SEM Campaign Optimization and ROI 5 — Questions and Answers
Question 1: Which metric best measures the efficiency of budget use across multiple campaigns in a portfolio?
- Portfolio ROAS or blended CPA across campaigns (Correct answer)
- Individual campaign Quality Score average
- Impression Share for the top campaign
- Click-through rate across all ad groups
Correct answer: Portfolio ROAS or blended CPA across campaigns
Portfolio-level ROAS or blended CPA aggregates performance across all campaigns, giving a true efficiency picture for total budget allocation decisions.
Question 2: What is 'budget cannibalization' in the context of SEM campaign management?
- When multiple campaigns compete for the same user queries, splitting budget inefficiently (Correct answer)
- When display campaigns consume search budget
- When branded keywords outbid non-branded ones
- When seasonal demand spikes exhaust the full-year budget early
Correct answer: When multiple campaigns compete for the same user queries, splitting budget inefficiently
Budget cannibalization happens when overlapping campaigns target similar keywords, causing internal competition that drives up CPCs and splits conversions.
Question 3: An advertiser uses attribution model 'Last Click.' Which scenario would make a switch to 'Data-Driven Attribution' most beneficial?
- Users frequently research on multiple devices and ad touchpoints before converting (Correct answer)
- The campaign has only one ad group
- The account has fewer than 50 conversions per month
- All clicks come from branded keywords
Correct answer: Users frequently research on multiple devices and ad touchpoints before converting
Data-Driven Attribution uses machine learning to assign credit across all touchpoints, providing a more accurate picture when buyers take multi-step journeys.
Question 4: A SEM manager wants to calculate true profit from a campaign. Which cost is often missing from a basic ROAS calculation?
- Cost of goods sold (COGS) (Correct answer)
- Ad platform management fees
- Creative production costs
- Landing page hosting fees
Correct answer: Cost of goods sold (COGS)
ROAS measures revenue vs. ad spend but ignores COGS, meaning a high ROAS campaign can still be unprofitable if product margins are thin.
Question 5: When using Google's Recommendation tab, what is the most important step before applying any recommendation?
- Evaluate whether the recommendation aligns with campaign goals before accepting (Correct answer)
- Accept all recommendations to maximize Optimization Score
- Dismiss all recommendations to maintain manual control
- Apply only recommendations with a high potential impact score
Correct answer: Evaluate whether the recommendation aligns with campaign goals before accepting
Recommendations are algorithmically generated but not always aligned with specific business objectives; each should be reviewed critically against campaign KPIs before applying.
Question 6: What is the benefit of running Responsive Search Ads (RSAs) with at least 15 headlines and 4 descriptions?
- Google's machine learning can test more combinations to find top-performing ad variations (Correct answer)
- It increases the ad's Quality Score directly
- It removes the need for A/B testing
- It guarantees a higher Ad Rank in every auction
Correct answer: Google's machine learning can test more combinations to find top-performing ad variations
More headlines and descriptions give Google's algorithm more combinations to test, improving the odds of matching a highly relevant message to each search query.
Question 7: A campaign with Target CPA bidding consistently hits 10% above the CPA goal. What is the recommended action?
- Gradually increase the Target CPA by 10-15% to give the algorithm more flexibility (Correct answer)
- Immediately switch to Manual CPC bidding
- Lower the daily budget to reduce spend
- Add more keywords to dilute costly conversions
Correct answer: Gradually increase the Target CPA by 10-15% to give the algorithm more flexibility
Smart bidding algorithms need headroom; if actual CPA consistently exceeds the target, raising the target slightly aligns expectations with reality while the algorithm optimizes.
SEM Campaign Optimization and ROI 5
Which metric best measures the efficiency of budget use across multiple campaigns in a portfolio?