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Refer to the exhibit. PC50 has been recently integrated into the network. When the network administrator tests connectivity from Router _R1to PC50 the first PING results in an 80% of success rate. The next tests results in a 100% of success rate and so on. What is the cause of this 20% failure in the first test?

The Router _R1 had to resolve the PC50s Hardware Address.

The router _R1 had to translate the IP address of PC50 using NAT.

Router _R1 lookup into the routing table results in a delay.

The network is congested, resulting in some packets to be dropped.

Explanation

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