Personal firewall is a technology that helps __(66)__ intruders from accessing data on your PC via the Internet or another network, by keeping __(67)__ data from entering or exiting your system.

H．ackers do not just target national security organizations for __(68)__: They want your tax returns, network passwords, or bank account numbers. And you do not want the FBI kicking in your door because someone hijacked your PC to __(69)__ in the latest denial-of-service attack on the Internet. Now that “always-on” broadband connections such as cable modems and digital subscriber line are becoming more popular, home users are at risk. Fortunately, you can protect your data.

F．irewalls can block __(70)__ attacks and protect your PC from outside threats.(66)

A． allow

B． prevent

C． invite

D． get(67)

A． authorized

B． refused

C． denied

D． unauthorized(68)

A． attacks

B． aggression

C． help

D． repair(69)

A． enlist

B． go to

C． participate

D． attach(70)

A． malicious

B． friendly

C． neighborly

D． goodwill

[单选题]Personal firewall is a technology that helps(66)intruders from accessing data on your PC via the Internet or another network, by keeping(67)data from entering or exiting your system.H．ackers do not just target national security organizations for(68):

[单选题]A． ______ computer is a personal computer whose hardware is capable of using any or all of the following media in a program, text, graphics, video and animation.A．databaseB．multimediaC．networkD．mainframes

[名词解释] 技术（Technology）

[单选题]A firewall is a (71) system designed to (72) an organization′s network against threats.(71) A．operatingB．programmingC．securityD．data(72) A．preventB．protectC．examineD．exploit

[单选题]There is free firewall software available that can run on minimal hardware and provide a good level of (74) to your network.(74) A．protectiveB．profectingC．protectionD．profection

[单选题]A firewall is a (68) system designed to (69) all organization,s network aga-inst threats.(68) A．operatingB．programmingC．securityD．service(69) A．preventB．protectC．developD．exploit

[单选题]There is free firewall software available that can run on minimal hardware and provide a good level of(71)to your network.A．protectiveB．profectingC．protectionD．profection

[单选题]The firewall device is a( )system for connecting a computer network to other computer network．A．hardwareB．softwareC．securityD．I／O

[单选题] Firewall is a ___(74)___ mechanism used by organizations to protect their LANs fromInternet.(74)A. reliable B. stable C. peaceful D. security

[单选题]The firewall device is a（75）system for connecting a computer network to other computer network.（75）A．hardwareB．softwareC．securityD．I/O