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Concept explainers
TCP:
TCP stands for Transmission Control protocol. It is the most prominent used protocol on the internet. Establishing a path between the source and the destination represents the connection steering noted as the reliable service for sending message provided by TCP.
For example: If man A sends a message to man B, then man B acknowledges that messages and sent the acknowledgement to man A, then another acknowledgement comes from man A to man B.
UDP:
UDP stands for User Datagram protocol. It is also one of the most prominent used protocols on the internet. It generally provides unreliable service of sending messages.
For example: If man A sends a message to man B, but here the man A is not confirmed that does the man B has received his message or not. In this kind of protocol, message can take any path to reach its destination, there is no specific route for the transfer of message also there could be a possibility of losing message on the way of transfer.
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Chapter 4 Solutions
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
- whats for dinner? pleasearrow_forwardConsider the follow program that prints a page number on the left or right side of a page. Define and use a new function, isEven, that returns a Boolean to make the condition in the if statement easier to understand. ef main() : page = int(input("Enter page number: ")) if page % 2 == 0 : print(page) else : print("%60d" % page) main()arrow_forwardWhat is the correct python code for the function def countWords(string) that will return a count of all the words in the string string of workds that are separated by spaces.arrow_forward
- Consider the following program that counts the number of spaces in a user-supplied string. Modify the program to define and use a function, countSpaces, instead. def main() : userInput = input("Enter a string: ") spaces = 0 for char in userInput : if char == " " : spaces = spaces + 1 print(spaces) main()arrow_forwardWhat is the python code for the function def readFloat(prompt) that displays the prompt string, followed by a space, reads a floating-point number in, and returns it. Here is a typical usage: salary = readFloat("Please enter your salary:") percentageRaise = readFloat("What percentage raise would you like?")arrow_forwardassume python does not define count method that can be applied to a string to determine the number of occurances of a character within a string. Implement the function numChars that takes a string and a character as arguments and determined and returns how many occurances of the given character occur withing the given stringarrow_forward
- Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, a) Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key. b) Mention the relationship between the Order and Customer Entities. You can use the following: 1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M c) Is there a direct relationship that exists between Store and Customer entities? Answer Yes/No? d) Which of the 4 Entities mention in the diagram can have a recursive relationship? e) If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type?arrow_forwardNo aiarrow_forwardGiven the dependency diagram of attributes {C1,C2,C3,C4,C5) in a table shown in the following figure, (the primary key attributes are underlined)arrow_forward
- What are 3 design techniques that enable data representations to be effective and engaging? What are some usability considerations when designing data representations? Provide examples or use cases from your professional experience.arrow_forward2D array, Passing Arrays to Methods, Returning an Array from a Method (Ch8) 2. Read-And-Analyze: Given the code below, answer the following questions. 2 1 import java.util.Scanner; 3 public class Array2DPractice { 4 5 6 7 8 9 10 11 12 13 14 15 16 public static void main(String args[]) { 17 } 18 // Get an array from the user int[][] m = getArray(); // Display array elements System.out.println("You provided the following array "+ java.util.Arrays.deepToString(m)); // Display array characteristics int[] r = findCharacteristics(m); System.out.println("The minimum value is: " + r[0]); System.out.println("The maximum value is: " + r[1]); System.out.println("The average is: " + r[2] * 1.0/(m.length * m[0].length)); 19 // Create an array from user input public static int[][] getArray() { 20 21 PASSTR2222322222222222 222323 F F F F 44 // Create a Scanner to read user input Scanner input = new Scanner(System.in); // Ask user to input a number, and grab that number with the Scanner…arrow_forwardGiven the dependency diagram of attributes C1,C2,C3,C4,C5 in a table shown in the following figure, the primary key attributes are underlined Make a database with multiple tables from attributes as shown above that are in 3NF, showing PK, non-key attributes, and FK for each table? Assume the tables are already in 1NF. Hint: 3 tables will result after deducing 1NF -> 2NF -> 3NFarrow_forward
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