4. The figure below shows a router connected to 4 devices. All devices,including the router, have transmission rates = 1 Mbits/s. The router canprocess the data instantaneously (processing delay= Os for all packets). Thequeue can hold a maximum of 10 Mbits at any given time, Note that allpackets have to join the queue. The table in the figure shows the time atwhich packets are generated (in s), where they are generated, where theyare going, and the size of each packet.R=1 Mbits/sBR = 1 Mbits/sARouterQueueProcessing Delay = OsTransmission Rate = 1 Mbits/sCR = 1 Mbits/sTime(s)fromtoSize(Mbits)t=0R = 1 Mbits/st = 1Dt = 2Вt = 10DBDACBO55A10C10t = 11AB5

The problem presented in the image involves analyzing the behavior of a router connected to four…

Answered: 4. The figure below shows a router…

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...

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Suppose two hosts A and B are connected via a router R. The A-R link has infinite bandwidth; the R-B link can send one packet per second. R's queue is infinite. Load is to be measured as the number of packets per second sent from A to B. Sketch the throughput-versus-load and delay-versus-load graphs, or if a graph cannot be drawn, explain why. Would another way to measure load be more appropriate?
6. Little's Law with multiple sources. Assume M applications sending packets to a network switch at rate 21, ., AM, if the network is stable, draw the queueing model, and determine the average queue size seen in that switch if the packets' average delay is T? ....
Explain the Go-back-N protocol: on an end-to-end basis; on a link-by-link basis.
TCP?
Please draw a flow diagram
12. Consider the network shown below with the current measured delays between two nodes. A B 3 5 8 E F a. List all possible simple paths between C and D; simple paths are those that do not repeat a node (i.e., no loops). b. Which path provides the shortest delay?
6.4-6. Self Learning Switches (c). Consider the network below with six nodes, star-connected into an Ethernet switch. Suppose that A sends a frame to A', A’ replies to A, then B sends a message to B’ and B’ replies to B, and then A sends to B and B replies to A. In this sequence of frame transmissions, how many frames have appeared at the interface at C'? Assume that the switch's table is initially empty. [Note: You can find more examples of problems similar to this here.]
Distance vector routing is used. Router L receives distance vectors from routers I, H, and K as shown below.(image) The distance from L to I is 30, from L to H is 10, and from L to K is 9. Show L’s updated routing table based on the vectors.
The Transmission Control Protocol (TCP) is one of the core protocols of the Internet protocol suite (IP), and is so common that the entire suite is often called TCP/IP. A TCP connection is managed by an operating system through a programming interface that represents the local end-point for communications, the Internet socket. During the lifetime of a TCP connection the local end-point undergoes a series of state changes. These states are: (1) TCPEstablished: connection is on and ready for data transfer, (2) TCPCLosed, connection is off, and (3)TCPListen, TCP is listening for connection requests. The TCP Connection performs three operations, where the behavior of the operations changes as the state of the connection changes. These operations are: (1) open, (2) close, and (3) Acknowledge. What design pattern best suites your needs? 1. Chain of responsibility 2. Strategy 3. Command 4. State
Write a Java TCP MultipleClient-Server Program for following scenario. NOTE Server Details are in the above figure Client-Server communicates continuously until the Client send Bye to the Server Use Multithreading for Multiple Clients NOTE : 1 cm = 0.39 inches 1 cm = 0.03 foot 1 cm = 0.01 meter Sample Ouput: Client Server 1 – cm to inches 2 – cm to foot 3 – cm to meter Enter length in cms (int) : 10 Received from Server 3.9 inches 1 – cm to inches 2 – cm to foot 3 – cm to meter Enter length in cms (int) : BYE Received from Server BYE Client DISCONNECTED Server Waiting for the Cline to be Connected… CONECTION ESTABLISHED Received From Client 10 cms Sent to Client 3.9 inches Received From Client BYE Sent to Client BYE HINT : When client choses 1 for cm to inches and enter 10, then the client sends the string 110 to the Server. Where the first char ‘1’ represents the cm to inches and the other 2 chars represents the 10.
Consider an employee using their computer to send and retrieve email at their workplace. Only Ethernet networks are used for physical connectivity, but the mail server is located on a separate network. The employee’s network and the mail server’s network are connected by a single router which also has a connection to the Internet via the workplace’s ISP. Explain how the employees email client sends and receives emails using the email server, indicating any protocols involved and where any encapsulation/decapsulation occurs as data travels between the client, local mail server, and remote mail servers.
Download delays for 100 objects (HTTP 1.1 with local web caching). Consider an HTTP 1.1 client and server. The RTT delay between the client and server is 2 seconds. Suppose the time a server needs to transmit an object into its outgoing link is 3 seconds. There is also a local web cache, as shown in the figure below, with negligible (zero) propagation delay and object transmission time. The client makes 100 requests one after the other, waiting for a reply before sending the next request. All requests first go to the cache (which also has a 2.0 sec. RTT delay to the server but zero RTT to the client). How much time elapses between the client transmitting the first request, and the receipt of the last requested object, assuming no use of the IF-MODIFIED-SINCE header line anywhere, and assuming that 50% of the objects requested are "hits" (found) in the local cache? Your answer should be among the following list( 702 secs, 552 secs, 352 secs, 350 secs, 150 secs) . Show your…

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