你可能感兴趣的试题

http://www.tsinghua.edu.cn/index.html 中的http表示（）。

内联网(Intranet)是利用因特网技术构建的企业内部网，其中必须包括（）协议、Web Server/Browser等。

无线局域网新标准 IEEE802．11n 提供的最高数据速率可达到（）。

如下图所示，在IE的“Internet选项”对话框的（）选项卡中可指定电子邮件程序。

下图为Web站点的文档属性窗口，若主目录下只有Default.jsp、index.htm和iisstart.htm三个文件，则客户端访问网站时浏览的文件是（）。

在Windows系统中，若要查找文件名中第二个字母为b的所有文件，则可在查找对话框中输入（）;若用鼠标左键双击应用程序窗口左上角的图标，则可以（）该应用程序窗口。

在Excel中，设A1单元格的值为23，A2单元格的值为36，若在A3单元格中输入Al—A2，则A3单元格中的内容为（）；若在A3单元格输入公式“=TEXT(A2，”￥0．00”)”，则A3单元格的值为（）。

在Windows系统中，若要查找文件名中第二个字母为b的所有文件，则可在查找对话框中输入（）;若用鼠标左键双击应用程序窗口左上角的图标，则可以（）该应用程序窗口。

在Excel中，设A1单元格的值为23，A2单元格的值为36，若在A3单元格中输入Al—A2，则A3单元格中的内容为（）；若在A3单元格输入公式“=TEXT(A2，”￥0．00”)”，则A3单元格的值为（）。

在8位、16位、32位和64位字长的计算机中，（）位字长计算机的数据运算精度最高；计算机的运算速度通常是指每秒钟所能执行（）指令的数目，常用MIPS来表示。

若用8位机器码表示十进制整数-127，则其原码表示为（），补码表示为（）。

若用8位机器码表示十进制整数-127，则其原码表示为（），补码表示为（）。

 在异步通信中，每个字符包含1位起始位、7位数据、1位奇偶位和1位终止位，位每秒钟传送200个字符，采用4相位调制，则码元速率为为 （）。有效数据速率为（）。

在OSI/RM中，主要提供差错控制的协议层是（），负责路由选择的协议层是（），解释应用数据语义的协议层是（）。

在异步通信中，每个字符包含1位起始位、7位数据、1位奇偶位和1位终止位，位每秒钟传送200个字符，采用4相位调制，则码元速率为为 （）。有效数据速率为（）。

如果一个公司有1000台主机，则至少需要给它分配（）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（）。这种技术叫做（）技术。

ARP协议属于（）层，其作用是（）。

X．25公用数据网采用的交换技术是（），ATM通信网采用的交换技术是（）。

在OSI/RM中，主要提供差错控制的协议层是（），负责路由选择的协议层是（），解释应用数据语义的协议层是（）。

如果一个公司有1000台主机，则至少需要给它分配（）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（）。这种技术叫做（）技术。

 在OSI/RM中，主要提供差错控制的协议层是（），负责路由选择的协议层是（），解释应用数据语义的协议层是（）。

通过（）服务可以登录远程主机进行系统管理，该服务默认使用（）端口。
 

以太网控制策略中有三种监听算法，其中一种是：“一旦介质空闲就发送数据，假如介质忙，继续监听，直到介质空闲后立即发送数据”，这种算法称为（）监听算法。这种算法的主要特点是（）。

POP3使用端口（）接收邮件报文，该报文采用（）协议进行封装。

 在交换机连接的局域网中设置VLAN，可以（）。使用VLAN有许多好处，其中不包括（）。

通过（）服务可以登录远程主机进行系统管理，该服务默认使用（）端口。

在交换机连接的局域网中设置VLAN，可以（）。使用VLAN有许多好处，其中不包括（）。

在IIS6．0中，为保证网站的安全性，发布目录中html文件的权限应该设置为（），可执行程序的权限应该设置为（）。

POP3使用端口（）接收邮件报文，该报文采用（）协议进行封装。
 

以太网控制策略中有三种监听算法，其中一种是：“一旦介质空闲就发送数据，假如介质忙，继续监听，直到介质空闲后立即发送数据”，这种算法称为（）监听算法。这种算法的主要特点是（）。

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

The first （） in a block (in classes A，B，and C) defines the network address.

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

It is used by a.（） to send a packet to all hosts in a specific network.

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.

We have already covered the topic of network addresses. The first （） in a block (in classes A，B，and C) defines the network address. In classes A，B，and C，if the hostid is all ls， the address is called a direct broadcast address. It is used by a.（） to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this address can be used only as a （） address in an IP packet. Note also that this special address also reduces the number of available hostid for each netid in classes A，B，and C.
In classes A，B，and C，an address with all is for the netid and hostid (32 bits) defines a（） address in the current network.A host that wants to send a message to every other host can use this address as a destination address in an IP packet. However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.

However，a router will block a packet having this type ofaddress to confine the broadcasting to the （） network. Note that this address belongs to class E.