Which two statements about PPP PAP are true? (Choose two)

Which two statements about PPP PAP are true? (Choose two)
A . An authenticated peer is periodically requested to re-authenticate itself during the PPP session lifetime
B . Login attempts are controlled by the node that authenticates itself
C . It is vulnerable to trial-and-error attacks
D . It can protect against playback attacks
E . In two-way authentication scenarios
F . It requires the use of the same password

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Answer: B, C