Description : Which of the following is associated with error detector? A) Odd parity bit B) Even parity bit C) Both of the above D) None of above
Last Answer : Answer : C
Description : Which of the following is associated with error detector? a. Odd parity bit b. Even parity bit c. Both of the above d. None of above
Last Answer : c. Both of the above
Description : While transmitting odd-parity coded symbols, the number of zeros in each symbol is a. odd b. even c. a and b both d. unknown
Last Answer : unknown
Description : Which error detection method consists of just one redundant bit per data unit? A) Simple parity check B) Two-dimensionalparity check C) CRC D) Checksum
Last Answer : Simple parity check
Description : A simple parity-check code can detect __________ errors A. an even-number of B. two C. no errors D. an odd-number of
Last Answer : D. an odd-number of
Description : What is used to identify whether a data word has an odd or even number of 1’s ? (1) Carry bit (2) Sign bit (3) Zero bit (4) Parity bit
Last Answer : Parity bit
Description : How many bytes of data can be sent in 15 seconds over a serial link with baud rate of 9600 in asynchronous mode with odd parity and two stop bits in the frame? a. 10,000 bytes b. 12,000 bytes c. 15,000 bytes d. 27,000 bytes
Last Answer : b. 12,000 bytes
Description : Instructions and memory address are represented by a. Character code b. Binary codes c. Binary word d. Parity bit
Last Answer : Binary codes
Description : How many 8-bit characters can be transmitted per second over a 9600 baud serial communication link using asynchronous mode of transmission with one start bit, eight data bits, two stop bits, and one parity bit ? a. 600 b. 800 c. 876 d. 1200
Last Answer : b. 800
Description : Which error detection method usesone's complement arithmetic? A) Simple parity check B) Two-dimensionalparity check C) CRC D) Checksum
Last Answer : Checksum
Description : Which error detection method uses one's complement arithmetic? A. Simple parity check B. Two-dimensional parity check C. CRC D. Checksum
Last Answer : D. Checksum
Description : Which method is used to detect double errors and pinpoint erroneous bits. a. Even parity method b. Odd parity method c. Check sum method. d. All of these
Last Answer : c. Check sum method.
Description : Given code word 1110001010 is to be transmitted with even parity check bit. The encoded word to be transmitted for this code is (A) 11100010101 (B) 11100010100 (C) 1110001010 (D) 111000101
Last Answer : (A) 11100010101
Description : The pattern of groups that have odd parity calledthe ses must match one of the of columns in the parity check matrix: a. Syndrome b. Dynodes c. Both d. None of these
Last Answer : a. Syndrome
Description : _______ can detect burst error of length less than or equal to degree of the polynomial and detects burst errors that affect odd number of bits. a. Hamming Code b. CRC c. VRC d. None of the above
Last Answer : b. CRC
Description : Let G(x) be the generator polynomial used for CRC checking. What is the condition that should be satisfied by G(x) to detect odd number of bits in error? a. G(x) contains more than two terms b. G(x) does ... exceeding the frame length c. 1+x is a factor of G(x) d. G(x) has an odd number of terms
Last Answer : c. 1+x is a factor of G(x)
Description : The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________ a. piggybacking b. cyclic redundancy check c. fletcher’s checksum d. parity check
Last Answer : a. piggybacking
Description : The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________ A. piggybacking B. cyclic redundancy check C. fletcher’s checksum D. parity check
Last Answer : A. piggybacking
Description : A burst error means that two or more bits in the dataunit havechanged. A) double-bit B) burst C) single-bit D) none of the above
Last Answer : burst
Description : Error detection ata data link level is achieved by A. bit stuffing B. cyclic redundancy codes C. Hamming codes D. equalization
Last Answer : cyclic redundancy codes
Description : The probability thata singlebit will be inerror on a typical public telephone lineusing 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error ratefor a communicationline using 9-bit frames is ... to A. 0.003 B. 0.009 C. 0.991 D. 0.999 E. None of the above
Last Answer : 0.009
Description : A simpleparity-check code can detect__________ errors. A) an even-number of B) two C) no errors D) an odd-number of
Last Answer : an odd-number of
Description : Instructions and memory address are represented by A) Character code B) Binary codes C) Binary word D) Parity bit
Last Answer : Answer : B
Description : Which flag indicates the number of 1 bit that results from an operation? a) Zero b) Parity c) Auxiliary d) Carry
Last Answer : Answer: b Explanation: The parity flag indicates the number of 1 bits in any operation. The resultant bit is called the parity bit. The main aim of the parity bit is to check for errors
Description : Each check bit is grouped with the information bits as specified by a__ a. Parity check code b. Parity check matrix c. Parity check bit d. All of these
Last Answer : b. Parity check matrix
Description : How many characters per sec (7 bits + 1 parity ) can be transmitted over a 2400 bps line if the transfer is synchronous (1 start and 1 stop bit)?
Last Answer : 1. 300 2. 240 3. 250 4. 275 Ans- 2400/(7+1+2) 240
Description : How is the parity bit in each storage location used?
Last Answer : To detect errors in the circuitry.
Last Answer : b. Binary codes
Description : Parity bit check is used to
Last Answer : Parity bit check is used to Detect 1 bit error
Description : Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is
Last Answer : Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is 12CPS.
Description : In communication satellite, multiple repeaters are known as a. detector b. modulator c. stations d. transponders
Last Answer : transponders
Description : When the set of input data to an even parity generator is 0111, the output will be (A) 1 (B) 0 (C) Unpredictable (D) Depends on the previous input
Last Answer : Ans: B In even parity generator if number of 1 is odd then output will be zero.
Description : In the output of an ac error detector, what indicates the (a) direction and (b) amount of control necessary for correspondence?
Last Answer : (a) Phase. (b) Amplitude.
Description : An error signal is the difference between what two quantities fed to the CT (error detector)?
Last Answer : Input signal and feedback.
Description : Error detector is also called as (A) Multiplexer (B) Decoder (C) Comparator (D) Integrator
Last Answer : B
Description : A generator that contains afactor of ____ can detectall odd-numberederrors. A) x B) x + 1 C) 1 D) none of the above
Last Answer : x
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_______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______, the changeor lackof change in the level of the voltagedetermines the value of the bit. A) NRZ-I B) NRZ-L C) both (a)and (b) D) neither (a) nor (b)
Last Answer : NRZ-I
Description : In_____, the level of the voltagedetermines the valueof the bit. A) NRZ-I B) NRZ-L C) both (a) and (b) D) neither (a) nor (b)
Last Answer : NRZ-L
Description : Which among the following represents the objectives/requirements of Data Link Layer? a. Frame Synchronization b. Error & Flow Control c. Both a & b d. None of the above
Last Answer : c. Both a & b
Description : . ________ is the process in which the receiver tries to guess the message by using redundant bits A. Connection-Oriented Service B. Forward error correction C. both a and b D. Confirm
Last Answer : B. Forward error correction
Description : What are the problems associated with switch type phase detector?
Last Answer : 1.The output voltage Ve is proportional to the input signal amplitude.This is undesirable because it makes phase detector gain and loop gain dependent on the input signal amplitude. 2.The output is proportional to cosQ making it non linear.
Description : Which provision can resolve / overcome the shortcomings associated with duplication or failure condition of Stop and Wait Automatic Repeat Request protocol especially due to loss of data frames or non reception ... message b. Provision of checksum computation c. Both a & b d. None of the above
Last Answer : Provision of sequence number in the header of message
Description : Why does my smoke detector chirp even though it has a new battery?
Last Answer : Most devices have battery level algorithms incorporated in the electronics. Since battery levels change so slowly, the algorithm is heavily filtered to reduce the effect of spurious electrical nose or power ... on being so observant. - and for being so diligent about changing the battery .
Description : Do you find this fb post a bit odd?
Last Answer : I’m thinking she was thinking ‘boys…lol.’ What specifically upsets you about that kind of pic? And please don’t say something vague about pedophiles.
Description : This is an unusual paragraph. I'm curious how quickly you can find out what is so unusual about it? It looks so plain you would think nothing was wrong with it! In fact, nothing is wrong with it! It is ... But if you work at it a bit, you might find out! Try to do so without any coaching! -Riddles
Last Answer : The entire paragraph has no ' e '
Description : Hi guys. I just want to ask an odd question. Does anyone else have a hands behind back fetish? I do and I honestly don't know why. It's a bit strange.?
Last Answer : I do not have a hands behind the back fetish, but I have encountered some people ... I do and I honestly don't know why. thank you for your question
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