 To contrast this with X.500, the certificate is one attribute of many for an entry, in which the entry could contain anything allowable by the specific Directory schema.Thus X.500 does store the digital certificate, but it is one of many attributes that could potentially verify the organization, such as physical address, a contact telephone number and an email contact.CA Certs or certificate authority certs are loaded into the browser automatically (in the case of Microsoft's update mechanism), or in new version updates of browsers, and the user is given further choices to import, delete, or develop an individual trust relationship with the loaded Certificate Authorities and determine how the browser will behave if OCSP revocation servers are unreachable.