ServiceNow CAD study plan

Map each scripting type (client script, UI policy script, business rule, script include, scheduled job) to its execution context, timing, and whether GlideRecord is available.

Distinguish before/after/async/display business rules and predict execution order for a record insert with three overlapping rules.

Write and debug five server-side business rules covering current/previous value comparisons, setValueBefore/setAbortAction behaviors, and gs.addInfoMessage versus gs.addErrorMessage.

Explain when to prefer a business rule over a client script and document three failure modes (server-only APIs on client, recursion, infinite loops).

Construct GlideRecord queries with addQuery, addEncodedQuery, addJoinQuery, OR conditions, and ordering, and translate each into the equivalent encoded query string.

Build a Script Include with a reusable class and call it from the client through GlideAjax, verifying the returned value on the form.

Implement error handling and performance hygiene: null checks on get(), setLimit on large queries, avoiding queries inside loops, and using GlideAggregate for counts.

Compare client-side GlideRecord, GlideAjax, and REST for a given requirement and justify the choice in writing.

Select appropriate field types (reference, choice, glide_list, string, integer, currency, date/time) for ten stated business requirements and defend each choice.

Model one-to-many and many-to-many relationships, including when to use a reference field versus a task-relationship or custom mapping table.

Configure choice lists, dependent fields, and dictionary overrides, then verify the resulting values render correctly on forms and lists.

Identify the core OOB tables (task, incident, cmdb_ci, sys_user, sys_user_group, sys_user_grmember) and their inheritance paths.

Apply naming conventions for tables, fields, and sys_ids, and evaluate when to extend task versus build a standalone table.

Configure dictionary attributes and indexes, and reason about which queries benefit from an index on a large table.

Demonstrate dot-walking across two reference hops in a list view and a report filter.

Load sample data and validate the model by running three aggregate reports that expose relationship gaps.

Configure form layout, form sections, views, and related lists for a multi-role form, and annotate which artifact controls each element.

Write UI policies with conditions, reverse-if-false, and scripts, then contrast them against client scripts for the same requirement.

Implement client scripts using onLoad, onChange, onSubmit, and onCellEdit, including g_form calls, addChoice/clearValue, and onSubmit return false validation.

Build list controls, filters, and a saved list view, and explain the difference between a list filter and a list collector on a form.

Assemble an update set, preview and commit it into a clean instance, and reconcile a deliberately created collision.

Compare update sets against source control and application publishing for promoting scoped apps, and list the artifacts each method does and does not carry.

Configure an inbound REST integration using a scripted REST API or REST message, and an Import Set transform for CSV data.

Write a deployment checklist covering scope, dependencies, demo data exclusion, and rollback.

Distinguish ACL types (record, field, table, processor, REST) and evaluate how the four ACL operations and condition/script fields interact to grant or deny access.

Assign roles through groups versus directly on users, and trace effective permissions for a test user with overlapping roles.

Configure scoped application security: application scope, cross-scope access, application roles, and the impact of the Private flag.

Describe the platform's core architecture components (instance, application scope, CMDB, workflow/flow, integration hub) at a level sufficient to answer design questions.

Re-drill the two heaviest domains by re-attempting every previously missed question and writing the correct rationale for each.

Take two full-length timed practice exams and log every miss by domain and by error type (knowledge gap, misread, time pressure).

Close the weakest domain identified in the logs with two targeted study blocks and a re-quiz.

Finalize a one-page personal reference sheet limited to facts you can state without looking them up.