I have accidentally deleted the files named in the '/etc/named.conf' for my network. I am still able to server my webserver files, but my question is :

1. Where can I get replacements.
2. Do I need them - and what are they for ?

// be authoritative for the localhost forward and reverse zones, and for
// broadcast zones as per RFC 1912
zone "localhost" {
type master;
file "/etc/bind/db.local";
};
zone "127.in-addr.arpa" {
type master;
file "/etc/bind/db.127";
};