nerdexam
Cisco

300-540 · Question #13

How does SR-IOV move data directly to and from the network adapter?

The correct answer is C. Bypassing the hypervisor. SR-IOV (Single Root I/O Virtualization) allows a VM to access the network interface hardware directly, without going through the hypervisor's virtual switch. This is achieved by: Assigning Virtual Functions (VFs) directly to VMs Allowing high-performance, low-latency packet I/O…

Network Functions Virtualization (NFV)

Question

How does SR-IOV move data directly to and from the network adapter?

Options

  • AUsing the STP PortFast
  • BBypassing the guest operating system
  • CBypassing the hypervisor
  • DUsing the STP VLAN root

How the community answered

(36 responses)
  • A
    14% (5)
  • B
    6% (2)
  • C
    75% (27)
  • D
    6% (2)

Explanation

SR-IOV (Single Root I/O Virtualization) allows a VM to access the network interface hardware directly, without going through the hypervisor's virtual switch. This is achieved by: Assigning Virtual Functions (VFs) directly to VMs Allowing high-performance, low-latency packet I/O Bypassing the hypervisor datapath Therefore, SR-IOV does not bypass the guest OS; it bypasses the hypervisor I/O virtualization layer, delivering near-native performance.

Topics

#SR-IOV#hypervisor bypass#I/O virtualization#NFV

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