CCNP Route Practice Questions

IS-IS (Intermediate System in OSI) Questions

Home     Previous     Next

Q4. OSPF uses DR (Designated Router) to flood the media with Hello packets. IS-IS also uses similar concept to flood the media with Hello packets. Which of the following is analogous to DR of OSI in IS-IS environment?

A. Designated Intermediate System (DIS)

B. Authorized Intermediate System (AIS)

C. Designated Intermediate Router (DIR)

D. Authorized Intermediate Router (AIR)

Correct Answer: A


DIS (Designated Intermediate System) is the term used for the router that is elected for flooding the LAN media with Hello packets. The functions of DIS is analogous to DR (Designated Router) used in OSPF environment.

Home     Previous     Next

Disclaimer: All Simulation Exams practice tests, study guides and/or material are neither sponsored by, nor endorsed by, nor affiliated with Cisco® Systems or any other company. All trademarks are trademarks of their respective owners and duly acknowledged. CCNA, CCENT, ICND2, CCNP, CCIE are registered trade marks of Cisco®Systems. The practice tests material is a copyright of and the same is not approved or endorsed by respective certifying bodies. Thank-you for your interest in Simulation Exams. Please see read me file before you download, install, and/or use any software from For any information or questions regarding this Website, please e-mail webmaster at