Multimedia Security – MCQs — Multimedia System MCQs

1. Who is responsible for ensuring the confidentiality, integrity, and availability of multimedia content?
(A) Multimedia Engineer
(B) Information Security Officer
(C) Multimedia Security Analyst
(D) Data Scientist

2. Which security principle ensures that multimedia data is accessible only to authorized users?
(A) Availability
(B) Confidentiality
(C) Integrity
(D) Authentication

3. Which process ensures that multimedia content is not altered during transmission?
(A) Encryption
(B) Compression
(C) Integrity checking
(D) Encoding

4. Which technology is commonly used to encrypt multimedia streams?
(A) AES
(B) JPEG
(C) MPEG
(D) MP3

5. Which method is used to verify the identity of a user before granting access to multimedia resources?
(A) Watermarking
(B) Authentication
(C) Compression
(D) Hashing

6. What does DRM stand for in multimedia security?
(A) Digital Resource Management
(B) Digital Rights Management
(C) Data Rights Monitoring
(D) Digital Recording Mechanism

7. Which technique embeds hidden information into multimedia files to protect copyrights?
(A) Watermarking
(B) Encoding
(C) Compression
(D) Encryption

8. Which type of attack intercepts multimedia data during transmission?
(A) Denial of Service
(B) Man-in-the-Middle
(C) Phishing
(D) Spoofing

9. Which algorithm is widely used for digital signatures in multimedia security?
(A) RSA
(B) JPEG
(C) MPEG
(D) MP4

10. Which of the following ensures the originality of multimedia content?
(A) Digital Signature
(B) Compression
(C) Encoding
(D) Streaming

11. Which multimedia security technique hides data within images or audio without noticeable changes?
(A) Steganography
(B) Encryption
(C) Compression
(D) Encoding

12. Which of the following is a symmetric encryption method used for securing multimedia files?
(A) RSA
(B) DES
(C) SHA-256
(D) MD5

13. What is the primary purpose of hashing in multimedia security?
(A) Data encryption
(B) Data compression
(C) Data integrity verification
(D) Data hiding

14. Which multimedia security challenge occurs when users bypass DRM restrictions?
(A) Keylogging
(B) Piracy
(C) Phishing
(D) Malware

15. Which security protocol is often used for secure multimedia streaming over the internet?
(A) HTTPS
(B) FTP
(C) SMTP
(D) SNMP

16. Which technique adds copyright information directly into a video file?
(A) Video Watermarking
(B) Video Compression
(C) Video Encryption
(D) Video Encoding

17. Which cryptographic hash function is considered secure for multimedia integrity verification?
(A) MD5
(B) SHA-256
(C) DES
(D) AES

18. Which multimedia attack replaces original content with fake content to mislead users?
(A) Phishing
(B) Content Spoofing
(C) Man-in-the-Middle
(D) Denial of Service

19. Which process converts multimedia content into an unreadable format for unauthorized users?
(A) Encoding
(B) Encryption
(C) Compression
(D) Watermarking

20. Which type of watermark is invisible to human eyes but can be detected by software?
(A) Visible Watermark
(B) Invisible Watermark
(C) Semi-visible Watermark
(D) Transparent Watermark

21. Which method is used to prevent unauthorized duplication of DVDs?
(A) Region Coding
(B) Compression
(C) File Encoding
(D) Frame Dropping

22. Which technique hides secret messages inside an image file?
(A) Image Compression
(B) Image Steganography
(C) Image Encryption
(D) Image Encoding

23. Which multimedia security concept ensures that users cannot deny their actions?
(A) Confidentiality
(B) Non-repudiation
(C) Availability
(D) Authentication

24. Which type of DRM uses time-based licenses for multimedia playback?
(A) Persistent License
(B) Subscription License
(C) Rental License
(D) Free License

25. Which of the following can be used to digitally sign multimedia content?
(A) Public Key Infrastructure
(B) Symmetric Key Encryption
(C) Watermarking
(D) Compression

26. Which multimedia security mechanism uses biometric data for authentication?
(A) Username and Password
(B) Fingerprint Recognition
(C) Captcha Verification
(D) QR Code Scanning

27. Which of the following is a challenge in securing live multimedia streaming?
(A) Real-time Encryption
(B) Offline Storage
(C) Batch Processing
(D) Static Key Usage

28. Which algorithm is most commonly used for secure key exchange in multimedia security?
(A) Diffie-Hellman
(B) DES
(C) SHA-1
(D) AES

29. Which multimedia security threat involves the illegal capture and distribution of media?
(A) Piracy
(B) Phishing
(C) Spoofing
(D) Malware

30. Which term refers to the unauthorized access to copyrighted multimedia content?
(A) DRM
(B) Digital Piracy
(C) Watermarking
(D) Encryption

31. Which method allows streaming content to be accessed only through authorized applications?
(A) Token-Based Authentication
(B) Compression
(C) Encoding
(D) Caching

32. Which of the following is an advantage of watermarking in multimedia security?
(A) Increases file size
(B) Protects intellectual property
(C) Reduces bandwidth
(D) Speeds up streaming

33. Which multimedia security mechanism protects against replay attacks?
(A) Timestamping
(B) Compression
(C) Watermarking
(D) Encoding

34. Which term refers to the process of ensuring only valid users can access multimedia systems?
(A) Authorization
(B) Authentication
(C) Verification
(D) Decryption

35. Which of the following is an asymmetric encryption algorithm used for multimedia security?
(A) AES
(B) RSA
(C) DES
(D) Blowfish

36. Which protocol is used to securely transfer multimedia files over the internet?
(A) SFTP
(B) HTTP
(C) SMTP
(D) SNMP

37. Which type of attack aims to overload multimedia servers, making content unavailable?
(A) Phishing
(B) DoS Attack
(C) Spoofing
(D) Eavesdropping

38. Which multimedia security concern deals with verifying the source of content?
(A) Authentication
(B) Integrity
(C) Confidentiality
(D) Non-repudiation

39. Which method is commonly used to protect streaming video content from being downloaded?
(A) Adaptive Bitrate Streaming
(B) Encrypted Media Extensions
(C) Video Compression
(D) Video Encoding

40. Which of the following is a disadvantage of digital watermarking?
(A) Can be removed or altered
(B) Increases security
(C) Enhances ownership verification
(D) Works in the background

41. Which multimedia security mechanism adds redundant data to detect tampering?
(A) Error Detection Codes
(B) Encryption
(C) Compression
(D) Watermarking

42. Which attack involves tricking a user into revealing login credentials for multimedia services?
(A) Phishing
(B) Spoofing
(C) DoS
(D) Man-in-the-Middle

43. Which multimedia security measure prevents streaming content from being shared across devices?
(A) Device Binding
(B) Encoding
(C) Compression
(D) Watermarking

44. Which approach combines encryption and watermarking for multimedia protection?
(A) Hybrid Security Model
(B) Single Layer Security
(C) Content Encoding Model
(D) Token-Based Model

45. Which of the following is a method for detecting unauthorized changes to multimedia content?
(A) Hashing
(B) Compression
(C) Encoding
(D) Streaming

46. Which encryption standard is most recommended for high-security multimedia applications?
(A) AES-256
(B) DES
(C) SHA-1
(D) MD5

47. Which multimedia security mechanism is used in Blu-ray discs to prevent illegal copying?
(A) AACS
(B) DRM
(C) Watermarking
(D) Region Coding

48. Which method can be used to limit multimedia access to specific geographic locations?
(A) Geo-blocking
(B) Watermarking
(C) Token Authentication
(D) Encryption