Compared with SoBig. F, Blaster was a virus that was ______.A.more destructiveB.more humor
Compared with SoBig. F, Blaster was a virus that was ______.
A.more destructive
B.more humorous
C.less vulnerable
D.less noticeable
Compared with SoBig. F, Blaster was a virus that was ______.
A.more destructive
B.more humorous
C.less vulnerable
D.less noticeable
Kevin Haley of Symantec, a firm that makes anti-virus software, thinks that one reason SoBig. F was so much more effective than other viruses that work this way is because it was better at searching hard drives for addresses. Brian King, of CERT, an internet-security centre at Carnegie-Mellon University in Pittsburgh, notes that, unlike its precursors, SoBig. F was capable of "multi-threading", it could send multiple e-mails simultaneously, allowing it to dispatch thousands in minutes.
Blaster worked by creating a "buffer overrun in the remote procedure call". In English, that means it attacked a piece of software used by Microsoft's Windows operating system to allow one computer to control another. It did so by causing that software to use too much memory.
Most worms work by exploiting weaknesses in an operating system, but whoever wrote Blaster had a particularly refined sense of humour, since the website under attack was the one from which users could obtain a program to fix the very weakness in Windows that the worm itself was exploiting.
One Way to deal with a wicked worm like Blaster is to design a fairy godmother worm that goes around repairing vulnerable machines automatically. In the case of Blaster someone seems to have tried exactly that with a program called Welchi. However, according to Mr. Haley, Welchi has caused almost as many problems as Blaster itself, by overwhelming networks with "pings" signals that checked for the presence of other computers.
Though both of these programs fell short of the apparent objectives of their authors, they still caused damage. For instance, they forced the shutdown of a number of computer networks, including the one used by the New York Times newsroom, and the one organising trains operated by CSX, a freight company on America's east coast. Computer scientists expect that it is only a matter of time before a truly devastating virus is unleashed.
SoBig. F damaged computer programs mainly by ______.
A.sending them an overpowering number of messages
B.harvesting the addresses stored in the computers
C.infecting the computers with an invisible virus
D.destroying the anti-virus software of the computers
A.It compares to
B.It compared to
C.Compared with
D.Comparing to
The current death rate is reduced _______ 10% compared with that of the year of 1980.
A、to
B、form
C、by
According to the passage, southeastern Native Americans compared This World to ______.
A.waters
B.the sky
C.an animal
D.an island
The shape of Italy on a map has often been compared ______ a long Wellington boot.
A.as
B.to
C.with
D.against
Compared with Jennifer Granholm, Mr. Schwarzenegger is at disadvantage due to______.
A.more embarrassing secrets
B.previous actor background
C.excessive garment decoration
D.less slender figure
A.Comparing
B.Compared
C.To compare
D.Being compared