Description : In digital magnetic tape recording, the series of recorded digital pulses can represent what three types of data?
Last Answer : a. Data used by digital computers. b. Pulsed squarewave signals. c. Digitized analog waveforms.
Description : Which digital data encoding method records a digital one as a positive pulse and a digital (zero) as a negative pulse and returns the tape to neutral between pulses?
Last Answer : Return-to-zero (RZ) encoding.
Description : What format of digital tape recording is normally used to record instrumentation or telemetry data?
Last Answer : Serial digital magnetic tape recording.
Description : What format of digital tape recording is normally used to store computer data?
Last Answer : Parallel digital magnetic tape recording.
Description : Which method of digital data encoding does NOT return the tape to neutral between pulses but, instead, saturates the tape positively or negatively as the incoming data changes between zero and one?
Last Answer : Non-return-to-zero (NRZ) encoding.
Description : Which digital data encoding method helps overcome a tape recorder’s low-frequency response problems by recording two logic levels for each incoming data bit?
Last Answer : Bi-phase level encoding.
Description : Which digital data tape encoding method presets the magnetic tape to all zeros and then records digital ones onto the tape?
Last Answer : Return-to-bias (RB) encoding.
Description : What three formats are used for digital magnetic tape recording?
Last Answer : 1) Serial, (2) parallel, and (3) serial-parallel.
Description : The data recording format in most of the modern magnetic tape is A) 7-bit ASCII B) 7-bit EBCDIC C) 8-bit ASCII D) 8-bit EBCDIC
Last Answer : Answer : D
Description : The data recording format in most of the modern magnetic tape is a. 7-bit ASCII b. 7-bit EBCDIC c. 8-bit ASCII d. 8-bit EBCDIC
Last Answer : 8-bit EBCDIC
Last Answer : d. 8-bit EBCDIC
Description : How many clock pulses are required to output a 4-bit number in serial form?
Last Answer : Four.
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 : Modern handheld digital tachometers operate by counting light pulses returned to the unit by ______________. A. the tach generator B. either the coupling or shaft C. a small bulb attached to the shaft D. a piece of reflective tape
Last Answer : Answer: D
Description : What two preventive maintenance actions must you do regularly to increase magnetic head life and to ensure good tape recording and playback?
Last Answer : a. Keep the heads clean. b. Keep the heads demagnetized.
Description : What are four types of tape errors that can degrade a magnetic recording system’s performance?
Last Answer : Signal dropout, noise, skew, and level. Dropout is the most common.
Description : Digital magnetic tape recorders used to store and retrieve digital data fall into what three categories?
Last Answer : a. Computer-compatible digital tape recorders. b. Telemetry digital tape recorders. c. Instrumentation digital tape recorders
Description : Which of the eight methods for encoding digital data onto magnetic tape is most widely used because it’s accurate, simple, and reliable?
Description : How do worn or sticking tape transport guides cause dynamic skew on a multi-track recorder?
Last Answer : The tape drifts past the multi-track head at an angle.
Description : The multi-track tape recorder in your computer system has a fixed skew error. What does this mean and what is the probable cause?
Last Answer : Skew means there are time differences between the individual tracks of a multi-track recorder’s magnetic head. It happens when the tape isn’t properly aligned with the head. Fixed skew happens when the tape passes over an improperly aligned magnetic head.
Description : Is a digital recording generated from an old vinyl record or tape invisible to copyright flags?
Last Answer : Quick NO not invisible. The copyright detection software works off the tunes themselves and tries to do pattern matching on the sound. So it may be an old LP or an old reel-to-reel recording that is your source, but if they can recognize the sound pattern, they will ding you.
Description : Where online can I find FREE books-on-tape in MP3 or other digital format?
Last Answer : answer:http://librivox.org/ At LibriVox, volunteers record chapters of books in the public domain into digital audio (eg. mp3), and then make the audio files available to the world, for free ( ... the internet. Also, check your public library. I know several which offer audio books via the web.
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 : What category of digital tape recorder is used to record special signals with a bandwidth of less than 500 kHz?
Last Answer : Instrumentation digital tape recorders.
Description : The number of records contained within a block of data on magnetic tape is defined by the A) Block definition B) Record contain clause C) Blocking factor D) Record per block
Last Answer : Answer : C
Description : Which of the following is not true for a magnetic disk? A) It is expensive relative to magnetic tape B) It provides only sequential access to stored data C) Users can easily update records by writing over the old data D) All of above
Last Answer : Answer : B
Description : Which of the following is not true for a magnetic disk? a. It is expensive relative to magnetic tape b. It provides only sequential access to stored data c. Users can easily update records by writing over the old data d. All of above
Last Answer : It provides only sequential access to stored data
Last Answer : b. It provides only sequential access to stored data
Description : The number of records contained within a block of data on magnetic tape is defined by the a. Block definition b. Record contain clause c. Blocking factor d. Record per block factor
Last Answer : c. Blocking factor
Description : _______ is an input device that converts analog information into digital form. A. Plotter B. Track Ball C. Light Pen D. Digitizer
Last Answer : D. Digitizer
Description : What is the term given to arranging data records in a predefined sequence or order?
Last Answer : Sorting.
Description : What are two disadvantages of using a recorder’s erase head to erase data recorded on a magnetic tape?
Last Answer : Using an erase head is slow, and it may not completely erase the tape.
Description : What type of magnetic tape is used to record computer programs and data, and what are the additional thickness and quality standards for this type of tape?
Last Answer : digital magnetic tape is for computer programs and data. Its base material is about 50% thicker. The tape’s surface must not have blemishes or coating flaws because losing even one digital data bit could ruin the recorded computer program or data.
Description : The amount of data that can be stored on a linear inch of tape is known by what term?
Last Answer : Recording density.
Description : Why is Bertillonage inferior to fingerprints for recording and classifying criminal records?
Last Answer : for purposes of enrollment in a system or when under arrest for a suspected criminal offense
Description : Which of the following is an example of an error? a. Defalcation b. Misapplication of accounting policies. c. Suppression or omission of the effects of transactions from the records or documents. d. Recording of transactions without substance
Last Answer : Misapplication of accounting policies.
Description : A recording type rain gauge (A) Produces a mass curve of rain fall (B) Records the cumulative rain (C) Is sometimes called integrating rain gauge or continuous rain gauge (D) All the above
Last Answer : Answer: Option D
Description : Which data type helps you to handle input that is in boolean format? -Technology
Last Answer : (c) Yes/No will allow boolean value.
Description : Which of the following is not a function of the Input Unit? a) It reads instructions and data from the outside world. b) It converts the data into computer acceptable format. c) It ... into user understandable format. d) It supplies the data and instructions to the computer for further processing.
Last Answer : Answer: c Explanation: The input unit converts the data into computer understandable format i.e. binary format and not the user understandable format. It is the duty of the output unit to make the data into user understandable format
Description : Which unit is responsible for converting the data received from the user into computer understandable format? a) Memory Unit b) Arithmetic & Logic Unit c) Input Unit d) Output Unit
Last Answer : Answer: c Explanation: The Input Unit converts the data, which the user enters into a language which the computer understands, i.e. it converts the data into binary format. The ... after immediate results of processing whereas; the ALU is responsible for various arithmetic and bitwise operations
Description : What is the frequency of track recording of the sections having speed more than 110 kmph to 130 kmph a. 4 Months b. 2 Months c. 6 Months d. 3 Months
Last Answer : d. 3 Months
Description : In a bistable multivibrator, how many trigger pulses are needed to produce one complete cycle in the output?
Last Answer : Two.
Description : . What type of counter has clock pulses applied to all FFs?
Last Answer : Synchronous.
Description : Which receiver component converts the IF pulses to video pulses?
Last Answer : Detector.
Description : Which of the basic timing circuits produces sharp trigger pulses directly?
Last Answer : Blocking oscillators.
Description : what causes the initial and final pulses on the receiver output signal?
Last Answer : Leakage from the duplexer.
Description : A self-synchronized radar system obtains timing trigger pulses from what source?
Last Answer : Transmitter.
Description : Range-marker generators produce pulses based on what radar constant?
Last Answer : The radar mile (12.36 microseconds).
Description : Current that flows in pulses in the same direction is called
Last Answer : Pulsating dc