CompTIA Ch 1: 41 - 60

51. Which laptop component can take input from a stylus and convert it into an image on the computer? A. Digitizer B. Touch pad C. Point stick D. Inverter

A. A digitizer is a device that can be written or drawn on, and the content will be converted from analog input to digital images on the computer. Digitizers take input from a user's finger or a writing utensil, such as a stylus.

56. You have a laptop with an ExpressCard/34 slot. Which of the following statements is true regarding installing expansion cards? A. You can only plug in an ExpressCard/34 card. B. You can plug in an ExpressCard/34 card or an ExpressCard/22 card. C. You can plug in an ExpressCard/34 card or an ExpressCard/54 card. D. You can plug in an ExpressCard/34 card or an ExpressCard Universal card.

A. An ExpressCard/34 slot is only 34 mm wide and will only accept a /34 card. There are no ExpressCard/22 cards or ExpressCard Universal cards (there is a universal slot), and the /54 card will be too wide to fit into the slot.

42. You have a laptop with an ExpressCard/34 slot. Which type of device or devices are you unlikely to be able to use as an expansion option in that slot? A. Hard drive B. Sound card C. Network card D. eSATA adapter

A. ExpressCard/34 cards can have a variety of functions. However, they are too small to support expansion options such as 1.8 disk drives, card readers, and CompactFlash readers. For those devices, you will need ExpressCard/54.

50. Your laptop has an internal Mini PCIe expansion slot. The documentation for an expansion card says that it supports Mini PCIe USB 2.0 functionality. At what speed does the expansion card run? A. 480 Mbps B. 2.5 Gbps C. 5.0 Gbps D. 6.0 Gbps

A. Mini PCIe cards running in PCIe 1.0 x1 mode have a maximum speed of 2.5 Gbps. Mini PCIe cards running in USB 2.0 mode have a maximum speed of 480 Mbps, and those running in USB 3.0 or PCIe 2.0 x1 mode have a maximum speed of 5.0 Gbps.

53. Your company is producing posters for an upcoming public relations campaign. The project leader wants to embed information into an NFC tag in the poster. How much information can this tag hold? A. 8 KB B. 144 KB C. 1.4 MB D. 4.4 MB

A. Near-field communication (NFC) is a wireless technology that uses radio frequency (RF) signals with limited range, about 4″ (10 cm). To read an NFC tag in a poster, you would move your phone close to the tag, and the phone would generate a small RF field that would power the target. Data could then be read from the tag, which currently holds up to 8 KB of data.

49. A technician needs to replace a failed laptop hard drive. What are the possible form factors of this hard drive? (Choose two.) A. 1.3″ B. 1.8″ C. 2.5″ D. 3.5″

B, C. Laptop hard drives will be one of two form factors (sizes): 1.8″ or 2.5″. Desktop computers have historically used 3.5″ hard drives.

47. The new model of laptop just purchased by your company has a Universal ExpressCard slot. Which of the following types of cards can you install into that slot? A. ExpressCard/54 only B. ExpressCard/34 and ExpressCard/54 C. ExpressCard/24, ExpressCard/34, and ExpressCard/54 D. ExpressCard/34, ExpressCard/54, and CardBus

B. A Universal ExpressCard host slot is wide enough to fit either an ExpressCard/54 or an ExpressCard/34 adapter; both of them have 26-pin connectors. (Slots designed for an ExpressCard/34 device cannot accommodate its wider cousins.) Universal ExpressCard slots also appear to be able to accept a CardBus adapter, but the card inserts not even an inch before stopping on the internal guide that ensures correct ExpressCard/34 insertion. ExpressCards can also be used to facilitate wireless and cellular connections.

52. What type of wearable technology device is specifically designed to track a user's movements and heart rate and may include features such as GPS? A. Smart watch B. Fitness monitor C. Smart glasses D. Smart headset

B. A fitness monitor is normally worn on the wrist, and it tracks a user's movements and heart rate. Some fitness monitors will be able to track sleep patterns and have a clock, alarm, and other features such as GPS. All fitness monitors have the ability to sync to a device such as a smartphone, laptop, or desktop.

59. Your new laptop has 4 GB system RAM and an integrated video card. The default setting specifies 512 MB of video memory. How much RAM is available for the processor to use? A. 4 GB B. 3.5 GB C. 3 GB D. It's variable.

B. Many laptops use shared video memory, meaning that system RAM is divided up for use between the processor and the video card. On these types of systems, the amount of RAM available for video is configured in the BIOS. Anything reserved for the video card is unavailable to the processor. In this case, subtracting half a gigabyte from 4 GB leaves the CPU with 3.5 GB.

57. You are wearing your smart watch, which allows you to make payments like a credit card. What type of connection technology does this service use? A. Bluetooth B. NFC C. Wi-Fi D. IR

B. Near-field communication (NFC) is a wireless technology that uses radio frequency (RF) signals with limited range, about 4″ (10 cm). NFC can operate in card emulation mode, which lets the device act as a smart card. This is useful for making payments at the site of a merchant who uses NFC.

41. The iPhone 8 and iPhone X use what type of connector for charging? A. Thunderbolt B. Lightning C. ApplePower D. USB-C

B. The iPhone 8 series and iPhone X series still use the proprietary connector called the Lightning connector.

45. You are using a USB flash drive to transfer files from a laptop. You plug the USB drive in and then copy the files to it. What is the recommended way to remove the drive? A. Unplug the drive. B. Use the Safely Remove Hardware icon in the system tray, stop the drive, and then unplug it. C. Close the drive's window in Windows Explorer and unplug it. D. Use the Shut Down Hardware icon in the system tray, stop the drive, and then unplug it.

B. You need to stop the device first (this is good policy even for USB devices) using the Safely Remove Hardware icon in the system tray (it looks like a card and may have a green arrow or green check mark over it, depending on your version of Windows). Highlight the device and click Stop. Once it's stopped, you can unplug it.

43. You have enabled the GPS service in your tablet. What is the minimum number of GPS satellites your tablet needs to be in contact with to determine its location? A. One B. Two C. Three D. Four

C. GPS systems were designed to require multiple satellites. Receivers use a process called triangulation, which they use to calculate the distance between themselves and the satellites (based on the time it takes to receive a signal) to determine their location. They require input from four satellites to provide location and elevation or three to provide location.

46. What is the name of the OS used by the Apple Watch, which was designed specifically for the watch? A. iOS B. OS X mobile C. WatchOS D. Tizen

C. The Apple Watch uses WatchOS. It's similar to iOS (used on iPads and iPhones) but was developed specifically for the watch. Its features are similar to iOS, but it includes features more tailored toward a smaller device.

58. Which laptop display component is capable of discharging energy and causing severe injuries to technicians? A. Screen B. Backlight C. Inverter D. LCD

C. The job of the inverter is to store and convert energy; they have the potential to discharge that energy. They can be dangerous to technicians, so be careful when working with them.

44. You are investigating new laptops for your company. You want the laptop displays to have a wide viewing angle. Which technology is best suited for your needs? A. LED B. CCFL C. IPS D. TN

C. There are two types of LCD technologies listed in the exam objectives: TN and IPS. Twisted nematic (TN) is the older of the two, and it is relatively inexpensive and low power. The issue with TN LCD screens is that when you start viewing them at wider angles, the picture quality suffers greatly. In-Plane Switching (IPS) LCD monitors provide better color representation as well as wider-angle viewing, but they tend to be a bit more expensive and have somewhat slower response times.

54. You want to play video games on your tablet computer. Which accessory would you purchase if you wanted to play the game much like you would on a gaming console? A. Docking station B. Touch pad C. Point stick D. Game pad

D. A good game controller can make your mobile device feel a bit more like a gaming console. Most of the game pads will look like standard console controllers and connect via Bluetooth.

60. Oculus, Samsung, and HTC are manufacturers of what type of wearable technology devices? A. Smart glasses B. Smart headsets C. Smart watches D. VR/AR headsets

D. Oculus VR specializes in virtual reality and alternate reality headsets (VR/AR headsets). Samsung and HTC, while manufacturing smartphones, also produce VR/AR headsets.

48. You have a MacBook Pro computer with a Thunderbolt 3 port. What is the maximum throughput of a device plugged into this port? A. 5 Gbps B. 10 Gbps C. 20 Gbps D. 40 Gbps

D. The first version of Thunderbolt supported 10 Gbps data rates, which is fast. Thunderbolt 2.0 joins two 10 Gbps channels together for 20 Gbps throughput. But the fastest speed available today with Thunderbolt 3 is 40 Gbps.

55. Which laptop expansion port technology was developed by Apple and supports a wide variety of peripheral devices? A. USB B. DisplayPort C. eSATA D. Thunderbolt

D. Thunderbolt was codeveloped by Apple and Intel as an offshoot of the DisplayPort technology. Apple added support for PCIe and launched it in 2011. In terms of versatility, it's really second only to USB. You will find video devices, hard drives (both HDD and SSD), printers, laptop docking stations, audio devices, and PCIe expansion enclosures that use Thunderbolt. Thunderbolt 3 is now compatible with USB-C.