Computer Network in Computer Science Engineering is an important subject of GATE Syllabus, BARC, ISRO & other CS exams. This subject carries a weightage of average 7-9 marks in GATE.

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Topic Covered:

1. Concept of layering, LAN technologies (Ethernet)
2. Flow and error control techniques, switching
3. IPv4/IPv6, routers and routing algorithms (distance vector, link state)
4. TCP/UDP and sockets, congestion control
5. Application layer protocols (DNS, SMTP, POP, FTP, HTTP)
6. Basics of Wi-Fi
7. Network security: authentication, basics of the public key and private key cryptography, digital signatures and certificates, firewalls

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