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📝 IBM OS/360

📖 From Operating System • 20. Influential Operating Systems • 14 questions available

Practice MCQs for IBM OS/360. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

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📝 Sample Questions

Q1. A programmer needs to submit a batch job on an IBM OS/360 system that prints a report after processing. Which JCL statement should be used to specify the output device?

🔹 A. //SYSOUT

🔹 B. //OUTPUT

🔹 C. //PRINTER

🔹 D. //DEST

💡 Difficulty: easy | ✅ Correct: A

Q2. Why did IBM introduce multiprogramming in OS/360?

🔹 A. To reduce CPU idle time and improve throughput

🔹 B. To simplify programming language syntax

🔹 C. To enable graphical user interfaces

🔹 D. To increase disk storage capacity

💡 Difficulty: medium | ✅ Correct: A

Q3. What purpose does the Linkage Editor (IEWL) serve in OS/360 development?

🔹 A. It combines object modules into an executable program

🔹 B. It manages virtual memory paging

🔹 C. It provides a graphical debugging interface

🔹 D. It encrypts source code for security

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

📝 Feature Migration in Operating Systems 📝 Early Computer Systems 📝 Dedicated computer systems 📝 Shared computer systems 📝 Overlapped I/O operating system

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