Comprehensive C/C++ Interview Question Collection Covering Language, Data Structures, OS, Networking, Databases, and More

The document presents a large set of interview questions and topics frequently asked in C/C++ backend, desktop, embedded, and audio‑video development interviews.

C/C++ Language

Smart pointers, polymorphism, virtual functions, STL principles

Memory layout, RAII, object lifetimes, copy/move semantics

C++11/14 features, constexpr, lambda, templates, inline, const correctness

Compilation process, GCC/G++, debugging with GDB

Data Structures & Algorithms

Arrays, linked lists, trees, sorting algorithms, hash tables, Bloom filters

Dynamic programming, priority queues, graph algorithms, complexity analysis

System Programming & OS

Processes, threads, synchronization primitives, memory pools, virtual memory

Fork, copy‑on‑write, deadlock, scheduling, kernel vs user threads

Network Programming

TCP/UDP fundamentals, three‑way handshake, congestion control, HTTP/HTTPS, HTTP/2/3

epoll, select, poll, reactor/proactor models, packet framing, TCP time‑wait

Databases

MySQL storage engines, indexing, isolation levels, ACID, MVCC, binlog, sharding

Redis data structures, persistence, clustering, distributed locks, performance

Design Patterns & Architecture

Singleton, factory, abstract factory, decorator, adapter, observer, strategy, state, iterator, composite, bridge, chain of responsibility, command

RPC concepts, serialization, service discovery, load balancing, versioning, gRPC

Server Development & Distributed Systems

Authentication (JWT), distributed locks, snowflake ID, connection pooling, load balancing

Timer implementations, heart‑beat, high‑concurrency designs

Audio/Video Development

Encoding/decoding basics, codecs (H.264, HEVC), sampling rate, bitrate, latency

RTP, RTSP, WebRTC, ABR, container formats, synchronization, noise reduction

Overall, the collection serves as a comprehensive reference for preparing for technical interviews in C/C++ and related system domains.