Hardware (5) Flashcards

1
Q

You have been asked to purchase new RAM for three workstations. The workstations call for DDR3 1600 chips. What throughput will these modules support?

3200 Mbps

6400 Mbps

12800 Mbps

A

12800 Mbps

The number designation of 1600 in DDR3–1600 indicates an FSB speed of 1600 MHz. To find the throughput, multiply the FSB speed by 8

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2
Q

Historically, which display type has been preferred to watch fast-motion programs such as sporting events?

Plasma

Fluorescent

LCD

A

Plasma

The refresh rate for plasma displays has always been in the 600 Hz range, which is 10 times the standard refresh rate of 60 Hz, thus ensuring fluid video motion. The result is a display that produces the state of the art in video motion fluidity

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3
Q

A technician needs to purchase new RAM for a motherboard. The motherboard specifications call for 400 MHz DDR2 RAM. Which RAM modules should the technician use?

PC3200

PC2-3200

PC2-6400

A

PC2-3200

DDR2, using a 100 MHz actual clock, transfers data in four operations per cycle (effective 400 MHz FSB) and 8 bytes per operation, for a total of 3200 MBps. DDR2 calls these modules PC2–3200

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4
Q

On your network, users want to print easily from their iPads and iPhones. Which service supports this?

Bonjour

AirPrint

TCP printing

A

AirPrint

iPads and iPhones can automatically detect AirPrint-enabled printers on their local network and print to them without requiring the installation of a driver

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5
Q

You have a new computer that needs to communicate with other computers on a wireless network. What type of expansion card do you need to install?

WAP

NIC

KVM

A

NIC

To communicate with other computers on a network, you need a network interface card (NIC). A wireless access point (WAP) is a wireless hub that many wireless devices communicate with, and WPA is a wireless security standard. A KVM switch allows you to have multiple systems attached to the same keyboard, video, and mouse. Other types of expansion cards (that could use the same slot as a NIC) include video cards, sound cards, storage cards, TV tuner cards, and riser cards

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6
Q

The WUXGA video standard, running at a resolution of 1920x1200, operates at what aspect ratio?

5: 4
16: 9
16: 10

A

16:10

A 1920×1200 resolution is a 16:10 aspect ratio. If you take the second number (1200) and multiply it by 1.6, you get 1920

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7
Q

When printing, which component is responsible for converting the data being printed into the format that the printer can understand?

Printer driver

Printer feeder

Printer spooler

A

Printer driver

The printer driver uses a page-description language (PDL) to convert the data being printed into the format that the printer can understand. The driver also ensures that the printer is ready to print

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8
Q

Which of the following statements best describes the function of a typical power supply fan?

It cools the power supply by blowing in air from outside the case

It cools the power supply by blowing hot air out the back of the power supply

It cools the computer by pulling hot air from inside the case, through the power supply, and blowing it out the back of the power supply

A

It cools the computer by pulling hot air from inside the case, through the power supply, and blowing it out the back of the power supply

The power supply fan is used to cool the power supply. In addition, this fan draws air from inside the case into vents in the power supply. This pulls hot air through the power supply so that it can be blown out of the case

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9
Q

A technician needs to install a new hard drive for her client. Access speed is far more important to this client than disk space. What type of hard drive is best suited for this client?

SSD

HHD

BD-R

A

SSD

A solid-state drive (SSD) is the best choice for a hard drive when access speed is the most important characteristic. A conventional magnetic hard disk drive (HDD) is slower. Secure Digital (SD) is a memory card format, not a hard drive type. BD-R is a Blu-ray Disc format

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10
Q

Serial and Parallel ATA port communication to other components on a motherboard is managed by what?

Northbridge

Southbridge

Frontside bus

A

Southbridge

The Northbridge is responsible for managing high-speed peripheral communications. The Southbridge manages slower onboard peripherals such as PS/2, parallel, serial, and Serial ATA and Parallel ATA

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11
Q

What is the maximum data rate for a USB 2.0 connection?

12 Mbps

480 Mbps

5 Gbps

A

480 Mbps

USB 1.0 supports 12 Mbps. In the following standards, USB 2.0 supports 480 Mbps, USB 3.0 supports 5 Gbps, and USB 3.1 Gen 2 supports 10 Gbps

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12
Q

A technician has been asked to install and configure a RAID-5 array in a working computer that contains one hard drive. How many additional hard drives, at a minimum, does he need to bring with him to the job?

One

Two

Three

A

Two

RAID-5 arrays require a minimum of three hard drives. Since the computer already has one, he therefore needs two more

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13
Q

You need to increase network security. A consultant suggests that you install a peripheral device to scan user fingerprints as a requirement to log in. What type of device will you install?

Scanner

Digitizer

Biometric device

A

Biometric device

Any device that measures one or more physical or behavioral features of an organism is considered a biometric device. Biometric devices include fingerprint scanners, retinal and iris scanners, voice recognition devices, facial recognition devices, and others

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14
Q

Which CPU architecture term describes a CPU with multiple physical processor dies in the same package?

Multicore

64-bit

Integrated GPU

A

Multicore

A processor that exhibits a multicore architecture has multiple completely separate processor dies in the same package. The operating system and applications see multiple processors in the same way that they see multiple processors in separate sockets

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15
Q

Which of the following optical disc standards provides the highest capacity?

DVD-R SS, SL

DVD-R DS, SL

DVD-R SS, DL

A

DVD-R DS, SL

All are digital video disc (DVD) technologies. A single-sided, single-layer (SS, SL) DVD provides about 4.7 GB of storage. A dual-sided (DS) disc will double that capacity to 9.4 GB. Adding a second layer, or dual-layer (DL), adds more capacity, but the technology does not double the capacity of a single layer. A single-sided, dual-layer (SS, DL) disc has capacity of about 8.5 GB

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16
Q

Your company recently shipped five desktop computers from Germany to the United States. After switching the power cord to an American-style plug, you try to power one on and it doesn’t work. You try the others and none of them power on either. What is the most likely cause?

All the computers were damaged during shipping

German power supplies work only with German power cords

The power supply voltage switch needs to be moved

A

The power supply voltage switch needs to be moved

Many power supplies have a two-position slider switch called a dual voltage switch. It can be set for 110–120 V or 220–240 V, depending on what local power specifications are

17
Q

What are the dimensions of a mobile-ITX motherboard?

  1. 6” x 9.6”
  2. 7” x 6.7”
  3. 4” x 2.4”
A

2.4” x 2.4”

MicroATX motherboards are a 9.6″ square, and mini-ITX motherboards are a 6.7″ square. Pico-ITX motherboards are 3.9″ × 2.8″, and mobile-ITX motherboards are 2.4″ square

18
Q

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

Laser

Daisy-wheel

Dot-matrix

Thermal

A

Daisy-wheel

Dot-matrix

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

19
Q

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

OLED

LED

LCD

A

OLED

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

20
Q

Which type of bus architecture provides faster speeds?

Serial (1 bit at a time)

Parallel (8 bits at a time)

They are the same speed

A

Serial (1 bit at a time)

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

21
Q

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

SSD

Buffer

Cache

A

Cache

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

22
Q

A small company discovers a legacy wired serial printer in storage. The boss would like to utilize the printer through device sharing on the network. What is a possible configuration to accomplish the boss’s goal?

Purchasing a powerful USB hub

Connecting the printer to the network directly

Purchasing a RS232 to RJ45 converter

A

Purchasing a RS232 to RJ45 converter

A device converting RS232 communication to RJ45 might allow someone connect the printer’s serial port to the wired network

23
Q

Which of the following directly helps ensure data privacy on the system?

Employing user authentication on the device

Keeping backups of critical data

Purchasing a strong device case

A

Employing user authentication on the device

Employing user authentication on the device directly contributes toward confidentiality. Backups, a surge protector and a strong device case help toward availability of the data