thought i knew these but apparently not help pls

Incorrect Question 5 0/2 pts Which of the following is a Correct statement or restatement of the Fundamental Principle of Trust: (Be careful of subtle differences) One way to establish trust over an untrusted communication medium is to exchange the secret key through an external trusted mechanism Trust can be derived from an existing trust The not possible to establish trust over auntrusted communication medium is to exchange the secret key through an external trusted nechanism One way is to derived trust from an besting trust. Incorrect Question 6 0/1 pts In a Web of Trust with delegation with N existing members, how many people will a new member have to establish trust with before she is trusted by the entire group? NIN-1)/2 N 1 NON-1)