N10-009: CompTIA Network+ Certification Exam

Inconsistent arrival delay between RTP packets is jitter, and diagnosing it requires capturing and inspecting the actual packet stream to measure inter-arrival timing, loss, and delay — the job of a protocol analyzer such as Wireshark. A toner and probe or cable tester check physical continuity, and a spectrum analyzer detects RF interference, neither of which reveals packet-level timing behavior.