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 假设系统中有n个进程共享3台打印机，任一进程在任一时刻最多只能使用1台打印机。若用PV操作控制n个进程使用打印机，则相应信号量S的取值范围为（）；若信号量S的值为-3，则系统中有（）个进程等待使用打印机。

假设系统中有n个进程共享3台打印机，任一进程在任一时刻最多只能使用1台打印机。若用PV操作控制n个进程使用打印机，则相应信号量S的取值范围为（）；若信号量S的值为-3，则系统中有（）个进程等待使用打印机。

CRM是一套先进的管理思想及技术手段，它通过将（）进行有效的整合，最终为企业涉及到的各个领域提供了集成环境。CRM系统的四个主要模块包括（）。

CRM是一套先进的管理思想及技术手段，它通过将（）进行有效的整合，最终为企业涉及到的各个领域提供了集成环境。

 HDLC是一种（）协议，它所采用的流量控制技术是（）。

 ADSL采用（）技术在一对铜线上划分出多个信道，分别传输上行和下行数据以及话音信号。ADSL传输的最大距离可达（）米。

下图所示PKI系统结构中，负责生成和签署数字证书的是（），负责验证用户身份的是（）。

 HDLC是一种（）协议，它所采用的流量控制技术是（）。

 在RMON管理信息库中，矩阵组存储的信息是（），警报组的作用是（）。

 网管中心在进行服务器部署时应充分考虑到功能、服务提供对象、流量、安全等因素。某网络需要提供的服务包括VOD服务、网络流量监控服务以及可对外提供的Web服务和邮件服务。在对以上服务器进行部署过程中，VOD服务器部署在（）；Web服务器部署在（）；流量监控器部署在（），这四种服务器中通常发出数据流量最大的是（）。

BGP is an inter-autonomous system routing protocol; it is designed to be used between multiple autonomous ( ) . BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system （） protocols employed by the various autonomous systems. Specifically， BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol.
BGP is a real inter-autonomous system routing protocol. It imposes no constraints on the underlying Internet topology. The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing ( ) decisions at the autonomous system level may be enforced.
The key feature of the protocol is the notion of Path Attributes. This feature provides BGP with flexibility and expandability. Path （） are partitioned into well-known and optional. The provision for optional attributes allows experimentation that may involve a group of BGP （） without affecting the rest of the Internet.   New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol， for instance.

 ADSL采用（）技术在一对铜线上划分出多个信道，分别传输上行和下行数据以及话音信号。ADSL传输的最大距离可达（）米。

 网管中心在进行服务器部署时应充分考虑到功能、服务提供对象、流量、安全等因素。某网络需要提供的服务包括VOD服务、网络流量监控服务以及可对外提供的Web服务和邮件服务。在对以上服务器进行部署过程中，VOD服务器部署在（）；Web服务器部署在（）；流量监控器部署在（），这四种服务器中通常发出数据流量最大的是（）。

在RMON管理信息库中，矩阵组存储的信息是（），警报组的作用是（）。

下图所示PKI系统结构中，负责生成和签署数字证书的是（），负责验证用户身份的是（）。

试题(30)～(33) 网管中心在进行服务器部署时应充分考虑到功能、服务提供对象、流量、安全等因素。某网络需要提供的服务包括VOD服务、网络流量监控服务以及可对外提供的Web服务和邮件服务。在对以上服务器进行部署过程中，VOD服务器部署在（）；Web服务器部署在（）；流量监控器部署在（），这四种服务器中通常发出数据流量最大的是（）。

BGP is an inter-autonomous system routing protocol; it is designed to be used between multiple autonomous ( ) . BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system （） protocols employed by the various autonomous systems. Specifically， BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol.
BGP is a real inter-autonomous system routing protocol. It imposes no constraints on the underlying Internet topology. The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing ( ) decisions at the autonomous system level may be enforced.
The key feature of the protocol is the notion of Path Attributes. This feature provides BGP with flexibility and expandability. Path （） are partitioned into well-known and optional. The provision for optional attributes allows experimentation that may involve a group of BGP （） without affecting the rest of the Internet.   New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol， for instance.

 网管中心在进行服务器部署时应充分考虑到功能、服务提供对象、流量、安全等因素。某网络需要提供的服务包括VOD服务、网络流量监控服务以及可对外提供的Web服务和邮件服务。在对以上服务器进行部署过程中，VOD服务器部署在（）；Web服务器部署在（）；流量监控器部署在（），这四种服务器中通常发出数据流量最大的是（）。

BGP is an inter-autonomous system routing protocol; it is designed to be used between multiple autonomous ( ) . BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system （） protocols employed by the various autonomous systems. Specifically， BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol.
BGP is a real inter-autonomous system routing protocol. It imposes no constraints on the underlying Internet topology. The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing ( ) decisions at the autonomous system level may be enforced.
The key feature of the protocol is the notion of Path Attributes. This feature provides BGP with flexibility and expandability. Path （） are partitioned into well-known and optional. The provision for optional attributes allows experimentation that may involve a group of BGP （） without affecting the rest of the Internet.   New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol， for instance.

BGP is an inter-autonomous system routing protocol; it is designed to be used between multiple autonomous ( ) . BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system （） protocols employed by the various autonomous systems. Specifically， BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol.
BGP is a real inter-autonomous system routing protocol. It imposes no constraints on the underlying Internet topology. The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing ( ) decisions at the autonomous system level may be enforced.
The key feature of the protocol is the notion of Path Attributes. This feature provides BGP with flexibility and expandability. Path （） are partitioned into well-known and optional. The provision for optional attributes allows experimentation that may involve a group of BGP （） without affecting the rest of the Internet.   New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol， for instance.

BGP is an inter-autonomous system routing protocol; it is designed to be used between multiple autonomous ( ) . BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system （） protocols employed by the various autonomous systems. Specifically， BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol.
BGP is a real inter-autonomous system routing protocol. It imposes no constraints on the underlying Internet topology. The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing ( ) decisions at the autonomous system level may be enforced.
The key feature of the protocol is the notion of Path Attributes. This feature provides BGP with flexibility and expandability. Path （） are partitioned into well-known and optional. The provision for optional attributes allows experimentation that may involve a group of BGP （） without affecting the rest of the Internet.   New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol， for instance.