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Question 175 - CV0-004 discussion

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An integration application that communicates between different application and database servers is currently hosted on a physical machine. A P2V migration needs to be done to reduce the hardware footprint. Which of the following should be considered to maintain the same level of network throughput and latency in the virtual server?

A.
Upgrading the physical server NICs to support 10Gbps
Answers
A.
Upgrading the physical server NICs to support 10Gbps
B.
Adding more vCPU
Answers
B.
Adding more vCPU
C.
Enabling SR-IOV capability
Answers
C.
Enabling SR-IOV capability
D.
Increasing the VM swap/paging size
Answers
D.
Increasing the VM swap/paging size
Suggested answer: C

Explanation:

SR-IOV stands for Single Root I/O Virtualization, which is a technology that allows a physical network adapter to be partitioned into multiple virtual functions (VFs) that can be directly assigned to virtual machines (VMs). This way, the network traffic bypasses the software layer of the hypervisor and the virtual switch, and goes directly from the VM to the physical adapter. This reduces the CPU overhead, the network latency, and the packet loss, and improves the network throughput and scalability. SRIOV can achieve near-native performance for network-intensive applications, such as an integration application that communicates between different application and database servers. By enabling SRIOV capability on the physical server and the virtual server, the P2V migration can maintain the same level of network throughput and latency as the original physical machine. Reference: High performance network virtualization with SR-IOV; Supercharge Your Network Throughput via Single Root I/O Virtualization (SR-IOV); Overview of Single Root I/O Virtualization (SR-IOV).

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asked 02/10/2024
Priya Ketkar
36 questions
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