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GSLC · Question #575

Matt, the network engineer, has been tasked with separating network traffic between virtual machines on a single hypervisor. Which of the following would he implement to BEST address this…

The correct answer is A. Virtual switch F. VLAN. Separating VM traffic on a single hypervisor requires both a virtual switch to provide the switching fabric and VLANs to logically segment traffic between virtual machines.

Security Architecture & Engineering

Question

Matt, the network engineer, has been tasked with separating network traffic between virtual machines on a single hypervisor. Which of the following would he implement to BEST address this requirement? (Select TWO).

Options

  • AVirtual switch
  • BNAT
  • CSystem partitioning
  • DAccess-list
  • EDisable spanning tree
  • FVLAN

How the community answered

(39 responses)
  • A
    92% (36)
  • B
    3% (1)
  • C
    3% (1)
  • D
    3% (1)

Why each option

Separating VM traffic on a single hypervisor requires both a virtual switch to provide the switching fabric and VLANs to logically segment traffic between virtual machines.

AVirtual switchCorrect

A virtual switch (vSwitch) provides the internal Layer 2 switching infrastructure that connects VMs on the same hypervisor, and is the foundational component required for VM-to-VM communication and traffic control.

BNAT

NAT translates IP addresses between network zones but does not create logical separation or segmentation between VMs sharing the same hypervisor.

CSystem partitioning

System partitioning divides physical hardware resources (CPU, memory) between partitions, not network traffic between VMs.

DAccess-list

Access-lists can filter traffic after it traverses a path, but they do not create the network separation mechanism needed between VM segments.

EDisable spanning tree

Disabling spanning tree removes loop prevention from the switching topology and would cause broadcast storms, not traffic separation.

FVLANCorrect

VLANs applied to the virtual switch enable logical traffic segmentation between VMs, ensuring that traffic from one group of VMs cannot reach another group even though they share the same physical host and virtual switch.

Concept tested: Virtual switch and VLAN segmentation for hypervisor VM isolation

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-350344DE-483A-42ED-B0E2-C811EE927D59.html

Topics

#VM isolation#virtual switch#VLAN#hypervisor security

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