What is the certificate format PKCS #7, or .p7b, used for?

What is the certificate format PKCS #7, or .p7b, used for?
A . Certificate Signing Request
B . Binary encoded
C . 509 certificate
D . Binary encoded
E . 509 certificate with public key
F . Certificate with an encrypted private key
G . Certificate chain

View Answer

Answer: E

Explanation:

The PKCS#7 or P7B format is usually stored in Base64 ASCII format and has a file extension of .p7b or .p7c. P7B certificates contain "—–BEGIN PKCS7—–" and "—–END PKCS7—–" statements. A P7B file only contains certificates and chain certificates, not the private key. Several platforms support P7B files including Microsoft Windows and Java Tomcat.

References: https://community.arubanetworks.com/t5/Controller-Based-WLANs/Various-Certificate­Formats/ta-p/176548