C.3.4 CompTIA A+ 220-1102 (Core 2) Domain 4: Operational Procedures

Besides protecting a computer from under-voltages, a typical UPS also performs which other actions? (Select two.) Answer Conditions the power signal Protects network cabling from EMI Protects from over-voltages Prevents ESD Prevents electric shock

Protects from over-voltages Conditions the power signal

Your local area experiences brownouts or blackouts during frequent electrical storms. Which of the following components could you add to your network rack to help protect your servers from brownouts or blackouts? Answer UPS Ethernet switch Wireless controller Patch panel

UPS

Of the following choices, which action could cause the MOST permanent physical harm to you? Answer Using a computer without a surge protector. Looking into the end of a fiber optic cable. Wearing a grounding strap while installing a modem. Force-ejecting a stuck DVD disc using a straightened paper clip.

Looking into the end of a fiber optic cable.

What should you use to clean metal contacts (like those found on expansion cards)? Answer Compressed air Damp cloth Cleaning solvent Denatured isopropyl alcohol

Denatured isopropyl alcohol

What is the BEST way to dispose of printer cartridges? Answer Place them in a standard recycling bin. Place them in the regular trash. Return them to the manufacturer for recycling. Deliver them to a local recycling facility.

Return them to the manufacturer for recycling.

Hard drives are best stored in which of the following? Answer Plastic bag Static shielding bag Styrofoam-lined box Refrigerator

Static shielding bag

Which of the following will help reduce the threat of static discharge when working on computer hardware? (Select two.) Answer Reduce the humidity in the room to around 30%. Store unused components in static shielding bags. Leave the system plugged into a grounded wall outlet. Place your hardware on an insulating layer of 1/4 inch Styrofoam. Remain in physical contact with the server chassis at all times. Touch the leads on the PC components with your finger to dissipate static charge.

Store unused components in static shielding bags Remain in physical contact with the server chassis at all times.

You are trying to help a co-worker order a UPS for each PC in her remote office location. What rating is used to specify the size of a UPS? Answer Watts VA Volt/ohm Volts

VA --volt/amp rating

Which of the following are most helpful in keeping a computer cool? (Select two.) Answer Use a high-wattage power supply. Install a thermostat in the fan circuit. Vacuum dust from the system regularly. Remove the slot cover from the back of the computer. Verify that cooling fans are not circulating air in the wrong direction.

Vacuum dust from the system regularly. Verify that cooling fans are not circulating air in the wrong direction.

Your company provides testing services that help customers identify and resolve performance issues with their software and e-commerce sites before they go live. To perform accurate testing, a large number of computers are required, sometimes numbering in the hundreds. Recently, you have noticed that the lights in the testing lab seem dimmer than normal and sometimes flicker. Which of the following electrical terms BEST describes the condition you are most likely experiencing? Answer Power spike Blackout Power surge Brownout

Brownout

Which of the following is true about CRT monitors? Answer CRT monitors can be disposed of in the regular trash. CRT monitors should be discharged before disposal. CRT monitors can be disposed of in the recycling bin. CRT monitor capacitors lose their charge after six months of not being used.

CRT monitors should be discharged before disposal.

Katy is a IT engineer who is responsible for maintaining the environment in her company data center in San Francisco. While swapping motherboards in a server in the data center, she notices that the original motherboard is showing signs of corrosion. Which of the following is the BEST solution to resolve the corrosion issue? Answer Decrease the humidity in the data center. Run a diagnostic check on all servers to make sure they are functioning properly. Replace motherboards in the servers more frequently. Check and clean all corroded server motherboards.

Decrease the humidity in the data center.

What should be your top priority when responding to emergencies and hazardous situations? Answer Prevent the release of hazardous elements into the atmosphere. Preventing damage to equipment. Protect your organization's data. Ensure the safety of people in the area.

Ensure the safety of people in the area.

What method is used to ensure proper ventilation in a server room? Answer Hot and cold aisles Internal fans Maintaining a steady temperature Internal cooling systems

Hot and cold aisles

Which of the following device types should be plugged into a surge-protected-only outlet on a UPS unit and not a battery backup outlet? Answer Secondary LCD monitor External hard disk drive Inkjet printer Laser printer

Laser printer

To prevent ESD when replacing internal computer components, you attach an anti-static wrist strap to your wrist. Where should the other end be fastened? (Select two.) Answer Screw on the wall power outlet Ground wire on the wall power outlet Ground wire on the power supply Metal area on the computer case Anti-static mat

Metal area on the computer case Anti-static mat

Which of the following are common tools used to physically clean the inside of a computer? (Select two.) Answer Damp rag Natural bristle brush Compressed air Wire brush Industrial degreaser

Natural bristle brush Compressed air

Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit? (Select two.) Answer Coarse grade bag Non-static generation Static induction motor Washable filters Blows as well as vacuums

Non-static generation Blows as well as vacuums

Which of the following are safety benefits are associated with encasing cables that run across the floor? (Select two.) Answer Improves aesthetics Reduces tripping accidents Prevents tampering with the cable(s) Prevents wear Secures data transmitted on data cables from eavesdropping

Secures data transmitted on data cables from eavesdropping

A security incident is currently occurring on your company's network. You discover that the attack involves a computer system that is attached to the network. You are unsure what kind of damage is being done to the network systems or data. Which of the following actions should you take FIRST? Answer Stop the attack and contain the damage by disconnecting the system from the network. Determine whether you have the expertise to conduct an investigation or whether you need to call in additional help. Document and photograph the entire crime scene, including the current state of the attached computer system. Examine the active computer system to analyze the live network connection, memory contents, and running programs.

Stop the attack and contain the damage by disconnecting the system from the network.

What does occasional beeping from the UPS mean? Answer The UPS battery is no longer able to hold a charge. The UPS is not connected to the computer. The computer is about to shut down. The computer is running on the UPS battery power. The power reserve in the UPS battery is critically low.

The power reserve in the UPS battery is critically low.

Which of the following is true about negative pressure systems? Answer They force air out through windows, doors, and other openings. They filter out airborne particles. They are more energy-effective than positive pressure systems. They can bring in airborne particles, such as dust or smoke.

They can bring in airborne particles, such as dust or smoke.

You work for a large company that has over 1,000 computers. Each of these computes uses a wireless mouse and keyboard. Therefore, your company goes through a lot of alkaline batteries. When these batteries can no longer power the intended device, you need to decide what to do with them. Unless otherwise dictated by your local authorities, which of the following would be the EASIEST way to deal with these batteries? Answer They must be sent to hazardous waste collection. They can be recharged. They must be stored onsite until they expire. They can be thrown in the trash.

They must be sent to hazardous waste collection.

Your company resides in an area with rapid growth in both the corporate and residential areas surrounding your office. As such, your company has been experiencing several brownouts due to power grid problems (too much demand and not enough electricity). Fearing that your computers (especially the servers) could be damaged by these brownouts, your manager has asked you to find a solution to this problem. Which of the following would be the BEST device to recommend to your manager for computer protection? Answer GFCI Power strips UPS Surge suppressor

UPS

Jeannette's workstation is overheating. She decides to open the workstation and clean any accumulated dust to see if it helps with the overheating issue. Which of the following can Jeannette safely do to remove dust? (Select two.) Answer Use short bursts of compressed air to clean delicate components. Remove the power supply to do detailed cleaning. Use a continuous stream of compressed air to clean all components. Use a lint-free cloth and cleaning solvent to remove all dust accumulation. Use a special vacuum to clean dust from all hardware components.

Use short bursts of compressed air to clean delicate components. Use a special vacuum to clean dust from all hardware components.