Probabilistic Packet Marking is used in a network. Node B received 20 packets with the same source IP address, which is 10.3.2.30. Among them, 11 packets have IP address 10.0.2.24 in the marking field, 5 packets have IP 64.3.0.18 in that field, and 4 packets have no information there. Can you tell whether they are spoofed packets? If among them, ten packets with 12.0.2.24, six packets with 8.9.0.1, three packets with 1.2.3.4, and one packet with 33.24.11.7, can you tell whether they are spoofed packets? Bob thinks that using a lower overwrite probability, say, 30% instead of 50%, this technique can support IP Traceback with more intermediate routers. Do you agree with him? Why?

When the pc version of the spreadsheet program became available, the ibm pc quickly became the top-selling personal computer?

When creating a budget, log fixed expenses before income. after income. after savings. at the top.

Write a program that uses a random number generator to generate a two digit positive integer and allows the user to perform one or more of the following operations: a. double the number. b. reverse the digits of the number. c. raise the number to the power of 2, 3, or 4. d. sum the digits of the number. e. if the number is a two-digit number, then raise the first digit to the power of the second digit. f. if the number is a three-digit number and the last digit is less than or equal to 4, then raise the first two digits to the power of the last digit. after performing an operation if the number is less than 10, add 10 to the number. also, after each operation determine if the number is prime. each successive operation should be performed on the number generated by the last operation. your program should not contain any global variables and each of these operations must be implemented by a separate function. also, your program should be menu driven. 7. (fraction calculator) write a program that