Question

How many trust models does the RFC 4251 dictate?

(a) 2

(b) 3

(c) 4

(d) 5

The question was asked during an internship interview.

This is a very interesting question from Secure Shell(SSH) topic in section Internet Protocol, Network Addressing and Transport Level Security of Cryptograph & Network Security

Answer 1

Right option is (a) 2

To explain: The RFC 4251 dictates two alternative trust models : The local database model and the certification authority model.