CTA Exam Dumps : ServiceNowCertified Technical Architect (CTA)

The Identification and Reconciliation (I&R) module usesidentification rules to uniquely identify CIs. These rules help the system determine if a CI discovered or imported from a data source already exists in the CMDB or if it's a new CI.

Here's how it works:

Identification Rules:These rules define criteria for matching CIs based on their attributes (e.g., serial number, MAC address, hostname).

Matching and Reconciliation:When new data comes in, the I&R engine applies the rules to find potential matches. If a match is found, the system can either update the existing CI with new information or flag it as a potential duplicate for review.

Why not the other options?

A:While the I&R engine can facilitate merging duplicates, it doesn't automatically merge them without human review and approval.

C:Data source validation is important, but it's not the primary function of the I&R engine in duplicate reduction.

D:Assigning unique identifiers is a function of the CMDB itself, not specifically the I&R engine.

The most common and recommended way to create new CI classes in ServiceNow is byextending existing classes. This leverages the existing data structure and relationships within the CMDB.

Here's why this approach is preferred:

Inheritance:Extending a class allows the new class to inherit attributes and relationships from the parent class, ensuring consistency and reducing redundancy.

Data Model Integrity:It helps maintain the integrity of the CMDB data model by building upon the established CSDM framework.

Customization:Extending classes provides flexibility to add specific attributes and relationships that are unique to the new CI class.

Why not the other options?

A:While importing data can populate the CMDB, it's not the primary method for creating new CI classes and their relationships.

B:ServiceNow does not offer predefined templates for creating new CI classes.

C:IntegrationHub ETL is a powerful tool for data integration, but it's primarily used for data transformation and loading, not for creating new CI classes.

A 5-stack instance structure (dev, QA, UAT, staging, production) provides several advantages:

A. Staging instance for troubleshooting: The staging instance closely mirrors the production environment, allowing for thorough testing and troubleshooting of changes before they are deployed to production.

C. Deployment testing: Each instance serves a specific testing purpose (QA for functional testing, UAT for user acceptance testing), ensuring comprehensive validation before production deployment.

D. Increased parallel activity: Different teams can work simultaneously in their respective instances, increasing development and testing efficiency.

Why not the other options?

B. Lower maintenance effort: A 5-stack structure can actually increase maintenance effort due to the need to manage multiple instances.

E. Single Dev track: A 5-stack structure typically supports multiple development tracks or branches.