This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Types of Processes”. 1. A stationary stochastic process has a) Finite energy signal b) Infinite zero signal c) Zero energy signal d) None of the mentioned 2. The power spectral density function of the stochastic process is a) Real b) Odd c) … Read more
This set of tough Digital Communication Questions & Answers focuses on “Digital Communication System”. 1. Which are the common transmission media used in digital communication system? a) Coaxial cable b) Twisted copper cable c) Radio frequency bands d) All of the mentioned 2. The basic transmission-reception system is a ______ system. a) Two block system … Read more
This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Digital communication system”. 1. What are the main features of a receiver? a) Synchronization b) Multiple parallel receiver chain c) Synchronization & Multiple parallel receiver chain d) None of the mentioned 2. What conditions must be fulfilled in a good digital communication … Read more
This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Digital communication”. 1. Digital communication is _______ to environmental changes? a) Less sensitive b) More sensitive c) Does not depend d) None of the mentioned 2. Advantages of digital communication are a) Easy multiplexing b) Easy processing c) Reliable d) All of … Read more
This set of Digital Communication Interview Questions & Answers focuses on “Noise -2”. 1. Which noise is useful for dithering? a) White noise b) Pink noise c) Brown noise d) None of the mentioned 2. Capacity of a channel can be increased by a) Increasing channel bandwidth b) Increasing signal power c) Increasing channel bandwidth … Read more
This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Noise”. 1. SQNR can be improved by _______ sampling rate. a) Increasing b) Decreasing c) Does not depend d) None of the mentioned 2. Which offers better SQNR? a) Delta modulation b) PCM c) Delta modulation & PCM d) None of the … Read more
This set of Digital Communication Puzzles focuses on “Baseband System and Signal Transmission through Linear Systems”. 1. The process of data conversion along with formatting the data is called as ______ a) Formatting b) Modulation c) Source coding d) Amplifying 2. Formatting is the process which includes a) Pulse code modulation b) Sampling c) Quantization … Read more
This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Random signals”. 1. Random variables give relationship between _____ a) Two random events b) Probability of occurence of two random events c) Random event and a real number d) Random event and its probability of occurrence 2. The distribution function of random … Read more
This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Spectral Density and Autocorrelation”. 1. Power spectral density function is a? a) Real and even function b) Non negative function c) Periodic d) All of the mentioned 2. Energy spectral density defines a) Signal energy per unit area b) Signal energy per … Read more
This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Classification of Signals”. 1. What is the period of a signal x(t)? a) T b) 2T c) T/2 d) None of the mentioned 2. Which of the given signals are periodic? a) x(t) = 4 cos(5πt) b) x(t) = u(t) – 1/2 … Read more
