CIT 1351: Chapter 4- Disassembly and Power
power conditioner
41) The _______ guards against overvoltages and undervoltages, but not against a blackout.
UPS
42) The _______ provides power from a battery to the computer during a power outage and during normal power conditions. (Give the acronym.)
surge protector
43) _______ provides protection for modems.
C, or ABC
44) To extinguish a computer fire, use a Class _____ fire extinguisher.
C
45) An electrical fire is classified as a Class _____.
mad
46) Never send an email when you are _____.
CRT monitor
6) An antistatic wrist strap should not be used when working inside a/an _____.
EMI
7) Random noise caused by a pencil sharpener that interferes with a computer speaker is an example of _____. Type the acronym.
ESD
8) Use proper grounding procedures to prevent _____ damage.
pliers
9) _______ are good for straightening bent pins.
farads
18) Capacitance is measured in _______.
current
19) Amps are a measurement of _______.
dual-rail
A ___-___ power supply has two +12V output lines.
B) CRT monitor
ESD wrist straps should not be worn when working inside a . A) Floppy drive B) CRT monitor C) Hard drive D) Power strip
false
ESDT is noise caused by electrical devices. t/f
A) AC
The power going into the power supply is power. A) AC B) DC C) Overvoltage D) Undervoltage
A) AC; DC
The power supply takes and converts it into . A) AC; DC B) DC; AC C) Electrons; bits D) Low voltage; high voltage
true
an overvoltage condition is when the voltage from the wall is over the rated amount. t/f
false
an undervoltage condition is when the voltage from the wall is over the rated amount. t/f
An SPS brings AC electricity from the wall and charges a battery that is used if AC power is removed from the computer. When AC power is provided to a wall outlet, this AC power is also provided to the outlets on the back of the SPS. The UPS also brings AC into a battery to charge it, but the battery provides DC power that is converted back to AC and provided to the electrical outlets on the back of the UPS.
compare and contrast a UPS with an SPS
Take pictures or notes so you will remember how to make connections properly. Use an antistatic wrist strap. Do not stack adapters on top of one another. Do not use magnetic tools.
describe three best practices to use when disassemblying a computer
C) Preventive maintenance
is/are measures taken to prolong the life of the computer. A) ESD B) EMI C) Preventive maintenance D) Utilities
false
keep humidity below 1 percent to reduce the threat of ESD. t/f
A technician is most likely to use a #1 Phillips screwdriver when replacing parts in a laptop. A flat-tipped screwdriver or scribe might be used to pry parts such as a laptop keyboard or hard drive cover. A cable tester would be used to verify network connectivity.
list three tools that a computer technician would most likely use on a weekly basis, and give an example of how the technician might use each tool.
true
power surges can come through the telephone line. t/f
false
preventative maintenance is done when a computer is not working. t/f
power good
26) The _______ signal is sent to the motherboard when the power supply's voltages are at their proper levels.
false
Ω is the symbol for ground. t/f
D) Nothing. The newer ATX power supply is compatible with both 20 - and 24-pin connectors
) Jessie, the PC technician, replaced a power supply in an older ATC computer. Jessie notices that the ATX motherboard connector has more pins than the main power connector coming from the power supply. What should Jessie do? A) Obtain a compatible power supply. B) Replace the motherboard. C) Obtain a 20- to 24-pin power adapter. D) Nothing. The newer ATX power supply is compatible with both 20 - and 24-pin connectors
B) An overvoltage situation
) John measures the voltage coming from the wall outlet. The voltmeter reads 135 VAC. This is _____. A) An undervoltage situation B) An overvoltage situation C) Exactly what he should expect D) A serious problem because it should be DC
D) Providing a load
) Making sure the power supply is connected to the motherboard and other devices before powering up is called _____. A) Dangerous B) Discharging C) Power interrupt enhancement D) Providing a load
B) Makes you wonder about the experience level of the technician
) Your computer displays a disk error each time you attempt to access a CD. You take the computer to the PC shop and explain that you think the problem is a bad optical drive. ʺIʹm going to strip your computer down to the bare metal,ʺ the technician says, ʺthen Iʹll rebuild it and check out every piece until I make it work right. I do that with every machine brought in here.ʺ The technicianʹs method of repairing the computer: A) Is used many times a day by most technicians B) Makes you wonder about the experience level of the technician C) Is worth the expense to get to the root of the problem D) Is the first technique recommended by all knowledgeable technicians to solve computer problems
A) Voltage
) _____ is a measure of the pressure pushing electrons through a circuit. A) Voltage B) Amperage C) Resistance D) Capacitance
Main functions of a power supply include
1. convert AC to DC 2. provide DC voltage to the motherbard, adapters, and peripheral devices 3. provide cooling and facilitate air flow through the case
1, 2
10) Cable pin numbers _____ and _____ are always found toward the ribbon cable stripe.
preventive maintenance
11) Measures taken to prolong the life of computer components are collectively known as _____.
MSDS
12) The _____ contains information about how to dispose of a particular chemical solvent.
AC
13) The type of power provided through a wall outlet is known by the acronym ________.
DC
14) The type of power a computer uses is known by the acronym ________.
volts
15) The measurement used to describe what the power supply outputs to the various computer components is ________, which is also the term that describes how much pressure pushes electrons through a circuit.
120
16) A wall outlet is typically _______ AC volts.
capacitor
17) A/An _______ is an electronic component found in power supplies and CRT monitors that stores a charge even after power is removed.
watts
20) Power is measured in _____.
resistance
21) Ohms are a measure of _____.
infinite
22) When measuring a broken wire, the meter shows _____ resistance.
switching
23) There are two basic types of power supplies. PCs use a/an _____ type power supply.
load
24) Do not power on a power supply without a/an _______ because the power supply can be damaged.
24
25) The ATX motherboard now has a _____-pin power connector as its main source of power.
converter
27) If a Molex power connector is the only connector available and a SATA power connector is needed, use a/an _______.
ac, dc
28) A power supply converts _____ to ______.
same
29) When installing an auxiliary fan, the airflow must be in the _______ [ same | opposite ] direction as/from the airflow generated by the power supply.
30
3) As little as _____ volts of static electricity can damage an electronic component.
checked
30) U.S. flight regulations state that spare lithium batteries are not allowed in _______ [ checked | carry on ] luggage.
power options
31) The Windows XP _______ Control Panel is used to select a power scheme.
power options
32) The Windows 7 _______ Control Panel link is used to select a power scheme.
auto switching
33) A laptop or netbook with a/an _______ power supply can be used in Europe and the U.S. without any switch being changed.
circuit tester
34) A/An _____ is used to test wall outlet connections.
overvoltage
35) A/An _______ condition is when the AC electrical force exceeds the rated amount.
surge, spike
36) Two overvoltage conditions are a/an _______ and a/an _______.
sag, brownout
37) Two undervoltage conditions are a/an _______ and a/an _______.
blackout
38) A total loss of power is also known as a/an _______.
surge protector
39) A/An _______ protects only against the overvoltage condition.
memory modules
4) _____ are components that are most susceptible to ESD strikes.
MOV
40) A common component in a surge protector is the _____. (Give the acronym.)
billboard
47) Write each email as if it were to be displayed on a/an _______.
antistatic wrist strap
5) A/An _____ connects a technician to the computer and places both the technician and the computer at the same potential.
power supply tester
A ___ ____ ____ can be used to check DC power levels on the different power supply connectors
grounding
A _______ problem occurs when the motherboard or adapter is not properly installed and a trace (a metal line on the motherboard or adapter) touches the computer fram, causing the adapter and possibly other components to stop working
D) Continuity
A check is used to see whether the wires in a cable are good. A) Voltage B) Amperage C) Opposition D) Continuity
A) 0 ohms
A meter reading for a good fuse shows ____. A) 0 ohms B) 0 farads C) Infinite farads D) Infinite volts
C) Switching
A computer uses a/an ____ power supply. A) Alternating B) Efficient C) Switching D) Linear
A) Amps
A fuse is rated in . A) Amps B) Volts C) Ohms D) Watts
B) Advanced Configuration and Power Interface
ACPI stands for . A) Automatic Continuous Power Integration B) Advanced Configuration and Power Interface C) Adjustable Computer Power Implementation D) Auto Conditioned Power Instance
C) Turn the ribbon cable around so that the arrow on the ribbon cable is on the opposite end of the pin marked with a 40 and connect it to the motherboard.
A home computer user studies the computer and cries in frustration to you, ʺHow can I connect the ribbon cable if the connector on the motherboard does not have a pin 1.ʺ You look at the connector site on the motherboard and confirm the observation. You say, ʺIt looks like there is only a 40 there.ʺ From the items given, pick the most logical next step. A) Remove the motherboard, turn it over, and look for a square solder joint at the connector site. B) Replace the motherboard with one that has better documentation. C) Turn the ribbon cable around so that the arrow on the ribbon cable is on the opposite end of the pin marked with a 40 and connect it to the motherboard. D) Purchase the correct cable for use on the motherboard
A) Power good signal
A is required before software from the BIOS is executed. A) Power good signal B) Password C) Surge protector good signal D) Power down signal
C) The laptop has blocked air vents.
A laptop connected to AC power shuts down after prolonged periods. What is the most logical reason for this problem considering that it is not a laptop hardware component? A) The laptop does not have the latest Windows service pack installed. B) The laptop has a short in the AC adapter. C) The laptop has blocked air vents. D) The wall outlet is not producing the minimum voltage required for the AC adapter.
A) 0 ohms
A meter reading for a good cable wire shows . A) 0 ohms B) 0 volts C) Infinite ohms D) Infinite volts
C. EMI
A noise produced by electrical device is A) ESD B) Standoffs C) EMI D) EDD
D) Its wiring list
A pin-out for a cable refers to ____. A) Its voltage requirements B) The type of output C) The type of equipment to which it connects D) Its wiring list
B) Amps; voltage
A power supply is rated in for each level. A) Volts; amperage B) Amps; voltage C) Farads; capacitance D) Ohms; resistance
C) Change the voltage selector on the laptop.
A teacher from the school where you are a technician has been invited to Vienna, Austria, and wants to take her laptop with her. They have an 802.11n wireless network. What would you suggest to her before she leaves? A) Buy a new wireless adapter. B) Leave the laptop at home. C) Change the voltage selector on the laptop. D) Do not use the battery while in Vienna.
C) Correctly install the standoffs to prevent grounding problems or worse.
A technician disassembles a desktop computer. After completely reassembling the unit, the technician observes that the motherboard standoffs were not installed. Read each statement below and select the one that best explains how the technician should handle the situation. A) There is always a screw or washer left over. These things actually donʹt make a difference in the performance of the computer. B) Start up the computer and take no other action if it works. C) Correctly install the standoffs to prevent grounding problems or worse. D) Push the standoffs against the traces until the traces touch the metal case and tape the standoffs in place. Boot the computer and complete the system check-up.
A) The line is pin 1.
A technician is looking at the ribbon cable that connects the hard drive to the motherboard and notices a thin red line running down the edge of the ribbon cable. The colored line tells the technician A) The line is pin 1. B) The ribbon cable is irregular and should not have been used. C) Caution: handle with care. D) Where to grab the cable when removing it.
C) A sine wave
AC power from an outlet can be described as . A) An adaptive current B) A continuous direct supply of current C) A sine wave D) A square wave
A) Hot; neutral
AC wiring has both a and a _____. A) Hot; neutral B) Ground; hot C) Ground; return D) On; off
A) Radio Frequency Interference
RFI stands for A) Radio Frequency Interference B) Read Format Indicator C) Real-time Frequency Impact D) Resonating From Input
A) Reinserting the drives in their original position in the drive bays
After many parts have been removed from the computer, it is possible to become confused at certain points in the reassembly process. Which task has been identified as a likely point of confusion during reassembly? A) Reinserting the drives in their original position in the drive bays B) Identifying the colored edge of a ribbon cable C) Identifying the difference between a CD/DVD drive and a floppy disk drive D) Inserting a keyed cable into its socket
C. 30
An electronic component can be damaged with as little as volts of static electricity. A) 2 B) 10 C) 30 D) 40
A) Switching time
An important factor when considering an SPS is . A) Switching time B) Modem speed C) Network connection speed D) The cost of electricity
A) 3000 volts
At what point can a static discharge be felt by the average person? A) 3000 volts B) 6000 volts C) 12,000 volts D) 24,000 volts
D) Farads
Capacitance is measured in A) Amps B) Watts C) Ohms D) Farads
D) Unprofessionalism
Consider the following email to a fellow technician: ʺHey Joe! I really need some help here. I have a hard drive that will not keep a second partition. I KNOW THAT YOU SON OF A GUN REALLY KNOW THIS STUFF and i want your xpert mind. :-) Would you help me out? a3, awhfy? : -)ʺ This is an example of A) Good written communication skills B) Being proactive C) Teamwork D) Unprofessionalism
D) Improper technical support technique
Consider the following email to faculty from the computer support person at a school: ʺDear faculty, Welcome Back! I need to know what software you need changed for the coming semester. If you could let me know the software application, show me the proof of purchase for the required number of computers, let me know the room to install it, provide me with the installation instructions, ensure it is compatible with the printers we are using, verify that it works on Windows XP before you give it to me, and be willing to test it before term begins, I will be HAPPY to load it for you. Thanks and letʹs have a good term!ʺ This is an example of A) Good written communication skills B) Being proactive C) Teamwork D) Improper technical support technique
A) Good written communication skills
Consider the following note left by a technician after a service call: ʺMs. Jones, I am happy to report that I was able to repair your computer. It had a virus. The virus has been removed. I suggest you ask your company to purchase an antivirus application for your machine. Call our company any time you have any more problems at 904-555-help. Thanks and have a great day! Charlene, your computer repair person.ʺ This is an example of A) Good written communication skills B) Being proactive C) Teamwork D) Improper technical support technique
A) Amps
Current is measured in . A) Amps B) Watts C) Ohms D) Farads
false
DC stands for digitally corrected current. t/f
B) I should have vacuumed first.
Douglas was a proud home computer user. He had his computer for 3 years and never had to open the case once. Douglas bought a large can of compressed air at the computer store because he heard compressed air was the appropriate tool to use when cleaning the computer. He took the unplugged computer to the dining room, opened the case, stuck the nozzle a few inches from the motherboard and sprayed. After several seconds of spraying, there is a strong likelihood for Douglas to think A) Oh, my gosh! The air forced some of the microchips off the motherboard. B) I should have vacuumed first. C) Compressed air isnʹt what it is cracked up to be. D) This compressed air stinks! No one should be allowed to use this stuff.
true
EMI is noise caused by electrical devices. t/f
B) ElectroMagnetic Interference
EMI stands for A) ElectroMagnetic Input B) ElectroMagnetic Interference C) ElectroMagnetic Impulse D) Electronic Measurement Indicator
D) ElectroStatic Discharge
ESD stands for A) Enhanced Silicon Differential B) Electric System Dynamics C) Electronic Shock Discharge D) ElectroStatic Discharge
D) All these answers are important for a technician to have.
For each service call the technician should be equipped with A) Pen, pencil, and notepad B) Basic tools C) Good attitude D) All these answers are important for a technician to have.
D) Surge protector
For which of the following would you consider the TVS rating? A) Optical disk drive B) Scanner with a USB connection C) Monitor screen viewable area D) Surge protector
D) All these answers are true.
From the following choices, choose the answer that best represents a proper disassembly tip: A) Place removed adapters in an ESD bag. B) Make note of motherboard jumpers. C) Avoid stacking adapters one on top of another. D) All these answers are true.
C) All pins connect one to one
From the following, select the item that makes this statement FALSE. When performing a continuity check on a cable _______ A) Not all pins are wired to the matching pin on the other end B) Not all pins have to be connected to a pin on the other end C) All pins connect one to one D) A 0 ohm reading means a good connection
C. working
G0 C. Working D. Sleeping
D. sleeping
G1 C. Working D. Sleeping
A. soft off
G2 A. Soft off B. Mechanical off
b. mechanical off
G3 A. Soft off B. Mechanical off
D) Tell Harry to look at the orientation of the colored stripe on the last remaining attached cable and plug the other cables in the same direction.
Happy-go-lucky Harry decides to open his computer case to see what he could see. After a few moments of pondering, he notices five ribbon-like cables on the motherboard. He pulls at one and disconnects it from the motherboard. Delighted at his success at removing something, he pulls out all but one cable. He is interrupted by a phone call and when he returns, he realizes that he has forgotten which direction the cables face to be correctly reinserted into the board. What is the simplest thing you can do to solve Harryʹs problem? A) Take away Harryʹs computer and tell him that he has been naughty. B) Tell Harry to insert the cable in one direction and turn the computer on. If the function of the device works, then move to the next cable and repeat the test. C) Tell Harry that all cables on the motherboard are placed with pin 1 on the right. D) Tell Harry to look at the orientation of the colored stripe on the last remaining attached cable and plug the other cables in the same direction.
C) Automatically lock the heads in place away from the area where data is stored when the computer is turned off
Hard disk drives have self-parking heads that A) Use software to make the heads pull away from the data area and park in a safe zone on the platter B) Make the hard disk drive safe from any jolts and jarring vibrations C) Automatically lock the heads in place away from the area where data is stored when the computer is turned off D) Allow the hard disk to be disassembled and reassembled without the fear of losing data
A) Keep in contact with the metal case of the power supply.
How can you reduce the chance of static electricity harming your computer when an antistatic strap is not available? A) Keep in contact with the metal case of the power supply. B) Improvise by holding the metal found on your clothing such as a belt buckle with one hand and then work with the other hand. C) Disconnect all batteries on the motherboard. D) Avoid wearing garments made of synthetic fibers.
clamping speed
How much time elapses before protection begins. The lower the value, the better the protection. Surge protectors cannot normally protect against power spikes (overvoltages of short duration) because of their rated clamping speed.
B) Is not recoverable
If an ESD event occurs, the damage A) Is reduced by wearing an antistatic wrist strap B) Is not recoverable C) Is reduced by turning off the computer D) Is harmless
A) Heavier
If two power supplies are of equal wattage, the rule of thumb says the better one will be _____. A) Heavier B) Bigger C) Made in China D) Smaller
D) Power supply
In Jacksonville, a horrific thunder storm rolled through the area. Afterward, Karl walked into his home office and smelled a strong burning odor. Which component is most likely causing the odor? A) CPU fan B) CPU C) Motherboard D) Power supply
A) Metal line on the motherboard or adapter
In the computer industry, a trace is a A) Metal line on the motherboard or adapter B) Computer chip C) Power booster TRansient Alternating Current Emulator D) Small amount of something, as in a trace of data
D) Capacitors
It can be dangerous for a technician to work on an unplugged monitor due to the charge held by the A) Fuses B) Resistance C) Screen D) Capacitors
A, D
Joe, the junior technician, is helping with a department move to a different area of the building. Which two of the following are true regarding this move? A. When connecting surge strips, Joes should ensure they are not installed in a walk path of the office area. B. Joe should install new surge protectors. C. Joe should verify the electrical outlet voltage. D. Joe should use a cart when moving the equipment. E. Joe should not set tower computers on a carpeted area
D) ʺIs there a fan in your office?ʺ
Margaret complains that her office computer locks up during the hottest month of the summer each summer for the past several years. The help desk technician suspects that the problem is related to RFI and asks A) ʺDo you use cologne near the computer?ʺ B) ʺDo you place a glass of water on your computer desk?ʺ C) ʺDoes your computer have a surge protector?ʺ D) ʺIs there a fan in your office?ʺ
D) Connect the AC adapter and power on the laptop
Nelly, the-constant-nag computer user, complains that her laptop is broken. She states that she charged the laptop battery last night, but when she powered on the laptop at the first customer office, the laptop would not power on. What is the first step in troubleshooting this problem? A) Tell Nelly to call the help desk. B) Remove all nonessential peripheral devices such as the optical drive and wireless adapter and power on the laptop. C) Do an extended memory test on the laptop. D) Connect the AC adapter and power on the laptop
A) Number 2 stenciled on the board
On the motherboard or the adapter card, the location of pin 1 might not be easily recognizable. If a number 1 is not stenciled on the board at the connector site, look for a A) Number 2 stenciled on the board B) Colored stamp on the board C) Pin with a longer length D) All these answers are true.
B) Square shaped solder joint on the back of the board at the connector site
On the motherboard the location of pin 1 might not easily be recognized. If the pin number is not stenciled on the board at the connector site, look for a A) Red stamp on the board B) Square shaped solder joint on the back of the board at the connector site C) Pin with a shorter length D) Blue stamp on the board
B) Draw diagrams as you disassemble the computer.
One practical method to lower frustration that arises when reassembling the computer is A) Know where the traces on the motherboard lead. B) Draw diagrams as you disassemble the computer. C) Meditate before disassembling and reassembling. D) Always have the correct tool on hand.
C. Pin 1
Pin 1 on the ribbon cable connects to on the adapter or motherboard. A) Pin 20 B) Pin 10 C) Pin 1 D) It depends the adapter type and motherboard model.
D) Risk serious danger to the system because current runs through the motherboard, even when the computer is turned off
Plug one end of the power cable into the wall and the other end into the computer while performing maintenance on a newer computer to A) Reduce the chance of electricity hurting the system B) Make the computer safe to work on C) Provide extra power for a technicianʹs electric tools D) Risk serious danger to the system because current runs through the motherboard, even when the computer is turned off
B) DC
Polarity is important when measuring . A) AC B) DC C) Resistance D) Capacitance
C) Volts X amps
Power is calculated as . A) Amps X farads B) Amps X ohms C) Volts X amps D) Volts X ohms
B) Watts
Power is measured in . A) Amps B) Watts C) Ohms D) Volts
C) Ohms
Resistance is measured in . A) Amps B) Watts C) Ohms D) Farads
B. No power management is active
S0 A. CPU is not powered, but info in RAM is being refreshed. B. No power management is active.
E. CPU slowed or stopped, but still powered; unused devices powered down.
S1 E. CPU slowed or stopped, but still powered; unused devices powered down. F. Computer is shut down by the operating system.
A. CPU is not powered, but info in RAM is being refreshed
S2 A. CPU is not powered, but info in RAM is being refreshed. B. No power management is active.
C. Power supply reduced power, but RAM is being refreshed.
S3 C. Power supply reduced power, but RAM is being refreshed. D. Info in RAM is saved to hard drive.
D. Info in RAM is saved to hard drive.
S4 D. Info in RAM is saved to hard drive. E. CPU slowed or stopped, but still powered; unused devices powered down.
F. Computer is shut down by the operating system.
S5 E. CPU slowed or stopped, but still powered; unused devices powered down. F. Computer is shut down by the operating system.
C) Metric nut driver, pliers, AC circuit tester, and screw-starter tool
Some tools a technician uses are nice to have, whereas others are a necessity. The nice-to-have tools include A) Medium flat-tipped screwdriver, small flat-tipped tweaker screwdriver, and #1 Phillips screwdriver B) #2 Phillips screwdriver, ¼ inch nut driver, and 3/16 -inch nut driver C) Metric nut driver, pliers, AC circuit tester, and screw-starter tool D) Small diagonal cutters, needle nose pliers, and spare floppy disks
A) Replace the power supply.
Stella, the technician, suspects the fan on a power supply is bad because the computer keeps turning off, and she can see that the fan does not move. Stella should A) Replace the power supply. B) Replace the power supply fan. C) Install an auxiliary case fan. D) Install an auxiliary motherboard fan.
E) Patty forgot to plug the power cord into the computer
Take-it-apart Patty had some experience in troubleshooting her PC. One day she decided to take the next big step by completely disassembling her computer. When she reassembled it and turned the computer on, she heard nothing, smelled nothing, and saw nothing. Poor, Patty! She did something wrong! Look at the following choices and select the one that would have most likely caused the problem. A) Pin 1 on the hard disk drive ribbon cable was plugged into the motherboard in the wrong direction. B) Patty forgot to connect the power supply to the motherboard. C) Patty plugged the mouse into the keyboard connector. D) Patty put the internal modem in the wrong expansion slot. E) Patty forgot to plug the power cord into the computer
C) Wake on LAN
Thanks to ACPI, a network administrator can remotely power on a computer with a _____ command. A) Soft-off B) BIOS Flash C) Wake on LAN D) Hot Key Power On
B) Small needle nose pliers
The computer service desk received a work order to repair a keyboard. The computer user complained that he could not reconnect the keyboard into its socket on the motherboard. When the technician arrives, he examines the DIN keyboard connector and concludes the problem is routine and can be easily fixed. What tool would most likely be used to make the repair? A) #2 Phillips screwdriver B) Small needle nose pliers C) 1/4-inch nut driver D) Diagonal cutters
energy absorption/dissipation
The greater the number of joules (a unit of energy) that can be dissipated, the more effective and durable a surge protector is. This feature is sometimes called energy absorption. A surge protector rating of 630 joules is more effective than a rating of 210 joules.
clamping voltage
The level at which surge protector starts protecting the computer. The lower the value, the better the protection.
C) 110 to 130 VAC
The proper voltage from a wall outlet is . A) +5 to +12 volts DC B) 90 to 100 volts AC C) 110 to 130 VAC D) More than 200 volts AC
B) Molex; Berg
The two types of power connectors are _____and _____. A) French; Standard B) Molex; Berg C) Keyed; Return D) Pyrex; Sentinel
A) Vacuuming the computer, cleaning CD/DVD laser, and using urethane swabs to clean between the keys on a keyboard
Three common tasks performed during preventive maintenance include A) Vacuuming the computer, cleaning CD/DVD laser, and using urethane swabs to clean between the keys on a keyboard B) Cleaning the CPUʹs gold pins, lubricating disassembled drives, and replacing cables C) Using alcohol to clean the case, moving adapters to different locations on the motherboard, and pressing the power-on and off button 10 times in quick succession D) Replacing the computer case, upgrading the microprocessor, and using soap and water to clean printer rollers
A, D
To prevent ESD, which TWO of the following are the most effective? A) Use an antistatic wrist strap. B) Use antistatic spray on a lint free cloth and apply to the monitor. C) Use antistatic spray or diluted fabric softener on carpet. D) Put the computer on an antistatic mat. E) Touch the computer once on a metal part before you remove any component. F) Place the disconnected power cord between you and the computer if you do not have an antistatic wrist strap
B) A lint-free cloth
To which of the following would you apply monitor cleaning solution? A) A monitor B) A lint-free cloth C) A sponge D) A lint-free urethane swab
C) A Type C fire extinguisher
Use to put out a computer fire. A) Water B) A fire resistant blanket C) A Type C fire extinguisher D) A Type A fire extinguisher
D) Low humidity
What atmospheric condition can increase the potential for static electricity? A) High temperatures B) Atmospheric conditions have little impact on static electricity C) Low temperatures D) Low humidity
B) The laptop operates only from AC power.
What is the best indication that a laptop battery needs to be replaced? A) The laptop has to be constantly restarted. B) The laptop operates only from AC power. C) The laptop constantly reboots on its own. D) The laptop operates only from DC power.
B) The highest
What meter setting should be used initially when measuring an unknown voltage? A) Infinite B) The highest C) Amps D) The lowest
C) Induction of a current
What unique danger does a magnetic screwdriver present while removing screws that hold an adapter card and motherboard, or picking up a dropped screw? A) Scratching the surface of the adapter or board B) Stripping the head of a screw C) Induction of a current D) Picking up more than what was intended
E) Power options control panel—Hibernate tab
Where would you allow hibernation for a Windows XP laptop? A) Through the system BIOS B) Display control panel—Screen Saver tab C) Display control panel—Power tab D) Power options control panel—Power schemes tab E) Power options control panel—Hibernate tab
E) Disable USB ports that are not being used.
Which item will NOT help with laptop battery conservation? A) Reduce screen brightness. B) Use a battery from the laptop manufacturer. C) Refrain from using the optical drive. D) Turn off the wireless adapter. E) Disable USB ports that are not being used. F) Avoid saving documents frequently
C) +3.3 volts
Which of the following could be a valid voltage coming from the power supply to one of the computerʹs components? A) +9 volts B) +6 volts C) +3.3 volts D) 112 volts
A) MSDS
Which of the following describe how to dispose of print roller cleaner? A) MSDS B) BIOS C) EMI D) SETUP
A) Surge protector
Which of the following devices does NOT protect in an undervoltage condition? Which of the following devices does NOT protect in an undervoltage condition? A) Surge protector B) UPS C) UPS with power conditioning D) Line conditioner
D) SPS
Which of the following devices provides battery power to the computer only when there is a blackout? A) Surge protector B) UPS C) UPS with power conditioning D) SPS
D) Provide current to the monitor.
Which of the following is NOT a purpose for the power supply? A) Provide cooling for the computer. B) Convert AC to DC. C) Provide power to the computer. D) Provide current to the monitor.
C) The CD drive is inoperable.
Which of the following is NOT typically a symptom of a power supply problem? A) The computer light is off. B) The power supply fan is inoperable when the computer is on. C) The CD drive is inoperable. D) When the computer powers up, it does not beep.
A) Water and lint-free cloth
Which of the following is best to clean a laptop screen? A) Water and lint-free cloth B) Monitor cleaning solution and lint -free urethane swabs C) Alcohol-free cleaning solution and a sponge D) Ammonia and lint-free cloth
B) A paper clip
Which of the following items could be useful in performing a continuity check on a cable that has small pin connections? A) A dime B) A paper clip C) Wire cutters D) Chewing gum
D) All of these items would most likely be found in the kit
Which of the following items listed are most likely to be found in a technicianʹs preventive maintenance kit? A) Laser printer vacuum B) Compressed air C) Denatured alcohol D) All of these items would most likely be found in the kit
C) Unplug the computer and use an antistatic wrist strap.
Which procedure would you follow to prevent ESD? A) Use warm water with soap and a general purpose cloth. B) Move the computer to a different wall outlet and to a different location. C) Unplug the computer and use an antistatic wrist strap. D) Close the shades on the window to keep sun rays off the computer.
A, E
Which type of fire extinguisher could be used for a paper fire? A) Type A B) Type B C) Type C D) Type D E) Type A-B-C F) Type B-C-D
A) Some screwdrivers and nut drivers
While at work, Max, a computer user, calls the computer repair center and requests that additional RAM be added to his new office PC. What tools would you consider most important for the technician to carry? A) Some screwdrivers and nut drivers B) A multimeter and probe C) A chip insertion and removal tool D) Soldering iron and solder
B, C
While attempting to remove an adapter, the screw that secures the card to the case drops between two other adapters on the motherboard. Which of the following should you use to safely remove the screw? A) Magnetic screwdriver B) Needle nose pliers C) Hemostat D) Magnetic screw picker-upper E) Your fingers
B) Can be inserted only one way
While working with a ribbon cable and connector, you discover that the connector is keyed. This means that the connector A) Can be removed only with a key B) Can be inserted only one way C) Has been stamped with a special identity number/code D) Is ready to perform the task that it has been assigned
A) Some people may be sensitive to the dust blown into the air.
Why is it best not to start cleaning a computer by using compressed air? A) Some people may be sensitive to the dust blown into the air. B) Pressure may damage the fragile electronic equipment. C) Heavy dirt canʹt be moved by the compressed air. D) The turbulence from the compressed air causes an RFI disturbance
B) The motherboard and operating system to control the power supply
With an ATX power supply, there is a connection from the front panel switch to the motherboard. This allows _____. A) Voltage regulation B) The motherboard and operating system to control the power supply C) The operating system to establish the proper resistances D) The user to set the voltage supplied by the outlet
A. A
You are considering two surge protectors. A has a 330 TVS rating and B has a 400 TVS rating. All else equal, which is preferable? A) A B) B C) Does not matter D) Trick question; surge protectors do not have a TVS rating.
false
You are responding to an email from an irate customer. On your reply, you send a copy to your boss so that he is informed of the situation. This is an appropriate tactic to take for proper written communication
false
You are responding to an email from an irate customer. The reply is as follows: ʺI am sorry the computer locked up again. I will be happy to take a look at the computer again tomorrow. It is probably your CPU or your RAM. Of course, it could always be the darn motherboard. I can be there at 2 P.M. TOMORROW if that is convenient with you. You can either EMAIL me or I will check with you later today to see whether that works with your schedule. :)ʺ This is an example of proper written communication. t/f
true
You are responding to an email from an irate customer. The reply is as follows: ʺI am sorry the replaced part did not solve your problem. I will be happy to take a look at the computer again tomorrow. I can be there at 2 P.M. if that is convenient with you. You can either email me or I will check with you later today to see whether that works with your schedule.ʺ This is an example of proper written communication. t/f
A, B
You can identify pin 1 on a ribbon cable by looking for A) An arrow etched into the cable connector B) A colored stripe running down the edge of the cable C) A numbered sticker on the cable D) A notch on the last cable E) The number 1 stenciled on one wire
C) The dirt and grease from your fingers can collect on the contacts.
You should avoid touching the adapter contacts because A) The contacts are brittle and will easily break apart. B) The contacts store enough electrical charge to produce a health risk if you are poorly grounded. C) The dirt and grease from your fingers can collect on the contacts. D) The contacts become too hot to touch.
A) Same or lower
You should replace a fuse with one that has a ____ amperage rating. A) Same or lower B) Strictly higher C) same or higher D) strictly lower
B) The outlet is supplying power.
You turn your computer on and nothing happens. The computer light is off. You check the fan and it is running. Which of the following can you assume? A) The on/off button is malfunctioning. B) The outlet is supplying power. C) The motherboard is bad. D) There is no operating system installed.
A) Faulty power supply
You turn your computer on and nothing happens. The computer light is off. You check the fan and it is running. Which of the following is a likely source of the problem? A) Faulty power supply B) Faulty hard drive C) Voltage problem with the mother board D) Bad power cord
ACPI (advanced configuration and power interface)
_ _ _ _ gives the BIOS and operating system control over various devices' power and modes of operation
I/O shield
_ _ _____ is a part what allows for optimum air flow and grounding for the motherboard ports.
Wake on LAN
___ __ ___ feature allows a network administrator to control the power to a workstation remotely and directs the computer to come out of sleep mode.
Wake on Ring
___ __ ____ allows a computer to come out of sleep mode when the telephone line has an incoming call.
Li-ion
___ ___ batteries, which are very light and can hold a charge longer than any other type. They are also more expensive. Mobile phones, tablets, portable media players, and digital cameras also use
capacitator
___ is a component that holds a charge even after the computer is turned off
3000
___ volts need to be present before an average person can feel static electricity.
ESD
____ is static electricity that enters an electronic component causing damage to it.
electrostatic discharge
_____ is a difference of potential between two items that causes static electricity
true
a colored stripe on one side of a cable determines pin 1. t/f
true
a continuity check is used to see whether the wires in a cable are good. t/f
false
a magnetic screwdriver is a good tool to have for dropped parts on a computer motherboard. t/f
false
a meter reading for a good cable wire shows 200 ohms. t/f
true
a metering reading for a good fuse shows 0 ohms. t/f
false
a soldering iron is one of the most common tools used by technicians. t/f
true
a technician can cause data loss on the hard drive if the hard drive is mishandled. t/f
AC (alternating current)
electricity provided by wall outlet
true
the effects of ESD are cumulative. t/f
false
the output from the power supply to the computer devices is AC power. t/f
false
the power going into the power supply is DC power. t/f
true
the two most common types of computer power connectors are molex and berg. t/f
false
two of the most typical power supply output voltages are +5 and +10 volts. t/f
DC (direct current)
type of electriciy used by computer components
true
when replacing a power supply, choose a power supply that is greater or equal in power rating. t/f
