单选题
单选题
单选题按 (11) 方式显示文档时，其显示的效果与打印的效果相同。
单选题在Token Bus与Token Ring的讨论中，以下 (21) 是环维护工作需要完成的任务。 Ⅰ．环初始化 Ⅱ．用户使用权限 Ⅲ．新结点加入与撤出环 Ⅳ．优先级 Ⅴ．操作系统版本更新
单选题以下不属于网络安全控制技术的是 (45) 。
单选题 (66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed,length bit string. (67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection. (68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an opt~electrical converter and the final segment is a shared coaxial cable. (69) is a device used to connect two separate network that use different communication protocol. (70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.
单选题有关DHCP(Dynamic Host Configuration Protocol)协议，陈述正确的是 (61) 。
单选题
单选题在WC网络系统结构中，用户计算机连入Internet无须拨号，通常采用 (27) 上网方式。
单选题
单选题A．SOAP B．UDDI C．XML Schema D．HTTPS
单选题语音信道带宽为4000Hz，调制为4种码元，根据奈奎斯特定理，信道波特率为______，数据速率为______。
单选题目前广泛使用的CA证书标准是 (57) 。 A．X.500 B．X.509 C．X.501 D．X.300
单选题在安全基本要素中，______体现的是得到授权的实体可以在需要时访问数据。 A．机密性 B．完整性 C．可用性 D．可控性
单选题IPv6地址为______位。 A．128 B．64 C．48 D．32
单选题 与十进制数26.34375等值的二进制数是{{U}} {{U}} 34
{{/U}} {{/U}}，八进制数是{{U}} {{U}} 35 {{/U}} {{/U}}。
单选题Linux系统可以通过手工编辑配置文件达到对系统进行配置的目的，例如将/etc/inted.conf文件中“#FTP Stream TCP nowait root/usr/sbin/tcpd in.ftpd -1 -a”前的“#”去掉就可以开启FTP服务。修改 (39) 文件可对允许访问FTP服务的主机范围进行限制。
单选题1.40.0/25可使用的地址数有______个。 A．254 B．256 C．200 D．126
单选题WAP uses (71) , which includes the Handheld Device Markup Language (HDML) developed by Phone.com. WML can also trace its roots to eXtensible Markup Language (XML). A markup language is a way of adding information to your (72) that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language. (73) HTML, WML is considered a meta language. Basically, this means that in addition to providing predefined (74) , WML lets you design your own markup language (75) . WAP also allows the use of standard Internet protocols such as UDP, IP and XML.