Practice Quiz

CompTIA Network+ Exam Review

Category - Networking

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Which of the following specifies the interval a router running IGRP waits before sending out its complete routing table to its neighbors?
  1. 5 minutes
  2. 30 seconds
  3. 90 seconds
  4. 30 minutes
Explanation
Answer - C - Routers using IGRP send routing updates every 90 seconds.

Key Takeaway: IGRP is a distance-vector routing protocol that uses bandwidth and delay as parameters instead of hop count. It has a maximum hop limit of 100 and can be configured to support a network diameter of 255. IGRP sends routing updates to its neighbors every 90 seconds. This update period of 90 seconds is beneficial compared to a 30 second period for RIP.
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