basic functionality of a slave

[Patrick Novak]

i have a master dns running v4.9.4, and a slave running
v8.2.3.  all appears to be working between the 2, zone
transfers etc.  i can resolve any host name on the master
but can only resolve internal hosts on the slave. is this 
the way it's supposed to work? i expected the slave would
have the same functionality as the master.

in my named.conf i do not have entries for db.cache, and
0.0.127.in-addr.arpa. (the db.cache causes errors, and 
the 0.0.127... i believe shouldnt be entered on the slave -
maybe i'm wrong??) 

beyond that, all other files are
pulled in the zone transfer.
other than the "type slave" entries, the db.cache and
0.0.127.in-addr.arpa entries,  i only have:
options {
        forwarders { 1.2.3.4; };
        directory "/var/named";
            };

pretty straight-forward - any suggestions?

tia 
pjn