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Question:
(a) For the bit stream 010011, sketch the waveforms for each of the code indicated.
Assume the following: the signal level for the previous bit for NRZI was a 1 and was positive; the most recent preceding 1 bit (AMI) had a negative voltage; and the most recent preceding 0 bit (pseudoternary) had a negative voltage. (Let 0 be positive for NRZ-L)
(b) Describe fully how you can use a (11/7) Hamming code to:
(i) detect and;
(ii) correct by giving the correct transmitted character;
if an incorrect codeword representing character "K" is received:
(ASCII value of "K" is 75)
(c) Describe the procedure known as byte stuffing. Explain why and when it is used and how it actually works.
Repeater known as regenerator ; it is an electronic machine that performs only at physical layer. It gets the signal in the network before it becomes loss or weak, recreates the
QUESTION (a) Consider the following digital bit stream 01001100 is to be encoded in: i. NRZ-I ii. Pseudoternary iii. Manchester iv. Differential Manchester Show th
In 10 or more pages, address the following topics (be sure to use diagrams as well as references). 1) Define broadband and baseband transmission technology. 2) Describe broadban
Ask question #Minimum 100 words are there non parasitic viruses
What is problem formulation in network security
a) Calculate the CRC for the frame below: Frame: 1101011011 Generator: 10011 Message after appending 4 zero bits: 11010110110000 b) OSI refers to a system in which any
Question: a. State briefly three reasons why computer networks are used? b. Differentiate between simplex, half-duplex and full-duplex mode of transmission. c. State any
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QUESTION a) Determine the RTT (round trip time) between a client requesting a web page of 1024 bytes in size from an internal web server on a 100 Base-T Ethernet. Consider a o
PACKET SNIFFERS A packet network protocol analyzer is a network tool which collects copies of packets from network and analyzes them. It can give network administrator with valu
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