ONE: chapter 1:list a standards organization and describe it. TWO: chapter 2:lis

Question

ONE: chapter 1:list a standards organization and describe it.

TWO: chapter 2:list 3 protocols used in the transport layer [give the meaning of the acronym too!]

THREE: chapter 4:The input to a 4B/5B block encoder is 1010 0010, what is the output?

four: ch6: Assume that a voice channel occupies a bandwidth of 3 kHz. We need to multiplex5 voice channels with guard bands of 50 Hz using FDM. Calculate the required bandwidth.

five: ch7: Microwave propagation is ________________

six: ch10: the CRC polynomial for HDLC is ______________.

Explanation / Answer

1. The Different standards of organization are OSI(Open Systems Interconnect) , IEEE(The Institute of Electrical and Electronic Engineers), ISO (The International Organization for Standardization), ISA (The International Society of Automation), IES (The Illuminating Engineering Society). The network layer protocols are defined based on the OSI model or TCP/IP model.

2.The three Differnet protocols used in the transport layer are TCP (Transmission Control Protocol), UDP (User Datagram Protocol), DCCP (Datagram Congestion Control Protocol).

3. The output of the 4B/5B encoder for the input 1010 0010 is 10110 10100. 4B5B assigns each block of 4 consecutive bits an equivalent word of 5 bits.

5. Microwave propagation is affected greatly by environment constraints and it is nonreciprocal an dit involves the line of sight technology.

6. The CRC polynomial used in HDFC protocol is x16+x12+x5+1.

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