问题 填空题

为了保障内部网络安全,某公司在Internet的连接处安装了PIX防火墙,其网络结构如图12-6所示。
完成下列命令行,对网络接口进行地址初始化配置:
Firewall(config)#ip address ins.ide ______ ______
Firewall(config)#ip address outside ______ ______
阅读以下防火墙配置命令,为命令选择正确的解释。
Firewall(config)#global(outside)1 61.144.51.46 ______
Firewall(config)#nat(inside)1 0.0.0.0 0.0.0.0
Firewall(config)#static(inside,outside) 192.168.0.1 61.144.51.42

答案

参考答案:A

解析: ip address inside和ip address outside命令用来完成内网和外网的配置。根据图中的ip address inside192.168.0.1 255.255.255.0表示配置掩码为255.255.255.0的IP地址,192.168.0.1为内网地址。
ip address outside61.144.51.42.255.255.255.248表示配置掩码为255.255.255.248的IP地址,61.144.51.42为外网地址。
global指定公网地址范围、定义地址池,表示当内网的地址访问外网时,地址统一映射为ip_address-ip_address地址段的地址。
语法:global(if_name)nat_id ip_address-ip_address[netmakglobal_mask]
(if_name):表示外网接口名称,一般为outside。
nat_id:建立的地址池标识(nat要引用)
ip_address-ip_address:表示一段IP地址范围。
[netmakglobal_mask]:表示全局IP地址的网络掩码。

完形填空
完形填空。
      Children find meanings in their old family tales. 
      When Stephen Guyer's three children were growing up,he told them stories about how his
grandfather,a banker,__1__all in the 1930s,but did not lose sight of what he valued most.In
one of the darkest times__2__hisstrong minded grandfather was nearly__3__,he loaded his
family into the car and__4__them to see family members in Canada with a__5__,"There are
more important things in life than money."
     The__6__took on a new meaning recently when Mr.Guyer downsized to a__7__house
from a more expensive and comfortable one.He was__8__that his children,a daughter,15,
and twins,22,would be upset.To his surprise,they weren't.__9__,their reaction echoed(共鸣)
their great grandfather's.What they__10__was how warm the people were in the house and
how__11__of their heart was accessible.
     Many parents are finding family stories have surprising power to help children__12__hard
times.Storytelling experts say the phenomenon reflects a growing__13__in telling tales,evidenced
by a rise in a storytelling events and festivals.
     A university__14__of 65 families with children aged from 14 to 16 found kids' ability to
__15__parents' stories was linked to a lower rate of anger and anxiety.
     The__16__is telling the stories in a way children can__17__.We're not talking here about
the kind of story that__18__,"When I was a kid,I walked to school every day uphill both ways,
barefoot in the snow." Instead,we should choose a story suited to the child's__19__,and make
eye contact(接触)to create "a personal experience".We don't have to tell children__20__they
should take from the story and what the moralis.
( )1.A.missed
( )2.A.when
( )3.A.friendless
( )4.Afetched
( )5.A.hope
( )6.A.tale
( )7.A.large
( )8.A.surprised
( )9.A.Therefore
( )10.A.talkedabout
( )11.A.much
( )12.A.beyond
( )13.A.argument
( )14.A.study
( )15.A.provide
( )16.A.trouble
( )17.A.perform
( )18.A.means
( )19.A.needs
( )20.A.that
B.lost
B.while
B.wortess
B.allowed
B.promise
B.agreement
B.small
B.annoyed
B.Besides
B.caredabout
B.many
B.over
B.skill
B.design
B.retell
B.gift
B.write
B.ends
B.activities
B.what
C.forgot
C.how
C.penniless
C.expected
C.suggestion
C.arrangement
C.new
C.disappointed
C.Instead
C.wroteabout
C.little
C.behind
C.interest
C.committee
C.support
C.fact
C.hear
C.begins
C.judgements
C.which 

D.ignored
D.why
D.homeless
D.took
D.belief
D.report
D.grand
D.worried
D.Otherwise
D.heardabout
D.few
D.through
D.anxiety
D.staff
D.refuse
D.trick
D.question
D.proves
D.habits
D.whom

单项选择题 A1/A2型题