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Simple network mask question

Last updated on December 23, 2018

        I have a question about network masks.
  • Host A IP : 10.0.0.1/24
  • Host B IP : 10.0.0.2/25
Why is PC1 able to ping PC2, but when PC2 tries to ping PC1, it times out? Can I get a detailed explanation? Edit for clarification: On PC1 we did ping -c2 10.0.0.2, and we did get a reply successfully from PC2. On PC2 we did ping -c2 10.0.0.1, and we did not get a reply successfully from PC1. We want to know why this happened? enter image description here Update: We used 10.0.0.200/25 instead, and were able to ping PC1 to PC2, but not PC2 to PC1, which is what we wanted. Can someone explain why this is?

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