Number 2 is the correct answer
My opinion is the answers A and D. I would choose A if you can only choose one, though.
The biggest security issue with using social networking sites to market your listings is Criminals may use social networking sites to identify your personal data.
<h3>What is a social marketing site?</h3>
A social marketing site is a site where people from around the world are connected in one place and share their thoughts and photos and other data.
The social sites are on the internet and there is a chance of stealing data and it identity theft, phishing, online predators, internet fraud, and other cybercriminal attacks are also some risks.
Thus, the largest security concern with using social networking sites to sell your listings is that thieves could use these sites to find personal information about you.
To learn more about social marketing sites, refer to the link:
brainly.com/question/15051868
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Answer:
The blocking system.
Explanation:
In order to avoid servers to replicate with each other, I should configure the blocking system of the first DHCP.
For example, if the first DHCP fails to respond, the second will get in place, however, I have to configure the first system that immediately that the second DHCP starts working, the first blocks its information and use.
By this way, there won´t be any duplicated actions or reponses.