Consider two nodes (A, B) sharing the same broadcast channel of speed R =10Mbps. The propagation delay between the two nodes is 1ms. Consider a node C in the middle between both nodes. If A starts at time t=0 its transmission of a packet to node C, at what time can node B start transmitting its packet to a node D in the network in order for the two packets not to collide? Assume both nodes have each a packet of length L = 1000Bytes. О а. 1.3ms O b. 1ms О с. 0.5ms O d. 1.8ms

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Question
Consider two nodes (A, B) sharing the same broadcast channel of speed R =10Mbps.
The propagation delay between the two nodes is 1ms. Consider a node C in the
middle between both nodes. If A starts at time t=0 its transmission of a packet to node
C, at what time can node B start transmitting its packet to a node D in the network in order
for the two packets not to collide? Assume both nodes have each a packet of length L =
1000Bytes.
О а. 1.3ms
O b. 1ms
О с. 0.5ms
d. 1.8ms
Transcribed Image Text:Consider two nodes (A, B) sharing the same broadcast channel of speed R =10Mbps. The propagation delay between the two nodes is 1ms. Consider a node C in the middle between both nodes. If A starts at time t=0 its transmission of a packet to node C, at what time can node B start transmitting its packet to a node D in the network in order for the two packets not to collide? Assume both nodes have each a packet of length L = 1000Bytes. О а. 1.3ms O b. 1ms О с. 0.5ms d. 1.8ms
Suppose three active nodes (n1, n2, and n3) are competing for access to a channel using
slotted ALOHA. The channel is capable of transmitting a given frame at the full channel rate
of R Mbps (R = 27Mbps). Assume each node has an infinite number of packets to send, and
attempts to transmit in each slot with a probability p. The maximum network throughput is:
a.
10Mbps
O Б. 12Мbps
c. None of the above
O d. 4Mbps
Transcribed Image Text:Suppose three active nodes (n1, n2, and n3) are competing for access to a channel using slotted ALOHA. The channel is capable of transmitting a given frame at the full channel rate of R Mbps (R = 27Mbps). Assume each node has an infinite number of packets to send, and attempts to transmit in each slot with a probability p. The maximum network throughput is: a. 10Mbps O Б. 12Мbps c. None of the above O d. 4Mbps
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