Description : What is the point in life if it could be proven what many believe - that it precedes and is preceded by, an eternity of nothingness?
Last Answer : If life is preceded and is preceded by nothingness, then the only person you have to answer to is yourself. You are the judge as to whether you ought to exist and if so how. that is all
Description : Who precedes over the Senate?
Last Answer : What is the answer ?
Description : Formation of RNA primer: (A) Precedes replication (B) Follows replication (C) Precedes transcription (D) Follows transcription
Last Answer : Answer : A
Description : Which one of the following precedes reformation of the nuclear envelope during M phase of the cell cycle? (a) Decondensation from chromosomes and reassembly of the nuclear lamina (b) ... and formation of the phragmoplast (d) Formation of the contractile ring and transcription from chromosomes
Last Answer : (c) Formation of the contractile ring and formation of the phragmoplast
Description : Other than disk, what is another media used for backup files?
Last Answer : Magnetic tape.
Description : What is the temperature range within which a disk will operate?
Last Answer : 10 to 50 degrees Celsius or 50 to 120 degrees Fahrenheit.
Description : What can exposure to a magnetic field do to the data on a disk?
Last Answer : Destroy some or all of it.
Description : What type of hard disk drive interface has all of the controller card electronics included in the disk drive itself?
Last Answer : Integrated drive electronics (IDE).
Description : What type of disk drive interface has most of the electronics on a controller card mounted in the host computer?
Last Answer : ST-506/412 interface.
Description : The control electronics component of a floppy or hard disk drive performs what three main functions?
Last Answer : a. Spins the disk at the correct speed. b. Moves the heads across the recording surface. c. Tells the write/read heads when to write data and when to read it.
Description : Cartridge hard disk drives with 14" disk packs may require what additional types of preventive maintenance?
Last Answer : a. Cleaning with a special cleaning disk. b. Cleaning air filters. c. Cleaning spindles, rails, and slides. d. Cleaning and buffing read/write heads.
Description : Approximately how often should you clean a floppy disk drive that gets heavy use?
Last Answer : Once a month
Description : A kit for cleaning floppy disk drives contains what two items?
Last Answer : . a. A cloth or fiber cleaning disk. b. A bottle of cleaning solution.
Description : Why do floppy disk drives require more preventive maintenance than hard disk drives?
Last Answer : They are not sealed units, and they use flimsy plastic disks with an oxide coating that wears off and sticks to the heads
Description : In the actuator arm assembly of a hard disk drive transport, what device can position the magnetic heads to the correct track of a hard disk more accurately than a dc stepper motor?
Last Answer : Voice coil servo.
Description : Hard disk drive transports contain the electromechanical parts that perform what three functions?
Last Answer : a. Rotates the hard disk platters. b. Writes data to and reads data from the disk platters
Description : What part of a floppy disk drive transport contains the circuitry which controls the electromechanical parts of the transport?
Last Answer : Drive electronics circuit board.
Description : What part of a floppy disk drive transport uses a dc stepper motor to position the magnetic heads over the recording surface of a floppy disk?
Last Answer : Actuator arm assembly.
Description : The head arm assembly of a floppy disk drive transport has how many read heads and how many write heads?
Last Answer : Two read heads and two write heads.
Description : The drive motor of a 3-1/2", 1.44-MB floppy disk drive spins the disk at what RPM?
Last Answer : 600 RPM.
Description : What are the four most important parts of a floppy disk drive transport?
Last Answer : a. Drive motor/spindle assembly. b. Head arm assembly. c. Actuator arm assembly. d. Drive electronics circuit board.
Description : What method for encoding digital data enables you to store more data in less space by limiting the distance between pulses on a hard disk?
Last Answer : Run length-limited (RLL) encoding.
Description : Older, single-sided, single-density floppy disk drives would probably use what method for encoding digital data onto the floppy disk?
Last Answer : Frequency-modulation encoding.
Description : What is the most common method for erasing a hard disk?
Last Answer : Reformat the disk.
Description : What is the most common type of hard disk failure?
Last Answer : Head-crash.
Description : When computers use the cylinder method to store data on a hard disk pack, what three items make up the address that tells the computer where on a specific disk to store the data?
Last Answer : . a. Cylinder number. b. Recording surface number.
Description : What are the three most common sizes of hard disk platters?
Last Answer : 3-1/2 inches, 5-1/4 inches, and 14 inches.
Description : What three components determine the address that locates where on a floppy disk the computer will store the data?
Last Answer : a. disk side number, b. track number, and c. sector number.
Description : The process of formatting a floppy disk is called what type of sectoring?
Last Answer : Soft sectoring.
Description : What is the storage capacity of a 5-1/4" double-sided, high density floppy disk?
Last Answer : 1,200,000 bytes or 1.2 megabytes.
Description : What are the three levels of floppy disk density?
Last Answer : a. Single-density, b. double-density, and c. high-density.
Description : What type of floppy disk is made to store data on both sides of the disk
Last Answer : Double-sided.
Description : What is a floppy disk?
Last Answer : A thin, flexible platter coated with magnetic material so characters can be recorded.
Description : How does a magnetic drum differ from a magnetic disk?
Last Answer : The tracks in which the data is stored are assigned to channels that form circular bands around the drum.
Description : What two ways can data be physically organized on a disk pack?
Last Answer : By cylinder or sector.
Description : Why are disk storage devices popular?
Last Answer : Largely because of their direct access capabilities.
Last Answer : Largely because of their direct access capabilities
Description : Before a disk drive can access any sector record, a computer program has to provide the record’s disk address. What information does this address specify? A) Track number B) Sector number C) Surface number D) All of above
Last Answer : Answer : D
Description : Before a disk drive can access any sector record, a computer program has to provide the record’s disk address. What information does this address specify? a. Track number b. Sector number c. Surface number d. All of above
Last Answer : Track number
Last Answer : d. All of above
Description : While measuring frequency response, as the signal generator approaches the lowest and highest frequency the recorder can effectively record, the VTVM reading drops to less than - 3 dB. What does this indicate?
Last Answer : The upper and lower limits of the frequency response specification for that tape recorder.
Description : Two tape recorders have signal-to-noise ratios (SNRs) of 25-dB RMS and 35-dB RMS respectively. Which of the SNRs can record and reproduce the widest range of input signals and why?
Last Answer : 35-dB RMS because the highest SNR can always record and reproduce the widest range of input signals.
Description : The head driver circuit of a tape recorder’s FM record electronics (figure 5-4) performs what function?
Last Answer : It amplifies the frequency-modulated output from the record oscillator and sends it to the record head.
Description : How do FM record electronics differ from AM (direct record) electronics?
Last Answer : Instead of recording the signal just as it appears at the recorder’s input, FM record electronics records a frequency-modulated carrier signal from a record oscillator (figure 5-4) onto the magnetic tape
Description : The head driver circuit in a tape recorder’s direct record electronics component (figure 5-1) performs what function?
Last Answer : It takes the signal from the summing network, amplifies it, and sends it to the record head for recording.
Description : What two types of record and reproduce electronics are used by magnetic tape recorders?
Last Answer : . a. Direct record (AM). b. Frequency modulation (FM).
Description : A recorder's erase head is always placed in what sequence on the record/reproduce track?
Last Answer : . First, before the record and reproduce heads.
Description : Why are record heads always placed before reproduce heads on recorders?
Last Answer : Allow you to monitor the signals you're recording.
Description : Most record and reproduce heads are in one of what three bandwidth categories?
Last Answer : a. Narrowband—100 Hz to 100 kHz. b. Intermediate band—100 Hz to 500 kHz. c. Wideband—400 Hz to 2 mHz.