Answer:
D
Explanation:
Server Virtualization can help with all these areas. There is less equipment needed, and as a result less maintenance costs and you're optimizing network resources all at once.
Answer:
periodical databases
Explanation:
Among the various databases you can now access in a library, the periodical databases contains the text and other information about articles published in magazines, journal and newspapers.
This database allows you for example to easily search for all articles written about a specific event or person, and it will return you the list of articles you can then read from a single spot, no matter where or when the article was written.
That would be what is known as Spyware, a common form of this is known as a "Trojan Horse". This type of malware is typically latched on and hidden within files, such as when downloading a pirated version of a song, game, art-work, etc...