⟩ This program is valid for #include<stdio.h> #include<netinet/in.h> #include<sys/types.h> #include<sys/socket.h> int main() { int fd_client,fd, len; struct sockaddr_in add_server; fd_client = socket(AF_INET,SOCK_STREAM,0); if (fd_client == -1){ perror("fd_sock"); exit(1); } add_server.sin_family = AF_INET; add_server.sin_port = ntohs(4001); add_server.sin_addr.s_addr = inet_addr("144.29.8.2"); len = sizeof(add_server); fd = connect(fd_client,(struct sockaddr*)&add_server,len); return 0; } a) IPv4 b) IPv6 c) both (a) and (b) d) none of the mentioned
a) IPv4