Quiz 7

Recovering file fragments is called ________, also known as salvaging outside North America.

Carving

_______ compression compresses data by permanently discarding bits of information in the file.

Lossy

A graphics program creates and saves one of three image files: bitmap, vector, or...

Metafile

______ is related to the density of pixels on your screen and depends on a combination of hardware and software.

Screen resolution

A ______ can identify the file format from the file header and indicate whether the file contains an image.

Steganalysis tool

______ uses a host file to cover the contents of a secret message.

Steganography

The two major forms of hiding information in a graphics file are insertion and...

Substitution

The first 3 bytes of an XIF file are the same as a ________, followed by other hexadecimal values that distinguish it from a TIF file.

TIF file

Another form of lossy compression, _______, uses complex algorithms to determine what data to discard based on vectors in the graphics file.

Vector quantization

The simplest way to access a file header is to use a(n) _______ such as WinHex.

hexadecimal editor