Discussion
What is true for worms and viruses? (Choose the most appropriate option from below)
Answer: A
The keyed answer is Only worms propagate via the network.
A worm is a standalone program that copies itself from computer to computer across a network on its own, using security holes, with no host file and no user action. A virus has no such ability: it attaches to a host file or program and spreads only when that file is run or shared, for instance as an email attachment.
The other options are false. Worms do not need a host application. Viruses cannot replicate without human action such as opening an infected file. And worms spread without anyone executing infected files. The keyed option is the only one left, read as self-propagation across a network.
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