2.4.3 - PC Tools - Practice Questions

Which tool would you use to grab and lift small objects? -------------------------- Cable tester 3-prong holder IC extractor Multimeter

3-prong holder --------------------------- A 3-prong holder is a tweezer-like tool with three prongs used for grabbing and lifting small objects. A multimeter measures electrical properties such as voltage, amps, and resistance. An IC extractor is a tweezer-like tool, usually spring-loaded in the open position, used to remove integrated circuit chips. A cable tester verifies that a network can carry a signal from one end to the other and that all wires within the connector are in their correct positions.

Which of the following tools can help prevent damage when working with computer components? ------------------------------------------------- Antistatic pad and wrist strap Three-pronged parts retriever Tone generator and probe IC insertion and extraction tool

Antistatic pad and wrist strap ------------------------------------- An antistatic pad provides an insulated covering to prevent static electricity from moving between objects and damaging computer components. When working with computer components, use a wrist strap connected to the antistatic pad and connect the pad to a ground.

You suspect that the power supply in your desktop PC is failing. You want to use a multimeter to test the power supply. Which multimeter setting should you use? ----------------------------- Ohms DC volts Watts AC volts

DC volts ----------------------- To measure the output of a power supply, measure DC voltage. A power supply converts AC voltage to DC voltage and supplies the DC power to computer components. AC is the voltage input for a power supply. To measure the input, measure the power from the wall socket. An ohm is a measure of resistance used to check the properties of a resistor. Multimeters can measure amps, but do not measure watts.

You are removing screws within a computer, but several have fallen into places you can't reach. Which tool would help retrieve the small screws? -------------------------------- Screwdriver IC extractor Needle-nose pliers Extension magnet

Extension magnet -------------------------- An extension magnet is a small magnet on a collapsible rod that is used to retrieve screws that have fallen into a computer case or other areas you cannot reach. An IC extractor is a tweezer-like tool, usually spring-loaded in the open position, used to remove integrated circuit chips. Unless the lost parts are in an easily accessible location, a screwdriver or pair of pliers would be unlikely to help you retrieve them.

Which tool would be the best choice for removing and replacing the motherboard BIOS chip? --------------------------------------- Combination ratchet Screwdriver IC extractor Needle-nose pliers

IC extractor ----------------------- An IC extractor is a tweezer-like tool, usually spring-loaded in the open position, used to remove integrated circuit chips. Using other tools, such as pliers or a screwdriver, could potentially damage the chip or the motherboard. A combination ratchet has interchangeable bits with a ratcheting handle that provides multiple features in a single tool.

Your workstation is unable to communicate with any other computer on the network. Which of the following tools should you use to test the network card's abilities to send and receive signals? ------------------------- Multimeter Ohmmeter Cable tester Loopback plug

Loopback plug ------------------------- Use a loopback plug to test the network card's ability to send and receive signals. Pinging the local host (ping 127.0.0.1) tests the TCP/IP protocol stack, but does not actually send signals out the network card. A cable tester tests continuity of all wires in a cable and ensures that wires are connected appropriately in the plugs. Use a multimeter and an ohmmeter to test the electrical properties of cables and signals.

A printer is behaving erratically, and you suspect a faulty parallel port. Which tool can you use to test the parallel port? -=--------------------------------------------- Ammeter Multimeter Loopback plug Cable tester

Loopback plug ----------------------------- A loopback plug allows an output signal to be returned as input. Loopback plugs are used to test serial and parallel ports. A cable tester verifies that a network can carry a signal from one end to the other, and that all wires within the connector are in their correct positions. A multimeter measures electrical properties such as voltage, amps, and resistance. An ammeter is an instrument that measures the flow of electric current in a circuit.

Which tool would you use to measure electrical properties such as voltage, amps, and resistance? ------------------------------------------------------- Mini electronic combination wrench set Cable tester Multimeter IC extractor

Multimeter ------------------------- A multimeter measures electrical properties such as voltage, amps, and resistance. A mini electronic combination wrench set is a set of standard wrenches designed to be used on electronic components. An IC extractor is a tweezer-like tool, usually spring-loaded in the open position, used to remove integrated circuit chips. A cable tester verifies that a network can carry a signal from one end to the other and that all wires within the connector are in their correct positions.

A technician is troubleshooting a computer that doesn't start up correctly. Which of the following tools could the technician use to troubleshoot the computer? (Select TWO). ---------------------------------------- Three-pronged parts retriever POST Card Known good spares Loopback plug Tone generator and probe

POST Card Known good spares -------------------------------------- A POST card is an expansion board that you insert into an expansion slot. It is typically used to troubleshoot a computer system that doesn't start up correctly. The POST card displays output from the BIOS during the Power-On Self-Test (POST). Known good spares are a set of components that you know are in proper functioning order such as a power supply or an expansion card. A three-pronged parts retriever is used to grasp and retrieve small parts that have fallen into areas that are difficult to reach. A tone generator and probe are used to trace a wire from one location to another, especially through the walls of a building. A loopback plug is used to test network communications by redirecting a signal from the transmit port on a device to the receive port on the same device.

Which of the following tools is specifically designed to test the DC voltage on a hard disk drive power connector? ----------------------------------------------------- Multimeter Loopback plug Power supply tester Cable tester

Power supply tester -------------------------- A power supply tester is specifically designed to test DC voltage on most connectors coming from a PC power supply. A multimeter measures electrical properties such as voltage, amps, and resistance. A multimeter can also be used to test DC voltage on a Molex connector; however, it isn't a tool dedicated to this purpose. A cable tester verifies that a network can carry a signal from one end to the other and that all wires within the connector are in their correct positions. A loopback plug lets you test a port for proper functionality. The loopback plug crosses the receive and transmit wires. Essentially, this lets the computer send a signal to itself.

Which of the following BEST describes the purpose for which loopback plugs are used? ------------------------------------------------------ Grabbing and lifting small objects. Connecting computers together without using network cards or modems. Removing broken pins within sockets. Testing ports by returning output signals as input.

Testing ports by returning output signals as input. ------------------------------------------------------ Loopback plugs are used to test ports by returning output signals as input. Use a loopback plug to test the functionality of serial ports or networking ports. Null modem cables are used to connect computers using their serial ports without the need for a modem and phone line connection. A 3-prong holder is a tweezers-like tool with three prongs used for grabbing and lifting small objects. An IC extractor is a tweezer-like tool, usually spring-loaded in the open position, used to remove integrated circuit chips.

You need to trace the route that a Cat 6 UTP cable takes through the ceiling and walls of your building. Which tool should you use? ---------------------- Tone generator Cable tester Multimeter Loopback plug

Tone generator -------------------------------- A tone generator is used to trace a UTP cable through walls and ceilings. A tone generator is attached to one end of the cable. Then the probe is used to audibly trace the wire.

A maintenance worker accidently nicks a bundle of network cables routed to multiple wall jacks in a conference room. Only one of the cable's wires are severed. A technician is tasked with replacing the cable. Which of the following tools would the technician MOST likely use to identify which wall jack connects to the severed cable? --------------------------------------------------------------- Loopback plug Tone generator and probe Cable stripper Multimeter

Tone generator and probe ---------------------------------- A tone generator and probe can be used to identify the wall jack connected to the severed wire. The tone generator can be attached to the severed wire, and the probe will sound when it is brought close to the connected wall jack.

You are an IT technician for your company. One of your employees has a computer that continually reboots when it is powered on. He has asked you to fix it. You suspect that the power supply may be failing. Which of the following is the BEST way to determine whether the power supply is causing the reboots? ------------------------------------------- Listen for POST code beeps to determine the error's cause. Replace the power supply. Verify that the fan on the power supply is spinning. Use a multimeter to test the power supply.

Use a multimeter to test the power supply. ------------------------------------------------ A failing power supply can cause the computer to continuously reboot. For example, pin eight on the power supply connector connects to the power good wire on the motherboard. If power disappears from that wire, the motherboard shuts down. If power quickly reappears on that wire, the system may attempt to come back on by itself, which causes the symptom of continual reboots. Using a multimeter allows you to verify the amount of voltage supplied by the power supply. You could replace the power supply, but it is best to test the original power supply first, as other issues may be causing the reboots. A running fan is not a good indication of a properly functioning power supply, since the fan may be running, but the power supply is not supplying the correct voltage for other components to run properly. Some BIOS may have a POST beep code that can give you a clue about a failing power supply, but this is not a reliable method for determining that the power supply is bad and needs to be replaced, and you may not have spare power supplies on hand to use.