Which function does Simple Object Access Protocol (SOAP) provide when using Web services?

Which function does Simple Object Access Protocol (SOAP) provide when using Web services?
A . directory of registered Web services
B . communications protocol
C . security model
D . model for describing Web services

Answer: B

Explanation:

SOAP, originally defined as Simple Object Access Protocol, is a protocol specification for exchanging structured information in the implementation of web services in computer networks. It relies on XML Information Set for its message format, and usually relies on other application layer protocols, most notably Hypertext Transfer Protocol (HTTP) or Simple Mail Transfer Protocol (SMTP), for message negotiation and transmission.