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