Description : Let C be a binary linear code with minimum distance 2t + 1 then it can correct upto ............bits of error. (1) t + 1 (2) t (3) t - 2 (4) t/2
Last Answer : (2) t
Description : To guarantee correction of upto t errors, the minimum Hamming distance d min in a block code must be ________. a. t+1 b. t−2 c. 2t−1 d. 2t+1
Last Answer : d. 2t+1
Description : The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channel capacity. Assuming that processing ... maximum utilization, when the sliding window protocol used is: a. A b. B c. C d. D
Last Answer : c. C
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 : When 2 or more bits in a data unit has been changed during the transmission, the error is called _____ a. random error b. burst error c. inverted error d. double error
Last Answer : b. burst error
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 : Error rate is A. an error-detectingcode based ona summation operation performed onthebits to be checked. B. a checkbit appended to anarrayof binary digits to make thesum of all thebinary digits. C. a ... ratioof the number ofdata units in error to the total number of dataunits E. None of the above
Last Answer : the ratioof the number ofdata units in error to the total number of dataunits
Description : The ________ between two words is the number ofdifferences between corresponding bits. A) Hamming code B) Hamming distance C) Hamming rule D) none of the above
Last Answer : Hamming distance
Description : The ________ between two words is the number of differences between corresponding bits A. Hamming code B. Hamming distance C. Hamming rule D. none of the above
Last Answer : B. Hamming distance
Description : A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate? A. 3 Kbps B. 6 Kbps C. 12 Kbps D. 24 Kbps
Last Answer : 6 Kbps
Description : In Go-Back-N ARQ, if 5 is the number of bits for thesequencenumber, then the maximum size of the receive window mustbe _____ A) 15 B) 16 C) 31 D) 1
Last Answer : 1
Description : In Go-Back-N ARQ, if 5 is the number of bits for thesequencenumber, then the maximum size of the send window must be _____ A) 15 B) 16 C) 31 D) 1
Last Answer : 31
Description : In _____coding, we divideour message into blocks, each of k bits, called ___. A) block; blockwords B) linear; datawords C) block; datawords D) none of the above
Last Answer : block; datawords
Description : Let G(x) be generator polynomial used for CRC checking. The condition that should be satisfied by G(x) to correct odd numbered error bits, will be: (1) (1+x) is factor of G(x) (2) (1-x) is factor of G(x) (3) (1+x2) is factor of G(x) (4) x is factor of G(x)
Last Answer : (1+x) is factor of G(x)
Description : For any B-tree of minimum degree t ≥2, every node other than the root must have atleast ............... keys and every node can have at most .............. keys. (A) t-1, 2t+1 (B) t+1, 2t+1 (C) t-1, 2t-1 (D) t+1, 2t-1
Last Answer : (C) t-1, 2t-1
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 : . ________ 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 : When 2 or more bits in a data unit has been changed during the transmission, the error is called ____________ A. random error B. burst error C. inverted error D. double error
Last Answer : B. burst error
Description : Consider a source computer(S) transmitting a file of size 106 bits to a destination computer (D)over a network of two routers (R1 and R2) and three links(L1, L2, and L3). L1connects S to R1; L2 connects R1 to ... file from S to D? a. 1005 ms b. 1010 ms c. 3000 ms d. 3003 ms Answer: Option(a)
Last Answer : a. 1005 ms
Description : A t-error correcting q-nary linear code must satisfy: Where M is the number of code words and X is (1) qn (2) qt (3) q-n (4) q-t
Last Answer : (1) qn
Description : To guarantee correction ofup to 5 errors in all cases, the minimum Hamming distance in a block code must be________. A) 5 B) 6 C) 11 D) none of the above
Last Answer : 11
Description : To guarantee the detectionof up to 5errors in all cases, the minimum Hamming distance in a block code mustbe _______. A) 5 B) 6 C) 11 D) none of the above
Last Answer : 6
Description : To guarantee the detection of up to 5 errors in all cases, the minimum Hamming distance in a block code must be _______ A. 5 B. 6 C. 11 D. none of the above
Last Answer : B. 6
Description : The _____ layer uses data compression to reduce the number of bits to be transmitted. a. presentation b. network c. data link d. application
Last Answer : a. presentation
Description : Suppose transmission rate of a channel is 32 kbps. If there are ‘8’ routes from source to destination and each packet p contains 8000 bits. Total end to end delay in sending packet P is _____. a. 2 sec b. 3 sec c. 4 sec d. 1 sec
Last Answer : a. 2 sec
Description : Suppose that the one-way propagation delay for a 100 Mbps Ethernet having 48-bit jamming signal is 1.04 micro-seconds. The minimum frame size in bits is: a. 112 b. 160 c. 208 d. 256
Last Answer : d. 256
Description : Consider a CSMA/CD network that transmits data at a rate of 100 Mbps (108 bits per second) over a 1 km (kilometre) cable with no repeaters. If the minimum frame size required for this network is 1250 bytes, what is the signal speed (km/sec) in the cable? a. 8000 b. 10000 c. 16000 d. 20000
Last Answer : d. 20000
Description : Number of bits per symbol used in Baudot code is a. 7 b. 5 c. 8 d. 9
Last Answer : 5
Description : Which of the following summation operations is performed onthe bits to checkanerror-detecting code? A. Codec B. Coder-decoder C. Checksum D. Attenuation
Last Answer : Checksum
Description : Which type of Sframe in HDLC exhibit the correspondence of last three bits [N(R)] by defining the negative acknowledgement (NAK) number with the code value of '01'? a. Receive ready b. Receive not ready c. Reject d. Selective Reject
Last Answer : c. Reject
Description : A string of linear mass density 0.005 kg/m is stretched by a force F=2t^2 N
Last Answer : A string of linear mass density 0.005 kg/m is stretched by a force F=2t^2 N ( t is in sec) as shown in figure. ... 24.5 m/s C) 32 m/s D) 40 m/s
Description : If T and R are tread and rise respectively of a stair, then (A) 2R + T = 60 (B) R + 2T = 60 (C) 2R + T = 30 (D) R + 2T = 30
Last Answer : Answer: Option A
Description : Group of binary bits(0&1) is known as: a. Binary code b. Digit code
Last Answer : a. Binary code
Description : If a modulating wave is sampled 10 times per cycle with a 5-element binary code, how many bits of information are required to transmit the signal?
Last Answer : 28. 50.
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 : The proper definition of a modern digital computer is a. An electronic automated machine that can solve problems involving words and numbers b. A more sophistic and modified electronic pocket calculator c. Any machine that can perform mathematical operations d. A machine that works on binary code
Last Answer : A machine that works on binary code
Description : EBCDIC stands for a. Extended Binary Coded Decimal Interchange Code b. Extended Bit Code Decimal Interchange Code c. Extended Bit Case Decimal Interchange Code d. Extended Binary Case Decimal Interchange Code
Last Answer : Extended Binary Coded Decimal Interchange Code
Description : In a linear block code, the_______ ofany two valid codewords creates another valid codeword. A) XORing B) ORing C) ANDing D) none of the above
Last Answer : XORing
Description : The original ASCII code used…bits of each byte, reserving that last bit for error checking a. 5 b. 6 c. 7 d. 8
Last Answer : c. 7
Description : An error-detectingcode inserted asa field in a blockof data tobe transmitted is known as A. Frame check sequence B. Error detecting code C. Checksum D. flow control E. None of the above
Last Answer : Frame check sequence
Description : Refer to CAP697 MRJT1 Fig. 4.3.1 Given: Estimated zero fuel mass 50t; estimated landing mass at destination 52t; final reserve fuel 2t; alternate fuel 1t; flight to destination distance 720nm, true course 030, W/V ... b. 4,400kg / 02hr 02min c. 4,750kg / 02hr 00min d. 4,600kg / 02hr 05min
Last Answer : a. 4,800kg / 01hr 45min
Description : Find the equation of normal to the curves `x=t^2, y=2t+1` at point
Last Answer : Find the equation of normal to the curves `x=t^2, y=2t+1` at point
Description : If q(10 - 10e-2t)mc find the current at t 1s?
Last Answer : i=dq/dti=d(10)/dt - d(10e^-2t)/dtd(10)/dt=0i= - d(10e^-2t)/dti=-((0 X e^-2t) +(-2 X 10X e^-2t) ) {by uv methord }i=20e^-2tt=1si=20 e^-2 {e^-2=0.135335 }i=2.707Ans:2.707mA
Description : What is the average life of a radioactive atom having a 'half life period' of T? (A) 1.44 T (B) 0.144 T (C) 14.4 T (D) 2T
Last Answer : (A) 1.44 T
Description : Calculate the emf of a material having a flux linkage of 2t 2 at time t = 1second. a) 2 b) 4 c) 8 d) 16
Last Answer : b) 4
Description : A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is (A) M/T (B) T/M (C) 2M/T (D) 2T/M
Last Answer : (C) 2M/T
Description : If is the internal pressure in a thin cylinder of diameter and thickness , the developed hoop stress, is (A) pd/2t (B) pd/4t (C) pd/t (D) 2pd/t
Last Answer : (A) pd/2t
Description : If a shaft is simultaneously subjected to a toque T and a bending moment M, the ratio of maximum bending stress and maximum shearing stress is (A) M/T (B) T/M (C) 2M/T (D) 2T/M
Description : The difference of pressure between the inside and outside of a liquid drop is (A) p = T × r (B) p = T/r (C) p = T/2r (D) p = 2T/r
Last Answer : Answer: Option D