Question 1
Difficulty: medium
How do you build and launch a PPC campaign from scratch when you inherit a new account with little documentation?
Sample answer
I start by getting clear on the business goal first, because a PPC account can look busy and still miss the real objective. I’d review any existing data, conversion tracking, audience performance, search term reports, landing pages, and budget pacing to understand what has already been tried. Then I’d map the account structure around intent, separating branded, non-branded, competitor, and remarketing where appropriate. I also like to validate tracking before spending heavily, since bad data leads to bad decisions. Once the foundation is set, I’d build tightly themed ad groups, write relevant ad copy, and align each ad to a dedicated landing page. I’d launch with conservative budgets, clear bid strategy, and a testing plan for ads, keywords, and audiences. In the first one to two weeks, I’d watch search terms, CTR, CPC, conversion rate, and quality signals closely, then make fast but informed adjustments based on what the data is telling me.
Question 2
Difficulty: medium
Tell me about a time you improved PPC performance. What did you change and what was the result?
Sample answer
In one role, I inherited an account with decent traffic but weak conversion rates and rising acquisition costs. The first thing I noticed was that the campaigns were built around broad keywords with very generic ad copy, so a lot of spend was going to low-intent clicks. I dug into search term data, paused poor-performing terms, and moved the best queries into tighter ad groups with more specific messaging. I also split out brand and non-brand campaigns so we could manage budgets and bids more accurately. On the landing page side, I flagged a few mismatch issues that were hurting conversion rate, especially on mobile. After those changes, CPCs became more efficient, CTR improved, and conversion rate increased meaningfully within the first month. The biggest lesson for me was that PPC improvements usually come from a combination of better targeting, stronger messaging, and a cleaner post-click experience, not just changing bids.
Question 3
Difficulty: medium
How do you decide whether to optimize for conversions, conversion value, or return on ad spend?
Sample answer
I make that decision based on the business model, the stage of the account, and the quality of the conversion data. If the business has a single important conversion event and enough volume, optimizing for conversions can be a good starting point because it gives the algorithm a clean signal. If different conversions have different values, or if revenue varies a lot by product or lead quality, then conversion value or ROAS is usually more useful. I also look at how trustworthy the tracking is. If value data is incomplete or inconsistent, I’d be cautious about using value-based bidding too early. For e-commerce, ROAS often makes sense, but I still check if it hides profitable growth opportunities in lower-priced products. For lead generation, I prefer to think beyond raw lead volume and work toward quality signals whenever possible. The main goal is to align the bidding strategy with actual business outcomes, not vanity metrics.
Question 4
Difficulty: easy
What steps do you take when a PPC campaign is getting clicks but not conversions?
Sample answer
When I see clicks without conversions, I try to avoid jumping straight to one cause. I usually break the problem into four areas: traffic quality, ad message, landing page experience, and tracking. First, I review search terms to see if we’re attracting the wrong intent. If keywords are too broad or match types are too loose, that can create wasted spend quickly. Next, I compare ad copy to the landing page to make sure the message is consistent and the value proposition is clear. Then I look at the landing page itself: load speed, mobile usability, form friction, page relevance, and trust signals. If the page is weak, even good traffic won’t convert well. Finally, I verify that tracking is firing correctly, because sometimes the conversions are happening but aren’t being recorded. I’d then prioritize changes based on likely impact, test them in a structured way, and watch whether the conversion rate and cost per conversion move in the right direction.
Question 5
Difficulty: easy
How do you use search term reports and negative keywords to improve account performance?
Sample answer
Search term reports are one of the most practical tools in PPC because they show what users actually typed, not just what we thought they might type. I review them regularly to identify both opportunities and waste. On the opportunity side, I look for high-intent queries that deserve their own keywords or ad groups because they’re converting well and may need more tailored messaging. On the waste side, I identify irrelevant or low-quality terms and add them as negative keywords to prevent repeated spend on the wrong traffic. I’m careful not to overdo negatives, though, because being too aggressive can block useful variations or reduce reach too much. I usually group negatives by theme and apply them at the campaign or account level where appropriate. Over time, this process helps improve CTR, reduce CPC waste, and make the account more focused. It also gives a clearer picture of user intent, which helps with both bidding and ad copy decisions.
Question 6
Difficulty: medium
Describe how you would manage PPC budgets across multiple campaigns with different goals.
Sample answer
I’d manage budgets by tying each campaign to a clear business priority and by understanding where marginal returns are strongest. I don’t like spreading budgets evenly just for the sake of fairness, because campaigns don’t contribute equally. Instead, I’d rank campaigns based on performance, strategic importance, and available inventory. For example, branded campaigns often protect efficient demand, while non-brand campaigns may drive growth but need more testing and tighter control. I also watch pacing closely so we don’t overspend early in the month and miss opportunities later. If a campaign is consistently capped and producing strong returns, I’d test budget increases there before cutting a lower-performing campaign that might still have strategic value. I’d also factor in seasonality, product launches, and sales cycles. For me, budget management is a continuous balancing act between efficiency and growth, with the goal of putting more money behind what is actually scaling well.
Question 7
Difficulty: hard
What do you do if a client or manager wants you to increase spend, but performance is already under pressure?
Sample answer
I’d start by aligning on the objective behind the request. Sometimes “increase spend” really means they want more revenue, more leads, or faster growth, and those are not exactly the same thing. If performance is already under pressure, I’d be honest about the trade-offs and show the data behind them. I’d explain where the current bottlenecks are, whether it’s impression share, conversion rate, or return on ad spend, and then propose a controlled growth plan rather than a broad spend increase. That might mean expanding into new keyword themes, testing new audiences, improving landing pages, or reallocating budget from weaker campaigns. If the account can support more spend efficiently, I’d recommend scaling in stages and monitoring the impact closely. If it can’t, I’d say so directly instead of forcing budget into a setup that isn’t ready. I think strong PPC work is about managing expectations as much as managing bids.
Question 8
Difficulty: hard
How do you approach A/B testing in PPC, and how do you know when a test is meaningful?
Sample answer
I approach A/B testing with a specific hypothesis instead of testing random changes. For example, I might test whether a stronger call to action improves CTR or whether a different landing page headline lifts conversion rate. I try to isolate one variable at a time so I can actually understand what caused the result. Before launching a test, I check whether the account has enough traffic and conversions to produce a reliable read. If volume is too low, I may need to run the test longer or choose a metric that moves faster, like CTR, while still keeping the main business goal in mind. I also avoid ending tests too early just because one version looks better after a few days. Statistical significance matters, but so does practical significance. A tiny lift may not be worth acting on if it adds complexity without meaningful business impact. My goal is to make testing repeatable so every experiment improves the account’s learning over time.
Question 9
Difficulty: medium
How do you tailor PPC strategy for B2B lead generation versus e-commerce?
Sample answer
The biggest difference is the sales cycle and what counts as success. In e-commerce, I’m usually looking at immediate purchase behavior, product margins, ROAS, and basket size, so the strategy is often more directly tied to revenue. In B2B lead gen, the conversion is usually just the beginning, not the finish line. That means I care a lot about lead quality, audience intent, and the downstream sales process. I’d still optimize for form fills or demo requests at the campaign level, but I’d want to connect PPC data to CRM outcomes as soon as possible so we can see which keywords and audiences create real opportunities, not just cheap leads. B2B also usually needs stronger segmentation by industry, role, or pain point, and the landing pages should speak to business problems more than product features. E-commerce can move faster, while B2B often needs more patience and better qualification. The strategy has to reflect that difference or the metrics will be misleading.
Question 10
Difficulty: easy
How do you stay organized when managing many campaigns, platforms, and deadlines at once?
Sample answer
I rely on process more than memory. When I’m managing several campaigns across platforms, I keep a clear reporting rhythm, a change log, and a prioritized task list so I always know what needs attention first. I separate urgent issues, like tracking breaks or budget pacing problems, from optimization work that can wait a day or two. I also like to use naming conventions, consistent account structure, and documentation so I’m not wasting time trying to interpret my own work later. For reporting, I focus on a few core metrics tied to the goal rather than overwhelming people with every possible data point. That helps me stay efficient and makes conversations with stakeholders more productive. I also block time for deep work, because optimization often requires real analysis instead of quick surface-level checks. In busy accounts, staying organized is not just about productivity; it’s what prevents mistakes and helps me make better decisions under pressure.
