Valid CISSP Dumps shared by EduDump.com for Helping Passing CISSP Exam! EduDump.com now offer the newest CISSP exam dumps, the EduDump.com CISSP exam questions have been updated and answers have been corrected get the newest EduDump.com CISSP dumps with Test Engine here:
Explanation/Reference: Explanation: More and more organizations are setting up their own internal PKIs. When these independent PKIs need to interconnect to allow for secure communication to take place (either between departments or between different companies), there must be a way for the two root CAs to trust each other. The two CAs do not have a CA above them they can both trust, so they must carry out cross certification. A cross certification is the process undertaken by CAs to establish a trust relationship in which they rely upon each other's digital certificates and public keys as if they had issued them themselves. When this is set up, a CA for one company can validate digital certificates from the other company and vice versa. Incorrect Answers: B: Building an overall PKI hierarchy is not the primary purpose of cross certification. Cross certification is used to create a trust between different PKIs or PKI hierarchies. C: Cross certification does not set up a direct trust to a second root CA; it creates trusts between two PKIs (this includes all CA's in each hierarchy). D: Preventing the nullification of user certificates by CA certificate revocation is not the purpose of cross certification. Certificate revocation should nullify user certificates or at least render them untrusted. References: Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 835