Answering the question: "How do networks use cryptography to achieve security?" This video includes public key cryptography (PKI) as well as symmetric key cryptography.
Based on Computer Networking: A Top-Down Approach 8th edition, Chapter 8, Section 2.
Slides are copyright 1996-2020 J.F. Kurose, K.W. Ross All Rights Reserved., and freely available here: https://gaia.cs.umass.edu/kurose_ross...
Background music: https://www.epidemicsound.com/referra...