今天看的书是TCP IP Protocol Suite，遇到一些单词在此记录

hop

跳

How many hops can this packet travel before being dropped?
这个数据包在丢掉之前会经历多少跳？

decapsulate, encapsulate

decapsulate 解封，在计算机网络上称为“拆包”

encapsulate 封装

Each router decapsulates the IP datagram from the frame it receives, processes it, and then encapsulates it in another frame.
每个路由器从它接收的IP数据报中解封数据，处理，然后将其封装到另一个帧中。

impose

verb
UK /ɪmˈpəʊz/ US /ɪmˈpoʊz/

释义：to officially force a rule, tax, punishment, etc. to be obeyed or received
推行，强制实行。

例句：
The total size of the datagram must be less than this maximum size, which is defined by the restrictions imposed by the hardware and software used in the network.
数据报总长度必须小于由硬件和软件对其施加的最大长度的限制。

encounter

遭遇

A fragmented datagram may itself be fragmented if it encounters a network with an even smaller MTU.
一个分片的数据报如果遇到MTU（最大传输单元）更小的网络，就会继续被分片。

objection

名词：反对

An even stronger objection for reassembling packets during the transmission is the loss of efficiency it incurs
一个更有力的反对意见认为传输过程中重组数据包会导致传输效率降低。