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.
Take a close look at the friendship, and if the loyalty and love is there, that's what matters. Nobody is perfect; nobody can give you everything. Different friends fulfill different needs. Embrace each of your best friendships for what they give you. Cherish the good and don't focus on where they lack. Appreciate the unique relationship you share and its positive force in your life. Here are the 12 different types of best friends you'll have in life (some may overlap):