a)P(need resend)=1-P(none of 100 need resend)=1-(0.994)100 =0.4522
b)P(exactly one resend)=3C1(0.006)1(0.994)2 =0.0178
c)P(at least one message need to be resend)=1-P(none of 10 have pakets to be resend)
=1-(0.994)1000 =0.9976
A congested computer network has a 0.006 probability of losing a data packet and packet losses...
, or losing a data packet and packet losses are independent events A lost packet must be resert Rond your answers to fordernal places (·g. 98 7654). (a) What is the probability that an e-mail message with 100 packets will need any resent? (b) What is the probability that an e-mail message with 3 packets will need exactly one to be resent (c) If 10 e-mail are sent, each with 100 packets, what is the probability that at least one...
Problem # 3. A pair of packets is sent over the network to an end user. It is known that the first packet will be lost with probability 1/3. If the first packet is received, then the second packet is lost with probability 1/6. If the first packet is lost then the second packet is lost with probability 2/3. Find the probabilities of the events: a) Exactly one packet is received by the end user. b) Both packets are lost.
3. A data packet containing 18 bits is sent over a noisy communication channel. The probability that the k-th bit is received correctly at the destination is 1 - p, and, therefore, it is erased with probability p. Erasures are independent over time. (a) 1 pt What is the probability that exactly 7 bits are erased from this packet? (b) 1 pt What is the maximum value of p such that the probability that the packet is received correctly (i.e.,...
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...
An e-mail message can travel through one of two server routes. The probability of transmission error in each of the servers and the proportion of messages that travel each route are shown in the following table. Assume that the servers are independent. A message must travel through Server 1 and 2 for Route 1 or through Server 3 and 4 for Route 2 (i.e., cannot travel through just one of the servers in the route). Percentage of Messages Probability of...
I need help with this assignment, please; Programming Assignment 3: UDP Pinger Lab In this lab, you will study a simple Internet ping server written in the Java language, and implement a corresponding client. The functionality provided by these programs is similar to the standard ping programs available in modern operating systems, except that they use UDP rather than Internet Control Message Protocol (ICMP) to communicate with each other. (Java does not provide a straightforward means to interact with ICMP.)...
Question 1 The size of the datagram is determined by the application that sends the data. Allowing the size of datagrams to vary makes IP adaptable to a variety of applications. True False Question 2 What is the conceptual network boundary, and where is it located within the protocol stack? Is the transition area between digital and analog signals and can be found between layer 2 and layer 3 of the protocol stack. Identifies application direct messaging and is formed...
check my answers for Networking I came up with these answers, can check my answers Question 1: General What data rate is needed to transmit an uncompressed 4" x 6" photograph every second with a resolution of 1200 dots per inch and 24 bits per dot (pixel)? 691,200 kb/s 28.8 kb/s 8.29 Mb/s 829 Mb/s Question 2: Layering "Layering" is commonly used in computer networks because (check all that apply): -It forces all network software to be written in ‘C’....
1. To which of the following subnets does IP address 225.3.2.22 belong? 225.3.2.0/24 225.3.2.22/24 225.2.3.0/24 225.0.0.0/24 none of the above Question 2 On which of the following devices does the transport layer NOT run? laptop router cellphone A, B and C none of the above Question 3 What is the source address contained in the discover message sent by a host that is wanting to obtain an IP address? 255.255.255.255 0.0.0.0 the IP address of the server the last IP...
Project 4-3: In the following steps, you will learn more about the PING (Packet Internet Grouper) utility, which can be used on a network running IPv4 to verify that TCP/IP is configured correctly and communicating with the network. A ping test is typically the first thing network professionals try when troubleshooting a TCP/IP connection problem. For this project, you can use any type of workstation that's running TCP/IPv4, preferably one connected to the Internet. The output described in the following...