Comparing the Naming Services
|
|
|
|
|
Namespace
|
Hierarchical
|
Flat
|
Hierarchical
|
Files
|
Data Storage
|
Files/resource records
|
Two-column maps
|
Directories (varied)
Indexed database
|
Text-based files
|
Servers
|
Master/slave
|
Master/slave
|
Master/replica
Multi master replica
|
None
|
Security
|
DNSSEC, varied
|
None (root or nothing)
|
Kerberos, TLS, SSL, varied
|
None
|
Transport
|
TCP/IP
|
RPC
|
TCP/IP
|
File I/O
|
Scale
|
Global
|
LAN
|
Global
|
Local host only
|
Data
|
Host
|
All
|
All
|
All
|
|
Note -
Use DNS for host or network address lookups for LDAP and files-based
naming.