CIS-Discovery

Certified Implementation Specialist — Discovery

Study Guide

What the CIS-Discovery validates

The CIS-Discovery certification validates your expertise in implementing and configuring ServiceNow's Discovery product to automatically populate the Configuration Management Database (CMDB). This certification proves you can design discovery strategies, configure MID Servers, create and maintain discovery schedules, troubleshoot failed discoveries, and ensure accurate CI data through proper identification and reconciliation rules.

This certification is essential for ServiceNow administrators, technical consultants, and implementation specialists who work with CMDB population, asset discovery, and infrastructure visibility. It qualifies you to lead Discovery implementations, design enterprise-scale discovery architectures, and troubleshoot complex discovery issues across Windows, Unix, cloud, and virtualized environments.

Career impact

The CIS-Discovery certification typically adds $8,000-$15,000 to your annual salary and opens doors to senior technical consultant roles, CMDB architect positions, and specialized Discovery consultant opportunities. It's particularly valuable for professionals working in ITOM (IT Operations Management) implementations and large enterprise ServiceNow deployments.

This certification fits perfectly after your CSA and complements other ITOM certifications like Event Management or Service Mapping. Many professionals pursue this as part of their path toward the Certified Master Architect (CMA) credential.

Exam format

  • 60 multiple-choice questions
  • 90 minutes to complete
  • Passing score: 70% (42 correct answers)
  • Delivered through Pearson VUE testing centers or online proctoring
  • Exam cost: $450
  • Must wait 10 days between retake attempts
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Prerequisites

You must hold a valid Certified System Administrator (CSA) certification before attempting the CIS-Discovery exam. Additionally, ServiceNow strongly recommends 6 months of hands-on experience with Discovery implementations, including MID Server installation, probe troubleshooting, and CMDB data management. Familiarity with network protocols, operating systems (Windows/Unix), and virtualization technologies is essential for success.

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Overview
Tasks
CMDB
API
Metrics
Monitor
Internals
Instance:sourdoughdev·Version:Yokohama
Instance StateONLINE
System StatusFully Operational
Session Timeout90 minutes
Logged-In Sessions2 (20 active)
Build Nameyokohama-12-18-2024_p1
IP Address10.159.128.43
Instance HealthHealth Score: 90%
🔥 5dSourdough (Chrome Plugin)Dark Mode

Exam Domains

MID Server Architecture and Configuration

25%

Covers MID Server installation, JVM requirements, network configuration, security, clustering, and capabilities. Heavy focus on troubleshooting MID Server connectivity and performance issues.

MID Server installation and setupJVM configuration and memory requirementsNetwork connectivity and firewall rulesMID Server capabilities and selectionClustering and load balancingSecurity certificates and encryption

Discovery Schedules and IP Range Management

20%

Focuses on creating discovery schedules, configuring IP ranges, setting discovery windows, and managing credentials for different target environments.

Discovery schedule configurationIP range setup and exclusionsCredential management and testingDiscovery windows and timingBehavior configurationSchedule prioritization and throttling

Probe and Sensor Model

20%

Tests understanding of how probes and sensors work together, the discovery flow, horizontal vs vertical discovery, and shazzam probe functionality.

Probe and sensor architectureHorizontal discovery processVertical discovery and classificationShazzam probe operationCustom probe developmentDiscovery patterns and workflows

CMDB Population and Data Management

15%

Covers how Discovery data populates the CMDB, including identification rules, reconciliation rules, and CI Class Manager configuration.

Identification rule configurationReconciliation rule setupCI Class ManagerData precedence and conflictsCMDB health and data qualityDiscovery-based CI lifecycle

Discovery Patterns and Platform Support

12%

Tests knowledge of discovery patterns for Windows, Unix, SNMP devices, VMware environments, and cloud platforms including AWS and Azure.

Windows discovery patternsUnix/Linux discovery methodsSNMP device discoveryVMware vCenter integrationCloud discovery (AWS, Azure)Database and application discovery

Troubleshooting and ECC Queue Management

8%

Focuses on troubleshooting failed discoveries using ECC Queue, log analysis, and common discovery failure scenarios and resolutions.

ECC Queue monitoringDiscovery log analysisFailed probe troubleshootingNetwork connectivity issuesCredential and authentication problemsPerformance optimization

Study Plan

Week-by-Week Study Plan

  1. Week 1: MID Server fundamentals - Install MID Server in your PDI, configure JVM settings, test network connectivity, and practice MID Server clustering. Complete Discovery Fundamentals course sections 1-3. Set up different credential types and test connectivity to various target systems.
  2. Week 2: Discovery schedules and probe/sensor model - Create multiple discovery schedules with different IP ranges and credentials. Study horizontal vs vertical discovery by running actual discoveries and examining the probe/sensor flow in ECC Queue. Practice with shazzam probes and understand the complete discovery workflow.
  3. Week 3: CMDB population and data management - Configure identification and reconciliation rules, work with CI Class Manager, and practice resolving data conflicts. Run discoveries and trace how CIs are created and updated in the CMDB. Complete hands-on labs with different CI classes and relationship mapping.
  4. Week 4: Discovery patterns and troubleshooting - Practice Windows, Unix, SNMP, and cloud discovery patterns. Set up cloud connectors for AWS/Azure if possible. Focus heavily on troubleshooting using ECC Queue, analyzing discovery logs, and resolving common failure scenarios like credential issues and network connectivity problems.
  5. Week 5: Review and practice - Take practice exams, review weak areas identified in practice tests, and do a final review of MID Server architecture (this appears in 40%+ of questions). Create discovery troubleshooting scenarios and practice using ECC Queue and logs. Review all hands-on lab work and ensure you can explain the complete discovery flow from probe initiation to CMDB population.

Study Resources

Official Course
Discovery Fundamentals (ILT or Virtual)

ServiceNow's official 3-day instructor-led course covering all aspects of Discovery implementation and configuration.

Documentation
Discovery Product Documentation

Comprehensive documentation covering MID Server setup, discovery patterns, troubleshooting guides, and configuration best practices.

Documentation
ServiceNow Developer Site - Discovery

Contains Discovery-specific tutorials, code samples, and technical deep-dives into probe and sensor development.

Community
CIS-Discovery Study Group

Active community forum with exam tips, study materials sharing, and technical discussions on Discovery challenges.

Documentation
Discovery Lab Environment Setup Guide

Step-by-step guide for setting up Discovery lab environments in your PDI including MID Server installation and target system simulation.

Video
Xplore Discovery Podcast Series

Technical podcast series covering advanced Discovery topics, real-world implementation scenarios, and expert troubleshooting techniques.

Exam Tips

1.The CIS-Discovery exam heavily tests MID Server architecture and troubleshooting — expect 20+ questions on MID Server configuration, capabilities, clustering, and connectivity issues.
2.Many questions present ECC Queue scenarios asking you to identify the root cause of discovery failures — practice reading ECC Queue output and correlating probe/sensor errors.
3.Understand the difference between horizontal and vertical discovery phases — questions often ask when specific probes fire and what triggers vertical discovery.
4.Know the exact JVM requirements and memory settings for MID Servers — several questions test specific configuration parameters and performance tuning.
5.Shazzam probe questions appear frequently — understand when it runs, what it discovers, and how it relates to other discovery patterns.
6.Identification and reconciliation rule questions often include scenarios with conflicting data — know the precedence rules and conflict resolution strategies.
7.Cloud discovery questions focus on connector configuration and credential setup — study AWS and Azure discovery patterns even if you haven't implemented them.
8.Questions about discovery schedules often test credential assignment, IP range exclusions, and behavior configuration — these are easy points if you know the UI well.
9.Troubleshooting questions frequently ask about network connectivity, firewall rules, and certificate issues — know the common failure patterns and diagnostic steps.
10.The exam includes several questions on CI Class Manager and discovery-based CI lifecycle — understand how discovery creates, updates, and manages CI records in the CMDB.

Test Your Knowledge

Quick 3-question quiz — see how your ServiceNow skills stack up.

Question 1 of 3Performance

A list view on a table with millions of records is slow. Best fix?

Select an answer to continue