With which technology do apply integrity, confidentially and authenticate the source

A.
IPSec

B.
IKE

C.
Certificate authority

D.
Data encryption standards

Explanation:
BD
IPsec is a collection of protocols and algorithms used to protect IP packets at Layer 3 (hence the name of IP
Security [IPsec]). IPsec provides the core benefits of confidentiality through encryption, data integrity through
hashing and HMAC, and authentication using digital signatures or using a pre-shared key (PSK) that is just for
the authentication, similar to a password.
Source: Cisco Official Certification Guide, IPsec and SSL, p.97