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IP Routing - Technical MCQs

Q1:

What does RIPv2 use to prevent routing loops?
  1. CIDR
  2. Split horizon
  3. Authentication
  4. Classless masking
  5. Holddown timers

A 1 and 3

B 2, 3 and 5

C 2 and 5

D 3 and 4

ANS:C - 2 and 5

RIPv2 uses the same timers and loop-avoidance schemes as RIPv1. Split horizon is used to stop an update from being sent out the same interface it was received on. Holddown timers allow time for a network to become stable in the case of a flapping link.