Which of the following statements is/are correct? I. The fragmentation is applicable for data in the datagram but not for header. II. Reassembly of the fragments must be performed at the destination because, the intermediate networks may have different maximum transmission unit (MTU) sizes. III. In the IP header, the time-to-live (TTL) field is invariable.

Is There is a no set rule for how often you should post. True or False

Use python please You are the manager of a £100 million portfolio, and you have 6 investment options: - First Mortgages: return 9% and risk score 3- Second Mortgages: return 12% and risk score 6- Personal Loans: return 15% and risk score 8- Commercial Loans: return 8% and risk score 2- Government Securities: return 6% and risk score 1- Saving Account: return 3% and risk score 0 The current regulation requires that the amount allocated in second mortgages and personal loans (combined) should not exceed the amount allocated in first mortages. Given this information: a) Ignoring the risk involved in the different investment options, what is the profit maximizing allocation of resources? What are the expected profits?  b) Now, you have to consider the risk associated with the investments. The average risk of your portfolio cannot exceed 5. What is the profit maximizing allocation of resources? What are the expected profits?  The average risk is computed as follows:Av=rixi/xi where: xi is…

Barcode Validation As you are aware, barcodes encode numbers. In the Universal Product Code system, each item is assigned a globally unique number. But not every number is a valid UPC. Why? Part of the answer is the check digit. In order to catch errors, the rightmost digit is calculated from the others. If this digit does not match its expected value, you can be assured the barcode is invalid, or has been read incorrectly. To calculate the check digit, perform the following operations modulo 10: • Sum the digits in the odd positions and multiply the result by three. • Add the digits in the even positions to the result. • Subtract the result from 10 to obtain the check digit. Your Task Given a 12-digit UPC, you will need to identify whether is is valid or invalid. The code will be provided from standard input. You simply need to print "valid" or "invalid" in response. Notes The code will be provided on a line by itself, and will consist of numerals alone. You may assume that it will be…