---
title: "Discussion on \"05. Networking\" | Hashnode"
description: "Discussion on \"05. Networking\". DNS\n\n\nPing from system A to B.\n\nWant to ping host B as db. But it is not recognizing. Host A is unaware of a host name ‘db’.\n\nNeed to tell host A that when I am trying to ping ‘db’, I mean it to ping host B. And we did it by adding an entry to /etc/h..."
url: "https://hashnode.com/posts/05-networking/67d707fa8b4846bb2101681a"
---

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# [05\. Networking](https://linuxfromscratch.hashnode.dev/05-networking?utm_source=hashnode&utm_medium=feed)

DNS Ping from system A to B. Want to ping host B as db. But it is not recognizing. Host A is unaware of a host name ‘db’. Need to tell host A that when I am trying to ping ‘db’, I mean it to ping host B. And we did it by adding an entry to /etc/h...

Mar 16, 2025 · 8 min read · linuxfromscratch.hashnode.dev  
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-   [#ip-address](https://hashnode.com/tag/ip-address)
-   [#dns-resolver](https://hashnode.com/tag/dns-resolver)
-   [#nslookup](https://hashnode.com/tag/nslookup)
-   [#networking](https://hashnode.com/tag/networking)

## Written by

[Arindam Baidya](https://hashnode.com/@ArindamB)

@ArindamB · Kolkata, India

  
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🚀 Aspiring DevOps & Cloud Engineer | Passionate about Automation, CI/CD, Containers, and Cloud Infrastructure ☁️ I work with Docker, Kubernetes, Jenkins, Terraform, AWS (IAM & S3), Linux, Shell Scripting, and Git to build efficient, scalable, and secure systems. Currently contributing to DevOps-driven projects at Assurex e-Consultant while continuously expanding my skills through hands-on cloud and automation projects. Sharing my learning journey, projects, and tutorials on DevOps, AWS, and cloud technologies to help others grow in their tech careers. 💡 Let’s learn, build, and innovate together!

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