CompTIA A+ Practice Tests. Docter Quentin
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Название: CompTIA A+ Practice Tests
Автор: Docter Quentin
Издательство: John Wiley & Sons Limited
Жанр: Зарубежная образовательная литература
isbn: 9781119372677
isbn:
45 Which type of LCD panel is considered to have the best color representation at wider angles of viewing?
A. TN
B. IPS
C. LED
D. Plasma
46 You have a user who needs recommendations for installing a home server PC. She wants her family to be able to share files and videos on their home network. She also wants her data to be protected in the event of a hard drive failure. Which two components do you recommend she include?
A. Dedicated print server
B. RAID array
C. Gigabit NIC
D. Dual processors
47 Your motherboard does not support up-plugging for PCIe adapter cards. Which of the following statements is true?
A. You can’t put an x8 card into an x16 slot.
B. You can put an x8 card into an x16 slot, but it will run at x1 speed.
C. You can put an x8 card into an x16 slot, and it will run at x8 speed.
D. You can put an x8 card into an x16 slot, and it will run at x16 speed.
48 Which system component enables the use of Secure Boot technology?
A. BIOS
B. UEFI
C. AMI
D. SATA
49 Which type of DIMM has 184 pins?
A. DDR
B. DDR2
C. DDR3
D. SODIMM
50 Which CPU technology allows for the assignment of two logical cores for every physical core present?
A. Multicore
B. 32-bit vs. 64-bit
C. Integrated GPU
D. Hyperthreading
51 On what type of printer are you most likely to use tractor feed paper?
A. Dot-matrix
B. Thermal
C. Laser
D. Inkjet
52 Which type of flash memory is capable of being embedded on the circuit board of mobile devices?
A. xD
B. miniSD
C. microSD
D. eMMC
53 Which motherboard form factor is common in desktop computers and measures 12″ × 9.6″?
A. ATX
B. MicroATX
C. Mini-ITX
D. ITX
54 What two components within an inkjet printer are responsible for moving the print head into proper position?
A. Carriage and belt
B. Roller and belt
C. Carriage motor and roller
D. Carriage motor and belt
E. Belt motor and roller
55 Your company just hired a video producer to create exciting videos for the sales team. For her custom computer, which two upgrades are the most useful? (Choose two.)
A. Video card
B. CPU
C. NIC
D. Hard drive
56 You need to enable virtualization support for one of your Windows 8–based desktop computers using an Intel Core i5 CPU. Which two of the following must be true? (Choose two.)
A. The CPU must have Intel VT.
B. The CPU must have Intel VR.
C. You need to enable virtualization in Windows 8.
D. You need to enable virtualization in the BIOS.
57 Your business employs four graphic designers who need new computers. These designers create graphical content such as advertisements, posters, and full-color brochures. Which of the following components is the least important to enhance in their custom-configured machines?
A. Hard drive
B. Processor
C. Video card
D. RAM
58 An analog LCD monitor is most likely to have what type of connector?
A. DisplayPort
B. RCA
C. VGA
D. BNC
59 What is the name of the measure that specifies how many times an image can be redrawn on a computer screen, in one second?
A. Refresh rate
B. Frame rate
C. Native resolution
D. Aspect ratio
60 Which PC peripheral connection type operates at 20Gbps bandwidth, with a port that provides 18V and 9.9W of power?
A. FireWire 800
B. USB 3.0
C. eSATA
D. Thunderbolt
B. The two most popular methods of manufacturing LCD panels are twisted nematic (TN) and in-plane switching (IPS). Of the two, IPS is regarded as having the best color representation in all angles, while TN is faster and less expensive. LED and plasma are not types of LCD panels.
B, C. A home server PC should be able to handle media streaming, as well as file and printer sharing. A dedicated print server is not likely needed, though, as the operating system can function as a print server. A gigabit NIC will be helpful to manage the network traffic, and a RAID array can help protect against hard drive failure.
B. The x8 card won’t completely fill the x16 slot, but it will work at x8 speeds of up- plugging is supported by the motherboard. Otherwise, the specification requires up-plugged devices to operate at only the x1 rate.
B. Secure Boot is an option enabled in system firmware. BIOS is not technically advanced enough to manage Secure Boot, but its successor UEFI is.
A. DDR has 184 pins, DDR2 and DDR 3 have 240 pins, and SODIMMs can have 72, 100, 144, 200, or 204 pins.
D. Hyperthreading-capable processors appear to the operating system to be two processors. As a result, the operating system can schedule two processes at the same time on the same physical core.
A. Dot-matrix printers are impact printers and typically require paper that always feeds at a consistent rate. To achieve this, the paper will have holes on the outside edges, which is fed into the printer using a tractor feed mechanism.
D. Embedded MultiMediaCard (eMMC) can be permanently embedded on the circuit board of a cheaper or smaller mobile device. All of the other flash memory standards, such as CompactFlash, xD, miniMMC, and microMMC are designed to be removable.
A. ATX motherboards are common in desktop computers and measure 12″ × 9.6″. They are the largest motherboards commonly used in personal computers today.
C. The motor that makes the print head carriage move is also often called the carriage motor or carriage stepper motor. It has a belt attached to it, the carriage belt, which moves the print head carriage back and forth.
A, D. For an audio/video editing workstation, you should maximize the audio and video capabilities, including having at least two large monitors. Videos also take a lot of disk space, so significant storage space is required.
A, D. Intel’s Virtualization Technology (Intel VT) is needed to support virtualization. It’s enabled in the BIOS, not the operating system.
A. Graphic design (or CAD/CAM) workstations require solid CPU power, RAM, and a high-end video card. Hard drive storage is the least important upgrade for these types of users.
C. The most common analog video connector is a VGA connector.
A. Refresh rate defines the vertical scan frequency of a monitor and determines how many times, in one second, an image can be redrawn on the screen. Many LCD monitors have a fixed refresh rate.
D. Thunderbolt v1 and v2 both provide 20Gbps of data bandwidth. In addition, Thunderbolt ports power the attached peripherals with 18V and 9.9W of power.