Question

Which of the following is a place where steganography can hide data?

Option 1: Image.
Option 2: PDF Document.
Option 3: Text File.
Option 4: Video.

Answer 1

Steganography can hide data in various types of files, such as images, PDF documents, text files, and videos.

Step-by-step explanation:

Steganography is the practice of hiding data within other data. It can be used to hide information in various types of files, including images, PDF documents, text files, and videos.

In images, steganography works by subtly modifying the pixel values to embed the hidden data. In PDF documents and text files, steganography can involve hiding information within the text itself or manipulating the document structure. In videos, steganography can hide data within the frames or audio tracks.

Answer 2

Steganography can be used to hide data in various types of files, including images (Option 1), PDF documents (option 2), text files (Option 3), and videos (Option 4).

Step-by-step explanation:

The student is asking about places where steganography can be used to hide data. Steganography is a method used to conceal information within another file, message, image, or video. All of the options presented (Image, PDF Document, Text File, Video) can be used as carriers for steganographic purposes. To provide an answer to the question:

• Image: Data can be concealed within the pixels in an image file using various techniques such as least significant bit (LSB) insertion.
• PDF Document: Steganography can be applied to PDFs by hiding data within the document's structure, annotations, or even within the metadata.
• Text File: Although less common, steganography can be employed in text files by manipulating spaces, tabs, or other invisible characters to encode data.
• Video: Similar to images, videos can contain hidden data within their frames or even within the audio tracks accompanying the video.

All of these methods can effectively conceal information from the casual observer, making them suitable media for steganography.

Thus, the correct answer is Options 1, 2, 3, and 4,