Which of the following are examples of CSMA channel sensing methods?

(A) 1-persistent

(B) 2-persistent

(C) p-persistent

(D) o-persistent

1. A(A), (B) and (D) Only
2. B(A), (C) and (D) Only
3. C(B), (C) and (D) Only
4. D(A), (B) and (C) Only

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: B. (A), (C) and (D) Only

Explanation

CSMA uses 1-persistent, non-persistent and p-persistent sensing (the paper's 'o-persistent' stands for non-persistent). There is no 2-persistent method.