# Unit 3 · Flow control and ARQ · optional practice

Subject: Computer Networks

Exam: TEE

Reader: https://deep-learning-study-room.vercel.app/cn/#tee/practice/arq

Canonical: https://deep-learning-study-room.vercel.app/read/cn/tee/practice-chapter/arq/

Optional extension · no matching calculation in the two supplied papers

1. [Supporting numerical: stop-and-wait utilization](https://deep-learning-study-room.vercel.app/read/cn/tee/practice/arq--efficiency/)
2. [Window utilization · example 1](https://deep-learning-study-room.vercel.app/read/cn/tee/practice/arq--efficiency-1/)
3. [Window utilization · example 2](https://deep-learning-study-room.vercel.app/read/cn/tee/practice/arq--efficiency-2/)
4. [Window utilization · example 3](https://deep-learning-study-room.vercel.app/read/cn/tee/practice/arq--efficiency-3/)