Use examples from the readings, or from your own research, to support your views, as appropriate. You are encouraged to conduct research and use other sources to support your answers. Be sure to list your references at the end of your post. References must be in APA citation format.

All posts must be a minimum of 250-300 words. 
1. Explain the process used to preserve the verifiable integrity of digital evidence. How does this ensure that data is preserved unmodified? How can an analyst show that the original evidence is modified?
2. What is a firewall? Identify and explain some of the functions of a firewall. What are its limitations?