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Stego Techniques Self-Test Quiz


Instructions for this self-test quiz:

  1. For each question, select the single best answer.
  2. When the quiz is graded, the correct answer will appear in the box after each question.


1. Which technique hides information by marking an image?
a.    Least significant bit insertion
b.    Discrete cosine transform
c.    Wavelet transform
d.    Digital watermarks
2. Wavelet compressions are good for which signal characteristics?
a.    smooth and periodic
b.    smooth
c.    transient
d.    transient and smooth
3. The definition of least significant bit (LSB) is
a.    The bit contributing the most value in a string of bits
b.    The bit contributing the least value in a string of bits
c.    Represented by the leftmost bit in an 8-bit binary number
d.    Represented by the rightmost bit in an 4-bit binary number
4. The binary data of the hidden message is inserted into the least significant bit of each pixel in an image because
a.    It is the most convenient bit to insert the secret data
b.    It causes the most changes to the overall image file
c.    It has the least effect on the change to the overall image file
d.    It causes no changes to the overall image file

Number of correct answers:      Percent:      Grade:   


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