2- The specification of two telephone links are Link Class 1 B 300-3400 Hz SNR 40 dB Class 2 600-2800 Hz 30 dB A company has a requirement to send data over a telephone link at bit rate R= 20 Kbps without error. Would you advise the company to rent the more expensive class 1 service, or the cheaper class 2 service? Justify your decision.

Identify the relationship of the following terms with Digital Communication noirbt last from is amorava noidaimenicu Digital transmission boouho AT&T .noitsomiqms Isnpia nerij hodia noilsionspsi langia beu V e zefsion ipotlegpia erlismotorerti :(zeislumuoos li...) evilibl Digital Signal Processing Jowit ase to tedmun eru vinsupeano boillqms ai Bandwidth veion slanuojelonagen leligib novewoH behoganeted neo elengia polena snipho edi as oben azion-of-lanpia amse sril Aliw Isngia istigib wen ylenitne ne ed 0012 910 C

Select the correct answer5. In a digital communication system, regarding the effect on the probability of error, it is not relevant to seek ..A. one channel without distortion.B. a good SNR.C. a channel without noise.D. high fidelity of the signals.

* You have been asked to create a subnet that supports 16 hosts. What subnet mask ?should you use .255.255.255.252 • 255.255.255.224 .255.255.255.240 • 255.255.255.248 * ?How does a switch differ from a hub • A switch does not induce any latency into the frame transfer time. • A switch decreases the number of broadcast domains. • A switch operates at a lower, more efficient layer of the OSI model. . switch tracks MAC addresses of directly- connected devices. Which OSI layer header contains the address of a destination host that is on ?another network • Network

(b) In a particular implementation of ADSL2+, 400 downstream subchannels are being used to achieve a data rate of 10.4 Mbit s-1. If 75 subchannels are using 1024-QAM, 125 are using 64-QAM and 100 are using 16-QAM, what modulation scheme must the remaining channels use, assuming they all use the same scheme? Show all your workings

Q- To transmit the data 1011000 to his friend using hamming code technique. Calculate the transmitted hamming codeword

Write VHDL code (Entity and Architecture) for the following circuit. DO D1 D2 D3 Nor1 Nor2 Nor3 Dout

Suppose that the circuit shown in the below figure is to be modeled. What is the correct VHDL option for the synthesis of this circuit? global_resetb zb- global cik a

Que.26 What are Optical couplers? What are the functions of Couplers?

Netid 73:common in all addresses 73.0.0.8 73.22.17.25 73.0.0.1 73.255.255.254 Block 73.0.0.0 73 255 255 255 Switch Network address: 73.0.0.0/8 73.255.255.255 (Special) (H.W) An address in a block is given as 180.8.17.9. Find the number of addresses in the block, the first address, and the last address.