The set of bytes is the D11: Set \begin{equation} \left\{ (n_1, n_2, \ldots, n_8) : n_1, n_2, \ldots, n_8 \in \{ 0, 1 \} \right\} \end{equation}

The set of bytes is the D11: Set \begin{equation} \{ 0, 1 \}^8 \end{equation}