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Zorluk: OrtaNetwork Hardware Devices

A network technician is troubleshooting severe network performance issues on a legacy workstation segment. Diagnostic logs show extremely high packet collision rates caused by all endpoints sharing a single collision domain through a network hub. All workstations must remain on the existing single IP subnet. Which network hardware device should the technician deploy to replace the hub and eliminate packet collisions?

  1. An unmanaged Ethernet switchCevap
  2. B
    A Layer 3 router
  3. C
    A DHCP server appliance
  4. D
    A Wi-Fi access point in repeater mode

Cevap

An unmanaged Ethernet switch
An unmanaged Ethernet switch operates at Layer 2 (Data Link) of the OSI model. By maintaining a MAC address table, a switch microsegments the network so that each physical port receives its own dedicated collision domain. Switching from a hub to an Ethernet switch enables full-duplex operation, eliminating collisions while keeping all host computers within the existing single IP subnet.

Adım Adım Çözüm

1
Analyze the network problem described in the scenario
The current network utilizes a hub, which acts as a multiport physical layer repeater where all connected ports share a single half-duplex collision domain.
Hubs transmit incoming bits out of all other ports, leading to packet collisions when multiple hosts transmit simultaneously.
2
Identify the hardware requirement for isolating collision domains while retaining a single IP subnet
A Layer 2 Ethernet switch inspects MAC address tables to isolate traffic so that each individual port forms its own isolated collision domain.
Switches enable full-duplex communication per port without requiring Layer 3 routing or breaking up the single IP subnet.
3
Evaluate candidate hardware devices
An unmanaged Ethernet switch fulfills all scenario requirements directly.
It replaces shared collision domain behavior with dedicated microsegmentation at Layer 2.

Anahtar Kavram

Collision domain microsegmentation using Layer 2 switches versus Layer 1 hubs
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Network Hardware Devices

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