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Zorluk: ZorNetwork Types and Topologies

A field technician is auditing a newly installed network infrastructure for a branch office. The audit reveals two specific design decisions:
1. A group of wearable inventory scanners communicating directly with a handheld terminal over a distance of 2 meters using a short-range wireless protocol is documented as a Local Area Network (LAN).
2. An unmanaged Layer 2 network switch was installed at the demarcation point to interconnect the branch office's local private IP subnet with an ISP's routed Metropolitan Area Network (MAN) link.

Which of the following evaluations correctly explains why these design decisions are flawed?

  1. The wearable scanner communication is a Personal Area Network (PAN) rather than a LAN, and interconnecting separate IP subnets across the MAN link requires a Layer 3 router rather than an unmanaged Layer 2 switch.Cevap
  2. B
    The wearable scanner communication is a Wide Area Network (WAN) due to its wireless protocol, while an unmanaged Layer 2 switch is fully capable of routing traffic between separate subnets over a MAN link.
  3. C
    The wearable scanner communication is correctly categorized as a LAN, but an unmanaged Layer 2 switch is flawed because it cannot pass Ethernet frames through a physical demarcation cable.
  4. D
    The wearable scanner communication is a Storage Area Network (SAN), and interconnecting to a MAN link requires a high-density patch panel rather than an active networking device.

Cevap

The wearable scanner communication is a Personal Area Network (PAN) rather than a LAN, and interconnecting separate IP subnets across the MAN link requires a Layer 3 router rather than an unmanaged Layer 2 switch.
Personal Area Networks (PANs) encompass short-range individual device connections (typically under 10 meters, such as Bluetooth scanners or headsets). Meanwhile, connecting a local network to an external ISP network (such as a MAN or WAN link) involves crossing network boundaries between different IP subnets, which requires a Layer 3 router capable of IP routing and network address translation.

Adım Adım Çözüm

1
Analyze the scope of the scanner connection
Identified as a Personal Area Network (PAN)
Short-range wireless communication operating within a localized personal boundary (approx. 2 meters, e.g., Bluetooth) is classified as a PAN, not a LAN.
2
Analyze the network boundary device requirement at the demarcation point
Identified requirement for a Layer 3 router
Unmanaged Layer 2 switches only switch frames within the same local broadcast domain (IP subnet) using MAC addresses. Boundary connections between a local private subnet and a service provider's routed MAN require a Layer 3 router to forward packets based on IP addresses.

Anahtar Kavram

Network Scope Classifications (PAN vs. LAN) and Layer 2 vs. Layer 3 Boundaries
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Konular

Network Types and Topologies

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