire or tripping hazard.

Why this answer

Unsecured cables on ceiling tiles can cause the tiles to fall, creating a head injury risk and damaging equipment. Cables should be secured to the building structure using J-hooks or cable trays. This also prevents tripping hazards and maintains fire code compliance.

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29
MCQhard

A technician is installing a new UPS (Uninterruptible Power Supply) in a server rack. The UPS is heavy and must be mounted securely. What is the most important safety consideration during installation?

A.Ensure the UPS is connected to a grounded outlet before mounting.
B.Use a lifting team or mechanical lift to position the UPS.
C.Verify that the UPS batteries are charged before installation.
D.Install the UPS at the top of the rack for better airflow.
AnswerB

This is correct. UPS units are heavy and require proper lifting equipment or multiple people to avoid back injury or dropping the unit.

Why this answer

The UPS is a heavy piece of equipment, and improper lifting can cause serious injury or damage. Using a lifting team or mechanical lift ensures safe handling and prevents back strain, crush injuries, or dropping the unit, which is the primary safety concern during physical installation.

Exam trap

The trap here is that candidates focus on electrical safety (grounding) or operational readiness (battery charge) instead of recognizing that the immediate physical hazard of moving a heavy object is the most critical safety consideration during installation.

How to eliminate wrong answers

Option A is wrong because grounding is an electrical safety step, but it is not the most important consideration during the physical mounting of a heavy UPS; the immediate risk of injury from lifting outweighs electrical concerns at this stage. Option C is wrong because verifying battery charge is a functional check, not a safety consideration during installation; batteries can be charged after the unit is securely mounted. Option D is wrong because installing the UPS at the top of the rack creates a top-heavy stability hazard and makes lifting more dangerous; heavy components should be mounted low in the rack for stability.

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30
MCQhard

A technician is working in a server room and notices a small fire starting in a power strip. What type of fire extinguisher should be used?

A.Class A fire extinguisher (water).
B.Class B fire extinguisher (CO2).
C.Class C fire extinguisher (dry chemical).
D.Class D fire extinguisher (metal).
AnswerC

Class C extinguishers are designed for electrical fires. They use non-conductive agents to safely extinguish the fire without risk of shock.

Why this answer

A small fire in a power strip involves energized electrical equipment. Class C fire extinguishers (dry chemical) are specifically designed for electrical fires because the dry chemical agent is non-conductive, preventing the risk of electric shock. Using a water-based extinguisher (Class A) or CO2 (Class B) on live electrical equipment can cause electrocution or damage, while Class D is for combustible metals.

Exam trap

CompTIA often tests the distinction between Class B and Class C extinguishers, trapping candidates who mistakenly think CO2 (Class B) is safe for electrical fires because it is non-conductive, but CO2 is not rated for electrical fires and can cause cold shock to components.

How to eliminate wrong answers

Option A is wrong because Class A water extinguishers conduct electricity, posing a severe electrocution hazard on live electrical equipment. Option B is wrong because Class B CO2 extinguishers are primarily for flammable liquids and gases, not for electrical fires; CO2 can also cause thermal shock to sensitive electronics. Option D is wrong because Class D extinguishers are specifically for combustible metal fires (e.g., magnesium, sodium) and are not applicable to electrical fires involving a power strip.

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