Question

Plz, nswer all question.

3.design a hierarchical TDM system to multiplex 10 input channels together. Assume each multiplexer (at any level of the hierarchy) can combine, at most, 3 inputs. Sketch your design. (There are several possible designs.)

9. A CRC divisor is 1001001. What is the polynomial?

10. A CRC polynomial is x3 + x + 1. What is the divisor?

11. For each protocol listed below, indicate whether it is a controlled access protocol, a random access protocol, or a channelization protocol.

a. Polling_____________________

b. Reservation_____________________

c. TDMA______________________

d. CSMA/CD_____________________

e. FDMA_____________________

f. Token Passing______________________

g. CDMA_____________________

h. CSMA/CA_____________________

Answer 1

Solution:

3.

9. The polynomial is x⁶ + x³ + 1

10. The divisor is 1011.

11.  For each protocol listed below, indicate whether it is a controlled access protocol, a random access protocol, or a channelization protocol.

a. Polling _ controlled access protocol_

b. Reservation __controlled access protocol_

c. TDMA __channelization protocol__

d. CSMA/CD ___random access protocol__

e. FDMA __channelization_protocol_

f. Token Passing ___controlled _access protocol__

g. CDMA __channelization protocol__

h. CSMA/CA __random_access protocol