What is the difference between RA(Registration Authority) and CA(Certifying Authority)? RA interacts with the subscribers for providing CA services. The RA is subsumed in the CA, which takes total responsibility for all actions of the RA.
1 When you fall on hard times, a good friend is loyal to you. As the saying goes You know who your true friends are in hard times.  A good friend is sensitive to your needs and can be sensitive when the situation requires it.
Friendship for most people is a combination of affection, loyalty, love, respect, and trust. The general traits of a friendship include similar interests, mutual respect and an attachment to each other, and in order to experience friendship, you need to have true friends.