In a computer network, a server receives requests from two computers (A and B) working independently....
Messages arive to a computer server according to a Poisson distribution with a mean value 12 per hour. Ten of them are I page long, and two are more than 1. OMessages arrive to a computer server according to a Poisson distribution with a What is the probability that 5 short messages are received in 2 hour? b) What is the probability that at least 4 long messages are received in 3hours? 2p c)Determine the length of an interval such...
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1. A disk server receives requests from many client machines and requires 8 milliseconds to respond to each request. Let N = the number of additional requests that arrive before the service interval is complete. The probability of exactly k additional requests in the 8-millisecond service interval is P(N = k) = -0.9 (0.9k/k!, for k = 0,1, 2..., . If 2 or more new calls arrive while the service interval is only partially complete, what is...
The next three questions are related to the local area network shown below. In this network computers attached to links 1 & 2 send data to the server attached to link 3. The three devices are connected through a router. Link 1 Link 2 Link 3 Following parameters of the network have been provided. Propagation delay in link 1-138 micro seconds Propagation delay in link 2-309 micro seconds Propagation delay in link 3-216 micro seconds Frame size 1432 bytes ACK...
A system consists of 1 CPU, 1 Disk, and 1 Network Interface. A web server running on this system consists of a process that waits for an HTTP request. Once the request is received, the process services it by fetching the requested file from disk (an I/O operation) and then by sending the file content to the client. Assume that serving a request consists of the following phases: i. Process uses the CPU for 2 msec (parse request) // CPU...
3. For a single-server, single-line, single-phase waiting line system, where l represents the mean arrival rate of customers and m represents the mean service rate, what is the formula for the average utilization of the system? a) l / m b) l / (m-l) c) l2 / m(m-l) d) 1 / (m-l) e) l / m(m-l) 4. For a single-server, single-line, single-phase waiting line system, where l represents the mean arrival rate of customers and m represents the mean service...
Assignment One program will be the update server and the other will be the update client. Here is how the two programs should interact with each other: Server 1. the server starts up and reads the version number in the data.bin file and stores it in memory. 2. The server binds to a port and awaits connections. Client 1. The client starts up and it will first read the version number found within it's own data.bin file. 2. The client...
Using python 3 to create the UDP Ping Clien and server. Using UDP sockets, you will write a client and server program that enables the client to determine the round-trip time (RTT) to the server. To determine the RTT delay, the client records the time on sending a ping request to the server, and then records the time on receiving a ping response from the server. The difference in the two times is the RTT. The ping message contains 2...
Mary is a waitress in a city centre restaurant. She receives tips from customers at an average rate of λ per hour. During a particular eight a (2 marks) Let X be the number of tips Mary receives in an 8 hour period. If tips are received according to a Poisson process with rate λ tips per hour, state the distribution of X, with parameters b (5 marks) Write down the likelihood function, L(X; 5) for this problem. Remember to...
4 Mary is a waitress in a city centre restaurant. She receives tips from customers at an average rate of λ per hour. During a particular eight hour shift, she receives 5 tips. We wish to estimate λ. a (2 marks) Let X be the number of tips Mary receives in an 8 hour period. If tips are received according to a Poisson process with rate A tips per hour, state the distribution of X, with parameters b (5 marks)...