AZ-800 Question #277: Real Exam Question with Answer & Explanation

Question

Which of the following schedulers provide a fair share and preemptive round-robin scheduling approach for guest virtual processors in Windows Server 2016 Hyper-V?

Options

• AClassic Scheduler
• BCore Scheduler
• CRoot Scheduler
• DNone of these

Explanation

{"question_number": 3, "question": "Which of the following schedulers provide a fair share and preemptive round-robin scheduling approach for guest virtual processors in Windows Server 2016 Hyper-V?", "correct_answer": "A", "explanation": "The Classic Scheduler is the default Hyper-V hypervisor scheduler in Windows Server 2016. It uses a fair-share, preemptive round-robin algorithm to schedule guest virtual processors (VPs) across the available logical processors on the host. Each guest VP competes for host CPU time in a weighted round-robin fashion to ensure fair distribution. The Core Scheduler was introduced later (in Windows Server 2019 updates and Windows 10) and schedules guest VPs as pairs aligned to physical CPU cores to mitigate side-channel attacks like Spectre/Meltdown. The Root Scheduler allows the root (host) OS scheduler to manage guest VP scheduling directly, a newer approach used for specific isolation scenarios.", "generated_by": "claude-sonnet", "llm_judge_score": 4}

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