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Zorluk: ZorNetwork Components Roles and Functions

A network engineer is reviewing a branch deployment where a bare-metal Type 1 hypervisor host running multiple virtual machines (VMs) across VLAN 10 and VLAN 20 is connected via a single interface to a physical Layer 2 switch. Users report that VMs on VLAN 10 cannot communicate with VMs on VLAN 20, and broadcast storms generated by a misconfigured endpoint on VLAN 10 are flooding all physical ports on the switch. Which statement correctly identifies the operational roles of the network components involved and the required architectural change?

  1. The Layer 2 switch limits collision domains per port but forwards broadcast frames across the entire VLAN; inter-VLAN traffic requires a Layer 3 device or router-on-a-stick, while the Type 1 hypervisor runs directly on hardware to manage virtual switch port groups.Cevap
  2. B
    The Layer 2 switch automatically separates broadcast domains across all ports; inter-VLAN routing fails because a Type 2 hosted hypervisor is required to bridge virtual network interface cards to physical hardware.
  3. C
    The Type 1 hypervisor requires an underlying host operating system to process Layer 3 forwarding between virtual switches, which prevents the connected Layer 2 switch from forwarding broadcast frames.
  4. D
    The Layer 2 discovery protocol (CDP/LLDP) on the switch must be disabled to allow the virtual switch inside the hypervisor to perform default gateway functions across VLANs.

Cevap

The Layer 2 switch limits collision domains per port but forwards broadcast frames across the entire VLAN; inter-VLAN traffic requires a Layer 3 device or router-on-a-stick, while the Type 1 hypervisor runs directly on hardware to manage virtual switch port groups.
Layer 2 switches isolate collision domains on a per-port basis, but broadcast traffic is flooded across all ports belonging to the same VLAN. Furthermore, traffic traversing different VLANs (VLAN 10 to VLAN 20) requires a Layer 3 routing function (such as a Layer 3 switch or router-on-a-stick). A Type 1 hypervisor operates bare-metal directly on physical hardware to manage virtual switches and guest VMs.

Adım Adım Çözüm

1
Analyze the role of a Layer 2 switch regarding domain boundaries.
A Layer 2 switch creates a separate collision domain for each connected port, but all ports assigned to a single VLAN belong to the same broadcast domain. Broadcast traffic will flood all ports in that VLAN.
Layer 2 switches forward frames based on MAC addresses and broadcast frames (FF:FF:FF:FF:FF:FF) out all unassigned/active ports in the VLAN.
2
Analyze the requirement for inter-VLAN communication between VLAN 10 and VLAN 20.
Communication across distinct VLANs (IP subnets) requires Layer 3 packet forwarding (routing). A standard Layer 2 switch cannot perform IP routing without a Layer 3 device or Layer 3 switch capabilities.
VLANs define logical Layer 2 boundaries; traversing between different VLANs requires rewriting Layer 2 headers via a default gateway router or Layer 3 switch.
3
Verify the role and definition of a Type 1 hypervisor.
A Type 1 hypervisor (bare-metal) installs directly on the physical host hardware and manages virtual switches (vSwitches) and VM access directly without relying on an intermediate desktop OS.
Understanding Type 1 hypervisor deployment clarifies that virtual networking components (port groups/VLAN tags) interface directly with the physical NICs.

Anahtar Kavram

Operational Roles of Layer 2 Switches, Routers, and Bare-Metal Type 1 Hypervisors
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Konular

Network Components Roles and Functions

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