Explanation:
E-Pollution is the environmental damage that comes from the constant heat and cooling down in facilities that are referred to data centers. Data centers are where online information is collected, processed, stored and exchanged.
The answer is firewall. It is a network security device that observes inbound and outbound network traffic and chooses whether to allow or block specific traffic based on a well-defined set of security rules. Firewalls have been a first line of protection in network security for over 25 years. The firewall present a barrier between measured and secured internal networks that can be trusted and untrusted outside networks, for example the Internet. A firewall can be software, hardware, or even both.
Answer:
dependent variable -- As it depends on the other variables, changes when they change
