Modulation is how a radio changes a carrier wave to represent bits. Coding adds redundant bits so the receiver can correct errors. Together they determine a link's data rate and how robust it is. The CWNA exam tests the families of spread spectrum and multicarrier techniques, the modulation types and how MCS indexes describe them.
Free account
Keep reading for free
Create a free StudyToCert account to read the rest of this lesson: 6 more sections, 5 key terms, a real-world example, an exam tip and self-check questions. Every lesson, lab and practice test is free with an account.