To solve this question, the user needs to have knowledge about the EJB (Enterprise JavaBeans) specification architecture.

The EJB specification architecture defines the structure and behavior of Enterprise JavaBeans, which are server-side components used to develop scalable and distributed enterprise applications.

Let's go through each option and explain why it is right or wrong:

A. transactional components: This option is incorrect. The EJB specification architecture does define transactional components. EJBs can participate in transactions, allowing for ACID (Atomicity, Consistency, Isolation, Durability) properties.

B. client-side security and encryption: This option is correct. The EJB specification architecture does not define client-side security and encryption. It primarily focuses on server-side components and does not specify how the client-side should handle security and encryption.

C. distributed object components: This option is incorrect. The EJB specification architecture does define distributed object components. EJBs are designed to be distributed across multiple servers and can be accessed remotely.

D. server-side components: This option is incorrect. The EJB specification architecture does define server-side components. EJBs are specifically designed to run on the server-side and provide services to client applications.

Therefore, the correct answer is:

The Answer is: B