A _____ is a harmful program that resides in the active memory of a computer and duplicates itself.
a. scareware
b. worm
c. virus
d. logic bomb
b. worm
Unlike a computer virus, which requires users to spread infected files to other users, a worm is a harmful program that resides in the active memory of the computer and duplicates itself. A worm can propagate without human intervention, often sending copies of themselves to other computers by email.
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For any nonzero 8-bit x, which of the following does not result in zero?
a. x &= (~x) b. x ^= x c. x <<= 8 d. x |= x
Critical Thinking QuestionsCase 1-1As you prepare to bring one of the interns in your software development company up to speed on the project on which you are working, you decide to create some illustrations of your programming to make certain key concepts clear to the intern.All of the following are examples of actions within event-driven programs EXCEPT ____. a. An account balance is shown when a button is clicked.c. The computer reboots spontaneously as the result of a head crash.b. A message appears on the screen in response to text entered by the user.d. A text box is reset when a Reset button is clicked.
What will be an ideal response?
When data within a zone changes, what information in the SOA record changes to reflect that the zone information should be replicated?
A. Serial number B. Refresh interval C. Retry interval D. Minimum TTL
The __________ moves data between the computer and its external environment.
A. data transport B. I/O C. register D. CPU interconnection