Exam CISA topic 1 question 144 discussion

This is question asking for availibility issue of the E-comm business so the correct answer should be A. Not C which is for integrity of the communication data.

In an e-commerce environment, the risk of communication failure is best minimized by using functional or message acknowledgments because: They confirm receipt of messages between systems, ensuring that data was successfully transmitted and received. If an acknowledgment is not received, the sender can retry sending or take corrective actions, minimizing the risk of lost or incomplete communication. This mechanism is essential for reliable, end-to-end communication, especially in transactional environments like e-commerce. Why not the others? A. Alternative or diverse routing ➤ Helps improve network availability but does not guarantee message receipt or confirmation. B. Compression software to minimize transmission duration ➤ Improves efficiency but doesn’t address communication failure or message loss. D. A packet filtering firewall to reroute messages ➤ Firewalls control traffic flow for security, not for rerouting or guaranteeing delivery.

When the question in an *E-Commerce* environment is about the *BEST*, then “C. functional or message acknowledgments.” Is superimposed option. Option A. should subsequently be managed on lower network layer in case retry after a NOK an the application layer.

Answer: A

While other options (alternative or diverse routing, compression software, and packet filtering firewall) play important roles in network management and security, functional acknowledgments directly address the risk of communication failure by ensuring successful message delivery and reducing the chances of data loss .

The answer is A. C is a control based on the upper protocol layer, which is useful when there is noise on the communication line, but not when the link is down.

C. functional or message acknowledgments.

A. alternative or diverse routing.

Functional or message acknowledgments are a method used to ensure the successful and reliable delivery of messages in an e-commerce environment. When two systems or parties communicate with each other, the receiving party sends an acknowledgment back to the sending party to confirm that the message was received and processed successfully. By using functional or message acknowledgments, the sender can have assurance that the message reached its intended destination and was successfully processed. In case of any communication failure or error, the sender can be notified and take appropriate actions to rectify the issue or resend the message.

C. functional or message acknowledgments.