a. What server will your local DNS server contact if it does not know the IP address of a host?

7a.) If your local DNS server does not know the host name of an IP address, it will get the address from a(n) ________.

a. Root DNS server

b. Proxy DNS server

c. Authoritative DNS server

d. None of the above

b. Does the client know that his or her local DNS server contacted another DNS server to obtain an IP address? 

7b.) If the local DNS server does not know an IP address and has to contact a remote DNS server, which DNS server will return the response to the client?

a. The local DNS server

b. The remote DNS server

c. Either A or B

d. No IP address will be returned to the client.