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1. What is the physical component where data are stored in a HDD? a. Read/write head b. Platter c. Sector d. Cluster
b. a conventional HDD contains discs called platters, on which data are stored magnetically through read/write heads by way of a magnetic coating.
2. Which of the following is not one of the three major components of a hard disk drive system? a. Drive interface b. 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 gain access to the rest of the computer system. the drive interface is a common component of the controller and host adapter.
3. What is the largest NTFS volume size supported by Windows XP? a. 256gb b. 2TB c. 128TB d. 256TB
d. a fixed number of clusters is supported by each operating system, leading to a corresponding maximum volume size. if the maximum NTFS cluster size of 64 KB is used, Windows XP can support a single-volume size of 256TB. When a cluster size of one sector, or 512 bytes, is used, the maximum volume size reduces to 2TB.
4. Which technology is based on flash memory and is intended to eventually replace conventional hard disk drives that have moving discs and other mechanisms? a. Thumb drives b. Memory cards c. Solid state drives d. Optical drives
c. solid state disks (SDDs) are capable of replacing conventional HDDs, contingent upon cheaper components and higher capacities.
5. High-density 3 1/2 floppy diskettes have a formatted capacity of a. 360kb b. 720kb c. 1.44mb d. 2.88mb
c. High-density 3 1/2 floppy diskettes have a formatted capacity of 1.44. Double density 5 1/4 floppies can be formatted to a capacity of 360KB, while double density floppies support 720KB. The extended density 3 1/2 floppy diskettes can be formatted to 2.88MB.
6. Which optical disc format supports a data capacity of 25gb? a double-sided, double layer DVD+R b. Single sided, single layer Blue-ray disc c. Double sided, single layer DVD-R d. Double sided, single layer DVD+R
b. Blue-ray discs have a single-sided, single layer capacity of 25GB. The best of the other options achieve no more than roughly 17GB
7. Which of the following best describes the concept of hot-swappable devices? a. power does not need turned off before the device is inserted or removed. b. the device can be removed with power applied after the device 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 stoped in the operating system before being removed. The term has nothing to do with the heat level of the device.
8. 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 inputo f AC voltage, which they convert to the DC voltages required by the components they supply power to.
9. what are the five output voltages produced by a common PC power supply? (choose five) a. +3.3VDC b. -3.3VDC c. +5VDC d. -5VDC e. +12vDC f. -12VDC g. +110VAC h. -110VAC
A,C,D,E,F A PC's power supply produces +3.3VDC, +5VDC, -5VDC, +12VDC, and -12VDC from a 110VAC input.
10. Which of the following statements about power supplies is true? a. you must make sure 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 connectors as PATA hard drives. c. Power supplies supply power to ATX-based motherboards with connectors known commonly as P8 and P9. d. Molex connectors are used with PATA hard drives, while Berg connectors are used with floppy drives.
D. Molex power connectors have been used with larger internal devices since the original PCs hit the market. When the 3 1/2 floppy diskette drives were launched, they used the newer Berg connectors. Europe requires 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. AT-based motherboards call for P8 and P9 conectors; ATX motherboards have a newer 20 or 24 pin single power connector.
11. What kind of device uses unique physical traits of the user to authenticate their access to a secure system or location? a. barcode reader b. biometric device c. keyboard d. touch screen
b. biometric input devices scan a physical trait of the user, such as voice, fingerprint, and retina, for authentication purposes during attempts to access computer systems and other property.
12. What kind of media is most commonly used when large amounts of data need to be archived on a regular basis? a. tape b. optical disc c. external hard drive d. floppy diskette
a. although inefficient as an interactive medium, sequential tape-based storage continues to be developed in increasing capacities. Tape remains the best choice for frequently backing up large amounts of data for redundancy and archival purposes.
13. what type of input device employs roughly the same connector as the original AT keyboard? a. barcode reader b. PS/2 keyboard c. midi d. touch screen
c. MIDI devices use a 5-pin DIN connector similar to the one used with the original AT keyboard.
14. what can you use to convert video to a format that can be uploaded to the internet, among other things? a. barcode reader b. video capture card c. tv tuner card d. MIDI device
b. a video capture card is used to convert raw video input to a format that can be shared electronically. Although many TV tuner cards provide this functionality, it is their video capture component that gives them this capability. Any adapter that is strictly a TV tunner cannot capture video.
15. why might you use a KVM switch? a. you have multiple ethernet devices that need to communicate with one another. b. you need to be able to switch the voltage to a particular device. c. you do not have a non-network attached printer but want multiple computers to be able to print to it. d. you have more than one server and dont want to buy certain external peripherals separately for each.
d. KVM switches are ideal when you have multiple computers situated near one another and do not want to commit the extra desk space to each computer having its own keyboard, mouse, and monitor
16. which category of adapters includes NICs? a. multimedia b. I/O c. Communications d. video
c. network interface cards are considered to be a form of communications adapter
17. What category of adapter would you need to install to equip a system with one or more USB ports? a. multimedia b. I/O b. Communications d. Video
b. interfaces, such as USB ports, are considered input/output ports. If you have to add USB capability to a computer, an I/O adapter with USB ports on it would meet the need.
18. what type of adapter has an RJ-11 jack built in? a. modem b. video c. sound d. NIC
a. modems have RJ-11 jacks for interface to the Public Switched Telephone Network (PSTN) The modular jacks that Ethernet NICs have are known as RJ-45 jacks.
19. What type of pointing device features a ball and buttons on the top and a flat, steady surface on the bottom? a. mouse b. touchpad c. trackball d. trackpad
c. a trackball is a sort of stationary mouse that has the ball for movement detection on the top of the device along with the keys. The ball is actuated the the thumb or fingers, not by moving the device along a flat surface or mouse pad. Trackballs are ideal where desk space is limited. There is no such thing as a trackpad.
20. When replacing a power supply, which of the following tends to vary among power supplies and must be chosen properly to support all connnected devices? a. wattage b. voltage c. amperage d. resistance
a. power supplies are rated in watts. when you purchase a power supply, you should make sure that 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 has nothing to do with the devices connected to the power supply. Amperage and resistance are not selling points for power supplies.
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