Which of the following are types of flow control?

A. Buffering
B. Cut-through
C. Windowing
D. Congestion avoidance
E. Load balancing

Answer: A, C, D

Explanation:

Data transmission flow control occurs at layer 4 with the help of buffering, windowing
and congestion avoidance.

Reference: CCNA Cisco Certified Network Associate Study Guide, 5th Edition, Todd
Lammle, chapter 1, page 17.