CompTIA A+ Core 1: Domain 1.0 (Mobile Devices) Review Quiz

You are more comfortable working on your laptop as opposed to your 4G tablet. Your laptop is Wi-Fi capable. What would you add to your laptop to allow you to stay connected while traveling?

• Bluetooth

• Wi-Fi Extender

• Cellular card

• GPS

Answer explanation

Adding a cellular card to your laptop would enable you to use the cellular network for communication. Bluetooth would not add any consistent connectivity. A Wi-Fi extender does not have the range to support travel. GPS will only enable you to track your laptop.

You have upgraded your laptop and find that it no longer fits the docking station you used for home to office portability. Which solution would you find most efficient?

• Return laptop with one that fits the dock

• Replace the docking station with a port replicator

• Enable UPnP

• Any of these would be efficient

Answer explanation

Docking stations have been largely replaced in favor of port replicators. A port replicator takes advantage of USB capabilities and does not require the laptop to be locked into the docking station. Returning the laptop would be highly inefficient and finding a new laptop with the correct fit is no simple task. UPnP could work but would require peripheral device upgrades. UPnP could also lead to a potential security risk. So the correct answer is: Replace the docking station with a port replicator.

The internal 802.11b/g Wireless network card on your new laptop needs to be replaced. Which type of device would you expect as a replacement part from the factory?

• USB

• Mini-PCIe

• IEEE1394

• Bluetooth

Answer explanation

The mini-PCIe slot is an internal laptop connection. It is usually accessed through a small access panel. USB and PCMCIA 802.11b/g adapters are available, but these are external devices. The correct answer is Mini-PCIe.

You are at a customer site and have been asked to configure a second monitor on a laptop computer. You go to the display properties and ____________.

Answer explanation

To set up dual monitors in Windows 7 you select the Extend My Desktop check box. This allows both monitors to be treated as a single large workspace. When extended the entire display area can be utilized and you can drag active windows between them seamlessly. The other options given are not available.

You are replacing the CPU in a laptop. You have properly disassembled it to a point where you can see the motherboard. What is your next logical step?

• Remove the board from the case.

• Remove the CPU fan assembly.

• Disconnect video ribbon cables.

• Remove the lid.

Answer explanation

With the motherboard in view, you can see the CPU fan assembly. It will be attached to the motherboard in several places. Be sure you find all of the mount points and do not bend the assembly.

When disconnecting the keyboard ribbon cables from the notebook, which is the best method to use?

• Gently pull the cable straight out without kinking it.

• Gently pull up on the connectors retaining latch.

• Remove the small screw that holds the ZIF lock down.

• Never disconnect these. Simply fold them back and out of your way.

Answer explanation

The keyboard ribbon connectors (and others in the notebook) use a Zero Insertion Force socket to secure the connection. It is loosened by lifting the tabs on either side of the socket, or gently working it loose with a small screwdriver.

Which touch screen technology uses two sheets of glass separated by spacers?

(a)  

Answer explanation

Resistive touch screen technology uses two sheets of glass separated by spacers. When pressure is applied to the top sheet of glass, it bends to make contact with the bottom sheet and type the letter or press the button under the point of contact.

You hibernate your docked laptop at the office to save time when starting it back up at home. When you power it up at home, you discover that while typing emails, some of your keystrokes are misinterpreted by the system. For example, when you type the letter O it appears as a 6 and a P is an *.  What is the quickest way to fix this?

• The Function (Fn) Num Lock is on. Turn it off.

• Restart the Machine.

• In Control Panel assign proper keyboard mapping.

• In Device Manager make sure the correct keyboard is listed. Refresh if necessary.

Answer explanation

The keyboard Num Lock was set to ON by the external keyboard used by the docking station. Hibernation preserved this setting. Although restarting the machine will fix this, it is quicker to simply turn it off.

Which mobile communications protocol allows two portable devices to communicate wirelessly at a range of about 2 inches, supports encryption, and is becoming a very popular mode of sending payments using a smartphone?

• NFC

• Bluetooth

• Local Area Network

• 802.11b

Answer explanation

Near Field Communication (NFC) is the technology behind some of the most popular mobile payment systems in use, including Apple Pay and Android Pay. This is a short-range technology that only works over a limited area, such as holding up your phone to a checkout terminal at a retail store.

Which touch screen technology uses electrodes that sense the conductive properties of skin?

(a)  

Answer explanation

Human skin is capable of conducting electricity. Capacitive touch screens use this trait to execute the action the user wishes to perform.