正点原子北斗GPS ATK-1218-BD参考手册
包含SkyTraq binary协议简介和NMEA-0183协议简介
2024-04-26 13:36:45
1.47MB
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本参考手册针对应用开发，提供关于如何使用小容量、中容量和大容量的STM32F101xx、
STM32F102xx或者STM32F103xx微控制器的存储器和外设的详细信息。在本参考手册中
STM32F101xx、STM32F102xx和STM32F103xx被统称为STM32F10xxx
2024-04-16 11:31:59
9.29MB
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第一章：DNS 的起源和背景.................................................................................................................1
第二章：DNS 的体系结构和原理.........................................................................................................3
2.1 域名空间和体系结构....................................................................................................................3
2.2 域和域名.......................................................................................................................................3
2.3 区和域的不同...............................................................................................................................4
2.4 域名服务器的类型........................................................................................................................5
2.4.1 主域名服务器.........................................................................................................................6
2.4.2 辅域名服务器（次级域名服务器） ....................................................................................6
2.4.3 隐藏服务器（stealth server） ..............................................................................................6
2.4.4 高速缓存域名服务器（caching only server）.....................................................................6
2.4.5 转发服务器（forwarding server） .......................................................................................6
2.5 DNS 基本原理...............................................................................................................................6
第三章：建立DNS 系统服务................................................................................................................8
3.1 DNS 系统的来源...........................................................................................................................8
3.2 系统的要求...................................................................................................................................8
3.2.1 硬件需求...............................................................................................................................8
3.2.2 CPU 需求...............................................................................................................................8
3.2.3 内存需求...............................................................................................................................8
3.2.4 域名服务器的高配置问题....................................................................................................8
3.2.5 支持操作系统........................................................................................................................9
3.2.6 获得bind 9.2.3........................................................................................................................9
第四章：域名服务器配置....................................................................................................................10
4.1 配置实例....................................................................................................................................10
4.1.1 高速缓冲域名服务器（Caching-Only DNS） ...................................................................10
4.1.2 授权的域名服务器（Authoritative-only DNS） ................................................................10
4.2 负载分担....................................................................................................................................11
4.3 通告（NOTIFY）........................................................................................................................12
4.4 域名服务器的运行.....................................................................................................................12
4.4.1 域名服务器后台进程工具的使用......................................................................................12
4.4.1.1 诊断工具.......................................................................................................................................12
4.4.1.2 管理工具......................................................................................................................................13
4.4.2 信号（Signals） ..................................................................................................................16
第五章 高级理念.................................................................................................................................17
5.1 动态更新....................................................................................................................................17
5.1.1 日志文件（journal file） ....................................................................................................17
5.2 增量域传输（IXFR）................................................................................................................17
5.3 拆分DNS...................................................................................................................................18
5.4 TSIG（信号安全处理） .............................................................................................................21
5.4.1 为每对主机产生共享密匙..................................................................................................21
2024-03-31 23:05:50
625KB
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Q系列MELSEC通信协议参考手册，采用 MC 协议进行通讯，用 ASCII 代码进行通讯 读出内部继电器
2024-03-28 21:33:50
6.81MB