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

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: \[ {\text{Option (A)}} \]