CompTIA A+ Practice Tests. Docter Quentin. Читать онлайн. Newlib. NEWLIB.NET
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CompTIA A+ Practice Tests. Docter Quentin

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Автор: Docter Quentin
Издательство: John Wiley & Sons Limited
Серия:
Жанр произведения: Зарубежная образовательная литература
Год издания: 0
isbn: 9781119372677
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2.4″ × 2.4″

      112 Which of the following printer types are considered impact printers? (Choose two.)

      A. Laser

      B. Daisy-wheel

      C. Dot-matrix

      D. Thermal

      113 Which type of video display technology does not require a separate display unit and light source?

      A. Plasma

      B. OLED

      C. LED

      D. LCD

      114 Which type of bus architecture provides faster speeds?

      A. Serial (1 bit at a time).

      B. Parallel (8 bits at a time).

      C. They are the same speed.

      D. More information is needed to answer this question.

      115 Which hardware component is responsible for prefetching data or code that the CPU will need to use and storing most recently used data or code?

      A. RAM

      B. SSD

      C. Buffer

      D. Cache

      116 Which two CPU sockets are capable of supporting Intel Core i7 processors? (Choose two.)

      A. LGA1156 (Socket H)

      B. LGA2011 (Socket R)

      C. Socket AM3+

      D. Socket FM2

      117 You are discussing data storage needs with a client who is a videographer and media producer. She stores dozens of large files and needs immediate access to them for editing. What is the most appropriate storage technology for her to use?

      A. SSD

      B. HDD

      C. SD

      D. BD-R

      118 You have a client who wants to build a high-end custom home theater PC. Which two components will you suggest he install in the computer? (Choose two.)

      A. Sound card with surround sound

      B. High-end cooling

      C. Video card with HDMI outputs

      D. Multicore processor

      119 You are searching for a new monitor on the Internet and find a used digital LCD monitor for sale. What are the two most likely types of connector you will find on this monitor? (Choose two.)

      A. Composite

      B. DVI-D

      C. HDMI

      D. VGA

      120 A technician needs to purchase a new laptop for a manager. The manager has had several laptops fail and wants her new one to have as few components as possible to reduce the risk of failure. Which type of light source technology does not require an inverter and therefore is a better choice?

      A. OLED

      B. Plasma

      C. Fluorescent

      D. LED

      121 Which of the following are typical formats supported by virtual printing? (Choose three.)

      A. Print to PDF

      B. Print to XPS

      C. Print to DOC

      D. Print to image

      122 A bidirectional PCIe 1.1 x1 link provides how much data throughput?

      A. 250MBps

      B. 500MBps

      C. 1GBps

      D. 2GBps

      123 Which component in a laser printer is responsible for heating up and melting the toner into the paper to create a permanent image?

      A. Transfer corona assembly

      B. Pickup rollers

      C. Exit assembly

      D. Fuser assembly

      124 During which step in the laser printer printing process does a wire or roller apply a strong, uniform negative charge to the surface of the imaging drum?

      A. Charging

      B. Conditioning

      C. Exposing

      D. Transferring

      125 You are installing two new RAM modules into a single channel of a dual-channel motherboard. Which of the following is true?

      A. Both RAM modules need to have the same parameters.

      B. The RAM modules can be different sizes but must be the same speed.

      C. The RAM modules can be different speeds but must be the same size.

      D. The RAM modules can have different speeds and sizes, as long as they are the same type.

      126 Which of the following printer components is not found in a laser printer?

      A. Fuser assembly

      B. Imaging drum

      C. Transfer roller

      D. Carriage motor

      127 What type of common printer can potentially release harmful ozone into the atmosphere and therefore may contain an ozone filter?

      A. Laser

      B. Inkjet

      C. Thermal

      D. Impact

      128 There are four servers in your server closet. You need to access each of them, but not at the same time. Which device will allow you to share one set of input and output devices for all four servers?

      A. Touch screen

      B. Docking station

      C. Set-top controller

      D. KVM switch

      129 A user on your network has an older laser printer with no Ethernet connection. It’s connected to his computer with a parallel cable. He has shared it on the network for others to use. Now, he wants no part of the printer, but others still need to use it on the network. What would be the best upgrade to install in this printer to allow others to send print jobs to it directly over the network?

      A. A network card

      B. An integrated print server

      C. TCP/IP printing

      D. AirPrint

      130 A technician needs to perform maintenance on an inkjet’s dirty paper pickup rollers. What should she use to clean them?

      A. Rubbing alcohol

      B. Mild soap and water

      C. A dry lint-free cloth

      D. Compressed air

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<p>112</p>

B, C. Daisy-wheel and dot-matrix printers use print heads that strike an ink ribbon, which presses up against the paper to make an image. Therefore, they are impact printers. Laser printers use a drum to create the image, and thermal printers use heat.

<p>113</p>

B. OLEDs create the image in an OLED display and supply the light source, so there is no need for a backlight with its additional power and space requirements, unlike in the case of LCD or plasma panels.

<p>114</p>

A. Although serial might sound slower than parallel, modern technology has made the serial bus much faster than parallel bus systems.

<p>115</p>

D. Only the most recently used data and code or that which is expected to be used next is stored in cache. Cache is much smaller and faster than RAM.

<p>116</p>

A, B. Sockets that support Intel processors are currently named starting with the letters LGA, such as LGA1156 and LGA2011. Socket names that start with AM or FM will support AMD processors and not Intel processors.

<p>117</p>

B. A standard hard disk drive (HDD) will provide her with the highest capacity of the four options and also give her immediate access. A solid-state drive (SSD) is fast but does not have as much capacity. Secure Digital (SD) is a memory card format and does not offer the capacity or immediacy she needs. BD-R is a Blu-ray Disc format. It has good storage capabilities, but not the immediacy for editing.

<p>118</p>

A, C. A home theater PC (HTPC) needs to maximize the audio and video experience. It won’t do a lot of processing or data management, so an upgraded processor or RAM is unneeded. Install a great sound card, a video card with multiple HDMI outputs, and a TV tuner card. (HDMI is capable of supporting 7.1 surround sound, so you may choose to buy one expansion card capable of handling both functions.) Some HTPCs come in a compact form factor, which is just a small case.

<p>119</p>

B, C. Digital monitors will have a digital interface, such as DVI-D, HDMI, or miniHDMI. Composite connectors are rarely used on monitors, and VGA is analog, not digital.

<p>120</p>

D. There is no need for laptops with LED displays to convert the DC power coming into the laptop to the AC needed to power traditional fluorescent backlights because LEDs operate on DC power just like the rest of the laptop. Therefore, systems with LED backlights have no inverter board.

<p>121</p>

A, B, D. The four virtual printing options are print to file, print to PDF, print to XPS, and print to image.

<p>122</p>

B. There are four major versions of PCIe currently specified: 1.x, 2.x, 3.0, and 4.0. For the four versions, a single omnidirectional lane operates at a data rate of 250MBps, 500MBps, approximately 1GBps, and roughly 2GBps, respectively. A bidirectional slot doubles the data rate.

<p>123</p>

D. Laser printers incorporate a fuser assembly, which uses two rollers that apply pressure and heat to fuse the plastic toner particles to the paper.

<p>124</p>

A. During the charging step, the charging corona uses a high voltage to apply a strong, uniform negative charge (around –600VDC) to the surface of the imaging drum.

<p>125</p>

A. When installing dual-channel RAM, be sure that the RAM modules both have the same parameters. In some cases, you might even need to make sure they come from the same manufacturer.

<p>126</p>

D. Carriage motors are components in inkjet printers. Laser printer components include a fuser assembly, imaging drum, transfer belt, transfer roller, pickup roller, separator pads, and a duplexing assembly.

<p>127</p>

A. Laser printer uses various high-voltage biases inside the case, and high voltages can create ozone.

<p>128</p>

D. The purpose of a KVM switch is to allow you to have multiple systems attached to the same keyboard, monitor, and mouse. You can use these three devices with only one system at a time, and the device will have a dial or buttons to allow you to switch between systems.

<p>129</p>

B. It sounds like this printer needs to manage its own print jobs; therefore, it probably needs to be its own print server. Installing an integrated print server with a network connection will probably do the trick.

<p>130</p>

B. Clean pickup rollers (and other rubber rollers) with mild soap and water and not alcohol. Alcohol can dry out the rollers, making them brittle and ineffective. A dry cloth will not remove the dirt or debris, and compressed air would just blow the debris into other internal printer components.