A DNS response is classified as______ if the information comes from a cache memory.
authoritative
Un authoritative
Iterative
Recursive
In______ resolution the client is in direct contact with at most one server.
A recursive
An iterative
A cache
All of the above
In______resolution the client could directly contact more than one server.
A recursive
An iterative
A cache
All of the above
What is the maximum length of the query name sub field?
4 bytes
63 bytes
32 bytes
None
In a address to name resolution the_____ domain is used.
inverse
reverse
generic
country
How the life time of a name-to-address resolution in cache memory controlled?
by the time-to-live field set by the server
by the time-to-live counter set by the server
by the time-in-live field set by the authoritative server
by the time-to-live counter set by the server & by the time-in-live field set by the authoritative server
In the string 219.46.123.107 in-addr .arpa what is the network address of the host we are looking for?
219.46.123.0
107.123.0.0
107.123.46.0
107.0.0.0
A host with the domain name ‘pit.arc.nasa.gov’ is on the______ level of the DNS hierarchical tree( the root is level one)
third
fourth
fifth
Not enough information
A host with the domain name ‘trinity.blue.vers” is on the_____ level of the DNS hierarchical tree( the root is level one)
third
fourth
fifth
Not enough information
A DNS Server gets its data from another DNS server?
Primary
Secondary
Root
All of the above