Virtual Labs

Which technique is commonly used in steganography to embed information into images?

a: Changing the file format of the image. Explanation

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b: Modifying the most significant bits (MSBs) of image pixels. Explanation

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c: Replacing the least significant bits (LSBs) of image pixels. Explanation

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d: Applying a digital watermark to the image. Explanation

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What is a potential challenge in detecting steganographic content in images?

a: Visual inspection by human observers. Explanation

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b: Analysis of the image's histogram. Explanation

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c: Statistical analysis of pixel values. Explanation

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d: Applying compression techniques to the image. Explanation

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In digital steganography, what is a 'carrier'?

a: The method used to encrypt the hidden data. Explanation

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b: The algorithm for compressing the steganographic message. Explanation

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c: The digital media that conceals the hidden information. Explanation

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d: A cryptographic key used for decrypting the hidden data. Explanation

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Which transformation is typically applied to convert an image into the frequency domain for distortion steganography?

a: Fourier Transform (FT) Explanation

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b: Wavelet Transform (WT) Explanation

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c: Discrete Cosine Transform (DCT) Explanation

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d: Run-Length Encoding (RLE) Explanation

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What is the main advantage of using distortion steganography over simple LSB techniques?

a: It completely hides the data without modifying the carrier. Explanation

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b: It allows the use of audio instead of images. Explanation

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c: It modifies the frequency domain, making detection more difficult. Explanation

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d: It makes the image larger, which increases security. Explanation

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Why is the inverse Discrete Cosine Transform (IDCT) applied after embedding data in distortion steganography?

a: To increase the size of the image for more data storage. Explanation

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b: To convert the image back to a format viewable by users. Explanation

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c: To encrypt the hidden message before saving. Explanation

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d: To change the image format to a stego-specific format. Explanation

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Distortion Steganography