Expansion Cards, Storage Devices and power Supplies 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?
A. USB
B. NVMe
C. PCI
D. 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?
A. Drive interface
B. Disk controller
C. Hard disk
D. Host adapter
A.
A conventional hard disk drive system consists of the hard disk and its often-integrated controller as well as a host adapter to gan acces 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?
A. Multimedia
B. Communications
C. Input/Output
D. Storage
B.
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, inpu/output (such as an USB port does), or storage capabilities.
A client wants to ensure that their server does not lose power if there 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 varity of peripherals.
A client is looking for a desktop storage technology that provides the fastest possible data transfers. Which technology should you recommend?
A. SATA
B. NVMe
C. 10,000 rpm
D. 15,000 rpm
B.
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 propperly 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 folowing 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.)
A. +3.3VDC
B. -3.3VDC
C. +5VDC
D. -5VDC
E. +12VDC
F. -12VDC
G. +110VDC
H. -110VDC
A. C. D. E. F.
A power supply produces +3.3VDC, +5VDC, -5VDC, +12VDC and -12VDC from a 1140VAC input.
You are installing a new power supply in a desktop computer. Which of the following statements about power supplys 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 allways required.
Yo 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. You should match the form factor of the drive or adapt it to an availible drive bay or slot.
B. You should secure the drive with at least two screws on one side and preferably two on each side.
C. Due to the high revolutions at which modern hard drives spin, you must secure an external power source because the internal power supplies does 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 speciffically designed as an internal storage device for cameras?
A. Memory cards
B. optical discs
C. Flas drives
D. mSATA
A.
memory cards such as SD cards were designed for devices such as digital camera’s. Optical discs are larger and used mostly with laptops and larger systems. Flas drives are USB. Some cameras may have an 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 you need to bridge together to function as a single unit?
A. Video
B. Sound
C. USB
D. eSATA
A.
PCie video cards may be bridget 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?
A. PCI x16
B. PCI x128
C. AGP
D. PCIe x128
E. PCIe x 16
E.
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 absolete.
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 non removable 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 disservice to the consumer. You should consider the cummulative 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 power supply.
