The UNIX compress command is one of the earlier applications of a. LZ77 b. LZ78 c. Huffman d. LZW

The UNIX compress command is one of the earlier applications of a. LZ77
b. LZ78
c. Huffman
d. LZW
by

1 Answer

Answer :

d. LZW
by

Related questions

Sliding windowing technique is used in which dictionary compression a. LZW b. LZ77 c. LZ78 d. Diagram coding

Description : Sliding windowing technique is used in which dictionary compression a. LZW b. LZ77 c. LZ78 d. Diagram coding

Last Answer : b. LZ77

A static dictionary technique that is less specific to a single application is: a. LZ77 b. Diagram Coding c. Initial dictionary d. LZW

Description : A static dictionary technique that is less specific to a single application is: a. LZ77 b. Diagram Coding c. Initial dictionary d. LZW

Last Answer : b. Diagram Coding

Compression method use for Integer type data a. Huffman b. LZ77 c. Golomb Code d. Adaptive Huffman

Description : Compression method use for Integer type data a. Huffman b. LZ77 c. Golomb Code d. Adaptive Huffman

Last Answer : c. Golomb Code

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 C. compress data by using more bits to encode more frequently occuring characters D. expand 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

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 c. compress data by using more bits to encode more frequently occuring characters d. expand 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

Total number of nodes in the adaptive huffman tree is: A. 2n+1 B. 2n C. 2n-1 D. 2n-2

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

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

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

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

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

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

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

Huffman trees use the _______________ of each character to work out their encoding. A. Frequency B. Order in ASCII C. Number value

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

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 : 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

Last Answer : C. 0 = left 1 = right

Huffman trees use the _______________ of each character to work out their encoding. A. Frequency B. Order in ASCII C. Number value

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

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

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

A Huffman encoder takes a set of characters with fixed length and produces a set of characters of A. fixed length B. constant length C. random length D. variable length

Description : A Huffman encoder takes a set of characters with fixed length and produces a set of characters of A. fixed length B. constant length C. random length D. variable length

Last Answer : D. variable length

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

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

Extended Huffman method is used due to a. Large alphabet b. Skewed probability c. Equal probability d. Both (a) and(b)

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

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)

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

If the probability is not given which method is preferable a. Huffman b. Non Binary Huffman c. Adaptive Huffman d. Extended Huffman

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

Average length of Extended Huffman code is upper bounded by : a. R b. R+1 c. R-1 d. R+1/n

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

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)

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

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

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

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

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

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

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

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

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

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

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

What are the main reasons to compress data? A. To reduce secondary storage space B. To maximise the available RAM memory C. To speed up network transmission times D. To optimise the data

Description : What are the main reasons to compress data? A. To reduce secondary storage space B. To maximise the available RAM memory C. To speed up network transmission times D. To optimise the data

Last Answer : A. To reduce secondary storage space

What is compression? A. To convert one file to another B. To reduce the size of data to save space C. To minimize the time taken for a file to be downloaded D. To compress something by pressing it very hard

Description : What is compression? A. To convert one file to another B. To reduce the size of data to save space C. To minimize the time taken for a file to be downloaded D. To compress something by pressing it very hard

Last Answer : B. To reduce the size of data to save space

What is compression? a. To convert one file to another b. To reduce the size of data to save space c. To minimize the time taken for a file to be downloaded d. To compress something by pressing it very hard

Description : What is compression? a. To convert one file to another b. To reduce the size of data to save space c. To minimize the time taken for a file to be downloaded d. To compress something by pressing it very hard

Last Answer : b. To reduce the size of data to save space

What is the use of COMPRESS option in EXP command ?

Description : What is the use of COMPRESS option in EXP command ?

Last Answer : Flag to indicate whether export should compress fragmented segments into single extents.

Unix command to show distro info?

Description : Unix command to show distro info?

Last Answer : answer:uname -a might do the trick. This is the output on my Mac. Macintosh:~ ****************$ uname -a Darwin Macintosh.local 9.2.0 Darwin Kernel Version 9.2.0: Tue Feb 5 16:13:22 PST 2008; root:xnu-1228.3.13~1/RELEASE_I386 i386

Is there a unix command to reverse the lines in a file?

Description : Is there a unix command to reverse the lines in a file?

Last Answer : answer:tac tac (cat spelled backwards) works like cat, but reverse the order of the lines (last line is written out first).

State weather the following statement is true or false for Sendmail. 1).Sendmail is a command-line tool designed for most UNIX-like operating systems. 2).It define a method of transferring mail, and acts as a client/server that supports multiple mail protocols 3). Sendmail exists in both open source and proprietary software packages. A. 1. True, 2. False, 3. true B. 1. true, 2. false, 3. false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Description : State weather the following statement is true or false for Sendmail. 1).Sendmail is a command-line tool designed for most UNIX-like operating systems. 2).It define a method of transferring mail, and acts as a client/server ... . false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Last Answer : A. 1. True, 2. False, 3. true

The Unix command: $ vi file1 file2 (A) Edits file1 and stores the contents of file1 in file2 (B) Both files i.e. file1 and file2 can be edited using ‘ex’ command to travel between files (C) Both files can be edited using the ‘mv’ command to move between the files (D) Edits file1 first, saves it and the edits file2

Description : The Unix command: $ vi file1 file2 (A) Edits file1 and stores the contents of file1 in file2 (B) Both files i.e. file1 and file2 can be edited using ex' command to travel between files (C) Both ... using the mv' command to move between the files (D) Edits file1 first, saves it and the edits file2

Last Answer : (B) Both files i.e. file1 and file2 can be edited using ‘ex’ command to travel between files

What will be the output of the following Unix command ? $rm chap0\[1 - 3\] (A) Remove file chap0[1 - 3] (B) Remove file chap01, chap02, chap03 (C) Remove file chap\[1 - 3\] (D) None of the above

Description : What will be the output of the following Unix command ? $rm chap0\[1 - 3\] (A) Remove file chap0[1 - 3] (B) Remove file chap01, chap02, chap03 (C) Remove file chap\[1 - 3\] (D) None of the above

Last Answer : (A) Remove file chap0[1 - 3]

In Unix, the command to enable execution permission for file “mylife” by all is ................ (A) Chmod ugo+X myfile (B) Chmod a+X myfile (C) Chmod +X myfile (D) All of the above

Description : In Unix, the command to enable execution permission for file “mylife” by all is ................ (A) Chmod ugo+X myfile (B) Chmod a+X myfile (C) Chmod +X myfile (D) All of the above

Last Answer : (D) All of the above

Which of the following statement is not correct with reference to cron daemon in UNIX O.S? (A) The cron daemon is the standard tool for running commands on a predetermined schedule. (B) It starts when the system boots and runs as long as the system is up. (C) Cron reads configuration files that contain list of command lines and the times at which they invoked. (D) Crontab for individual users are not stored.

Description : Which of the following statement is not correct with reference to cron daemon in UNIX O.S? (A) The cron daemon is the standard tool for running commands on a predetermined schedule. (B) It starts ... command lines and the times at which they invoked. (D) Crontab for individual users are not stored.

Last Answer : (D) Crontab for individual users are not stored.

What is the function of following UNIX command? WC – l<a >b& (A) It runs the word count program to count the number of lines in its input, a, writing the result to b, as a foreground process. (B) It runs the word count program to count the number of lines in its input, a, writing the result to b, but does it in the background. (C) It counts the errors during the execution of a process, a, and puts the result in process b. (D) It copies the ‘ l ’ numbers of lines of program from file, a, and stores in file b.

Description : What is the function of following UNIX command? WC - lb& (A) It runs the word count program to count the number of lines in its input, a, writing the result to b, as a foreground process. (B) It runs ... (D) It copies the l ' numbers of lines of program from file, a, and stores in file b.

Last Answer : (B) It runs the word count program to count the number of lines in its input, a, writing the result to b, but does it in the background.

Unix command to change the case of first three lines of file “shortlist” from lower to upper (1) $ tr ‘[a-z]’ ‘[A-Z]’ shortlist | head-3 (2) $ head-3 shortlist | tr ‘[a-z]’ ‘[A-Z]’ (3) $ tr head-3 shortlist ‘[A-Z]’ ‘[a-z]’ (4) $ tr shortlist head-3 ‘[a-z]’ ‘[A-Z]’

Description : Unix command to change the case of first three lines of file “shortlist” from lower to upper (1) $ tr ‘[a-z]’ ‘[A-Z]’ shortlist | head-3 (2) $ head-3 shortlist | tr ‘[a-z]’ ‘[A-Z]’ (3) $ tr head-3 shortlist ‘[A-Z]’ ‘[a-z]’ (4) $ tr shortlist head-3 ‘[a-z]’ ‘[A-Z]’

Last Answer : (2) $ head-3 shortlist | tr ‘[a-z]’ ‘[A-Z]’ 

Write Unix command for following: i)create a folder OSY ii) create a file FIRST in OSY folder iii) List/display all files and directories. iv) Write command to clear the screen

Description : Write Unix command for following: i)create a folder OSY ii) create a file FIRST in OSY folder iii) List/display all files and directories. iv) Write command to clear the screen

Last Answer : i) create a folder OSY: $mkdir OSY ii)create a file FIRST in OSY folder: $cd OSY $cat>FIRST or $ touch FIRST iii) List/display all files and directories: $ls iv) to clear screen: $clear

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

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

To divide information among cells A. Wrap B. Split C. Lock D. Column

Description : To divide information among cells A. Wrap B. Split C. Lock D. Column

Last Answer : B. Split

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

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

To make lines of text appear on multiple lines of a cell A. Wrap B. Split C. Lock D. Column

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

A webpage is an example of an ........... electronic document A. Comp B. DTP C. On screen D. Online

Description : A webpage is an example of an ........... electronic document A. Comp B. DTP C. On screen D. Online

Last Answer : C. On screen

This document is designed to be viewed ........ on your tablet A. Comp B. DTP C. On screen D. Online

Description : This document is designed to be viewed ........ on your tablet A. Comp B. DTP C. On screen D. Online

Last Answer : A. Comp

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 : 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

Last Answer : C. On screen

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

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

.............. means that a printed document will appear exactly as it does on-screen A. Layout B. Publish C. Clip art D. WYSIWYG

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

A particular way of coding information for storage in a computer file A. Raster graphic B. Vector graphic C. File format D. Layer

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