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X.25 - What is X.25 Networks? - Computer Notes
X.25
X.25 over TCP/IP - Cisco
4.3.2 Протоколы сетей X.25
X.25 - Wikipedia
Simplify: 3^5 × 10^5 × 25 / 5^7 × 6^5 - Exponent and Powers Class 7
X.25 Protocol - Explained - YouTube
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