Computers cache the name-to-IP mapping for a certain period of time, known as the time to live (TTL), to reduce overall response time.
计算机将这个名称缓存到IP映射一段时间，这个时间段称为timetolive (ttl)，以减少总响应时间。
This change must be made at least one TTL period before you intend to change the address, because computers get the TTL along with the name-to-IP mapping.
在您打算更改地址之前，必须提前至少1个TTL时间段执行更改，因为计算机将把TTL以及名称缓存到ip映射。
Heidemann's IP mapping also revealed that while the bulk of those IPv4 addresses have been handed out, a majority of them — roughly 85 percent — aren't actually in use.
Heidemann的IP映射也反映出虽然这些IPv4地址已经分配出去了，但是大部分——大约有百分之八十五——事实上并没有的到使用。
The translation table now has a mapping of the computer's non-routable IP address matched with one of the unique IP addresses.
现在，地址转换表就拥有了这台计算的不可路由IP地址到一个唯一 IP地址的匹配映射。
Geographic DNS improves scalability by mapping a domain name to different IP addresses, depending on the client's geographic location.
地理DNS根据用户所处的地理位置，通过把域名映射到多个不同的IP地址提高可扩展性。
An example of the contents of the file, in this case a 'forward' zone, primarily mapping names to IP addresses, are shown in Listing 3.
清单3显示了该文件的内容示例(在此例中为一个“转发”区域)，其主要将名称映射到IP地址。
For instance, you might want more control over the mapping of virtual machines to physical machines, or you might want to be deterministic about the assignment of IP addresses to virtual machines.
例如，可能希望进一步控制虚拟机到物理机器的映射，或者希望更确定地把IP地址分配给虚拟机。
The SPECjAppServer application USES the IP addresses to host names mapping in the OS hosts file to resolve the database, emulator, and delivery system.
SPECjAppServer应用程序使用OS主机文件中的IP地址到主机名映射来解析数据库、仿真器和交付系统。
Be sure to have automated, scripted re-mapping of IP addresses to handle cases when a data center goes down.
请确保提供了自动化、脚本化的IP地址重映射功能，以便在数据中心不起作用时处理案例。
To make future communications more efficient, the IP address and hardware address mapping of the source host is also included in the request frame.
为了使下一步的通讯更有效，发送端主机的IP地址和硬件地址的映象也包含在请求帧中。
However, the round robin DNS strategy solves this predicament, by mapping your domain name to more than one IP address.
然而，战略的DNS轮循解决这种困境，你的域名映射不止一个IP地址。
In order to solve the problem, it is necessary for network administrator to establish the regular tables of IP allocation and IP-MAC mapping and be able to make real-time monitor.
为了解决这一问题，网络管理员有必要建立规范的IP地址分配表、IP地址和硬件地址(MAC)登记表，并且做到实时监控。
In order to solve the problem, it is necessary for network administrator to establish the regular tables of IP allocation and IP-MAC mapping and be able to make real-time monitor.
为了解决这一问题，网络管理员有必要建立规范的IP地址分配表、IP地址和硬件地址(MAC)登记表，并且做到实时监控。
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