Consider the following statements: I. telnet, ftp and http are application…
2004
Consider the following statements:
I. telnet, ftp and http are application layer protocols.
II. EJB (Enterprise Java Beans) components can be deployed in a J2EE (Java2 Enterprise Edition) application server.
III. If two languages conform to the Common Language Specification (CLS) of the Microsoft.NET framework, then a class defined in any one of them may be inherited in the other.
Which statements are true?
Answer: D. I, II and III — Answer: All three statements are true. Statement I: telnet, ftp and http are application-layer protocols. These protocols operate at the application layer of…
- A.
l and II only
- B.
II and III only
- C.
l and III only
- D.
I, II and III
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Correct answer: D
Answer: All three statements are true.
Statement I: telnet, ftp and http are application-layer protocols. These protocols operate at the application layer of the TCP/IP model and provide end-user services such as remote login, file transfer, and web access.
Statement II: EJB components can be deployed in a J2EE application server. Enterprise Java Beans are server-side components designed to run inside a J2EE (Java EE) application server which provides services like transaction management and security.
Statement III: If two languages conform to the .NET Common Language Specification (CLS), a class defined in one can be inherited in the other. CLS defines rules for language interoperability on the .NET runtime, so CLS-compliant types are usable across languages. Note: inheritance across languages requires the type to be accessible and not sealed and the members used must be CLS-compliant.
Therefore, all three statements are correct.