单项选择题

SATAN, a program designed by Dan Farmer, can be used______.

A．to investigate the security of Internet sites
B．to improve the security of the Internet system
C．to prevent hackers from breaking into websites
D．to download useful programs and information

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热门试题

单项选择题

By saying ...owners of well over half of all World Wide Web sites have set up home with out fitting locks to their doors (Line 3-4, Para.2), the author means that______.

A．those happy times appear still to be with us
B．there simply wasn't any crime to worry about
C．many sites are not well-protected
D．hackers try out tricks on an Internet site without actually breaking in

单项选择题

Farmer's program has been criticized by the public because______.

A．it causes damage to Net browsers
B．it can break into Internet sites
C．it can be used to cause disorder on all sites
D．it can be used by people with evil intent