MAC address
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Answer:
E. Traditional leaders in communication have lost some control over information
Explanation:
Due to the quick development of new technologies like Internet, cable etc, traditional leaders in communication have lost some of their control over information. This means that the technological advancement is disruptive for traditional leaders. Following examples are given to elaborate the consequences of advancement in new technology in digital era.
With the establishment of new channels like CNN, Fox News and internet bloggers, the old television network news shows like ABC, NBC lost their audiences.
Email technology has taken on some of the postal service's responsibilities and outperforms attempts to control communication outside national borders. This replaced the postal mail which used to take months to reach the destination.
The Internet and social media websites are transforming the way in which we access and interact with media culture. Before internet most people would watch popular TV shows in at the time they originally aired it. This scheduling gave common media interactions at specific times within our society. We still watch these TV shows but now we watch them at our own ease through websites. Using You tube we can upload our own media instead of viewing mainstream television.
<u><em>
Viruses,A tiny program that hacks a computer </em></u>
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Steals information and personal data.It can disable your laptop.Viruses can be found in malicious sites.Criminals share these viruses to steal data from others.With a firewall,Hackers will be detected.</em></u>
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</em></u>
<u><em>The general consensus is that there are no good viruses.</em></u>
1. First normal form:
The first step in normalisation is putting all repeated fields in separate files and assigning appropriate keys to them.
2. Second normal form:
In this stage of normalisation, all non-key elements that are fully specified by something other than the complete key are placed in a separate table. Normally, these non-key elements are dependent on only a part of a compound key.
3. Third normal form:
This stage of normalisation enables eliminating redundant data elements and tables that are subsets of other tables. The redundant elements are those non-key data elements that are placed in more than one table of the virtual data elements.