SUBJECT / NETWORKS

Computer Networks

How machines exchange data across networks.

148 topics / 0 articles ready / 2 course paths

Computer Networks

148 headings

Module-1 (CN Foundations)5 topics

Why Networks existsPlanned
Network TypesPlanned
Internet and Backbone NetworksPlanned
Clients, Servers and PeersPlanned
How data moves in packetsPlanned

Module-2 (Network Models)6 topics

Why do we need layered ArchitecturePlanned
OSI ModelPlanned
How Data Travels Up the OSI ModelPlanned
TCP/IP ModelPlanned
OSI vs TCP/IPPlanned
Encapsulation and DecapsulationPlanned

Module-3 (Physical and Data Link Layer)14 topics

Physical LayerPlanned
Transmission MediaPlanned
Twisted Pair CablePlanned
Fiber Optic CablePlanned
Coaxial CablePlanned
Full duplex vs Half duplexPlanned
Network DevicePlanned
Mac addressPlanned
Error DetectionPlanned
Medium Access and CSMAPlanned
Address Resolution ProtocolPlanned
Network Access ControlPlanned
Why do we need STP?Planned
Spanning Tree Protocol (STP)Planned

Module-4 (Network Topologies and VLANs)7 topics

Network Topologies and VLANs IntroductionPlanned
Physical TopologiesPlanned
Hybrid TopologyPlanned
Logical TopologiesPlanned
Ethernet SwitchingPlanned
Virtual LANsPlanned
Switching vs RoutingPlanned

Module-5 (Network Layer: IP Addressing)12 topics

Introduction to Network LayerPlanned
IPv4 IntroductionPlanned
IPv4 DatagramPlanned
IP Addressing ModesPlanned
Private vs Public IPPlanned
Classful AddressingPlanned
SubnettingPlanned
Common Interview QuestionsPlanned
CIDR - Classless AddressingPlanned
IPv6 IntroductionPlanned
IPv6 DatagramPlanned
IPv6 over IPv4Planned

Module-6 (Network Layer: Routing)9 topics

Router vs ForwardingPlanned
Routing Tables BasicsPlanned
Static RoutingPlanned
Dynamic RoutingPlanned
Distance Vector Routing and RIPPlanned
Routing Loop and PreventionPlanned
Link State Routing and OSPFPlanned
Hybrid Routing and EIGRPPlanned
Border Gateway ProtocolPlanned

Module-7 (Transport Layer)7 topics

Transport Layer IntroductionPlanned
Port and SocketsPlanned
UDPPlanned
TCP-I: Connection Setup and NumberingPlanned
TCP-II: Reliability, Flow Control and Sliding WindowPlanned
TCP-III: Congestion Control and Connection ClosingPlanned
When to choose TCP/UDPPlanned

Module-8 (Application Layer)11 topics

Application Layer IntroductionPlanned
HTTP-Request Response ModelPlanned
HTTP methods and status codesPlanned
HTTP VersionsPlanned
HTTP/3 and QUICPlanned
HTTPS and TLSPlanned
Cookies, Sessions, and tokensPlanned
Rest API’sPlanned
WebSocketsPlanned
File Transfer ProtocolPlanned
Email ProtocolsPlanned

Module-9 (NAT and Internet Edge Networking)10 topics

NAT and Why do we need it?Planned
NAT Packet FlowPlanned
Types of NATPlanned
SNAT, DNAT and Port ForwardingPlanned
NAT LimitationsPlanned
DNSPlanned
DNS Record TypesPlanned
DNS SecurityPlanned
DNSSECPlanned
Dynamic Host Configuration Protocol (DHCP)Planned

Module-10 (Switching Techniques)12 topics

What is Switching and Why?Planned
Fundamental Switching TechniquesPlanned
Circuit SwitchingPlanned
Packet SwitchingPlanned
Datagram Packet SwitchingPlanned
Virtual Circuit Packet SwitchingPlanned
MPLSPlanned
Circuit Switching vs. Virtual Packet SwitchingPlanned
Message SwitchingPlanned
Why Packet Switching became backbone of InternetPlanned
Comparisons between all 3Planned
FAQs - SwitchingPlanned

Module-11 (Network Security)9 topics

Why Network Security?Planned
CIA TriadPlanned
AAA FrameworkPlanned
Common Network Security ThreatsPlanned
Firewalls and TypesPlanned
Firewall Type Comparison - L3, L4, and L7Planned
IDPSPlanned
VPNsPlanned
Zero Trust ArchitecturePlanned

Module-12 (Cryptography and Secure Protocols)15 topics

Introduction of CryptographyPlanned
Security Goals of CryptographyPlanned
Basic Cryptography TermsPlanned
Symmetric EncryptionPlanned
Asymmetric CryptographyPlanned
Diffie Hellman Key Exchange MethodPlanned
Hybrid EncryptionPlanned
Hash FunctionsPlanned
MAC and HMACPlanned
Digital SignaturesPlanned
Certificate Authority and Chain of TrustPlanned
Public Key InfrastructurePlanned
Certificate PinningPlanned
TLS and SSLPlanned
TLS Handshake and Forward SecrecyPlanned

Module-13: (Wireless Networking)10 topics

Wireless Networking IntroductionPlanned
Basics of Wireless NetworkingPlanned
Wi-Fi Joining FlowPlanned
WPA and WPA/WPA-2/WPA-3 Security HandshakePlanned
IEEE 802.11 and Wi-Fi GenerationsPlanned
Why Wi-Fi speed drops in Real LifePlanned
How Wi-Fi avoids CollisionsPlanned
Wi-Fi Frame TypesPlanned
Wi-Fi SecurityPlanned
Packet Flow: Opening a website over Wi-FiPlanned

Module-14 (Network Performance)17 topics

Introduction to Network PerformancePlanned
Metrics Deep DivePlanned
Data Transfer and Bottlenecks, BDPPlanned
Latency Sources, Delay, and TTFBPlanned
Congestion, Bufferbloat, and Congestion Collapse LoopPlanned
QoS, Traffic Shaping, and PolicingPlanned
Rate LimitingPlanned
Fixed Window Counter - Rate Limiting AlgoPlanned
Sliding Window Log - Rate Limiting AlgoPlanned
Sliding Window Counter - Rate Limiting AlgoPlanned
Token Bucket - Rate Limiting AlgoPlanned
Leaky Bucket - Rate Limiting AlgoPlanned
Concurrency Limiter - Rate Limiting AlgoPlanned
Load Balancing FundamentalsPlanned
L4 vs L7 Load BalancersPlanned
Load Balancing AlgorithmsPlanned
CDN Caching and LifestylePlanned

Module-15 (Situation Based Explanations)4 topics

What happens when you type google.comPlanned
What happens when DNS fails?Planned
What happens when you connect to public Wi-Fi?Planned
How does a CDN serve an image/video?Planned