Computer Science for IGCSE & O level - Data Transmission (Section 14 - No. 38)
Which of the following statements is most accurate regarding the use of ARQ?
ARQ always improves data transmission speed.
ARQ is used solely for data compression.
ARQ is a mechanism for ensuring data reliability.
ARQ is only effective in symmetric encryption systems.
Forklaring
ARQ is designed to ensure that data is received correctly by re-transmitting data packets that are lost or corrupted during transmission.