| Q1: | What is the difference between a protocol standard and a protocol implementation? |
|
A1:
| A protocol standard is a system of rules. A protocol implementation is a software component that applies those rules in order to provide networking capability to a computer. |
| Q2: | Why did the designers of ARPAnet want a decentralized network? |
|
A2:
| They envisioned a network that would be used for military purposes, and they didn't want to concentrate critical services in a central location that could become the focus of an attack. |
| Q3: | Why was end-node verification an important feature of ARPAnet? |
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A3:
| By design, the network was not supposed to be controlled from any central point. The sending and receiving computers, therefore, had to take charge of verifying their own communication. |
| Q4: | Why do larger networks employ name resolution? |
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A4:
| IP addresses are difficult to remember and easy to get wrong. DNS-style domain names are easier to remember because they let you associate a word or name with the IP address. |
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