📡 Ping

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📡 Ping Connectivity Testing

Basic Network Reachability Verification Tool

📖 What is Ping?

Ping என்பது ஒரு Device மற்றொரு Device-ஐ Network மூலம் Reach செய்ய முடியுமா என்பதை சரிபார்க்க பயன்படும் Diagnostic Command ஆகும்.

Ping = Test Network Connectivity

🎯 Why Use Ping?

✔ Verify Connectivity

✔ Check Network Reachability

✔ Measure Response Time

✔ Detect Network Issues

✔ Initial Troubleshooting Tool

⚙ How Ping Works?

Ping ICMP Echo Request அனுப்புகிறது.

Destination Device ICMP Echo Reply அனுப்புகிறது.

Reply வந்தால் Connectivity உள்ளது என்று அர்த்தம்.

💻 Basic Commands

ping 8.8.8.8

ping google.com

ping 192.168.1.1

📊 Sample Output

Reply from 8.8.8.8:
bytes=32
time=15ms
TTL=118

time = Response Time

TTL = Time To Live

🚨 Common Problems

Request Timed Out

Destination Host Unreachable

General Failure

DNS Resolution Failure

🔧 Troubleshooting Steps

✔ Check IP Address

✔ Verify Gateway

✔ Verify Network Cable

✔ Check Firewall Rules

✔ Verify DNS Settings

🌍 Real World Usage

Internet Testing

Router Verification

Server Monitoring

ISP Troubleshooting

Enterprise Networks

🎤 Interview Questions

What is Ping?

Which Protocol Does Ping Use?

What is ICMP?

What is TTL?

What Does Request Timed Out Mean?

📝 Summary

Ping என்பது Network Troubleshooting-ல் முதலில் பயன்படுத்தப்படும் மிக முக்கியமான Diagnostic Tool ஆகும்.

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