Description : How do you calculate the number of bits of a body of text in ASCII? A. Number of characters * 7 B. Number of characters (including spaces) *7 C. bits in Huffman * 7 D. bits in Huffman / 7
Last Answer : B. Number of characters (including spaces) *7
Description : The basic idea behind Huffman coding is to A. compress data by using fewer bits to encode fewer frequently occuring characters B. compress data by using fewer bits to encode more ... frequently occuring characters D. expand data by using fewer bits to encode more frequently occuring characters
Last Answer : B. compress data by using fewer bits to encode more frequently occuring characters
Description : The basic idea behind Huffman coding is to a. compress data by using fewer bits to encode fewer frequently occuring characters b. compress data by using fewer bits to encode more ... frequently occuring characters d. expand data by using fewer bits to encode more frequently occuring characters
Last Answer : b. compress data by using fewer bits to encode more frequently occuring characters
Description : Average length of Extended Huffman code is upper bounded by : a. R b. R+1 c. R-1 d. R+1/n
Last Answer : d. R+1/n
Description : ASCII Code is a example of a. Prefix code b. Variable length code c. Fixed length code d. Alphanumeric code
Last Answer : c. Fixed length code
Description : Total number of nodes in the adaptive huffman tree is: A. 2n+1 B. 2n C. 2n-1 D. 2n-2
Last Answer : C. 2n-1
Description : Which formula shows how to work out the percentage a file has been compressed by? A. bits in (Huffman *7) /100 B. bits in ASCii - bits in Huffman C. difference in bits / bits in ASCII * 100
Last Answer : C. difference in bits / bits in ASCII * 100
Description : How do you move through a Huffman tree? A. 0 = right 1= left B. 1 = left 2 = right C. 0 = left 1 = right D. 0 = middle 1 = back
Last Answer : C. 0 = left 1 = right
Description : Huffman trees use the _______________ of each character to work out their encoding. A. Frequency B. Order in ASCII C. Number value
Last Answer : A. Frequency
Description : How do you move through a Huffman tree? A. 0 = right 1= left B. 1 = left 2 = right C. 0 = left 1 = right 0 = middle 1 = back
Description : A Huffman code: A = 1, B = 000, C = 001, D = 01 ,P(A) = 0.4, P(B) = 0.1, P(C) = 0.2, P(D) = 0.3 The average number of bits per letter is A. 8.0 bit B. 2.0 bit C. 1.9 bit D. 2.1 bit
Last Answer : C. 1.9 bit
Description : Huffman coding is an encoding algorithm used for A. lossless data compression B. files greater than 1 Mbit C. broadband systems D. lossy data compression
Last Answer : A. lossless data compression
Description : Extended Huffman method is used due to a. Large alphabet b. Skewed probability c. Equal probability d. Both (a) and(b)
Last Answer : b. Skewed probability
Description : The UNIX compress command is one of the earlier applications of a. LZ77 b. LZ78 c. Huffman d. LZW
Last Answer : d. LZW
Description : In Huffman encoding, both the sender and receiver must have a copy of the code a. Same b. Different c. Generate on Demand d. Both (a) and (b)
Last Answer : a. Same
Description : Compression method use for Integer type data a. Huffman b. LZ77 c. Golomb Code d. Adaptive Huffman
Last Answer : c. Golomb Code
Description : If the probability is not given which method is preferable a. Huffman b. Non Binary Huffman c. Adaptive Huffman d. Extended Huffman
Last Answer : c. Adaptive Huffman
Description : Huffman trees use the _______________ of each character to work out their encoding. a. Frequency b. Order in ASCII c. Number value d. Both (a) and (b)
Last Answer : a. Frequency
Description : A Huffman code: A = 1, B = 000, C = 001, D = 01 ,P(A) = 0.4, P(B) = 0.1, P(C) = 0.2, P(D) = 0.3 The average number of bits per letter is a. 8.0 bit b. 2.0 bit c. 1.9 bit d. 2.1 bit
Last Answer : c. 1.9 bit
Description : Huffman coding is an encoding algorithm used for a. lossless data compression b. files greater than 1 Mbit c. broadband systems d. lossy data compression
Last Answer : a. lossless data compression
Description : An alphabet consist of the letters A, B, C and D. The probability of occurrence is P(A) = 0.4, P(B) = 0.1, P(C) = 0.2 and P(D) = 0.3. The Huffman code is a. A = 01 B = 111 C = 110 D = 10 b. A = 0, B = 100, C = 101, D = 11
Last Answer : b. A = 0, B = 100, C = 101, D = 11
Description : At any given time, the output of an encoder depends on ______ a. Past input b. Present input c. Both a and b d. None of the above
Last Answer : b. Present input
Description : How many character an encoder reads and searches the dictionary to see if this input exists in the dictionary. a. 2 character b. 1 character c. 3 character d. Both (a) and (b)
Last Answer : a. 2 character
Description : A data file of 1,00,000 characters contains only the characters g-l, with the frequencies as indicated in table: using the variable-length code by Huffman codes, the file can be encoded with (A) 2,52,000 bits (B) 2,64,000 bits (C) 2,46,000 bits (D) 2,24,000 bits
Last Answer : (D) 2,24,000 bits
Description : A song is digitally recorded by an artist and saved to a file. Then, the artist runs a program that takes the file as input and produces a new file. The new file does not include any sound ... a smaller file size. D. This is a lossless transformation of data that results in a larger file size.
Last Answer : A. This is a lossy transformation of data that results in a smaller file size.
Description : A variable is A. DIM B. Console.Writeline("") C. A uniquely named storage location D. a way of holding a WHOLE number
Last Answer : C. A uniquely named storage location
Description : In an all weld tensile test, the original specimen gauge length was 50mm, and after the test the increased gauge length was 65mm, what is the elongation percentage? a) % A is 40 b) % A is 60 c) % A is 30 d) % A is 36
Last Answer : c) % A is 30
Description : When is Run Length Encoding used? A. When we want to compress patterns of data B. When we want to decompress patterns of data C. When we want to encode running videos
Last Answer : A. When we want to compress patterns of data
Description : Run length encoding is a compression method in which repeated ______ of a symbol are replaced. a. Residual b. Occurrence c. Letters d. None
Last Answer : b. Occurrence
Description : An ________is encoded and the algorithm attempts to use the next smaller context. a. One length context b. Zero context c. Escape symbol d. None
Last Answer : c. Escape symbol
Description : The distance of the pointer from the look-ahead buffer is called : a. Length b. Offset c. Triplet d. Code
Last Answer : b. Offset
Description : A programmer is writing a system that is intended to be able to store large amounts of personal data. As the programmer develops the data system, which of the following is LEAST likely to impact the ... of the information for analysis. D. The frequency of a particular item occurring in a data set.
Last Answer : D. The frequency of a particular item occurring in a data set.
Description : The process of representing a large—possibly infinite—set of values with a much smaller set is called______________. A. Linear function Quantization B. PDF. C. CDF D. Quantization
Last Answer : D. Quantization
Description : Set of L-dimensional blocks called the _______of the vector quantizer. a. Group b. Codebook c. Coding d. Index
Last Answer : b. Codebook
Description : The process of representing Infinite set of values with a much smaller set is called a. Mapping b. clustering c. Quantization d. Sampling
Last Answer : c. Quantization
Description : A source code whose average word length approaches the fundamental limit set by the entropy of a discrete memoryless source. A. Prefix code B. Huffman code C. Entropy code D. Source code
Last Answer : B. Huffman code
Description : To divide information among cells A. Wrap B. Split C. Lock D. Column
Last Answer : B. Split
Description : To change the font size in order to display more text or other data A. Border B. Shading C. Shrink to fit D. Printing area
Last Answer : A. Border
Description : To make lines of text appear on multiple lines of a cell A. Wrap B. Split C. Lock D. Column
Last Answer : D. Column
Description : A webpage is an example of an ........... electronic document A. Comp B. DTP C. On screen D. Online
Last Answer : C. On screen
Description : This document is designed to be viewed ........ on your tablet A. Comp B. DTP C. On screen D. Online
Last Answer : A. Comp
Description : A ........ is an initial document that shows where all text and graphic elements will be placed A. Comp B. DTP C. On screen D. Online
Description : What does 'WYSIWYG' stand for? A. Why you see is why you get B. When you see is when you get C. What you see is what you get D. Where you see is where you get
Last Answer : D. Where you see is where you get
Description : .............. means that a printed document will appear exactly as it does on-screen A. Layout B. Publish C. Clip art D. WYSIWYG
Last Answer : C. Clip art
Description : A particular way of coding information for storage in a computer file A. Raster graphic B. Vector graphic C. File format D. Layer
Last Answer : A. Raster graphic
Description : Data compression which guarantees that all original data can be restored exactly A. Lossless compression B. Lossy compression C. File compression D. Raster compression
Last Answer : B. Lossy compression
Description : Which of these is NOT a way to decrease image blurriness? A. Use compatible file formats B. Increase the size of thumbails C. Save images using loseless compression D. Check if raster or vector graphics work better
Last Answer : A. Use compatible file formats
Description : A program allows a user to design and publish a document using only a computer and a printer A. DTP B. PDF C. PPT D. DOC
Last Answer : A. DTP