Step 1: Understanding the Concept:
Linux is a free, open-source operating system based on UNIX.
It is known for its security, stability, and multiprocessing capabilities.
Step 2: Analyzing the Options:
• (A) It is more prone to virus attack as compared to MS-Window:
This is false. Linux is generally considered more secure and less prone to viruses than Windows.
• (B) It is free: True.
• (C) It is similar to UNIX: True.
• (D) It is used for multiprocessing: True.
Step 3: Final Answer:
Therefore, option (A) is correct.