SPLK-1001 Practice Question: Creating Reports, Dashboards and Visualizations
A visualization is showing unexpected spikes in a timechart. The data is aggregated by hour, but the spikes align with time zone changes. What is the likely cause?
⚠ Common exam trap
Test-takers frequently assume spikes are caused by data volume or indexing delays, rather than recognizing that time zone misalignment in event timestamps can create artificial spikes in timecharts, especially during daylight saving time transitions.
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
✓
The data contains events with different time zones
The unexpected spikes in the timechart are caused by events being timestamped with different time zones. When Splunk aggregates data by hour using `_time`, it converts all timestamps to the search head's local time zone. Events originally logged in different time zones (e.g., UTC vs. EST) will be shifted into different hour buckets, creating artificial spikes at the boundaries of time zone changes (e.g., daylight saving time transitions). This is a classic time zone misalignment issue in time-series analysis.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The data contains events with different time zones
Why this is correct
Mixed time zones cause events to be bucketed into incorrect hours, creating spikes.
- ✗
The timechart uses a gap threshold
Why it's wrong here
Gap threshold controls how to fill missing data, not spikes.
- ✗
The search uses _time instead of _indextime
Why it's wrong here
Using _time is standard; using _indextime could cause different issues but not spikes related to time zones.
- ✗
The bin span is too small
Why it's wrong here
A smaller span would increase granularity but not cause spikes related to time zones.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SPLK-1001 practice question is part of Courseiva's free Splunk certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SPLK-1001 exam.