220-1101 Question #967: Real Exam Question with Answer & Explanation

Question

A technician is experimenting with network configurations and has connected two laptops to an unmanaged switch. The technician configured one of the laptops with a static IP address of 192.168.1.1 and the other with a static IP address of 192.168.2.2. The laptops are not communicating with each other. Which of the following is the most likely explanation for this issue?

Options

• AThe technician needs to use a hub instead of a switch.
• BThe wireless NICs are malfunctioning.
• CPoE interferes with intersubnet communication.
• DThe laptops do not have access to a router.

Explanation

The laptops cannot communicate because they are on different subnets (192.168.1.x and 192.168.2.x) and lack a router to facilitate inter-subnet communication.

Common mistakes.

• A. A switch is more efficient than a hub and provides better performance; using a hub would not resolve the subnet issue and is generally a worse choice.
• B. The problem describes static IP addresses and connection through a switch, implying wired connections, making wireless NIC malfunction irrelevant to this specific issue.
• C. PoE (Power over Ethernet) provides electrical power over Ethernet cables and does not interfere with or facilitate inter-subnet communication.

Concept tested. IP addressing and subnetting - inter-subnet communication

Reference. https://learn.microsoft.com/en-us/windows-server/networking/dns/configure/understanding-tcp-ip-addressing-and-subnetting

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