2V0-21.23 Question 66
Single answerA VMware administrator is configuring a vSphere Distributed Switch (vDS) and wants to ensure that critical traffic, such as vMotion and management, is guaranteed bandwidth even during periods of high network usage. Which networking policy should the administrator configure to achieve this?
- A
Traffic Shaping Policy
- B
Network I/O Control (NIOC)
- C
Port Mirroring
- D
Security Policy
Show answer and explanation
Correct answer: B
Explanation
To guarantee bandwidth for critical traffic such as vMotion and management during high network utilization, the administrator should configure Network I/O Control (NIOC). NIOC allows for the prioritization and allocation of bandwidth based on traffic types, ensuring that essential network functions are not affected by other traffic flows. Other policies, like Traffic Shaping, focus on rate limitations, and Security Policy addresses security features, making NIOC the appropriate choice in this scenario.
- A. Incorrect.
Traffic Shaping Policy controls ingress and egress traffic rates but does not guarantee bandwidth. It is used to limit or throttle traffic rather than prioritize or control resource allocation.
- B. Correct.
Network I/O Control (NIOC) allows the administrator to prioritize and allocate bandwidth for specific types of traffic, such as vMotion and management traffic, ensuring that critical traffic is not impacted during high utilization.
- C. Incorrect.
Port Mirroring is used for network traffic analysis and troubleshooting but does not provide any mechanism for bandwidth allocation or prioritization.
- D. Incorrect.
Security Policy focuses on layer 2 networking features such as promiscuous mode, MAC address changes, and forged transmits, but it does not manage bandwidth or traffic prioritization.