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Most of them are in text format:

• IP routing protocol - part 1 - introduction
• IP routing protocol - part 2 - RIP
• IP routing protocol - part 3 - IGRP/EIGRP 
• IP routing protocol - part 4 - OSPF
• IP routing protocol - part 5 - OSI
• ICMP Routing Protocol
• Socket programming 1- html
• Socket programming 2- text
• MORE...