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(Solved): question 1 / Consider a network with a data rate of 10 Mbps. Messages sent on this network have a ma ...

question 1 /

Consider a network with a data rate of 10 Mbps. Messages sent on this network have a maximum size of 1000 bits, including a 16-bit control field.

1. What is the number of messages required to send a file F of 4 Mbits from one station to another?

2. Assuming that a station cannot send a new message until it receives an acknowledgment of the successful reception of the previously sent message. The acknowledgment takes the form of a 16-bit message. A timer is set to a duration T after the sending of each message. If time T expires before receiving an acknowledgment, the sending station resends the same message. The distance between the two farthest stations in the network is 1 km. The signal propagation speed is v = 200,000 km/s. What is the minimum value of T? (You ignore the queuing time and the processing time and use only the propagation time and the transmission time)

question 2 /

Explain the structural dissimilarities between coaxial cables and twisted-pair cables and discuss the advantages of coaxial cables in transmitting higher frequency signals.

question 3 /

Compare between the following two channelization protocols:

  1. Frequency-Division Multiple Access (FDMA)
  2. Time-Division Multiple Access (TDMA)

In by considering Principle, Resource Allocation, Efficiency, Advantages factors.

question 4 /

Explain the evolution of Ethernet standards from its inception to the modern era, covering Standard Ethernet, Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet. Discuss the technological advancements, key differences, and the impact of each iteration on network capabilities.

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