Java J2EE Interview Questions for Senior Developers 2020-2021 - 4

Question: 16

What is security domain?

A scope over which security policies are defined and enforced by a security administrator. A security policy domain has a collection of users (or principals), uses a well defined authentication protocol for authenticating users (or principals), and may have groups to simplify setting of security policies.

Question: 17

What is service element?

A representation of the combination of one or more Connector components that share a single engine component for processing incoming requests.

Question: 18

What is transaction isolation level?

The degree to which the intermediate state of the data being modified by a transaction is visible to other concurrent transactions and data being modified by other transactions is visible to it.

Question: 19

What is authorization?

The process by which to a method or resource is determined.

Authorization depends on the determination of whether the principal associated with a request through authentication is in a given security role. A security role is a logical grouping of users defined by the person who assembles the application. A deployer maps security roles to security identities. Security identities may be principal or groups in the operational environment.

Question: 20

What is authentication?

The process that verifies the identify of a user, device or other entity in a computer system, usually as a prerequisite to allowing access to resources in a system. The Java servlet specification requires three types of authentication basic, form based and mutual and supports digest authentication.