Give at least three examples of how you can use Cisco ACLs in order to better se

Give at least three examples of how you can use Cisco ACLs in order to better secure networks.
Choose one of the Layer 2 attacks and describe how you might be able to use ACLs to protect against this sort of attack.
What components are necessary to fully implement an ACL in one of the examples that you provided?
What are the security issues related to the scenario you provided?
Please be sure to validate your opinions and ideas with citations and references in APA format.