| Exam 300-075 | Question id=2828 | Collaboration Edge | 
        Which statement about enrollment in the IP telephony PKI is true?
      
| A. | CAPF enrollment supports the use of authentication strings. | |
| B. | The CAPF itself has to enroll with the Cisco CTL client. | |
| C. | LSCs are issued by the Cisco CTL client or by the CAPF. | |
| D. | MICs are issued by the CAPF itself or by an external CA. | 
The CAPF enrollment process is as follows:
          1. The IP phone generates its public and private key pairs.
          2. The IP phone downloads the certificate of the CAPF and uses it to establish a TLS session with the CAPF.
          3. The IP phone enrolls with the CAPF, sending its identity, its public key, and an optional authentication string.
          4. The CAPF issues a certificate for the IP phone signed with its private key.
          5. The CAPF sends the signed certificate to the IP phone.