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【说明】 图5-1是某公司利用Internet建立的VPN 【问题1】(4分) 使用VPN技术，是为了保证内部数据通过Internet安全传输，VPN技术主要采用哪些技术来保证数据安全 【问题2】(3分) 分部1采用DDN通过一台路由器接入Internet。 阅读下面的路由配置信息，将(1)～(3)处标识的语句进行解释。 Router>en (进入特权模式) Router config terminal (进入全局配置模式) Router(config)enable secret cisco (设置特权口令) Router(config)line vty 04 Router(config-line)password goodbad ___(1)___ Router(config-line)exit Router(config) interface eth 0/0 (进入以太网接口配置模式) Router(config-if) ip address 202.117.1.1 255.255.255.0 (设置IP地址和掩码) Router(config-if)no shutdown (启用以太网接口) Router(config-if)exit Router(confi9)interface serialO/O (进入串口配置模式) RouteI Router(config-if) bandwidth 256 (指定带宽为256k) Router(config-if) encapsulation PPP ___(2)___ Router(config-if) no cdpenable ___(3)___ Router(config-if) no shutdown (启用serial接口) Router(config-if) exit Router(config) 【问题3】(4分) 分部1的路由器配置为ethernet0/0端口接内部网络，serialO/O端口接外部网络。下列配置指定内外网端口，完成下列配置，将答案填写在答题纸相应的位置。 Router(config-if) inter ethO/O Router(config-if) ___(4)___ Router(config-if) inter serial0/0 Router(config-if) ___(5)___ Router(config-if) exit Router(config-if) 【问题4】(4分) 以下是指定VPN在建立连接时协商IKE使用的策略，阅读下面的配置信息，解释(6)、(7)处的命令，将答案填写在答题纸相应的位置。 Router(config-if) crypto isakmp policy 10 (定义策略为10) Router(config-isakmp) hash md5___(6)___ Router(config-imp) authentication pre-share___(7)___ Router(config-isakmp) exit Router(config)crypto isakmp keycisc0 123 address 0.0.0.00.0.0.0 (配置预共享密钥为cisco123，对等端为所有IP)
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参考答案：
举一反三
【单选题】项目寿命期结束时,固定资产的残余价值对于投资者来说是一项在期末( )回收的现金流入。
A.
不可
B.
可
C.
不确定
D.
以上都可能出现
查看完整题目与答案
【多选题】What problems does Kevin have?
A.
boring work
B.
no time to rest between two calls
C.
health problems
D.
rude customers
E.
no promotion
F.
high turnover
查看完整题目与答案
【单选题】听力原文： When a consumer finds that an item she or he bought is faulty or in some other way does not meet the standard of the manufacturer's claim for it, the first step is to present the warranty, or an...
A.
Complain personally to the manager.
B.
Threaten to take the matter to court.
C.
Write a firm letter of complaint to the store of purchase.
D.
Show some written proof of the purchase to the store.
查看完整题目与答案
【简答题】Go for It! While watching the Olympics the other night, I came across quite a sight. It was not a world record broken, but a show of determination. The was swimming and started with only three m...
查看完整题目与答案
【判断题】项目寿命期结束时固定资产的残余价值称为期末残值,属于现金流出。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】50kg/m钢轨9号普通单开道岔全长为（）。
A.
28848mm
B.
29569mm
C.
36815mm
D.
37907mm
查看完整题目与答案
【单选题】A very few courses are restricted to people already working in a profession or in other way; ______ this is the case, it is mentioned in the university handbook.
A.
for
B.
where
C.
since
D.
because
查看完整题目与答案
【单选题】What Kevin on weekends? [     ]
A.
is, doing
B.
does, do
C.
did, do
D.
is, do
查看完整题目与答案
【单选题】关于药品销售人员的定位说法不正确的是
A.
医药信息的传递者
B.
药品使用的专业指导者
C.
医药企业的形象大使
D.
可以以赚取利益为目的
查看完整题目与答案
【简答题】A great difference between American social customs and those of other countries is the way in which names are used. Americans have little concern for “rank”, especially socially. Most Americans do not...
查看完整题目与答案
相关题目：
【单选题】项目寿命期结束时,固定资产的残余价值对于投资者来说是一项在期末( )回收的现金流入。
A.
不可
B.
可
C.
不确定
D.
以上都可能出现
查看完整题目与答案
【多选题】What problems does Kevin have?
A.
boring work
B.
no time to rest between two calls
C.
health problems
D.
rude customers
E.
no promotion
F.
high turnover
查看完整题目与答案
【单选题】听力原文： When a consumer finds that an item she or he bought is faulty or in some other way does not meet the standard of the manufacturer's claim for it, the first step is to present the warranty, or an...
A.
Complain personally to the manager.
B.
Threaten to take the matter to court.
C.
Write a firm letter of complaint to the store of purchase.
D.
Show some written proof of the purchase to the store.
查看完整题目与答案
【简答题】Go for It! While watching the Olympics the other night, I came across quite a sight. It was not a world record broken, but a show of determination. The was swimming and started with only three m...
查看完整题目与答案
【判断题】项目寿命期结束时固定资产的残余价值称为期末残值,属于现金流出。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】50kg/m钢轨9号普通单开道岔全长为（）。
A.
28848mm
B.
29569mm
C.
36815mm
D.
37907mm
查看完整题目与答案
【单选题】A very few courses are restricted to people already working in a profession or in other way; ______ this is the case, it is mentioned in the university handbook.
A.
for
B.
where
C.
since
D.
because
查看完整题目与答案
【单选题】What Kevin on weekends? [     ]
A.
is, doing
B.
does, do
C.
did, do
D.
is, do
查看完整题目与答案
【单选题】关于药品销售人员的定位说法不正确的是
A.
医药信息的传递者
B.
药品使用的专业指导者
C.
医药企业的形象大使
D.
可以以赚取利益为目的
查看完整题目与答案
【简答题】A great difference between American social customs and those of other countries is the way in which names are used. Americans have little concern for “rank”, especially socially. Most Americans do not...
查看完整题目与答案
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