位于CPU与主存之间的高速缓冲存储器（Cache)用于存放部分主存数据的拷贝， 主存地址与Cache地址之间的转换工作由（1)完成。

内存单元按字节编址，地址0000A000H〜0000BFFFH共有（2)个存储单元。

相联存储器按（3)访问。

若CPU要执行的指令为：MOV R1, #45 (即将数值45传送到寄存器R1中），则该指令中采用的寻址方式为（4)。

数据流图（DFD)对系统的功能和功能之间的数据流进行建模，其中顶层数据流图描述了系统的（5)。

以下关于类继承的说法中，错误的是（6) 。

下图是一个软件项目的活动图，其中顶点表示项目里程碑，连接顶点的边表示活动， 边上的值表示完成活动所需要的时间，则（7)在关键路径上。

软件开发的增量模型（8)。

假设某软件公司与客户签订合同开发一个软件系统，系统的功能有较清晰的定义， 且客户对交付时间有严格要求，则该系统的开发最适宜采用（9)。

中国企业M与美国公司L进行技术合作，合同约定M使用一项在有效期内的美国专利，但该项美国专利未在中国和其他国家提出申请。对于M销售依照该专利生产的产品，以下叙述正确的是 （10) 。

网络中存在各种交换设备，下面的说法中错误的是（11)。

通过以太网交换机连接的一组工作站（12)。

E1载波的数据速率是（13) Mb/s, T1载波的数据速率是（14) Mb/s。

E1载波的数据速率是（13) Mb/s, T1载波的数据速率是（14) Mb/s。

设信道带宽为3400Hz,采用PCM编码，采样周期为125us，每个样本量化为256个等级，则信道的数据速率为（15)。

曼彻斯特编码的效率是（16) %, 4B/5B编码的效率是（17) %。

曼彻斯特编码的效率是（16) %, 4B/5B编码的效率是（17) %。

ARP协议的作用是（18)，它的协议数据单元封装在（19)中传送。ARP请求是采用（20)方式发送的。

ARP协议的作用是（18)，它的协议数据单元封装在（19)中传送。ARP请求是采用（20)方式发送的。

ARP协议的作用是（18)，它的协议数据单元封装在（19)中传送。ARP请求是采用（20)方式发送的。

RIP是一种基于（21)算法的路由协议，一个通路上最大跳数是（22)，更新路由表的原则是到各个目标网络的（23)。

RIP是一种基于（21)算法的路由协议，一个通路上最大跳数是（22)，更新路由表的原则是到各个目标网络的（23)。

RIP是一种基于（21)算法的路由协议，一个通路上最大跳数是（22)，更新路由表的原则是到各个目标网络的（23)。

OSPF协议使用（24)报文来保持与其邻居的连接。下面关于OSPF拓扑数据库的描述中，正确的是（25)。

OSPF协议使用（24)报文来保持与其邻居的连接。下面关于OSPF拓扑数据库的描述中，正确的是（25)。

TCP协议使用（26)次握手机制建立连接，当请求方发出SYN连接请求后，等待对方回答（27),这样可以防止建立错误的连接。

TCP协议使用（26)次握手机制建立连接，当请求方发出SYN连接请求后，等待对方回答（27),这样可以防止建立错误的连接。

采用DHCP分配IP地址无法做到（28)，当客户机发送dhcpdiscover报文时采用(29)方式发送。

采用DHCP分配IP地址无法做到（28)，当客户机发送dhcpdiscover报文时采用(29)方式发送。

客户端登录FTP服务器后使用 （30)命令来上传文件。

SMTP传输的邮件报文采用（31)格式表示。

在下列选项中，属于IIS 6.0提供的服务组件是（32)。

与route print具有相同功能的命令是（33)。

下面的Linux命令中，能关闭系统的命令是（34)。

在Linux中，DNS服务器的配置文件是（35)。

在Linux中，可以利用（36)命令来终止某个进程。

DNS服务器中提供了多种资源记录，其中（37)定义了区域的邮件服务器及其优先级。

某用户正在Internet浏览网页，在Windows命令窗口中输入（38)命令后得到下图所示的结果。

若采用抓包器抓获某一报文的以太帧如下图所示，该报文是（39)。

某用户正在Internet浏览网页，在Windows命令窗口中输入（38)命令后得到下图所示的结果。

若采用抓包器抓获某一报文的以太帧如下图所示，该报文是（39)。

在Windows系统中，默认权限最低的用户组是（40)。

IIS6.0支持的身份验证安全机制有4种验证方法，其中安全级别最高的验证方法是 (41)。

以下关于钓鱼网站的说法中，错误的是（42)。

支持安全Web服务的协议是（43)。

甲和乙要进行通信，甲对发送的消息附加了数字签名，乙收到该消息后利用（44) 验证该消息的真实性。

下列算法中，（45)属于摘要算法。

网络的可用性是指（46)。

网络管理的5大功能域是（47)。

SNMPv2提供了3种访问管理信息的方法，这3种方法不包括（48)。

嗅探器改变了网络接口的工作模式，使得网络接口 （49)。

ICMP协议的功能包括（50),当网络通信出现拥塞时，路由器发出ICMP (51)报文。

ICMP协议的功能包括（50),当网络通信出现拥塞时，路由器发出ICMP (51)报文。

IP地址分为公网地址和私网地址，以下地址中属于私网地址的是（52)。

如果子网172.6.32.0/20被划分为子网172.6.32.0/26,则下面的结论中正确的是(53)。

地址192.168.37.192/25 是(54),地址 172.17.17.255/23 是(55)。

地址192.168.37.192/25 是(54),地址 172.17.17.255/23 是(55)。

某公司有2000台主机，则必须给它分配（56)个C类网络。为了使该公司的网络地址在路由表中只占一行，给它指定的子网掩码必须是（57)。

某公司有2000台主机，则必须给它分配（56)个C类网络。为了使该公司的网络地址在路由表中只占一行，给它指定的子网掩码必须是（57)。

以下给出的地址中，属于子网172.112.15.19/28的主机地址是（58)。

IPv6地址分为3种类型，它们是（59) 。

FTP默认的控制连接端口是（60)。

路由器命令 《Router(config)# access-list 1 deny 192.168.1.1 》 的含义是（61)。

局域网冲突时槽的计算方法如下。假设tPHY表示工作站的物理层时延，C表示光速，S表示网段长度，t_R表示中继器的时延，在局域网最大配置的情况下，冲突时槽等于 (62)。

在局域网标准中，100BASE-T规定从收发器到集线器的距离不超过（63)米。

IEEE 802.11 在 MAC 层采用了（64)协议。

在无线局域网中，AP的作用是（65)。新标准IEEE 802.11n提供的最高数据速率可达到（66)。

在无线局域网中，AP的作用是（65)。新标准IEEE 802.11n提供的最高数据速率可达到（66)。

IEEE 802.16工作组提出的无线接入系统空中接口标准是（67)。

安全电子邮件使用（68)协议。

建筑物综合布线系统中的园区子系统是指（69)。

下面有关RMON的论述中，错误的是（70)。

The TCP protocol is a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a (72) with a length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransmission time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a (73) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segment that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs.
Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive (74) faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made (75) by basing it on the round-trip time (RTT). Several formulas are used for this purpose.

The TCP protocol is a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a (72) with a length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransmission time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a (73) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segment that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs.
Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive (74) faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made (75) by basing it on the round-trip time (RTT). Several formulas are used for this purpose.

The TCP protocol is a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a (72) with a length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransmission time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a (73) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segment that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs.
Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive (74) faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made (75) by basing it on the round-trip time (RTT). Several formulas are used for this purpose.

The TCP protocol is a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a (72) with a length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransmission time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a (73) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segment that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs.
Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive (74) faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made (75) by basing it on the round-trip time (RTT). Several formulas are used for this purpose.

The TCP protocol is a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a (72) with a length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransmission time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a (73) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segment that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs.
Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive (74) faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made (75) by basing it on the round-trip time (RTT). Several formulas are used for this purpose.