2. 计算机
  3. (66) program　propagates　itself　by　modifying　other　programs　to　include　a　possibly　changed　copy　of　itself　and　that　is　executed　whe

(66) program　propagates　itself　by　modifying　other　programs　to　include　a　possibly　changed　copy　of　itself　and　that　is　executed　whe

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问题 (66) program　propagates　itself　by　modifying　other　programs　to　include　a　possibly　changed　copy　of　itself　and　that　is　executed　when　the　infected　program　is(67).　A　virus　often　causes　damage　or　annoyance　and　may　be　triggered　by　some　event　such　as　the　occurrence　of　a　predetermined　date.Worm　is　a　self-contained　program　that　can　propagate　itself　through　data　processing　systems　or　computer　networks.　Worms　are　often　designed　by　hackers　to　use　up(68) resources　such　as　storage　space　or　processing　time.Trojan　horse　implies　by　the　name　an　apparently　harmless　program　containing(69) logic　that　allows　the　unauthorized　collection,　falsification　or　destruction　of　data.　Logic　bomb　causes　damage　to　a　data　processing　system　when　triggered　by　some　specific　system　condition.　Time　bomb　is　also　a　malicious　program　being　activated　at　a(70) time.
选项 A、malicious
B、greedy
C、destructive
D、chaos
答案A
解析
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