Chapter 1 Review

Maria has a laptop with a motherboard that is beyond repair. She comes to your computer repair shop and requests that you replace the motherboard. What are two of the most likely responses you will give her?

Buy a new laptop because replacing it will be more cost-effective than repairing it. ???(don't say how long or cost)

What type(s) of port transmits both digital audio and digital video with a single connector? Select all that apply.

DisplayPort Correct. DisplayPort transmits both digital video and audio, but not analog transmissions. DisplayPorts are slowly replacing older ports, such as VGA and DVI ports. HDMI Correct. HDMI or High-Definition Multimedia Interface ports transmit digital video and audio, but not analog transmissions. HDMI connections are commonly found in home theater equipment and as ports on both laptop and desktop computers. nt vga

An employee informs the help desk the laptop they are using cannot update the login credentials when they plug it in to the company's wired network. Wireless connectivity is fine, but the login credentials cannot be updated using Wi-Fi. What is a possible action the help desk could take to troubleshoot the problem?

Ping the loopback address Incorrect. Ping is used to verify network connectivity. However, pinging the loopback address (127.0.0.1) is used to verify the networking protocols are installed and working properly on the laptop. It does not transmit any data so it will not serve as an effective method to test the network port on the laptop.

A network technician is on a service call at a remote residential location. He forgot to take some Ethernet cables and needs to make one. What type of connector will he need on both ends of the cable?

RJ-45 Correct. A RJ-45 connector connects a network cable to a network port.

Alexa is asked to upgrade the memory on a desktop computer. Which component will she replace?

SSD Incorrect. SSD is a solid-state drive. It provides persistent (not temporary) storage to store the operating system, program files, and user data.

What are two resources that may be useful in disassembling a laptop computer?

Service manual Correct. Since laptop computers are unique to manufacturers and models, a service manual will be useful for disassembly. maybe User manual

What is the very first step that should be taken when performing work with a computer?

You should power down the system and unplug it. Incorrect. Powering down the system and unplugging it is the second step.

A user called to inform you that the laptop she purchased yesterday is malfunctioning and will not connect to her wireless network. You personally checked to verify that the wireless worked properly before the user left your office. The user states she rebooted the computer several times but the problem still persists.Which of the following is the first step you should take to assist the user in resolving this issue?

Have the user press the appropriate function key combination to enable the wireless radio and then attempt to connect to the wireless network. Correct. Modern laptop computers provide an easy method of toggling the Wi-Fi, GPS, and cellular radios on and off by means of the keyboard function keys. For example, to toggle the Wi-Fi radio on/off, the user may be required to depress and hold the Fn key and then press F5.

A technician is building a custom gaming computer for a customer. In what order should the technician install the main components?

If possible, it is best to install the motherboard just before the expansion cards to prevent accidental damage to the motherboard.

You are troubleshooting a laptop with multiple sticking keys that result in misspelled words while the user types. Other than several sticking keys, the laptop appears to be functioning properly. You have cleaned the keyboard with compressed air, but the problem persists. After removing one of the key tops, it becomes apparent that a liquid was spilled into the keyboard. Which of the following is the next step in resolving the issue of sticking keys?

Clean the keyboard keys with a contact cleaner.

You are helping a friend build a computer with a modern motherboard that is compatible with the ATX form factor. What type of power supply should you use?

One with a 24-pin power connector Correct. The 24-pin P1 connector is the main motherboard power connector used today.

Orlando's company is upgrading their networking equipment and gave him an older enterprise grade router. He wants to configure it using an old computer he found in his garage. What type of serial cable will most likely fit his old computer?

A cable that will plug into the DB9 port Correct. 9-pin ports are called DB9 or serial ports. Serial ports have been largely replaced by USB ports, but can still be found on routers and other hardware. Most older desktop computers and many older laptops have/had a DB9 serial port.

The original P1 connector had 20 pins, why did the development of PCIe induce the adoption of a 24-pin P1 connector?

ATX specification 1.1 supports PCIe and calls for additional power requirements Incorrect. ATX 1.1 does not support the additional power requirements of PCIe and does not call for a 24-pin P1 connector; ATX 2.2 does.

Your company sells hundreds of large storage disk arrays every year that can be configured locally using a dedicated laptop. You travel between many customer sites providing maintenance and support to these laptops. It is your responsibility to ensure you have the necessary FRUs as you travel from site to site. At the very least, what type of FRUs will you keep on-hand?

Memory modules, hard drives, keyboards, and wireless card Correct. FRUs are field replaceable units. These are internal devices that can be replaced in the field with relative ease if they become defective.

A technician needs to service a laptop computer that is experiencing an intermittent problem with the display.Which of the following will be most effective at helping the technician complete the work in a timely and efficient manner? (Select two.)

Organize and place all parts and screws and in one place. Correct. After documenting and labeling the location of the parts and screws, the technician needs to organize them and keep them in one place. Doing so will assist in reassembling the unit. Compare the system board display connections with a properly functioning laptop. Incorrect. If a laptop is disassembled without documenting the location of cables and connectors, this choice may be an option. The question does not state that the unit was already disassembled.

What two devices in a computer should be considered "black boxes," and should never be opened due to risks involving charged capacitors?

Power supply Correct. The power supply may have charged capacitors and contain enough power to kill you, so you should never open it unless you have been specifically trained. This is why it is referred to as a "black box." Monitor

You suspect your computer is overheating because your system sometimes restarts or turns off by itself. At other times the 32 inch monitor turns blue, and the system remains unresponsive until you manually restart it. What relatively quick measure can you take to try to fix the problem?

Use a can of compressed air to blow out the dust Correct. The buildup of dust inside a computer can cause the computer to overheat. Use a can of compressed air to gently blow out the dust inside the computer and air vents.

You replace an internal drive that is only used to backup data on a computer. Before you install the case cover, you power on the computer and observe the disk drive lights are not blinking. You suspect it may not be receiving power, but cannot find the power supply tester. How can you quickly verify whether power is being supplied to the disk drive?

Use a multimeter Correct. You can use a multimeter to verify the appropriate voltage level is detected on the connector used to supply power to the drive.

Which statement best describe when you would need to use a Thunderbolt 3 port as opposed to a DisplayPort or an HDMI port?

When the system is missing a DVI and/or VGA port to transmit video and audio signals Incorrect. DVI can transmits digital and analog video. VGA can only transmit analog video. Neither one can transmit audio or power.

When is it okay to touch the inside of a computer that is turned on?

When you are wearing a wrist strap Incorrect. Never touch the inside of a computer that is turned even if you are wearing a wrist strap to avoid electrical shock. The wrist strap helps control static but will not prevent an electric shock.