Which layer of the OSI reference model does IPsec work at?(a) Layer 1(b) Layer 2(c) Layer 3(d) Layer 4I got this question during an interview for a job.My doubt stems from Virtual Private Networks in portion Application Layer of Computer Network

Which layer of the OSI reference model does IPsec work at?(a) Layer 1(

1.	Which layer of the OSI reference model does IPsec work at?(a) Layer 1(b) Layer 2(c) Layer 3(d) Layer 4I got this question during an interview for a job.My doubt stems from Virtual Private Networks in portion Application Layer of Computer Network
Answer» The correct answer is (c) Layer 3 Best EXPLANATION: IPSec is a set of PROTOCOLS used to provide authentication, DATA INTEGRITY and confidentiality between two machines in an IP NETWORK. It operates in the network layer.

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