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.

A:source B:destination C:local D:remote

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.

A:unicast B:multicast C:broadcast D:anycast

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.

A:neighbor B:next C:remote D:local

试题一  阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】   某公司拥有一个C类地址块212.253.115.0/24,网络拓扑结构如图1-1所示。 在PC1的DOS命令窗口中,运行arp -a命令显示PC1的ARP缓存,得到结果如图1-2所示。 采用抓包工具在PC1中捕获的、由PC1以太网接口发出的某数据包的部分信息如图1-3所示。 请填写图1-1中PC1的相应参数。 IP地址:(1); 子网掩码:(2); 默认网关:(3); 以太网接口的MAC地址:(4)。

(1)212.253.115.31 
(2)255.255.255.0 
(3)212.253.115.254 
(4)10-0e-3c-95-64-e5

试题一  阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】   某公司拥有一个C类地址块212.253.115.0/24,网络拓扑结构如图1-1所示。 在PC1的DOS命令窗口中,运行arp -a命令显示PC1的ARP缓存,得到结果如图1-2所示。 采用抓包工具在PC1中捕获的、由PC1以太网接口发出的某数据包的部分信息如图1-3所示。 请填写图1-1中路由器eth0网卡的相应参数。 IP地址:(5); MAC地址:(6)。

(5)212.253.115.254 
(6)0d-4f-35-23-5d-8a

试题一  阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】   某公司拥有一个C类地址块212.253.115.0/24,网络拓扑结构如图1-1所示。 在PC1的DOS命令窗口中,运行arp -a命令显示PC1的ARP缓存,得到结果如图1-2所示。 采用抓包工具在PC1中捕获的、由PC1以太网接口发出的某数据包的部分信息如图1-3所示。 在图1-2中若要删除某条ARP记录,可以采用(7)命令。 (7)备选答案: A.arp-s B.arp-d C.arp-c D.arp-a

试题一  阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】   某公司拥有一个C类地址块212.253.115.0/24,网络拓扑结构如图1-1所示。 在PC1的DOS命令窗口中,运行arp -a命令显示PC1的ARP缓存,得到结果如图1-2所示。 采用抓包工具在PC1中捕获的、由PC1以太网接口发出的某数据包的部分信息如图1-3所示。 图1-3表明,在默认情况下该数据包请求的服务为(8)

 web服务(或www服务、HTTP)

试题二    阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】    在Windows Server 2003系统中,经常采用系统自带组件进行邮件服务器的配置。某邮件服务器部分信息如表2-1所示。 要求采用域用户来代替独立的用户,通过组策略赋予或限制一定的用户使用某应用系统或数据资源的权限。图2-1是邮件服务器配置中POP3服务身份认证和邮件域名配置窗口;图2-2是POP3服务常规属性窗口。 客户端电子邮件服务器配置窗口如图2-3所示。 邮件服务器的配置有以下几个步骤,正确的安装顺序为:(1)。 A.设置邮件服务器端口、邮箱根目录、认证方式 B.邮件服务器中添加域、用户 C.在邮件客户端软件中配置用户邮箱 D.利用“配置您的服务器向导”安装相关组件

试题二    阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】    在Windows Server 2003系统中,经常采用系统自带组件进行邮件服务器的配置。某邮件服务器部分信息如表2-1所示。 要求采用域用户来代替独立的用户,通过组策略赋予或限制一定的用户使用某应用系统或数据资源的权限。图2-1是邮件服务器配置中POP3服务身份认证和邮件域名配置窗口;图2-2是POP3服务常规属性窗口。 客户端电子邮件服务器配置窗口如图2-3所示。 图2-1中“身份验证方法”下拉框中应选择(2)。 (2)备选答案: A.Active Directory集成的 B.Windows集成的 C.加密的密码文件 D.用户名及密码 “电子邮件域名”文本框内应填入(3)。

(2)A (3)software.com

试题二    阅读以下说明,回答问题1至问题4,将解答填入答题纸对应的解答栏内。 【说明】    在Windows Server 2003系统中,经常采用系统自带组件进行邮件服务器的配置。某邮件服务器部分信息如表2-1所示。 要求采用域用户来代替独立的用户,通过组策略赋予或限制一定的用户使用某应用系统或数据资源的权限。图2-1是邮件服务器配置中POP3服务身份认证和邮件域名配置窗口;图2-2是POP3服务常规属性窗口。 客户端电子邮件服务器配置窗口如图2-3所示。 图2-2中默认情况下“服务器端口”文本框中应填入(4),“根邮件目录”文本框中应填入(5)。

(4)110 (5)D:/mailbox

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