FIG. $5\mathrm{.}14$

Multicast using group table in V$\mathrm{.}1\mathrm{.}1.$The group table depicted in Fig. $5\mathrm{.}14$ is the one shown earlier in Fig. $5\mathrm{.}12.$ Explain why, in Fig. $5\mathrm{.}14,$ there appear three

copies of the incoming packet being forwarded out ports $3,4,$ and N$,$ respectively and what is type in a group table and what type:All mean?