Chapter 8 Quiz

False

Operating systems do not have tools for recovering image files. True False

True

Steganography can be used with file formats other than image files. True False

True

The two major forms of steganography are insertion and substitution. True False

Substitution

Which data-hiding technique replaces bits of the host file with other bits of data? Pixelation Substitution Replacement Insertion

Carving

Which term refers to recovering fragments of a file? Saving Slacking Reconstructing Carving

Use a hex editor

What is the easiest way to access a file's header? User a text editor Use a hex editor User an image editor User a disk editor

Data compression

What is the process of coding data from a larger format to a smaller form? Data analysis Data encapsulation Data encryption Data compression

Examine the file's header

What should the next step be if you cannot open a graphics file with an image viewer? Examine the file's header Examine the file's extension Examine the file's size Examine the file's name

Graphics Editors

What tools are used to create, modify, and save bitmap, vector, and metafile graphics? Graphics Editors Image Viewers Image Readers Graphic Viewers

Watermarking

What type of steganography is used to protect copyrighted material? Watermarking Compression Archiving Steganalysis

Steganography

Which term refers to a data hiding technique that uses host files to cover the contents of a secret message? Steganography Steganalysis Steganos Graphite

Lossy

Which type of compression compresses data permanently by discarding bits of information in the file? Lossy Lossless Redundant Huffman

As literary works

How may computer programs be registered under copyright laws? As literary works As architectural works As motion pictures As audiovisual works

True

If a graphics file is fragmented across a disk, you must recover all the fragments before re-creating the file. True False

EXIF

In which format are most digital photographs stored? TIFF PNG GIF EXIF