Cert Master

N10-009 Domain 5: Network Troubleshooting

Multicast video fails across subnets. Need?

Multiple choice — select one answer

Answer choices

  1. a. Follow change control and monitor metrics
  2. b. DNS and firewall rules for walled garden URLs
  3. c. IGMP snooping and PIM routing configured
  4. d. Advertise/install correct phase 2 selectors/static routes

Architectural breakdown & explanation

Multicast routing controls group membership across VLANs.

Correct answer(s): c. IGMP snooping and PIM routing configured

Exam domain: Domain 5: Network Troubleshooting (22% weight on the official guide).

Official documentation & study links

Practice this certification

This page is one question from the CompTIA Network+ bank. Run a full timed practice exam with domain-weighted random questions in your browser.

Start practice exam View exam overview All certifications