Question

Match the operating systems in List-I with their correct characteristics in List-II.

Codes:

• A. a - ii, b - i, c - iii, d - iv
• B. a - ii, b - i, c - iv, d - iii
• C. a - iii, b - iv, c - i, d - ii
• D. a - iii, b - i, c - iv, d - ii

Hint:

Remember these standard associations:
• Batch OS $\rightarrow$ No user interaction
• RTOS $\rightarrow$ Immediate response
• Time Sharing OS $\rightarrow$ Multiple users share CPU
• Distributed OS $\rightarrow$ Multiple interconnected systems These four matches frequently appear in competitive examinations.

Answer 1

The Correct Option is A

Concept: Different operating systems are designed to satisfy different computing requirements. Understanding their characteristics helps in identifying their applications and behavior. Let us analyze each operating system individually and match it with its defining feature.

Step 1: Matching (a) Batch Operating System. A Batch Operating System executes jobs in groups called batches. The user submits jobs and does not interact with the computer while the jobs are running. Characteristics include:
• No direct user interaction
• Jobs processed sequentially
• Suitable for repetitive tasks Therefore: \[ \text{Batch OS} \rightarrow \text{No user interaction} \] Hence: \[ a \rightarrow ii \]

Step 2: Matching (b) Real Time Operating System. A Real Time Operating System must respond immediately to external events. Examples include:
• Air traffic control systems
• Industrial automation
• Medical monitoring systems Thus: \[ \text{Real Time OS} \rightarrow \text{Immediate response required} \] Hence: \[ b \rightarrow i \]

Step 3: Matching (c) Time Sharing Operating System. Time-sharing systems divide CPU time among multiple users. Each user receives a small time quantum, creating the illusion that everyone has dedicated access to the machine. Therefore: \[ \text{Time Sharing OS} \rightarrow \text{Multiuser share CPU} \] Hence: \[ c \rightarrow iii \]

Step 4: Matching (d) Distributed Operating System. A Distributed Operating System manages multiple interconnected computers and presents them as a single unified system. Characteristics include:
• Resource sharing
• Parallel processing
• Network-based communication Therefore: \[ \text{Distributed OS} \rightarrow \text{Multiple systems connected} \] Hence: \[ d \rightarrow iv \]

Step 5: Writing the final matching. \[ a \rightarrow ii,\qquad b \rightarrow i,\qquad c \rightarrow iii,\qquad d \rightarrow iv \] This corresponds exactly to: \[ \boxed{\text{Option (A)}} \]