Description : In NRZ code, does the presence of a high-light level in the bit duration represent a binary 1 or a binary 0?
Last Answer : Binary 1.
Description : In_______encoding, the duration of the bit is divided into twohalves. Thevoltage remains at one level during thefirst half and moves to the other level in the second half. The transition at the middle of the bit ... Manchester B) differential Manchester C) both (a) and (b) D) neither (a) nor (b)
Last Answer : both (a) and (b)
Description : In Manchester anddifferential Manchester encoding, the transition at the middle of the bit is usedfor __________. A) bit transfer B) baud transfer C) synchronization D) none of the above
Last Answer : synchronization
Description : _____ encoding has a transition at the middle of each bit. A) RZ B) Manchester C) Differential Manchester D) All the above
Last Answer : All the above
Description : _____ encoding has a transition at the beginning of each 0 bit. A) RZ B) Manchester C) Differential Manchester D) All the above
Last Answer : Differential Manchester
Description : In___________ thereis alwaysa transition at the middle of the bit, but thebit values are determined at the beginningof the bit. If the nextbit is 0, there is a transition; if the next bit is 1, there is none. A) Manchester B) differential Manchester C) both (a) and (b) D) neither (a) nor (b)
Last Answer : differential Manchester
Description : In Ethernet when Manchester encoding is used, the bit rate is: a. Half the baud rate. b. Twice the baud rate. c. Same as the baud rate. d. None of the above
Last Answer : a. Half the baud rate.
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 : Standard Ethernet (10-Mbps) uses_______ encoding A) NRZ B) AMI C) Manchester D) differential Manchester
Last Answer : Manchester
Description : Which encoding method uses alternating positive and negative values for1s? A) NRZ-I B) RZ C) Manchester D) AMI
Last Answer : AMI
Description : Which of the following encoding methods does not provide for synchronization? A) NRZ-L B) RZ C) NRZ-I D) Manchester
Last Answer : NRZ-L
Description : Unipolar, bipolar, and polar encoding are typesof _______ encoding. A) line B) block C) NRZ D) Manchester
Last Answer : line
Description : The transformer signal coding method for T1 carrier is A. Binary B. NRZ C. Manchester D. Bipolar
Last Answer : D. Bipolar
Description : The transmission signal coding method of TI carrier is called a. Bipolar b. NRZ c. Manchester d. Binary
Last Answer : Bipolar
Description : The ASCII encoding of binary data is called a. base 64 encoding b. base 32 encoding c. base 16 encoding d. base 8 encoding
Last Answer : a. base 64 encoding
Description : An ASCII is a character-encoding scheme that is employed by personal computers in order to represent various characters, numbers and control keys that the computer user selects on the ... C) American Standard Code for Information Integrity (D) American Standard Code for Isolated Information
Last Answer : (A) American Standard Code for Information Interchange
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 are the three most popular methods for encoding digital data onto magnetic disks?
Last Answer : a. Frequency modulation (FM). b. Modified frequency modulation (MFM). c. Run length limited (RLL).
Description : What are the four widely used variations of the NRZ encoding method?
Last Answer : a. Non-return-to-zero level (NRZ-L). b. Enhanced non-return-to-zero level (E-NRZ-L). c. Non-return-to-zero mark (NRZ-M). d. Non-return-to-zero space (NRZ-S).
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 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 : 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 : Which of the eight methods for encoding digital data onto magnetic tape is most widely used because it’s accurate, simple, and reliable?
Description : In ATM, the _____ layer defines thetransmission medium,bit transmission,encoding, and electrical-to-optical transformation. A) physical B) ATM layer C) AAL D) none of the above
Last Answer : physical
Description : If the length of the fiber point defect changes with pulse duration, is the OTDR signal deviation a point defect or a region of high fiber attenuation?
Last Answer : A point defect.
Description : The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: Fe = 26, Ni = 28)
Last Answer : The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic ... the oxidation state of the metal is increased
Description : A base-16 number system that uses sixteen distinct symbols 0-9 and A-F to represent numbers from 0 to 15. A. Binary B. Decimal C. Hexadecimal D. Hepadeximal
Last Answer : A. Binary
Description : Which of the following conditions suggests auditor negligence? a. Failure to detect collusive fraud perpetrated by members of middle management. b. Failure to detect collusive fraud perpetrated by ... control structure. d. Failure to detect material errors under conditions of weak internal control
Last Answer : Failure to detect material errors under conditions of weak internal control
Description : A network with named nodes and labeled arcs that can be used to represent certain natural language grammars to facilitate parsing. a) Tree Network b) Star Network c) Transition Network d) Complete Network
Last Answer : c) Transition Network
Description : The least significant bit of the binary number, which is equivalent to any odd decimal number, is: A) 0 B) 1 C) 1 or 0 D) 3
Last Answer : Answer : A
Description : The least significant bit of the binary number, which is equivalent to any odd decimal number, is: a. 0 b. 1 c. 1 or 0 d. 3
Last Answer : a. 0
Description : Which edges of the pulse can be modulated in pulse duration modulation?
Last Answer : Either, or both at the same time.
Description : Which of the following conditions indicates that a lead-acid battery is being charged too rapidly? A. Sparks occurring at the positive terminal. B. Unusually high electrolyte specific gravity. C. Low plate potentials being developed. D. Excessively high temperatures and gassing rates.
Last Answer : Answer: D
Description : ‘Black holes’ refers to--------? A. Holes occurring in heavenly bodies B. Bright spots on the sun C. Collapsing object of high density (Answer) D. Collapsing object of low density
Last Answer : C. Collapsing object of high density (Answer)
Description : Consider a 32 - bit microprocessor, with a 16 - bit external data bus, driven by an 8 MHz input clock. Assume that the microprocessor has a bus cycle whose minimum duration equals four input clock cycles. What ... (A) 8x106 bytes/sec (B) 4x106 bytes/sec (C) 16x106 bytes/sec (D) 4x109 bytes/sec
Last Answer : (B) 4x106 bytes/sec
Description : In a stick shift car, is it easier on the clutch to pop it and get some jerkiness, or to ride it a bit for a smoother transition?
Last Answer : answer:The clutch is designed to slip, but it's also designed to wear slightly over time. If you ride it too much you can conceivably wear it out in a couple of hours. If you decide to ... get familiar with the car faster and really lessen the chances of causing damage. Good luck with the dispute.
Description : In PCM encoding, quantization level varies as a function of ________ a) Frequency b) Amplitude c) Square of frequency d) Square of amplitude
Last Answer : b) Amplitude
Description : Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? A- By rearrangements of the DNA encoding the variable regions of the heavy ... proteins can physically change their shape to bind different epitopes D- Both (a) and (b)
Last Answer : Both (a) and (b)
Description : How many digits does it take to represent the decimal number 81 in binary?
Last Answer : It takes 7 digits.
Description : A number system that has eight different symbols to represent any quantity is known as A) Binary B) Octal C) Decimal D) Hexadecimal
Last Answer : Answer : B
Description : Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent (A) A pure component (B) A binary mixture (C) A ternary mixture (D) Partially miscible ternary system
Last Answer : (B) A binary mixture
Description : A simple quantization scheme would be to represent each output of the source with the ____value closest to it. a. Codeword b. Integer c. Binary sequence d. Coordinates
Last Answer : b. Integer
Description : Which one of the following represent the binary equivalent of the decimal number 23 ? (A) 01011 (B) 10111 (C) 10011 (D) None of the above
Last Answer : (B) 10111
Description : Which of the following voltage is used represent binary '1' in digital circuits . 1.0 V 2. 15 V 3. +5 V 4. 25 V
Last Answer : Which of the following voltage is used represent binary '1' in digital circuits . 1.0 V 2. 15 V 3. +5 V 4. 25 V
Description : A NAND gate has Z and X as inputs. What will be the output logic level if Z is HIGH and X is LOW?
Last Answer : HIGH.
Description : What type of modulator is the cathode modulator (low- or high-level)?
Last Answer : Low-level.
Description : What is the modulus of a five-stage binary counter?
Last Answer : 32.
Description : How is a binary 1 encoded in RZ line coding?
Last Answer : A half-period optical pulse present in the first half of the bit duration.