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 CCNA interview questions  CCNA Interview Questions
 CCDA interview questions  CCDA Interview Questions
Question
When a Distance Vector routing protocol detects that a connected

network has gone down, it sends out a special routing update
packet,

telling all directly connected routers that the distance to
the dead

network is infinity. This is an example of which routing
technology?

A.) ICMP.

B.) Only Link State routing protocols have this intelligence.

C.) Triggered updates.

D.) Garrison-4.

E.) Split Horizon.

F.) Poison Reverse.
 Question Submitted By :: Guest
I also faced this Question!!     Rank Answer Posted By  
 
  Re: When a Distance Vector routing protocol detects that a connected network has gone down, it sends out a special routing update packet, telling all directly connected routers that the distance to the dead network is infinity. This is an example of which routing technology? A.) ICMP. B.) Only Link State routing protocols have this intelligence. C.) Triggered updates. D.) Garrison-4. E.) Split Horizon. F.) Poison Reverse.
Answer
# 1
Answer: F

Instead of just removing the route from the routing update,
Poison

Reverse sets the distance to 'infinity' (for IP RIP this is
a hop count

of 16). This immediately makes the route invalid for all
neighboring

routers.
 
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