Ecommerce & Multimedia

1. Which type of E-Commerce transaction takes place when a business sells products or services directly to another business? Ecommerce and Multimedia Quiz all chapter practice set 2. Which of the following is the primary purpose of an electronic payment system in E-Commerce? Ecommerce and Multimedia Quiz all chapter practice set 3. A customer makes a payment of Rs. 2,500 using UPI. If the transaction is successfully completed, which technology is primarily responsible for enabling the instant account-to-account electronic payment? Ecommerce and Multimedia Quiz all chapter practice set 4. In cryptography, what is the main purpose of encryption? Ecommerce and Multimedia Quiz all chapter practice set 5. Which statement correctly distinguishes symmetric and asymmetric cryptography? Ecommerce and Multimedia Quiz all chapter practice set 6. Which of the following is the primary purpose of a digital signature in an E-Commerce transaction? Ecommerce and Multimedia Quiz all chapter practice set 7. What is the main function of a Digital Certificate in secure online communication? Ecommerce and Multimedia Quiz all chapter practice set 8. Which protocol is primarily used to provide encrypted communication between a web browser and a web server? Ecommerce and Multimedia Quiz all chapter practice set 9. What is the primary purpose of Electronic Data Interchange (EDI) in E-Commerce? Ecommerce and Multimedia Quiz all chapter practice set 10. What is M-Commerce? Ecommerce and Multimedia Quiz all chapter practice set 11. An E-Commerce website receives a fake login page designed to steal customers usernames, passwords and banking information. What type of security threat is this? Ecommerce and Multimedia Quiz all chapter practice set 12. Which E-Commerce model describes a consumer selling a used product directly to another consumer through an online marketplace? Ecommerce and Multimedia Quiz all chapter practice set 13. In the B2C E-Commerce model, the seller and buyer are generally: Ecommerce and Multimedia Quiz all chapter practice set 14. Which cryptographic technique is generally more suitable for encrypting a large amount of data because of its faster processing speed? Ecommerce and Multimedia Quiz all chapter practice set 15. If a message is encrypted using a public key in an asymmetric cryptographic system, which key is normally used to decrypt it by the intended recipient? Ecommerce and Multimedia Quiz all chapter practice set 16. A digital signature is generally created using which key of the signer in public-key cryptography? Ecommerce and Multimedia Quiz all chapter practice set 17. Which organization issues or digitally signs certificates to establish trust in a Public Key Infrastructure (PKI)? Ecommerce and Multimedia Quiz all chapter practice set 18. Which security property of HTTPS ensures that information sent between a customer and an E-Commerce website cannot be easily read by an attacker intercepting the communication? Ecommerce and Multimedia Quiz all chapter practice set 19. An E-Commerce company automatically sends a purchase order from its computer system to the suppliers computer system in a standardized electronic format. Which technology is most appropriate for this purpose? Ecommerce and Multimedia Quiz all chapter practice set 20. A customer scans a QR code using a UPI-enabled mobile application and transfers Rs. 1,250 to a merchant. Which type of transaction is this primarily an example of? Ecommerce and Multimedia Quiz all chapter practice set 21. An online shopping website has 2,000 registered users. During a phishing attack, 15% of the users click the fraudulent link. How many users clicked the link? Ecommerce and Multimedia Quiz all chapter practice set 22. Which of the following is NOT considered a basic component of multimedia? Ecommerce and Multimedia Quiz all chapter practice set 23. An image has a resolution of 1920 × 1080 pixels. How many pixels are present in the image? Ecommerce and Multimedia Quiz all chapter practice set 24. What does the resolution of a digital image primarily indicate? Ecommerce and Multimedia Quiz all chapter practice set 25. Which color model is primarily used for displaying colors on electronic screens such as monitors and smartphones? Ecommerce and Multimedia Quiz all chapter practice set 26. Which statement correctly distinguishes raster and vector graphics? Ecommerce and Multimedia Quiz all chapter practice set 27. Which image format is generally associated with lossless compression and support for transparency? Ecommerce and Multimedia Quiz all chapter practice set 28. In digital signal processing, what is sampling? Ecommerce and Multimedia Quiz all chapter practice set 29. A digital audio signal is sampled at 44,100 samples per second and each sample uses 16 bits. What is the raw bit rate for a single-channel audio signal? Ecommerce and Multimedia Quiz all chapter practice set 30. Which of the following is an example of a commonly used compressed audio format? Ecommerce and Multimedia Quiz all chapter practice set 31. A video is recorded at 30 frames per second. Approximately how many individual frames are displayed during a 2-minute video? Ecommerce and Multimedia Quiz all chapter practice set 32. What is the primary function of a video codec? Ecommerce and Multimedia Quiz all chapter practice set 33. Which statement correctly describes lossy and lossless compression? Ecommerce and Multimedia Quiz all chapter practice set 34. In computer animation, what is a keyframe? Ecommerce and Multimedia Quiz all chapter practice set 35. What is the main purpose of multimedia streaming? Ecommerce and Multimedia Quiz all chapter practice set