20 compression standard interview questions and answers

1. What is file compression? Why is it necessary to compress files? - Compression Standard 2.What is lossless source coding? - Compression Standard 3.Explain instantaneous variable length codes. - Compression Standard 4.What is ‘unique decipherability’? - Compression Standard 5.Define basic concepts of Information theory. - Compression Standard 6.What are non-binary Hoffman Codes? - Compression Standard 7.What are the parameters that are used in silence compression? - Compression Standard 8.What is rate distortion theory? - Compression Standard 9.What are the three techniques used for lossless compression? - Compression Standard 10.Explain Sub Band Coding and Wavelet Based Compression - Compression Standard 11.What is Vector Quantization? Name the taxonomy of compression techniques. - Compression Standard 12.What is meant by companded quantization? - Compression Standard 13.What is a composite source model? What are prefix codes? - Compression Standard 14.What is meant by optimum prefix codes? - Compression Standard 15.What do you mean by forward adaptive quantization? - Compression Standard 16.What is Digram – Coding? - Compression Standard 17.What is offset in LZ77 approach? - Compression Standard 18.What is meant by progressive transmission? Define lossless channel. - Compression Standard 19.Define vocoders and what are the types channel vocoders. - Compression Standard 20.Give any two characteristics of a code. Name the two types of adaptive quantization. - Compression Standard Write your comment - Share Knowledge and Experience