Consider the following code

$//$ Title : sw$2$led

module sw$2$led $($sw$,$led$)$ ;

$//--------------$ Port declarations $----------//$

input $[7$:$0]sw$;

wire $7$:$0$ sw;

output $7$:$0$ led;

wire $7$:$0$ led;

$//$ Signal declarations $--------//$

wire $7$:$0$ BUS$7$;

$//$ Terminals assignment

$//----$ Input terminals $---//$

assign BUS$7[7$:$0]=$ sw$[7$:$0]$;

$//----$ Output terminals $---//$

assign led$[7$:$0]=$ BUS$7[7$:$0]$;

endmodule

$($a$)$ What is the purpose of $"//"$

$($b$)$ What is the name of this module?

$($c$)$ What are the names of the ports in this module?

$($d$)$ How many wires are in BUS $7?$