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Assume the configuration below:

A ---------------- B --------------- C

where A-B has an MTU of 1500 bytes and B-C has an MTU of 400 bytes.

Assume that link layer frames require 30 bytes of overhead, an IP header is 20 bytes, there is no loss in the network, and A always tries to send full frames to C.

For every 1000 bytes of IP data (not including the IP header) that A sends, how many bytes must B send to C (including link layer and IP header overhead)?

  1. 1050 bytes

  2. 1133 bytes

  3. 1135 bytes

  4. 1450 bytes

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