It's an internet protocol (Lightweight Directory Access Protocol) used to fetch data from servers.
Answer:
Calvert Richard Jones
Explanation:
Just five years later, in 1846, the first known act of photographic retouching was performed by a Welsh colleague of Talbot's named Calvert Richard Jones, or perhaps by one of Jones's associates
Answer:
b. Certificate Authority
Explanation:
Based on the information provided within the question it can be said that they are communicating with each other by using a certificate authority. This term refers to a company or organization that provides security verification by issuing both parties cryptographic keys which are specifically verified by the company in order to allow both parties to know exactly who they are communicating with.