What determines the encryption type for a PPP based tunnel?

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Multiple Choice

What determines the encryption type for a PPP based tunnel?

Explanation:
PPP encryption is negotiated between the two ends when the tunnel is established. Each side advertises the encryption strengths it supports (for example, MPPE 40-bit or 128-bit). The tunnel ends up using the strongest option that both sides also support. This mutual determination—choosing the highest common encryption capability—explains why the correct choice is that the encryption type is set by the highest match between client and server. The other options imply manual selection or a fixed default, which isn’t how PPP encryption is resolved in practice during tunnel setup.

PPP encryption is negotiated between the two ends when the tunnel is established. Each side advertises the encryption strengths it supports (for example, MPPE 40-bit or 128-bit). The tunnel ends up using the strongest option that both sides also support. This mutual determination—choosing the highest common encryption capability—explains why the correct choice is that the encryption type is set by the highest match between client and server. The other options imply manual selection or a fixed default, which isn’t how PPP encryption is resolved in practice during tunnel setup.

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