In Junos OS, traffic is classified into three main categories:

Transit traffic:

Defined as traffic that enters one interface and exits another interface .

It is handled entirely in the forwarding plane (Packet Forwarding Engine) .

Example: User data packets moving between trust and untrust zones.

Correct → Option A .

Exception traffic:

Traffic requiring processing by the Routing Engine (control plane) , such as routing updates or management traffic.

Matches Option C/D , but that is not transit traffic.

Control traffic:

Management or routing-related, handled by the control plane.

Rate-limiting (Option B):

This applies specifically to exception traffic to protect the Routing Engine, not to transit traffic.

Correct Statement: Transit traffic is traffic that is processed solely through the forwarding plane.