Computer Networks
51 articles in this topic
Flow Control in the Data Link Layer: Stop-and-Wait, Sliding Window, and Worked Examples
See Stop-and-Wait, sliding windows, Go-Back-N, and Selective Repeat as parts of one system. One link carries every calculation from efficiency to sequence bits.
Updated 9 Aug 20266 min read62 viewsComputer Networks
Data Link Layer Error Control in Computer Networks: Concepts, CRC, Hamming and Worked Examples
Build error control from first principles, then work through parity, CRC, Hamming code and checksum using bits you can verify by hand.
Updated 6 Aug 20266 min read116 viewsComputer Networks
Data Link Layer Access Control: Medium Access Protocols with Worked Examples
Understand where access control sits inside the MAC sublayer, compare random, controlled and channelized access, and solve the ALOHA and CSMA/CD calculations students commonly mix up.
Updated 4 Aug 20266 min read53 viewsComputer Networks
Cyber and Info Security in Computer Networks: Complete Guide with Worked RSA and Diffie-Hellman Examples
Build the topic from security goals to firewalls, then hand-calculate RSA encryption, an RSA signature, and a Diffie-Hellman shared secret. Includes exam traps and an interview-ready TLS explanation.
Updated 1 Aug 20266 min readComputer Networks
Application Layer in Computer Networks: Protocols, Worked Examples, and How GATE Tests It
Build a clear application-layer model, work through DNS and HTTP timing problems, revise the major protocols, and avoid the traps that cost easy marks.
Updated 29 Jul 20266 min readComputer Networks
Express.js REST API Tutorial: Routing, Middleware, and Error Handling the Production Way
Build one small courses API and trace every request through parsing, routing, 404 handling, and a single error path.
Updated 27 Jul 20266 min readComputer Networks
OSI vs TCP/IP Model for GATE: Which Layer Does What, with PYQ Traps
Map every OSI and TCP/IP layer to its function, PDU, address and device. Then trace an HTTP request through encapsulation and fix the usual layer traps.
Updated 24 Jul 20266 min read58 viewsComputer Networks
CSS Box Model, Positioning and z-index Explained with Worked Layout Examples
Calculate a CSS box's real width, choose the right position value, and trace z-index with exact numbers. The examples turn common layout bugs into rules.
Updated 22 Jul 20266 min readComputer Networks
TCP Congestion Control for GATE
Track cwnd at one fixed point in every round, apply the correct growth rule, and reset it on the stated loss signal. A worked ten-RTT table follows the sawtooth.
Updated 20 Jul 20266 min read55 viewsComputer Networks
IBPS SO IT Officer Networking: professional knowledge topics to master
IBPS SO IT Officer Networking: master the OSI and TCP/IP models, IP addressing, key protocols and network security for the Professional Knowledge paper.
Updated 25 Jul 20265 min read873 viewsComputer Networks
Propositional and Predicate Logic: Truth Tables, Quantifiers and Inference
Propositional and predicate logic for GATE CS: connectives, truth tables, logical equivalences, quantifiers and negation, plus a worked inference proof.
Updated 15 Jul 20266 min read60 viewsComputer Networks
Routing Algorithms: distance vector vs link state, with a worked Dijkstra
Routing algorithms explained: routing vs forwarding, distance vector with Bellman-Ford and count-to-infinity, link state with Dijkstra, plus a worked example.
Updated 29 Jul 20266 min read133 viewsComputer Networks