Classification of Hate Tweets using Hybrid Deep Belief Network Algorithm -- Q-TOMEC: Q-Learning based Task Offloading in Mobile Edge Computing -- Autonomous Mobile Robot for Inventory Management in Retail Industry -- Evaluating tip selection Algorithms for IOTA Blockchain -- Randomly Hiding Secret Data Using I-Blocks and Eblocks for Image Steganography -- Diabetic Retinopathy classification using pixel level lesion segmentation -- Machine Learning based Scene Classification using Thepade's SBTC, LBP and GLCM -- Prediction of Trait Anxiety in Humans -- Face Recognition and Detection Algorithm- A Review -- Personality Recognition for Candidate Screening -- Face Identification through Facial Skeletal Features -- Blockchain Security: A Systematic Review -- Profiling Cyber Crimes from news portals using web scraping -- Differential Privacy Mechanisms: A State of the Art Survey.

This book constitutes the refereed proceedings of the Fourth International Conference on Futuristic Trends in Network and Communication Technologies, FTNCT 2021. The prime aim of the conference is to invite researchers from different domains of network and communication technologies to a single platform to showcase their research ideas. The selected papers are organized in topical sections on network and computing technologies; wireless networks and Internet of Things (IoT); futuristic computing technologies; communication technologies, security, and privacy. The volume will serve as a reference resource for researchers and practitioners in academia and industry.