SNOW-CSA Database Administration and CMDB Practice Question
Which three are components of CMDB Reconciliation? (Select three.)
⚠ Common exam trap
Many candidates confuse CMDB Health Score (a reporting feature) with an active reconciliation component, or assume CI Class Manager is involved in reconciliation when it only handles class structure, not data matching.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Identification rules
Identification rules are a core component of CMDB Reconciliation because they define how ServiceNow uniquely identifies CIs across multiple data sources. They use specific attributes (like serial number or MAC address) to match CIs and prevent duplicates during the reconciliation process.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Identification rules
Why this is correct
Identification rules determine how CIs are matched to data sources.
- ✓
Data Source definitions
Why this is correct
Data source definitions specify which sources can provide CI data.
- ✓
Reconciliation rules
Why this is correct
Reconciliation rules define how to handle conflicts between data sources.
- ✗
CMDB Health Score
Why it's wrong here
CMDB Health Score measures data quality, not reconciliation.
- ✗
CI Class Manager
Why it's wrong here
CI Class Manager is used to define class hierarchy, not reconciliation.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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