●配置 WWW 服务器是 UNIX 操作系统平台的重要工作之一，而 Apache 是目前应用最为广泛的 Web 服务器产品之一， (59) 是 Apache 的主要配置文件。

●SNMPv3把对网络协议的安全威胁分为 (64) 两类。

●在NetWare网络中，客户需要访问某个类型的服务器时，首先要发送一个 (65) 广播报文来寻找服务器。

●The purpose of the requirements definition phase is to produce a clear，complete，consistent，and testable (66) of the technical requirements for the software product．

●Flow control is a function that prevents network congestion by ensuring that (71) do not overwhelm (72) with datA．There are three commonly used methods for handling network congestion ． (73) is used by network devices to temporarily store bursts of excess data in memory until they can be processed． (74) are used by receiving devices to help prevent their buffers from overflowing ． (75) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted．

●用户最关心的存储器的性能主要有 (1) 。关于常用的只读存储器ROM的正确描述是： (2) 只能由生产厂家在生产芯片的过程中写入，用户无法改写。 (3) 允许用户写入一次，以后只能读出，不能改写。 (4) 不仅可以由用户写入，而且允许用紫外线擦除已经写入的内容。 (5) 可以直接用电信号按字节改写。