Core Networking Concepts 1.1 Local and Wide Area Networks A local area network (LAN) connects computers and devices within a limited geographic area, forming a private communication network. In contrast, a wide area network (WAN), also known as the public internet, links multiple LANs or metropolita...
TCP Control FlagsTCP headers utilize specific control bits to manage session states. Three critical flags control the connection lifecycle:SYN (Synchronize): Initiates a connection and synchronizes initial sequence numbers.ACK (Acknowledgment): Confirms the receipt of data packets. Once a connection...
Simulating Large Data Transmission with RedisTo analyze TCP behavior with large payloads, a Java client can be used to push data significantly exceeding the typical MTU size into a Redis instance. The following example generates a string payload of approximately 38KB and sends it to the server.impor...
Network Protocol Architecture Computer networks rely on layered communication standards that define how devices exchange data. The OSI model conceptualizes seven distinct layers, though the TCP/IP stack commonly implements four functional layers in practice. Physical and Data Link Layers At the phys...
Socket Programming Interface The socket() Function The function signature is: #include <sys/types.h> #include <sys/socket.h> int socket(int domain, int type, int protocol); The socket() function behaves similarly to open(), creating a communication endpoint for network interaction. On su...
TCP/IP Protocol Suite The TCP/IP protocol suite serves as the foundational communication language and standard for interoperability across diverse network architectures and operating systems. Core Elements of Host Communication 1. IP Addressing An IP address uniquely identifies a node's network loca...
Computer networks enable connectivity across diverse hardware and operating systems. To facilitate reliable data exchange, standardized communication rules—known as network protocols—govern transmission formats, rates, and procedures. Key protocols include IP (Internet Protocol) at the network layer...