Every Book Back multiple-choice question from E-Commerce Security Systems (12th Standard Computer Applications, Samacheer Kalvi) — each with the correct option highlighted and a clear, worked explanation. Free to read in English and Tamil.
Q1
In E-Commerce, when a stolen credit card is used to make a purchase it is termed as:
- A. Friendly fraud
- B. Clean fraudCorrect
- C. Triangulation fraud
- D. Cyber squatting
Explanation. Clean fraud refers to the unauthorized use of a stolen credit card to execute transactions on e-commerce platforms.
Q2
Which of the following is not a security element involved in E-Commerce?
- A. Authenticity
- B. Confidentiality
- C. FishingCorrect
- D. Privacy
Explanation. Fishing, or phishing, is an e-commerce threat where crackers attempt to obtain sensitive user details, not a security protocol.
Q3
Asymmetric encryption uses ___________ keys for encryption and decryption.
- A. Same
- B. DifferentCorrect
- C. Positive
- D. Negative
Explanation. Asymmetric encryption algorithms, such as RSA, employ mathematically related but different keys: a public key and a private key.
Q4
The security authentication technology includes:
(i) Digital Signatures
(ii) Digital Currency
(iii) Digital Image
(iv) Digital Certificates
- A. i & ivCorrect
- B. ii & iii
- C. i, ii & iii
- D. all the above
Explanation. Authentication technologies primarily rely on digital signatures to guarantee data authenticity and digital certificates to verify the identity of the sender.
Q5
PGP stands for:
- A. Pretty Good PrivacyCorrect
- B. Pretty Good Person
- C. Private Good Privacy
- D. Private Good Person
Explanation. PGP stands for Pretty Good Privacy, which is a popular data encryption and decryption program providing cryptographic privacy and authentication.
Q6
_____ protocol is used for securing credit card transactions via the Internet.
- A. Secure Electronic Transaction (SET)Correct
- B. Credit Card Verification
- C. Symmetric Key Encryption
- D. Public Key Encryption
Explanation. Secure Electronic Transaction (SET) is a security protocol specifically designed to secure financial card transactions over open networks like the Internet.
Q7
Secure Electronic Transaction (SET) was developed in:
- A. 1999
- B. 1996Correct
- C. 1969
- D. 1997
Explanation. SET was developed in 1996 through a joint effort by major credit card companies, including Mastercard and Visa, to enhance online payment security.
Q8
The websites secured by Secure Socket Layer protocols can be identified using:
- A. html://
- B. http://
- C. htmls://
- D. https://Correct
Explanation. Websites utilizing SSL/TLS for secure, encrypted data transmissions have URLs starting with the secured protocol prefix https://.
Q9
______ is the process of converting plain text into meaningless cipher text.
- A. EncryptionCorrect
- B. Decryption
- C. Digital certificate
- D. Digital signature
Explanation. Encryption is the cryptographic process that converts readable plaintext into ciphertext using an algorithm and a cryptographic key.
Q10
Which of the following is true about Ransomware?
- A. Ransomware is not a subset of malware
- B. Ransomware deletes the file instantly
- C. Typopiracy is a form of ransomware
- D. Hackers demand ransom from the victimCorrect
Explanation. Ransomware is a malware variant that encrypts system files, with perpetrators demanding financial payments from the victim to unlock the data.
About these E-Commerce Security Systems questions
These are the Book Back multiple-choice questions for E-Commerce Security Systems from the Tamil Nadu State Board (Samacheer Kalvi) 12th Standard Computer Applications syllabus. Each question shows the correct option and an original, step-by-step explanation so you understand the method, not just the answer. Use the answer key above to jump to any question, then take the practice test to check yourself under exam-like conditions.
Frequently asked questions
How many MCQs are there in E-Commerce Security Systems?
This chapter has 10 book-back multiple-choice questions, each with the correct answer and a step-by-step explanation.
Are these 12th Standard Computer Applications MCQs free to practise online?
Yes. Every question, answer and explanation here is free, and you can also take them as a timed practice test.
Where can I find the E-Commerce Security Systems book-back answers?
The correct option for each question is highlighted on this page with a worked explanation, plus a quick answer-key summary at the top.
