Ham Amateur Radio Technician Practice Exam 2025 - Free Technician Practice Questions and Study Guide

When using Automatic Repeat reQuest (ARQ) mode, the system is designed to ensure reliable communication by requiring the sender to wait for an acknowledgment from the receiver before proceeding with additional transmissions. If the sender attempts to retransmit information excessively without receiving acknowledgment, it can lead to network congestion and effectively overwhelm the receiver.

In such scenarios, the communication system may respond by dropping the connection altogether to protect network resources and prevent further issues. This prevents excessive transmission attempts from continuing indefinitely, which aids in maintaining overall network efficiency and stability.

The condition where the connection is dropped is a safeguard mechanism to mitigate the potential for a complete communication breakdown and to allow both the sender and receiver to recover from the failure to exchange information effectively.