A 10Mbps (1M = 10^6) CSMA/CD network has a distance of 5000 m between stations sharing the link. The data frame is 512 bits long. The speed of the signal is 2x10^8m/s
1. Find the total time spent to transmit one frame (including transmission and propagation time)
2. Does the frame length of 512 bits work for a new 100 Mbps CSMA/CD network of this length? Why?
A 10Mbps (1M = 10^6) CSMA/CD network has a distance of 5000 m between stations sharing...
(TCO 4) The distance between two stations in a 10 Mbps LAN using CSM/CD multiple access method is 2,000 meters. Station A sends a long frame first and three micro seconds later, C starts sending a long frame. Notice that when C begins sending, the signal due to the frame from A has not reached station C yet. If it reached, station C would not send it. How many bits from station C have already been sent when it hears...
Question#1 1. What is the difference between a BSS and an ESS? 2. Discuss the three types of mobility in a wireless LAN. Question#2 A network using CSMA/CD has a bandwidth of 10 Mbps. If the maximum propagation time (Including the delays in the devices and ignoring the time needed to send a jamming signal, as we see later) is 25.611US, what is the minimum size of the frame? Question#3 Assume that, in a Stop-and-Wait ARQ system, the bandwidth of...
(1) The sublayer is responsible for CSMA/CD operation. Select one: a. Logical Link Control (LLC) b. Medium Access Control (MAC) c. Physical Layer Management d. Data Link Layer (2) Carrier Sense Multiple Access (CSMA) method was developed to increase the of local area networks. Select one: a. collision b. performance d. number of station c. transmission time (3) In Carrier Sense Multiple Access/Collision Detection (CSMA/CD), sending station must detect collisions by "listening" to the medium for at least b. one-way...
Question 4: If the BW of the line is 1.5Mbps, round trip time is 45ms and packet size is 1kB, what is the link utilisation in stop and wait? Question 5: Consider a transmission line with CSMA/CD. Assume that the signals travel in the fibre optic line at 0.8 times the speed of light, with an round trip time of 3.2ms, and the temperature of the glass medium is 32 degrees Celsius. Considering a packet (frame) size of 1600 bits,...
5. (10 points) Multiple Access Protocols Suppose nodes A and B are on the same 10 Mbps Ethernet segment and the propagation delay between the two nodes is 225 bit times. Suppose A and B send frames at the same time, the frames collide, and then A and B choose their own values of K in the CSMA/CD algorithm. Assuming active, no other nodes are can retransmissions from A and B collide. For our purposes, it suffices to work out...
Q6. Total: 7 marks] Nodes A and B are accessing a shared medium with propagation delay of 300 bit times between them (i.e., propagation delay equals to the amount of time to transmit 300 bits onto the link). A and B each have a frame of 1,000 bits (including all headers and preambles) to send to each other. a) (3 marks] In the worst case, how many bits would A have sent out when it detects collision? Briefly show how...
help with computer network questions 1. What is the difference between circuit switching and packet switching? 2. What are the different layers in today’s Internet? Why do we create layers? 3. Suppose there is a 10 Mbps microwave link between a geostationary satellite and its base station on Earth. Every minute the satellite takes a digital photo and sends it to the base station. Assume a propagation speed of 2.4 * 10^8 meters/sec. a. What is the propagation delay of...
Compute the time required for circuit switching and packet switching with the following conditions: •The destination is 4hops away from the source: three intermediate switches between the source and the destination, with 4links. •The distance between source (anddestination) computerto its connected switch is 1Km.The distance between any two adjacent switches is 10Km. •The signal propagation speed is 5x10^5m per second.•The message size is 5 Mega bits (1 Mega = 10^6) •The maximum packet size is 200k bits (1k = 10^3....
Please Answer all Questions on Networks, They all involve calculation ( 1-9 Questions) "A single router is transmitting packets, each of length L bits, over a single link with transmission rate R Mbps to another router at the other end of the link. Suppose that the packet length is L= 12000 bits, and that the link transmission rate along the link to router on the right is R = 1000 Mbps. What is the maximum number of packets per second...
Problem 2 For a given network, the average packet length L = 1024 bytes, packets are arriving with an average rate = 8 pakets/s, the network is used to support voice call services which can tolerate a maximum end-to-end delay of 150 ms, the average end-to-end distance between any two connected nodes in the network is 1000 km, the average phase velocity for signal travelling throughout the network links is 0.1 speed of light in free space and the call...