Here is the answers to the question on interworking.
1.)An IP address is a 32 bit string of ones and zeros that the networks uses to find a destination host. For most human reading a string of ones and zeros is difficult at best so to make reading the address easier the 32 bit address is broken down into four 8 bit scheme followed by a dot. This is called an octet. When in that octet all the bits are ones it is equivelent to 255 in decimal.
2.)DHCP or Dynamic Host Configuration Protocol is a way a network assigns IP address to its host (computer). Instead of an administrator assigns a IP address, An either a DHCP server or a DHCP router assigns an IP address to each computer connected to the network.
3.)Ping command or ICMP (Internet Control Message Protocol) is message that is sent out on the network and the internet to test connectivity from the source host to the destination host.
4.)The TCP/IP 4 layer model is from the top is the Application layer, Transport layer, Internet layer, Physical layer.
5.)Routers, ISP port Servers, ISP modems, modem pool, csu/dsu, modem.
6.)Trace route is a command that displays the hops or the route where the packet went through to the destination.
7.)By its domain name.
8)HTTP or Hypertext Transfer Protocol is a protocol or rules by which the web browser and the servers exchange information, where HTML or Hypertext Markup Language is the language or code that the internet uses.
9)Including the reseved address 2^32 address or 4294967296 address.
How Does The Internet Works, Rus Shuler 1998-2002
HOW DOES THE INTERNET WORKS