2010年09月15日 >

来源：互联网发布：linux禅道数据库编辑：程序博客网时间：2024/05/01 07:25

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It took me a whole night to finish chapter 1. Reading English text book is such a torture, yet i know i've got to hang in there.
Since escaping from it won't change anything. You've got to do what you've got to do.

The following are some notes.

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Ping and Traceroute both use ICMP

Broadcasting: sending a UDP datagram to every host on a specified network. it is different from multicasting.

There are three types of IP addresses: unicast(destined for a single host), broadcast(destined for all hosts on a given network), and multicast(destined for a set of hosts that belong to a multicast group).

Any application can call a standardlibrary function to look up the IP address( or addresses) corresponding to a given hostname. Similarly a function is provided to do the reverse lookup -- given an IP address, look up the corresponding hostname.

TCP segment. IP datagram. frame.

A physical property of an Ethernet frame is that the size of its data must between 46 and 1500 bytes.

Always remember, I read to gain some knowledge, not for the purpose of finishing reading a book. So, don't be afraid of being "too slow". Take notes!!!