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内存按字节编址，地址从A4000H到CBFFFH，共有 (1) B。若用存储容量为16K×8bit的存储器芯片构成该内存，至少需要 (2) 片。

容量为64块的Cache采用组相联方式映像，字块大小为128个字，每4块为一组。若主存容量为4096块，且以字编址，那么主存地址应为 (1) 位，主存区号应为 (2) 位。

内存按字节编址，地址从A4000H到CBFFFH，共有 (1) B。若用存储容量为16K×8bit的存储器芯片构成该内存，至少需要 (2) 片。

容量为64块的Cache采用组相联方式映像，字块大小为128个字，每4块为一组。若主存容量为4096块，且以字编址，那么主存地址应为 (1) 位，主存区号应为 (2) 位。

下图所示的防火墙结构属于（）。

虚拟存储管理系统的基础是程序的 (1) 理论，这个理论的基本含义是指程序执行时往往会不均匀地访问主存储器单元。根据这个理论，Denning提出了工作集理论。工作集是进程运行时被频繁地访问的页面集合。在进程运行时，如果它的工作集页面都在 (2) 内，能够使该进程有效地运行，否则会出现频繁的页面调入/调出现象。

光纤通信中使用的复用方式是 (1) 。E1载波把32个信道按 (2) 方式复用在一条2.048Mbit/s的高速信道上，每条话音信道的数据速率是 (3) 。

虚拟存储管理系统的基础是程序的 (1) 理论，这个理论的基本含义是指程序执行时往往会不均匀地访问主存储器单元。根据这个理论，Denning提出了工作集理论。工作集是进程运行时被频繁地访问的页面集合。在进程运行时，如果它的工作集页面都在 (2) 内，能够使该进程有效地运行，否则会出现频繁的页面调入/调出现象。

用户A与用户B通过卫星链路通信时，传播延迟为540ms,假设数据速率是64Kbit/s，帧长4000bit,若采用停等控制协议通信，则最大链路利用率为 (1) ；若采用后退N帧ARQ协议通信，发送窗口为8，则最大链路利用率可以达到 (2) 。

光纤通信中使用的复用方式是 (1) 。E1载波把32个信道按 (2) 方式复用在一条2.048Mbit/s的高速信道上，每条话音信道的数据速率是 (3) 。

用户A与用户B通过卫星链路通信时，传播延迟为540ms,假设数据速率是64Kbit/s，帧长4000bit,若采用停等控制协议通信，则最大链路利用率为 (1) ；若采用后退N帧ARQ协议通信，发送窗口为8，则最大链路利用率可以达到 (2) 。

光纤通信中使用的复用方式是 (1) 。E1载波把32个信道按 (2) 方式复用在一条2.048Mbit/s的高速信道上，每条话音信道的数据速率是 (3) 。

IETF定义的多协议标记交换(MPLS)是一种第3层交换技术，MPLS网络由 (1) 组成，负责为网络流添加删除标记的是 (2) 。

IP交换是一种利用交换硬件快速传送IP分组的技术。一台IP交换机由 (1) 3部分组成。IP交换机初始化后为每一个物理连接建立一个默认的 (2) ，相邻的IP交换机通过这些默认通道交换路由信息和数据分组。为了进行第3层路由选择，IP交换控制器必须根据 (3) 等信息对网络数据流进行分类并加上数据流描述符。

数字证书采用公钥体制进行加密和解密。每个用户有一个私钥，用它进行 (1) ；同时每个用户还有一个公钥，用于 (2) 。X.509标准规定，数字证书由 (3) 发放，将其放入公共目录中，以供用户访问。X.509数字证书的签名字段是指 (4) ，如果用户UA从A地的发证机构取得了证书，用户UB从B地的发证机构取得了证书，那么 (5) 。

DHCP协议的功能是 (1) 。在Linux中提供DHCP服务的程序是 (2) ； DHCP服务将主机的MAC地址和IP地址绑定在一起的方法是在 (3) 文件中添加"host主机名hardware Ethernet xx.xx.xx.xx.xx.xx fixed-address 192.168.0.9"配置项；创建 DHCP租用文件的命令是 (4) ；通过运行 (5) 命令可以设置在操作系统启动时自动运行DHCP服务。

以太网交换机根据 (1) 转发数据包。访问交换机的方式有多种，配置一台新的交换机时可以 (2) 进行访问。在键入交换机命令时可使用缩写形式，在Switch#模式下，如果键入"con"，则表示 (3) 。

在Windows 2000操作系统中，配置IP地址的命令是 (1) 。若用ping命令来测试本机是否安装了TCP/IP协议，则正确的命令是 (2) 。如果要列出本机当前建立的连接，可以使用的命令是 (3) 。

下面有关NTFS文件系统优点的描述中， (1) 是不正确的。要把FAT32分区转换为NTFS分区，并且保留原分区中的所有文件，不可行的方法是 (2) 。

IETF定义的多协议标记交换(MPLS)是一种第3层交换技术，MPLS网络由 (1) 组成，负责为网络流添加删除标记的是 (2) 。

IP交换是一种利用交换硬件快速传送IP分组的技术。一台IP交换机由 (1) 3部分组成。IP交换机初始化后为每一个物理连接建立一个默认的 (2) ，相邻的IP交换机通过这些默认通道交换路由信息和数据分组。为了进行第3层路由选择，IP交换控制器必须根据 (3) 等信息对网络数据流进行分类并加上数据流描述符。

以太网交换机根据 (1) 转发数据包。访问交换机的方式有多种，配置一台新的交换机时可以 (2) 进行访问。在键入交换机命令时可使用缩写形式，在Switch#模式下，如果键入"con"，则表示 (3) 。

在Windows 2000操作系统中，配置IP地址的命令是 (1) 。若用ping命令来测试本机是否安装了TCP/IP协议，则正确的命令是 (2) 。如果要列出本机当前建立的连接，可以使用的命令是 (3) 。

DHCP协议的功能是 (1) 。在Linux中提供DHCP服务的程序是 (2) ； DHCP服务将主机的MAC地址和IP地址绑定在一起的方法是在 (3) 文件中添加"host主机名hardware Ethernet xx.xx.xx.xx.xx.xx fixed-address 192.168.0.9"配置项；创建 DHCP租用文件的命令是 (4) ；通过运行 (5) 命令可以设置在操作系统启动时自动运行DHCP服务。

数字证书采用公钥体制进行加密和解密。每个用户有一个私钥，用它进行 (1) ；同时每个用户还有一个公钥，用于 (2) 。X.509标准规定，数字证书由 (3) 发放，将其放入公共目录中，以供用户访问。X.509数字证书的签名字段是指 (4) ，如果用户UA从A地的发证机构取得了证书，用户UB从B地的发证机构取得了证书，那么 (5) 。

下面有关NTFS文件系统优点的描述中， (1) 是不正确的。要把FAT32分区转换为NTFS分区，并且保留原分区中的所有文件，不可行的方法是 (2) 。

以太网交换机根据 (1) 转发数据包。访问交换机的方式有多种，配置一台新的交换机时可以 (2) 进行访问。在键入交换机命令时可使用缩写形式，在Switch#模式下，如果键入"con"，则表示 (3) 。

IP交换是一种利用交换硬件快速传送IP分组的技术。一台IP交换机由 (1) 3部分组成。IP交换机初始化后为每一个物理连接建立一个默认的 (2) ，相邻的IP交换机通过这些默认通道交换路由信息和数据分组。为了进行第3层路由选择，IP交换控制器必须根据 (3) 等信息对网络数据流进行分类并加上数据流描述符。

DHCP协议的功能是 (1) 。在Linux中提供DHCP服务的程序是 (2) ； DHCP服务将主机的MAC地址和IP地址绑定在一起的方法是在 (3) 文件中添加"host主机名hardware Ethernet xx.xx.xx.xx.xx.xx fixed-address 192.168.0.9"配置项；创建 DHCP租用文件的命令是 (4) ；通过运行 (5) 命令可以设置在操作系统启动时自动运行DHCP服务。

在Windows 2000操作系统中，配置IP地址的命令是 (1) 。若用ping命令来测试本机是否安装了TCP/IP协议，则正确的命令是 (2) 。如果要列出本机当前建立的连接，可以使用的命令是 (3) 。

数字证书采用公钥体制进行加密和解密。每个用户有一个私钥，用它进行 (1) ；同时每个用户还有一个公钥，用于 (2) 。X.509标准规定，数字证书由 (3) 发放，将其放入公共目录中，以供用户访问。X.509数字证书的签名字段是指 (4) ，如果用户UA从A地的发证机构取得了证书，用户UB从B地的发证机构取得了证书，那么 (5) 。

在缺省配置的情况下，交换机的所有端口 (1) 。连接在不同交换机上的、属于同一VLAN的数据帧必须通过 (2) 传输。

许多通信需要进行组播，以下选项中不采用组播协议的应用是 (1) 。在IPv4中把 (2) 类地址作为组播地址。

DHCP协议的功能是 (1) 。在Linux中提供DHCP服务的程序是 (2) ； DHCP服务将主机的MAC地址和IP地址绑定在一起的方法是在 (3) 文件中添加"host主机名hardware Ethernet xx.xx.xx.xx.xx.xx fixed-address 192.168.0.9"配置项；创建 DHCP租用文件的命令是 (4) ；通过运行 (5) 命令可以设置在操作系统启动时自动运行DHCP服务。

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or Hubs, which just move the bits from one network to an identical network. One layer up we find bridges and swiches, which operate at data link layer. They can accept (2) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two netwoks. If two networks have (3) network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between the two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Internet e-mail and X. 400 e-mail must (5) the e-mail message and change various header fields.

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (1) of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (2) that it must meet. The starting point is usually a set of high-level requirements from the (3) that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and the defines (4) showing how the system will be operated, publishes the system and operation concept documents, and conducts a system concept review(SCR).
Following the SCR, the team derives (5) requirements for the system from the high level requirements and the system operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirements.

在缺省配置的情况下，交换机的所有端口 (1) 。连接在不同交换机上的、属于同一VLAN的数据帧必须通过 (2) 传输。

数字证书采用公钥体制进行加密和解密。每个用户有一个私钥，用它进行 (1) ；同时每个用户还有一个公钥，用于 (2) 。X.509标准规定，数字证书由 (3) 发放，将其放入公共目录中，以供用户访问。X.509数字证书的签名字段是指 (4) ，如果用户UA从A地的发证机构取得了证书，用户UB从B地的发证机构取得了证书，那么 (5) 。

许多通信需要进行组播，以下选项中不采用组播协议的应用是 (1) 。在IPv4中把 (2) 类地址作为组播地址。

DHCP协议的功能是 (1) 。在Linux中提供DHCP服务的程序是 (2) ； DHCP服务将主机的MAC地址和IP地址绑定在一起的方法是在 (3) 文件中添加"host主机名hardware Ethernet xx.xx.xx.xx.xx.xx fixed-address 192.168.0.9"配置项；创建 DHCP租用文件的命令是 (4) ；通过运行 (5) 命令可以设置在操作系统启动时自动运行DHCP服务。

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or Hubs, which just move the bits from one network to an identical network. One layer up we find bridges and swiches, which operate at data link layer. They can accept (2) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two netwoks. If two networks have (3) network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between the two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Internet e-mail and X. 400 e-mail must (5) the e-mail message and change various header fields.

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (1) of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (2) that it must meet. The starting point is usually a set of high-level requirements from the (3) that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and the defines (4) showing how the system will be operated, publishes the system and operation concept documents, and conducts a system concept review(SCR).
Following the SCR, the team derives (5) requirements for the system from the high level requirements and the system operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirements.

数字证书采用公钥体制进行加密和解密。每个用户有一个私钥，用它进行 (1) ；同时每个用户还有一个公钥，用于 (2) 。X.509标准规定，数字证书由 (3) 发放，将其放入公共目录中，以供用户访问。X.509数字证书的签名字段是指 (4) ，如果用户UA从A地的发证机构取得了证书，用户UB从B地的发证机构取得了证书，那么 (5) 。

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or Hubs, which just move the bits from one network to an identical network. One layer up we find bridges and swiches, which operate at data link layer. They can accept (2) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two netwoks. If two networks have (3) network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between the two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Internet e-mail and X. 400 e-mail must (5) the e-mail message and change various header fields.

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (1) of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (2) that it must meet. The starting point is usually a set of high-level requirements from the (3) that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and the defines (4) showing how the system will be operated, publishes the system and operation concept documents, and conducts a system concept review(SCR).
Following the SCR, the team derives (5) requirements for the system from the high level requirements and the system operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirements.

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or Hubs, which just move the bits from one network to an identical network. One layer up we find bridges and swiches, which operate at data link layer. They can accept (2) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two netwoks. If two networks have (3) network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between the two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Internet e-mail and X. 400 e-mail must (5) the e-mail message and change various header fields.

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (1) of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (2) that it must meet. The starting point is usually a set of high-level requirements from the (3) that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and the defines (4) showing how the system will be operated, publishes the system and operation concept documents, and conducts a system concept review(SCR).
Following the SCR, the team derives (5) requirements for the system from the high level requirements and the system operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirements.

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or Hubs, which just move the bits from one network to an identical network. One layer up we find bridges and swiches, which operate at data link layer. They can accept (2) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two netwoks. If two networks have (3) network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between the two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Internet e-mail and X. 400 e-mail must (5) the e-mail message and change various header fields.

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (1) of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (2) that it must meet. The starting point is usually a set of high-level requirements from the (3) that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and the defines (4) showing how the system will be operated, publishes the system and operation concept documents, and conducts a system concept review(SCR).
Following the SCR, the team derives (5) requirements for the system from the high level requirements and the system operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirements.