Which protocols are used for measuring audience viewership?

The correct answer for measuring audience viewership is Nielsen and Arbitron. These organizations utilize specialized methodologies and systems for gathering and analyzing data about television and radio audience metrics. Nielsen is well-known for television ratings, providing insights into how many people are watching certain shows at specific times, which is crucial for advertising and programming decisions. Arbitron, now part of Nielsen, focuses on radio audience measurement, providing information about listener demographics and behaviors.

The other options do not pertain to audience viewership measurement. The protocols mentioned in the first two options, AMOL-48 and AMOL-96 or AMOL-32 and AMOL-64, seem to reference technical standards or configurations that are not relevant to audience measurement. Similarly, TCP/IP and UDP protocols are fundamental to networking and data transmission over the internet but are unrelated to the assessment of viewership in media contexts. Thus, Nielsen and Arbitron stand out as the appropriate choices for measuring audience viewership.