Which three statements are true about SOAP and the advantages it provides? (Choose three.)
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A. B. C. D. E. F.ACF.
SOAP (Simple Object Access Protocol) is a messaging protocol that enables applications to communicate over a network, regardless of the platform or programming language. Here are the correct statements about SOAP and its advantages:
A. It is platform and programming language independent: This statement is true. SOAP is based on XML and is designed to work with any programming language and platform. This flexibility is because the SOAP message is written in XML and can be parsed by any programming language that supports XML parsing.
B. It provides flexibility for message format flexibility allowing for loose coupling between client and server: This statement is true. SOAP allows for different message formats, including custom message headers, which can help improve the flexibility of the messages being transmitted between the client and server. This flexibility enables a more loosely coupled architecture, which is essential for modern web service architectures.
C. It leverages XML-based payloads to communicate between two client machines across any modern network: This statement is true. SOAP messages are based on XML, which is a widely supported standard for exchanging data between different systems. This XML-based payload makes it easy for SOAP messages to be sent over any modern network, including the internet.
D. It commonly serves as a cleaning agent to remove excess data from the transmission protocol: This statement is false. SOAP does not remove excess data from the transmission protocol. Instead, SOAP is designed to provide a standardized protocol for transmitting data between applications. This standardization ensures that the data transmitted between applications is consistent and reliable.
E. SOAP clients can easily hold stateful references to remote server-side SOAP objects: This statement is true. SOAP supports stateful sessions, which allows the client to hold a reference to a remote server-side SOAP object. This feature is particularly useful for complex applications where a series of related requests need to be made in a specific order.
F. As compared to RPC (remote procedure calls), which are sometimes blocked by firewall and proxy servers, SOAP over HTTP can overcome that limitation: This statement is true. SOAP messages are transmitted over HTTP, which is the standard protocol for web communications. Because HTTP is typically allowed through firewalls and proxy servers, SOAP messages can be transmitted reliably over the internet. In contrast, RPC calls are often blocked by firewalls and proxy servers, making them less reliable for internet-based applications.