2.1.31. 获取用键盘输入常用的两种方法 方法 1：通过 Scanner Scanner input = new Scanner(Syste...

--Use the NOT keyword to select all records where City is NOT "Berlin" S...

NAT: network address translation -motivation: local network uses just on...

two types of links: 1. point to point 2.broadcast(shared wire or medium)...

-Parity Checking ( odd/even parity ) single bit parity two-dimensional b...

ARP: address resolution protocol地址解析协议，用于实现从 IP 地址到 MAC 地址的映射，即询问目标IP对应的...