Chapt 2 Flashcards
You are installing a new graphics adapter in a Windows 10 system. Which of the following expansion slots is designed for high-speed, 3D graphics adapters?
USB, NVMe, PCI, PCIe
D. Although technically PCI could be used for graphics adapters, PCIe supports high‐speed, 3D graphic video cards. PCIe offers better performance than older graphics adapters. USB can stream video, but it is not used for attachment of internal graphics adapters. NVMe is an SSD communications interface.
You need to install a new hard drive into a desktop computer. Which of the following is not one of the three major components of a hard disk drive system?
Drive interface Disk controller Hard disk Host adapter
drive interface. A conventional hard disk drive system consists of the hard disk and its often‐integrated controller as well as a host adapter to gain access to the rest of the computer system. The drive interface is a common component of the controller and host adapter.
You install a new NIC for a user, and he asks what it does. Which of the following best characterizes the functions of this device?
Multimedia Communications Input/Output Storage
communications. A network interface card (NIC) is used as a communications device. It enables the computer to talk to other computers on a network. It does not provide multimedia, input/output (such as a USB port does), or storage capabilities.
A client wants to ensure that their server does not lose power if their power supply fails. Which of the following best describes the type of power supply needed in this situation?
a) A power supply that provides twice as much wattage than what is needed to power system components
b) A power supply that provides a voltage output selector
c) A modular power supply
d) A redundant power supply
D. To protect against a power supply failure, use a redundant power supply, which is basically two PSUs in one unit. More wattage will not help if the power supply fails. There are no voltage output selectors on PSUs. There are voltage input switches on some but that wouldn’t help in this case. A modular power supply has removable and attachable cables to support a variety of peripherals.
A client is looking for a desktop storage technology that provides the fastest possible data transfers. Which technology should you recommend?
SATA NVMe 10,000 rpm 15,000 rpm
NVMe. The fastest SSD communications interface is NVMe. SATA 10,000 rpm and 15,000 rpm refer to conventional hard drive spin rates, and conventional hard drives will always be slower than SSDs.
You are choosing an optical drive format for a client. Which optical disc format supports a data capacity of 25 GB?
a) Double-sided, double-layer DVD+R
b) Single-sided, single-layer Blu-ray Disc
c) Double-sided, single-layer DVD-R
d) Double-sided, single-layer DVD+R
B. Blu‐ray discs have a single‐sided, single‐layer capacity of 25 GB. A double‐sided, single‐layer DVD can store about 9.4 GB, and a double‐sided, double‐layer DVD can store about 17.1 GB.
Which of the following best describes the concept of hot-swappable devices?
a) Power does not need to be turned off before the device is inserted or removed.
b) The device can be removed with power applied after it is properly stopped in the operating system.
c) Care must be taken when swapping the device because it can be hot to the touch.
d) The device can be swapped while still hot, immediately after powering down the system.
A. Hot‐swappable devices can be removed while the power to the system is still on. Warm‐swappable devices need to be stopped in the operating system before being removed. The term has nothing to do with the heat level of the device.
Of the following voltage pairings, which one accurately represents the input and output, respectively, of power supplies and AC adapters?
a) AC in, AC out
b) DC in, DC out
c) AC in, DC out
d) DC in, AC out
C. Power supplies and AC adapters use standard wall outlets for an input of AC voltage, which they convert to the DC voltages required by the components to which they supply power.
What are the output voltages that have been commonly produced by PC power supplies over the years? (Choose five.)
+3.3VDC, –3.3VDC, +5VDC, –5VDC,
+12VDC, –12VDC, +110VDC, –110VDC
+3.3VDC, +5VDC, –5VDC, +12VDC, –12VDC.
A PC’s power supply produces +3.3VDC, +5VDC, –5VDC, +12VDC, and –12VDC from a 110VAC input.
You are installing a new power supply in a desktop computer. Which of the following statements about power supplies is true?
a) You must make sure that the voltage selector switch on the back of the power supply is switched to the lower setting if the computer is going to be used in Europe.
b) SATA hard drives most often use the same type of power connector that PATA hard drives use.
c) Power supplies require a 20-pin to 24-pin motherboard adapter to supply power to ATX-based motherboards.
d) Power supplies convert AC input to DC output.
D. PC power supplies accept alternating current (AC) as input and produce direct current (DC) for the internal components. Europe requires that the voltage selector switch be set at the higher setting. SATA drives most often use a specific power connector that is not compatible with the Molex connector used by PATA drives. ATX motherboards can have a 20‐ or 24‐pin single power connector but an adapter is not always required.
You have been asked to install a new hard drive for a client. Which of the following is not a consideration when installing an internal storage device?
a) match the form factor of the drive or adapt it to an available drive bay or slot.
b) secure the drive with at least two screws on one side and preferably two on each side.
c) Due to the high revolutions, you must secure an external power source because the internal power supplies do not have the capacity.
d) You need to be sure that the routing of the drive’s data cable, if applicable, does not obstruct the engineered flow of air across internal components.
C. Today’s hard drives, regardless of their rpm, have standard internal power connections. The other options are valid concerns when installing an internal drive.
A client just bought a new digital camera for his photography business. Which of the following is specifically designed as an internal storage device for cameras?
Memory cards, Optical discs, Flash drives, mSATA
memory cards. Memory cards such as SD cards were designed for devices such as digital cameras. Optical discs are larger and used mostly with laptops and larger systems. Flash drives are USB. Some cameras may have a USB port, but that is external storage and not internal storage. mSATA is a laptop expansion card technology.
When installing multiple add-on cards of the same type, which type of cards might you need to bridge together to function as a single unit?
Video, Sound, USB, eSATA
video. PCIe video cards may be bridged together, enabling two cards to function as one system. Sound cards and I/O expansion cards such as USB and eSATA cards do not have bridging capabilities.
You are purchasing a new video card for a desktop computer. For the best performance, which type of video card should you purchase?
PCI x16, PCI x128, AGP, PCIe x128, PCIe x16
PCIe x16.
For a video card, the best standard currently available is PCIe, and the widest channel width is x16. There are no PCI x16 or PCI x128 slots, nor is there a PCIe x128 slot. AGP is an older video expansion standard that is now obsolete.
Which of the following is not a consideration when upgrading power supplies?
a) You might find that you do not have a matching motherboard connector on your new power supply.
b) You might find that your case has a nonremovable power supply.
c) You might find that your power rating is not adequate on the new power supply.
d) You might find that you do not have enough of the appropriate connectors coming from the power supply for the devices that you have installed.
B. Personal computers do not have permanently installed power supplies. Like other electrical and electronic components, power supplies can and do fail on a regular basis. Permanently mounting a power supply to a chassis would be a disservice to the consumer. You should consider the cumulative power needs of your installed components, and you might have to obtain adapters and splitters if you do not have enough or you have the wrong types of connectors coming from the power supply.
You are choosing a flash standard for a client. They want the smallest flash cards possible. Which standard should you recommend?
SD, CompactFlash, microSD, miniSD, xD
microSD.
The smallest of the options is microSD, at 15 mm × 11 mm. Perhaps “micro” gives it away, but that also makes it easy to remember. SD cards are 32 mm × 24 mm. CompactFlash cards are the largest, at 36 mm × 43 mm. MiniSD cards measure 21.5 mm × 20 mm, and xD cards are 20 mm × 25 mm.
Your goal is to build the fastest computer possible. Which of the following hard drive technologies should you choose for the fastest read performance?
M.2 PCIe, M.2 SATA, NVMe PCIe, NVMe SATA
NVMe PCIe.
M.2 and NVMe are both relatively new SSD options, and both are incredibly fast. NVMe is slightly faster, though. SATA is limited to 600 Mbps transfer speeds, whereas PCIe is not. An NVMe PCIe card can sustain data read rates of about 3,500 Mbps.
You have been asked to configure a RAID 5 system for a client. Which of the following statements about RAID 5 is true?
a) It provides fault tolerance but no performance improvement.
b) It provides performance improvement but no fault tolerance.
c) If multiple drives in the array fail, the data can be saved provided that one drive is still operational.
d) It requires at least three drives to implement.
D. RAID 5 arrays require a minimum of three hard drives to implement. If one drive fails, the data is fine and the system can still function, albeit slowly. If more than one drive fails, the system will be inoperable. RAID 5 provides both fault tolerance and a performance improvement.
You have a motherboard with integrated video, and the video fails. You install a video add-on card. Which of the following statements are the most accurate? (Choose two.)
a) The add-on card will not function properly because of the integrated video.
b) The add-on card will function if it is bridged to the integrated video chipset.
c) The add-on card will be detected automatically and function properly if it’s PCIe.
d) For the card to work properly, you might need to disable the integrated video in the BIOS.
e) The add-on card will work properly by using the integrated card’s video driver.
C, D. Most likely, the new card will be detected and function properly once the computer is booted up. However, the driver will need to be installed. Odds are the new card will be a different model than the integrated card, which will require a new driver. On some systems, you will need to go into the BIOS and disable the integrated adapter. Bridging happens between two PCIe video adapters, not an integrated video chipset.
When replacing a power supply, which of the following tends to vary among power supplies and must be chosen properly to support all connected devices?
Wattage, Voltage, Amperage, Resistance
A. Power supplies are rated in watts. When you purchase a power supply, you should make sure the devices inside the computer do not require more wattage than the chosen power supply can offer. The voltage is fairly standard among power supplies, and it has nothing to do with the devices connected to the power supply. Amperage and resistance are not selling points for power supplies. Another thing that could vary is the number of power connectors—make sure the new power supply has enough to support all installed peripherals.
________ a software program that lets the operating system talk to the hardware
driver
You will encounter two classes of video cards: ______ and _____
onboard(integrated) or add-on
sound cards have a ________ game port
DA 15
MIDI
Musical Instrument Digital Interface
old sound cards would sometimes have a round ____-pin ____ port
(not DA 15)
5-pin MIDI port
_______ translates the data from the parallel data stream used inside the computer into the serial data stream that makes up the frames used on the network
network interface card
_________ modulates and demodulates analog and digital signals to enable computers to connect to each other over analog telephone lines.
modem
It’s the job of the _________ to track all the hardware in the system and supply resources as needed.
BIOS
the hard disk drive system contains the following three critical components:
controller, hard disk, host bus adapter
on a hard drive the _______ chip controls how the drive operates and how the data is encoded onto the platters.
controller
on a hard drive, the ________ is the translator, converting signals from the controller to signals that the computer can understand.
host bus adapter (HBA)
SAS
Serial Attached SCSI. (pronounced “scuzzy”)
Small Computer System Interface
the BIOS does not support more than _____ sectors per track
63
15,000 rpm drives are ______ drives
SAS
All 15,000 rpm drives are SAS drives, not SATA or PATA drives.
Hybrid drives can be implemented in two ways:
a solid-state hybrid drive and a dual-drive storage solution
SATA 1.x could transfer data at ________
150 MBps
SATA 2.x could transfer data at ________
300 MBps
SATA 3.x could transfer data at ________
600 MBps
