Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an(71)from a friend who asks you to open it. This is what happens with Melissa and several other similar email(72). Upon running, such worms usually proceed to send themselves out to email addresses from the victim's address book, previous emails, web pages(73)As administrators seek to block dangerous email attachments through the recognition of well-known(74), virus writers use other extensions to circumvent such protection. Executable(.exe)files are renamed to .bat and .cmd plus a whole list of other extensions and will still nm and successfully infect target users.Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the(75)access to your network.

A．attachment

B．packet

C．datagram

D．message

[单选题]Melissa and Love Letter made use of the trust that exists between friends or colleagues. Imagine receiving an(66)from a friend who asks you to open it. This is what happens with Melissa and several other similar email(67).Upon running, such worms usu

[单选题]Melissa and Love Letter made use of the trust that exists between friends or colleagues.Imagine receiving an (66) from a friend who asks you to open it.This is what happens with Melissa and several other similar email (67) .Upon running, such worms u

[主观题]Thepresidentmadea_______speechattheopeningceremonyofthesportsmeeting,whichencouragedthesportsmengreatly.A．)vigorousB)tediousC．)flatD)harsh

[单选题]The cylinder liners are made of （） and the cylinder surfaces are sometimes chromium-plated.A . steelB . copperC . cast ironD . stainless steel

[单选题]The author has made a significant ____ to explain various issues regarding the web and its contents.A．reviewB．contactC．attemptD．comment

[主观题]what is the use of a purifier ?explain the purpose of a gravity disc ?

[单选题]Our president made a(n) ____ speech at the opening ceremony of the sports meeting which encouraged the sportsmen greatly.A． indifferent B inspiring C flat D dry

[单选题]Most Computer operating systems in use today, including all consumer-targeted systems, include a TCP/IP（）.A . planB . requirementC . implementationD . design

[单选题]H．elen: Making use of the heavy traffic to produce electricity.

[单选题]Smaller engines can be made more rigid than large ones and may not have （）.A . connecting rodsB . crankshaftC . crankcaseD . through bolt