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Zorluk: Çok zorNetwork Hardware Devices

A network technician is configuring a newly expanded corporate office floor. The layout requires three separate broadcast domains (Voice, Corporate Data, and Guest Access) to enforce network security policy and limit broadcast traffic. Currently, all workstation ports terminate at a patch panel connected to a single unmanaged switch. Users report that their computers are assigned IP addresses in the 169.254.x.x range and are unable to communicate across subnets or access external resources. Additionally, central management and hardware-based packet inspection between subnets are required at wire speed. Which network hardware device should the technician deploy to perform inter-VLAN routing, enable VLAN trunking, and relay DHCP requests to the corporate DHCP server?

  1. Layer 3 switchCevap
  2. B
    Unmanaged Layer 2 switch
  3. C
    DNS server
  4. D
    Passive patch panel

Cevap

Deploying a Layer 3 switch resolves the connectivity and addressing issues by providing inter-VLAN routing, VLAN management, and DHCP relay functionality at hardware wire speeds.
A Layer 3 switch is designed to process both Layer 2 MAC addresses and Layer 3 IP addresses. It enables logical network segmentation via VLANs, routes traffic between those VLANs at wire speed using dedicated hardware ASICs, and supports IP helper services to forward DHCP requests across subnets to a central server.

Adım Adım Çözüm

1
Analyze client symptoms and addressing scheme
Workstations receive 169.254.x.x (APIPA) addresses, indicating that DHCP discovery requests are failing to cross network boundaries.
Unmanaged Layer 2 switches do not forward broadcast requests across isolated subnets or support IP helper/DHCP relay features.
2
Identify architectural requirements for segmentation and routing
The network demands VLAN isolation (Voice, Corporate, Guest) and high-speed inter-VLAN routing.
Layer 2 devices operate only with MAC addresses within a single broadcast domain and cannot route traffic based on IP subnets.
3
Select the appropriate network hardware device
A Layer 3 switch is selected.
Layer 3 switches inspect network-layer IP headers, execute hardware-based inter-VLAN routing via ASIC chips, process access control lists (ACLs), and relay DHCP broadcasts to centralized servers across subnets.

Anahtar Kavram

Layer 3 Switch Capabilities and Inter-VLAN Routing
Tahmini Süre:2m 0s
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Network Hardware Devices

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