Chapter 8 Quiz CIS 275

Only one file format can compress graphics files.

False

When investigating graphics files, you should convert them into one standard format.

False

A JPEG file uses which type of compression?

Lossy

When you carve a graphics file, recovering the image depends on which of the following skills?

Recognizing the pattern of the file header content

A JPEG file is an example of a vector graphic.

False

Some clues left on a drive that might indicate steganography include which of the following?

Graphics files with the same name but different file sizes Multiple copies of a graphics file Steganography programs in the suspect's All Programs list *All of the above*

Bitmap (.bmp) files use which of the following types of compression?

Lossless

What type of compression uses an algorithm that allows viewing the graphics file without losing any portion of the data?

Lossless

Which of the following is true about JPEG and TIF files?

They have different values for the first 2 bytes of their file headers.

Each type of graphics file has a unique header containing information that distinguishes it from other types of graphics files.

True

To identify an unknown graphics file format you need to examine a copy of the unknown file with a hexadecimal editor to find the hex code for the first several bytes of the file.

True

When viewing a file header, you need to include hexadecimal information to view the image.

True

In JPEG files, what's the starting offset position for the JFIF label?

offset 6