100-150 Question 72
Select 2You are troubleshooting a network issue where a device with the IP address 192.168.1.10/24 is unable to communicate with another device at 192.168.2.15/24. Which of the following could explain why the communication is failing?
- A
The devices are in different subnets and require a router to communicate.
- B
The subnet mask for both devices is incorrectly configured.
- C
The IP address 192.168.2.15 is not in the same broadcast domain as 192.168.1.10.
- D
The default gateway on both devices is misconfigured.
- E
The IP address 192.168.1.10 is not valid in the /24 subnet.
Show answer and explanation
Correct answers: A, C
Explanation
The issue arises because the two devices are in different subnets, as indicated by their IP addresses and the /24 subnet mask. Devices in different subnets require a router to facilitate communication. Additionally, devices in different subnets do not share the same broadcast domain, which explains why direct communication is failing.
- A. Correct.
Correct. A /24 subnet mask means the devices are in different subnets (192.168.1.0/24 and 192.168.2.0/24), so a router is required for communication.
- B. Incorrect.
Incorrect. The subnet mask /24 is valid and correctly configured for both devices.
- C. Correct.
Correct. Devices in different subnets do not share the same broadcast domain, which impacts direct communication without routing.
- D. Incorrect.
Incorrect. While a misconfigured default gateway could cause issues, it is not specified in the scenario and does not explain the subnet mismatch.
- E. Incorrect.
Incorrect. The IP address 192.168.1.10 is valid within the 192.168.1.0/24 subnet.