3G network consists of the followings Network Elements…a.RNCb.HSSc.P-GWd.S-GW

The 3G network consists of several network elements, but not all of the ones you listed are part of it. Here's a breakdown:

a. RNC (Radio Network Controller): Yes, this is a major component of the 3G network. It is responsible for controlling the Node Bs that are connected to it.

b. HSS (Home Subscriber Server): No, this is not part of the 3G network. It is a component of the 4G (LTE) network. In 3G, a similar function is performed by the HLR (Home Location Register).

c. P-GW (Packet Gateway): No, this is not part of the 3G network. It is a component of the 4G (LTE) network. In 3G, a similar function is performed by the GGSN (Gateway GPRS Support Node).

d. S-GW (Serving Gateway): No, this is not part of the 3G network. It is a component of the 4G (LTE) network. In 3G, a similar function is performed by the SGSN (Serving GPRS Support Node).

So, in summary, only the RNC is a network element in the 3G network from the options you provided.