Computer Networks

51 articles in this topic

Application Layer Protocols: DNS, HTTP, and email, with a DNS walk-through

Application layer protocols explained: client-server vs P2P, DNS hierarchy and resolution, HTTP methods and status codes, SMTP POP IMAP, and FTP connections.

Updated 14 Jul 20266 min read57 viewsComputer Networks

TCP vs UDP: the transport layer explained, with the exam angle

TCP vs UDP explained: the transport layer's job, connection-oriented vs connectionless, reliability, congestion control, headers, and when to use each.

10 Jul 20265 min read129 viewsComputer Networks

IP addressing and subnetting: a worked guide with the exam angle

IP addressing and subnetting explained: IPv4 structure, classful vs CIDR, subnet masks, a fully worked subnetting example with ranges and broadcast addresses.

Updated 14 Jul 20265 min read91 viewsComputer Networks