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Chapter 2
| 1: | How can TCP/IP satisfy the network performance requirements of an unlimited number of software applications? |
| A1: | Answer: TCP/IP satisfies the network performance requirements of an unlimited number of software applications through the use of two mechanisms. First, it relies on open standards to ensure that everyone who writes software knows how to make their applications work with TCP/IP. Second, it doesn't try to work with each individual application. Rather, by analyzing the network performance requirements of applications, it merely supports two main applications types. Those two types are differentiated by their network performance requirements. |
| 2: | What are the two basic network performance requirements imposed by software applications? |
| A2: | Answer: Virtually all applications fall into one of two categories for network performance. Applications either require timely delivery or reliable delivery of their data. |
| 3: | Is TCP/IP a tool designed for business or pleasure? |
| A3: | Answer: Both. TCP/IP is a network communications protocol suite that supports literally every application that needs to communicate through a network. TCP/IP focuses on meeting applications' needs for network performance rather than on the applications themselves. Consequently, it is equally adept at supporting games as it is mission-critical business applications. |
| 4: | For what do you use TCP/IP? |
| A4: | Answer: Anyone who uses the Internet is, by default, also using TCP/IP. It's almost impossible to count all the ways people use the Internet, but surfing web pages, tracking stock portfolios, downloading tunes, e-mailing, chatting, and instant messaging are all popular applications that rely on TCP/IP. It also is used quite extensively in home and professional networks and can support filesharing, printing, and countless other business applications. |
| 5: | What does the term reliable delivery mean? |
| A5: | Answer: Reliable delivery is TCP/IP's mechanism that guarantees that application data will be delivered safely to its intended destination. That guarantee means applications can rely upon data being delivered, but no guarantees are made regarding when it will be delivered. Network congestion and other problems might force TCP/IP to try repeatedly before successfully delivering the data. |
| 6: | What does the term best-effort delivery mean? |
| A6: | Answer: Best-effort delivery is TCP/IP's mechanism to support applications that have timeliness requirement but do not require reliable data delivery. TCP/IP makes one attemptits best effortto deliver data. If it doesn't get delivered, TCP/IP and the application agree to move on to the next piece of data rather than waste time. |
