Java: An Introduction to Problem Solving and Programming plus MyProgrammingLab with Pearson eText -- Access Card Package (7th Edition)
7th Edition
ISBN: 9780133862119
Author: Walter Savitch
Publisher: PEARSON
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Chapter 2, Problem 6PP
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First study the attached code for a simple internet ping server (UDP_Ping_Server.py). You will have to
implement a corresponding client in python. The functionality provided by these programs will be similar
to the functionality provided by standard ping programs available in modern operating systems.
However, these programs will use a simpler protocol, UDP, rather than the standard Internet Control
1Message Protocol (ICMP) to communicate with each other. The ping protocol allows a client machine
to send a packet of data to a remote machine, and have the remote machine return the data back to the
client unchanged (an action referred to as echoing). Among other uses, the ping protocol allows hosts to
determine round-trip times to other machines.
Do not modify the attached server code. In this server code, 30% of the client’s packets are simulated to
be lost. The server sits in an infinite loop listening for incoming UDP packets. When a packet comes in
and if a randomized integer is…
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# We will need the following module to generate randomized lost packets
import random
from socket import *
# Create a UDP socket
# Notice the use of SOCK_DGRAM for UDP packets
serverSocket = socket (AF_INET, SOCK_DGRAM)
# Assign IP address and port number to socket
serverSocket.bind(('', 12000))
while True:
# Generate random number in the range of 0 to 10
rand = random.randint(0, 10)
# Receive the client packet along with the address it is coming from
message, address = serverSocket.recvfrom (1024)
# Capitalize the message from the client
message = message.upper()
# If rand is less is than 4, we consider the packet lost and do not respond
if rand < 4:
continue
# Otherwise, the server responds
serverSocket.sendto (message, address)
Reading Chapters 7-8 of Ralph Stair's "Fundamentals of
Information Systems" 9th Edition:
Chapter 7: Discussion questions: 4. How could you use a
community of practice (COP) to help you in your work or
studies? How would you go about identifying who to invite to
join the CoP?
Chapter 8: Discussion questions: 2. Thoroughly discuss the
pros and cons of buying versus building software.
Chapter 2 Solutions
Java: An Introduction to Problem Solving and Programming plus MyProgrammingLab with Pearson eText -- Access Card Package (7th Edition)
Ch. 2.1 - Prob. 1STQCh. 2.1 - Can a Java program have two different variables...Ch. 2.1 - Prob. 3STQCh. 2.1 - Give the declaration for two variables of type...Ch. 2.1 - Write the declaration for two variables called...Ch. 2.1 - What is the normal spelling convention for named...Ch. 2.1 - Prob. 7STQCh. 2.1 - Prob. 8STQCh. 2.1 - Prob. 9STQCh. 2.1 - Prob. 10STQ
Ch. 2.1 - Prob. 11STQCh. 2.1 - In the Programming Tip entitled Type Casting a...Ch. 2.1 - What is the output produced by the following lines...Ch. 2.1 - What is the output produced by the following lines...Ch. 2.1 - Prob. 15STQCh. 2.1 - Prob. 16STQCh. 2.1 - Consider the following statement from the program...Ch. 2.1 - Prob. 18STQCh. 2.2 - Prob. 19STQCh. 2.2 - What output is produced by the following...Ch. 2.2 - What output is produced by the following...Ch. 2.2 - What output is produced by the following...Ch. 2.2 - What output is produced by the following...Ch. 2.2 - What output is produced by the following...Ch. 2.2 - What is the value of the expression sl.equals(s2)...Ch. 2.2 - What is the value of the expression s1.equals (s2)...Ch. 2.3 - Write Java statements that will cause the...Ch. 2.3 - What is the difference between the methods...Ch. 2.3 - Write a complete Java program that reads a line of...Ch. 2.3 - Write a complete Java program that reads one line...Ch. 2.3 - What output is produced by the following...Ch. 2.4 - Prob. 32STQCh. 2.4 - What is the output produced by the following Java...Ch. 2.4 - Although it is kind of silly, state legislatures...Ch. 2.5 - Prob. 35STQCh. 2.5 - Give a Java statement that will display a dialog...Ch. 2.5 - Give a Java statement that, when executed, will...Ch. 2.5 - Prob. 38STQCh. 2.5 - Write a complete Java program that produces a...Ch. 2.5 - Write a complete Java program that behaves as...Ch. 2 - Write a program that demonstrates the approximate...Ch. 2 - Write a program that demonstrates type casting of...Ch. 2 - Write a program that demonstrates the operator %...Ch. 2 - If u = 2, v = 3, w = 5, x = 7, and y = 11, what is...Ch. 2 - What changes to the ChangeMaker program in Listing...Ch. 2 - If the int variable x contains 10, what will the...Ch. 2 - Write some Java statements that use the String...Ch. 2 - Prob. 8ECh. 2 - Prob. 9ECh. 2 - Write a single Java statement that will display...Ch. 2 - What does the Java code Scanner keyboard = new...Ch. 2 - What does the Java code Scanner keyboard = new...Ch. 2 - Prob. 13ECh. 2 - Many sports have constants embedded in their...Ch. 2 - Prob. 15ECh. 2 - Define named constants that you could use in...Ch. 2 - Write a program that reads three whole numbers and...Ch. 2 - Write a program that uses Scanner to read two...Ch. 2 - Write a program that reads the amount of a monthly...Ch. 2 - Write a program that reads a four-digit integer,...Ch. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Write a program that converts degrees from...Ch. 2 - Write a program that reads a line of text and then...Ch. 2 - Write a program that will read a line of text as...Ch. 2 - Write a program that asks the user to enter a...Ch. 2 - Write a program that determines the change to be...Ch. 2 - Write a program that reads a 4-bit binary number...Ch. 2 - Prob. 7PPCh. 2 - The Harris-Benedict equation estimates the number...Ch. 2 - Repeat any of the previous programming projects...Ch. 2 - Write a program that reads a string for a date in...Ch. 2 - It is important to consider the effect of thermal...
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