How many times are Layer 3 lookups performed on a packet transiting a CRS of ASR9k router?

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answerhappygod
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How many times are Layer 3 lookups performed on a packet transiting a CRS of ASR9k router?

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How many times are Layer 3 lookups performed on a packet transiting a CRS of ASR9k router?

A. Three times: in the ingress linecard, the fabric, and the egress linecard
B. Once: in the active RP/RSP
C. Once: in the ingress linecard
D. Twice: in the ingress linecard and again in the ingress linecard
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