Test Bank for CompTIA A+ Guide to IT Technical Support, 10th Edition

Test Bank for CompTIA A+ Guide to IT Technical Support, 10th Edition Multiple Response 1. A technician has determined that a laptop keyboard will need to be removed in order to replace the laptop’s CPU cooling fan. Which of the following steps will most likely be required before the technician can remove the keyboard from the laptop? (Select TWO.) a. The keyboard backlight will need to be toggled off by using the appropriate Fn keys. b. The keyboard cable(s) will need to be disconnected from the ZIF socket(s). c. The keyboard cable will need to be disconnected from the mini-PCIe slot. d. The keyboard bezel will need to be removed. e. The technician will need to remove the display assembly and system board. ANSWER: b, d FEEDBACK: a. Incorrect. The keyboard backlight component is integrated into the laptop keyboard that illuminates the keys. The laptop will be powered off when the keyboard is removed, making this choice irrelevant. b. Correct. Typical laptop keyboards are connected to the system board via one or more ribbon cables. The system board end of the ribbon cable utilizes ZIF (zero insertion force) sockets. These cables will need to be disconnected prior to removal of the keyboard. c. Incorrect. Laptop computers do not use mini-PCIe slots for keyboard connectivity. The miniPCIe slot is used for wireless and wired network adapters, SATA controllers, FireWire cards, USB cards, and more. d. Correct. The keyboard bezel is a part of the plastic covers of a laptop and is the cover that surrounds the top of the keyboard. For some laptops, the case top covers the keyboard. Regardless of whether the cover is the bezel or the case top, it will need to be removed first in order to remove the keyboard. e. Incorrect. The keyboard does connect to the system board; however, the system board does not need to be removed in order to remove the keyboard. Likewise, the display adapter does not need to be removed prior to removing a laptop keyboard. 2. Molly, an end user, connects an external monitor, external keyboard and mouse, and a wired network cable to her laptop while working in the office. She leaves the office frequently to meet with customers and takes the laptop with her. Disconnecting and reconnecting these external connections has become inconvenient. Which of the following devices will allow the user to disconnect and reconnect the laptop to the external connections with the least amount of effort? (Select TWO). a. USB to RJ-45 dongle b. Expansion card c. ZIF connector d. Port replicator e. Docking station ANSWER: d, e FEEDBACK: a. Incorrect. A dongle is used to add an external port to a computer. For example, the USB to RJ45 dongle connects to the laptop’s USB port and provides an RJ-45 Ethernet network connection. This device will provide only an external wired network connection. b. Incorrect. An expansion card for a modern laptop is typically a mini-PCIe connector and is accessed by removing an access cover on the bottom of the laptop or by removing the bottom cover. An expansion card will provide additional connectivity but not the convenience of connecting and disconnecting external devices. Page 3 c. Incorrect. ZIF stands for zero insertion force and is an internal connector used in a laptop to connect the keyboard and touchpad to the motherboard. d. Correct. A port replicator typically connects to a laptop using a single USB port and provides the convenience of connecting external connections such as monitors, USB devices, and network patch cables. The port replicator isn’t proprietary, meaning it is designed to work with any laptop with an open USB port. e. Correct. A docking station provides the same functionality as that of a port replicator but is typically proprietary, meaning it is designed for a specific brand and model of laptop. Older docking stations are connected to a laptop through a proprietary docking port on the bottom of the laptop. 3. 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). a. Provide the customer with a laptop to use while the failing unit is being repaired. b. Document and label the location of the screws and cables before removing them. c. Compare the system board display connections with a properly functioning laptop. d. Organize and place all parts and screws and in one place. e. Charge the laptop battery pack so it is ready to return to the customer with a full charge. ANSWER: b, d FEEDBACK: a. Incorrect. Providing a loaner computer to the customer while hers is being repaired is often done but will not help the technician complete the work in a timely fashion. b. Correct. While most desktop computers contain only one or two types of screws, a laptop may have a variety of screws and washers in various sizes and lengths. It is imperative that a technician document and label screws and cables before removing them. Inserting a screw that is too long may penetrate a cable or circuit board and cause damage. Inserting a screw that is the wrong size can also strip the threads, causing the correct-sized screw not to tighten properly. Documenting and labeling locations will assist in reassembling the unit. c. 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. d. 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. e. Incorrect. Making sure the battery pack is fully charged after a repair is proper etiquette and should be done. A good time to charge the battery is during the final testing and verification of system functionality. However, this will not necessarily help the technician complete the repair. 4. What type(s) of port transmits both digital audio and digital video with a single connector? Select all that apply. a. DisplayPort b. DVI c. HDMI d. VGA e. SPDIF ANSWER: a, c FEEDBACK: a. Correct. DisplayPort transmits both digital video and audio, but not analog transmissions. DisplayPorts are slowly replacing older ports, such as VGA and DVI ports. b. Incorrect. DVI or Digital Video Interface ports transmit both digital and analog video. DVI ports do not transmit audio signals. DVI ports are slowly being replaced by DisplayPorts. c. 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 Page 4 equipment and as ports on both laptop and desktop computers. d. Incorrect. VGA or Video Graphics Array ports, often known as DB15 ports, transmit analog video only. VGA ports do not transmit audio signals. VGA ports are commonly found on older computers and all older monitors. DisplayPorts are slowly replacing VGA ports. e. Incorrect. An SPDIF or Sony-Philips Digital Interface is a sound port that supports digital audio at the highest quality. Only audio signals are transmitted. SPDIF connections are commonly found in home theater audio systems. 5. What two different types of firmware may be used on motherboards? a. BIOS b. CEFI c. UEFI d. CMOS ANSWER: a, c FEEDBACK: a. Correct. Basic Input/Output System or BIOS is the older firmware that is responsible for managing essential devices (such as the keyboard, mouse, hard drive, and monitor) before the OS launches, starting the computer, and managing motherboard settings. b. Incorrect. CEFI is not a term used in computing. c. Correct. Unified Extensible Firmware Interface or UEFI is the newer firmware that is responsible for managing essential devices (such as the keyboard, mouse, hard drive, and monitor) before the OS launches, starting the computer, and managing motherboard settings. d. Incorrect. Complementary Metal Oxide Semiconductor or CMOS holds the firmware and other basic information used by the motherboard.