1. In the original IPv4 classful address scheme, was it possible to determine the class of an address from the address itself? Explain. 2. Write a computer program that reads an IPv4 address in dotted...

1. In the original IPv4 classful address scheme, was it possible to determine the class of an address from the address itself? Explain.

2. Write a computer program that reads an IPv4 address in dotted decimal form and determines whether the address is a multicast address.

3. Write a computer program that accepts a colon-hex address as input and displays a string of 128 bits.

4. Is the CIDR prefix 1.2.3.4 / 29 valid? Why or why not?