Question: 1. Which layer of the OSI model does switches function? 2. Describe the network security advantage of using a VLAN. 3. A router, similar to
1. Which layer of the OSI model does switches function?
2. Describe the network security advantage of using a VLAN.
3. A router, similar to a VLAN, can subdivide a large network into smaller sections. However, a VLAN offers more advantages. Describe the advantages of use VLANS as compared IP sub-netted networks?
4.
Linux will store DNS network forensic evidence in /var/log/messages file. Since Linux stores a lot of evidence, the grep commands is used to filter the message log and will search for www.reddit.com
The following is a sample of one DNS forward lookup.

5. Why is baselining DNS evidence important?
6. Why does the domain name facebook.com have multiple DNS A records or host IP records?
7. Using DNS network forensics how can you determine is an employee is inappropriately viewing Netlex on a company's computer during work hours?
# grep reddit.com /var/log/messages 1456702040.91998411192.168.75.6 1192.168.75.1 INIlwww.reddit.com.IIAI 1 198.41.208.136112971111
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