Question One
Examples of the application layer, network and link layers addresses include http://wsj.com, 172.16.125.34, and 802.11respectively.
Question Two
When the computer does not know the address, it engages in server resolution where it translates the application address into network layer address. It does this by using the Domain Name Server (DNS). The computer requests the address from the name servers found on the Internet. The name servers act as a database for the addresses (Stallings 132). It uses the TCP to send a particular level packet to the DNS server that is closest.
Question Three
I agree with this primarily because the IPv4 datagram encapsulates the whole IPV6 datagram.
Question Four
When using a dial-up connection, the address is almost always different every time one connects to the internet. When using a dynamic IP address the address changes every time the user logs into the network while the static addresses do not change with every log into the network and are used by individuals who do not care much about hiding their location.
Question Five
NAT allows for a single device to sit in between the Internet and the local area network. This provides it with the ability to forward incoming traffic to the most appropriate host (Stallings 276). This device that sits in between can be a switch, a hardware firewall or a router. This means a number of computers can share similar public internet protocol.
Question Six
Connection oriented service provides the reliable transport at the session layer. It is often called a reliable service primarily because there is the guarantee that the data will arrive in the required order as it was sent. The methods sets up virtual links between the end systems in a network. In this type of transmission, both endpoints must be able to transmit data in order for them to communicate properly.
Work Cited
Stallings, William. Data and Computer Communications. New York: Pearson Education, 2013. Print.
