Digital Marketing Interview Questions and Answers: 60 Questions from Easy to Hard
This guide is for freshers and working marketers in India preparing for digital marketing, performance marketing, social media and paid ads roles at agencies, D2C brands, edtech and fintech startups and IT services firms. It has 60 questions with model answers in three levels: the basics every fresher is asked, the campaign problems people with one to four years handle every week, and senior questions on budgets, attribution, incrementality and automation. Every metric in the answers was calculated with a script, and all costs and rates are example figures, not market benchmarks. Answer each question aloud first, then compare, and take the mock test to practise under time.
- 60 questions, 3 levels
- Updated
- CoreHRx Jobs
- 3,088 open Marketing jobs
What digital marketing interviews cover
- Metrics you calculate on the spot: CTR, CPC, CPM, conversion rate, CPA, ROAS, CAC and LTV, often from a small table of campaign numbers.
- Paid platforms: Google Ads campaign types, match types, bidding strategies and Quality Score, and Meta ads structure, objectives, lead forms and creative testing.
- Tracking: GA4 events and key events, UTM tagging, conversion tags, and why Google Ads, Meta and GA4 never report the same number.
- Organic channels: social media, content, email and WhatsApp marketing, influencer programmes and SEO basics (SEO has its own guide and test).
- For senior roles: budget planning, break-even ROAS, attribution and incrementality tests, lead quality and automation, often with a take-home case such as a launch plan.
How to prepare (freshers and experienced)
- Freshers: run one small real campaign, for a relative's shop, a college fest or your own page, so you can describe the audience, the creative, the spend and what happened.
- Work through the free courses in Google Skillshop and Meta Blueprint, and explore the GA4 demo account so events, reports and explorations are familiar before the interview.
- Practise the metric formulas with a calculator until they are quick; almost every round has a short numbers question.
- Experienced candidates: prepare two or three campaign stories with the goal, budget, what you changed and the measured result, including one that failed and what you learned from it.
- Look up the company's live ads in the Meta Ad Library and the Google Ads Transparency Center, and bring two specific, testable ideas.
Common mistakes and interview-day tips
- Presenting vanity numbers as success. Interviewers want to know what a campaign did for leads, sales or cost per result, and how that was measured.
- Quoting a ROAS or CPA with no context. Say the margin, the attribution window and the period it refers to.
- Claiming results you cannot explain. Expect follow-up questions on how a number was tracked and what else changed at the same time.
- In numbers questions, say the formula aloud before calculating and check the base: CPM is per thousand impressions, and every rate needs a stated denominator.
- If you have not used a feature, say so and explain how you would learn it; ad platforms change every year, so curiosity and a test-and-learn habit count.
Digital Marketing interview questions: Easy questions (freshers)
20 questions1. What is digital marketing, and how is it different from traditional marketing?
Digital marketing promotes a product through online channels: search engines, social media, email, websites, apps, YouTube and messaging apps such as WhatsApp. The big differences from print, TV or hoardings are measurement and targeting. You can see how many people saw an ad, clicked, filled a form and bought, and you can show one ad to students in Indore and another to shop owners in Chennai. Budgets can start small and change daily. A good answer adds that online and offline work together: a TV campaign often lifts brand searches.
2. Explain the marketing funnel and the metric you would watch at each stage.
The funnel describes how a stranger becomes a customer. At the top, awareness, people first hear of you through reach-focused ads, videos or posts; watch reach, impressions and video views. In the middle, consideration, they compare options and visit your site; watch clicks, CTR, engaged sessions and leads. At the bottom, conversion, they buy or sign up; watch conversion rate, cost per acquisition and ROAS. Then come retention and advocacy: repeat purchases and referrals. Judging a top-of-funnel video only by its direct sales is a common mistake.
3. What are owned, earned and paid media? Give an example of each.
Owned media are channels the brand controls: its website, app, blog, email list and social pages. Earned media is attention you do not pay for directly: press coverage, customer reviews, shares and word of mouth. Paid media is bought reach: search ads, social ads and sponsored creator posts. For a Jaipur handicraft brand, the online store is owned, a travel blogger praising it unprompted is earned, and Instagram ads are paid. Paid brings speed, owned builds assets you keep, and earned brings trust; good plans use paid to grow the other two.
4. How do you calculate CTR, CPC and CPM? Work them out for this campaign.
CTR (click-through rate) is clicks divided by impressions, as a percentage: 2,400 / 80,000 = 3.0%. CPC (cost per click) is spend divided by clicks: 36,000 / 2,400 = Rs 15. CPM (cost per mille) is the cost of 1,000 impressions: 36,000 / 80,000 x 1,000 = Rs 450. CTR shows whether the ad is relevant to the people seeing it, CPC what traffic costs, and CPM what reach costs, which matters most in awareness campaigns. A common slip is forgetting the x 1,000 in CPM. The figures are assumed for practice, not benchmarks.
Search campaign: IELTS coaching, Ahmedabad (assumed figures)
Impressions Clicks Spend (Rs)
80,000 2,400 36,0005. What are conversion rate and cost per acquisition (CPA), and how do they relate to CPC?
Conversion rate is conversions divided by clicks (or by sessions, so say which): 48 enrolments from 1,200 clicks is 4.0%. CPA, cost per acquisition, is spend divided by conversions: Rs 30,000 / 48 = Rs 625. The two are linked, because CPA = CPC / conversion rate; here CPC is Rs 25, and 25 / 0.04 = Rs 625. That shows the two levers for a lower CPA: cheaper clicks or a higher conversion rate. Chasing cheap clicks on vague keywords often hurts the conversion rate more, so CPA rises. In lead generation the same idea is called CPL, cost per lead.
6. What is the difference between ROAS and ROI?
ROAS, return on ad spend, is the attributed revenue for every rupee spent on ads. ROI compares profit with cost. Say a snacks brand in Indore spends Rs 50,000 on ads and gets Rs 2,00,000 of attributed revenue: ROAS is 4.0, often written as 400%. If its gross margin is 35%, gross profit is Rs 70,000, which leaves Rs 20,000 after the ad cost, so the ROI on the ad spend is 40%. A ROAS of 4 can therefore still lose money for a low-margin product once delivery and other costs are added. Know the margin before calling any ROAS good.
7. How do SEO and SEM differ, and when would a business use each?
SEO, search engine optimisation, improves a site so it appears in the unpaid results; there is no cost per click, but results build over months and are never guaranteed. SEM, search engine marketing, is commonly used to mean paid search ads such as Google Ads, where you bid on keywords and pay when someone clicks. A new clinic in Nagpur can run search ads from day one to get calls while it writes service pages and improves its Google Business Profile for organic visits. Most businesses use both: paid for speed and keyword testing, SEO for lasting traffic.
8. What are the title tag and the meta description, and do they affect rankings?
The title tag is the page title in the HTML head. Search engines usually show it as the headline of the result, and it is an important on-page signal, so put the main topic near the start and keep it readable. The meta description is a short summary that may appear under the title. Google says it does not use the meta description for ranking, but a clear one can raise the click-through rate. Google may also rewrite either one when another text fits the query better. Write a unique title and description for every page; reusing one across fifty pages is a common mistake.
<title>Spoken English Classes in Lucknow - Weekend Batches</title>
<meta name="description" content="Small batches, a free trial
class and weekend timings near Hazratganj. Book a seat online.">9. Which campaign types does Google Ads offer, and when would you use each?
Search shows text ads for typed queries, so it catches demand that already exists. Display shows image ads on sites and apps, mostly for reach and remarketing. Video runs on YouTube. Shopping shows products with image and price from a Merchant Center feed. Performance Max (launched 2021) runs one automated campaign across Search, YouTube, Display, Gmail, Discover and Maps. Demand Gen, which replaced Discovery campaigns in 2023-24, serves visual ads mainly on YouTube, Discover and Gmail. App campaigns drive installs. Choose by goal: a Kochi tile showroom wanting calls starts with Search.
10. Explain the keyword match types in Google Ads.
Exact match, in square brackets, shows the ad for searches with the same meaning as the keyword, so [ielts coaching] covers close variants such as coaching for ielts but not ielts books. Phrase match, in quotes, matches searches that include the meaning of the keyword, such as best ielts coaching in surat. Broad match can match related searches, such as english test preparation, and works best with Smart Bidding. Broad match modifier was retired in 2021. Negative keywords block searches but do not match close variants, so add plurals and misspellings too.
Broad: ielts coaching
Phrase: "ielts coaching"
Exact: [ielts coaching]
Negative: book, books (each form added on its own)11. What is Quality Score in Google Ads?
Quality Score is a 1 to 10 rating Google shows for each keyword, as a diagnostic of how your ads compare with other advertisers on that keyword. It has three parts, each rated above average, average or below average: expected click-through rate, ad relevance (how well the ad matches the intent of the search) and landing page experience (how useful and relevant the page is). Google says the score itself is not an input to the auction; the auction uses real-time quality signals that the score summarises. Better ad quality usually wins better positions at lower cost.
12. How is a Meta ads campaign structured?
Meta Ads Manager has three levels. The campaign sets the objective; since 2022 there are six: awareness, traffic, engagement, leads, app promotion and sales. The ad set decides who sees the ads, where they appear (placements such as Facebook and Instagram feeds, Stories and Reels), the schedule, the optimisation event and usually the budget. The ad is the creative: image, video or carousel, with text and a call-to-action. With Advantage campaign budget, Meta moves the budget between ad sets. Picking traffic when you want purchases is a classic mistake: Meta then finds clickers, not buyers.
13. How would you choose social media platforms for a brand?
Start from who the customer is and what you want them to do, not from what is popular. For a Pune software firm selling to HR heads, LinkedIn is the main platform, for posts by its leaders and for lead ads. A fashion or food brand for people in their twenties leans on Instagram Reels and YouTube Shorts. Long YouTube videos suit explainers and reviews, often in Hindi or another Indian language. WhatsApp works for updates and support once people opt in. See where competitors get real engagement, pick two platforms you can post on consistently, and add more only when you can sustain them.
14. How do you calculate engagement rate, and why do two people get different numbers for the same post?
Engagement rate is engagements divided by an audience number, times 100, and the confusion is about which audience. This post has 850 engagements: likes, comments, shares and saves. By reach it is 850 / 12,500 = 6.8%; by followers it is 850 / 40,000 = 2.1%. The reach-based rate shows how compelling the post was for people who actually saw it, while the follower-based rate is easier to compare with public accounts whose reach you cannot see. Both are valid: state the formula, keep it the same in every report, and decide whether link clicks and video views count.
Instagram post (assumed figures)
Followers 40,000
Reach 12,500
Likes 610 Comments 85 Shares 42 Saves 11315. What is content marketing, and how do you plan a content calendar?
Content marketing means publishing useful material, such as blogs, videos, guides, newsletters and case studies, that answers your audience's questions so they trust you before they buy. A home loan advisory in Hyderabad might publish an EMI explainer, a document checklist and short Telugu videos on common rejection reasons. A content calendar lists, for each week, the topic, format, channel, owner, funnel stage and goal. Plan themes monthly around customer questions, launches and festivals, and turn one strong piece into several formats. Publishing with no goal per piece is the usual mistake.
16. Which email marketing metrics do you track? Calculate them for this campaign.
Delivered is sent minus bounced: 49,000, a 98% delivery rate. Open rate is unique opens over delivered: 14,700 / 49,000 = 30.0%. Click rate is unique clicks over delivered: 1,764 / 49,000 = 3.6%. Click-to-open rate is clicks over opens, 12.0%, and judges the email content itself. Unsubscribe rate is 147 / 49,000 = 0.3%. Since Apple Mail Privacy Protection (2021) preloads images, opens are inflated, so judge campaigns on clicks, conversions and revenue. Always say whether a rate uses sent or delivered as its base.
Festive offer email (assumed figures)
Sent 50,000
Bounced 1,000
Unique opens 14,700
Unique clicks 1,764
Unsubscribes 14717. What are UTM parameters? Build a tagged link for an Instagram story.
UTM parameters are tags added to a link so GA4 and other tools know where a visit came from. utm_source names the site (instagram), utm_medium the type of traffic (social), utm_campaign the campaign, and utm_content tells versions apart, such as two story designs; utm_term is mainly for paid keywords. The link is one line in real use. Use lowercase and one shared naming sheet, because GA4 treats Instagram and instagram as different values. For a paid ad, use a paid medium such as paid_social so GA4 groups it as Paid Social. Never tag links inside your own site.
https://www.example.in/diwali-sale
?utm_source=instagram
&utm_medium=social
&utm_campaign=diwali_sale_2026
&utm_content=story_kurta_v218. How does GA4 measure sessions, and what is an engaged session?
GA4 records everything as events, such as page_view, scroll and purchase, each with parameters. A session is a group of events from one user, and by default it ends after 30 minutes of inactivity. An engaged session lasts longer than 10 seconds (the default timer), or has a key event, or has at least two page or screen views. Engagement rate is engaged sessions divided by sessions, and GA4's bounce rate is the opposite: the share of sessions that were not engaged. Since March 2024 GA4 calls the actions you mark as important key events; Google Ads still calls them conversions.
19. What makes a landing page convert well?
A landing page has one job, so everything on it should support one action, such as booking a demo or buying. Match the message: the headline should repeat the promise of the ad that was clicked. Put the offer and the main button where a phone user sees them without scrolling, since in India the visitor is very often on a phone; check your own device report. Add proof such as reviews or results, keep the form short, and answer objections about price, delivery or refunds near the button. Make it fast. Sending ad traffic to the home page with ten menu links is the classic mistake.
20. What is influencer marketing, and what disclosure rules apply in India?
Influencer marketing pays or gifts creators to feature a product to their own audience. Brands often group creators as nano, micro, macro and celebrity by follower count, though the cut-offs vary from agency to agency. Smaller creators usually cost less and can have closer, local audiences, such as a Marathi food creator for a Pune restaurant. In India, the ASCI influencer guidelines (2021) require a clear, upfront label such as Ad, Sponsored or Collab on paid or gifted content, and the government's 2023 endorsement guidelines say the same. Pick creators for audience fit and real engagement.
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Digital Marketing interview questions: Medium questions (1-3 years)
20 questions21. CPC on your search campaign rose sharply this month while conversions stayed flat. How do you investigate?
First find out whether it is the market or you. Auction insights shows whether a new competitor entered or overlap rose, which is common before Diwali or admission season. Then read the impression share columns: share lost to rank points to quality or bids, share lost to budget means you are capped. Check Quality Score history for keywords whose expected CTR or landing page rating fell, the search terms report for new expensive queries, device and location splits, and the change history for edits to bid strategy or targets. Fix the cause you find instead of cutting bids everywhere.
22. How do you choose between manual CPC, Maximize conversions, target CPA and target ROAS?
It depends on the goal and on how much reliable conversion data the account has. Manual CPC gives full control and suits a new account or very low volume, but it cannot use auction-time signals such as device, location and time of day. Maximize conversions spends the budget to get as many conversions as it can, a good start once tracking works. Target CPA adds a cost goal, and target ROAS needs accurate conversion values such as order revenue. Move up only when tracking is right and volume is steady, change targets in small steps, and judge after the learning period.
23. Here is part of a search terms report for a school admissions campaign. What would you do?
Two of the four terms spent Rs 6,450 of Rs 15,450, or 41.7%, with no conversions, and their intent is wrong: people searching for a free online school or teacher jobs are not parents seeking admission. Add free and jobs as negative keywords at campaign or account level, and because negatives do not match close variants, add job and vacancy as well. Without the waste, cost per conversion would have been Rs 900 instead of Rs 1,545. The converting terms can become exact match keywords with their own ad copy. Review this report every week.
Search term Clicks Cost (Rs) Conv.
pune cbse school admission 90 5,400 6
free online school pune 140 4,200 0
school teacher jobs pune 75 2,250 0
best cbse schools in pune 60 3,600 424. How does the Google Ads auction decide your position and what you pay?
Every eligible search runs an auction. Your Ad Rank decides whether you show and where, and it depends on your bid, the quality of your ad and landing page (expected CTR, relevance, landing page experience), the Ad Rank thresholds, the context of the search such as device and location, and the expected impact of assets like sitelinks. You usually pay less than your maximum CPC: roughly the least needed to beat the Ad Rank of the advertiser just below you and to clear the thresholds. That is why better ad quality can win a higher position at a lower cost per click.
25. How do you write and test responsive search ads?
A responsive search ad takes up to 15 headlines of up to 30 characters and up to 4 descriptions of up to 90 characters, and Google combines them for each search. Write headlines that read well in any order and cover different angles: the keyword, the offer, proof, price or EMI, and a call-to-action. Pin a headline only when needed, such as a required disclaimer, because every pin reduces the combinations Google can test. Ad Strength is guidance on variety, not a direct auction input, so judge ads on conversions. New expanded text ads have not been allowed since June 2022.
26. Your Meta lead ads give cheap leads, but sales says most are junk. What do you change?
Cheap leads are often cheap because the form is too easy: one tap fills in a saved name and phone number. First, switch the form type to higher intent, which adds a review step before submitting, and add one or two qualifying multiple-choice questions, such as preferred city or budget range. Second, send quality back to Meta: connect the CRM so Meta learns which leads became qualified or bought, and optimise for conversion leads instead of all leads. Third, call new leads within minutes. Report cost per qualified lead and cost per sale, not cost per lead.
27. What is the Meta Conversions API, and how do you avoid counting one purchase twice?
The Conversions API sends events from your server straight to Meta, so a purchase is still recorded when an ad blocker or browser privacy settings stop the pixel. Most advertisers run both, which means one purchase can arrive twice. Meta removes the duplicate when the browser event and the server event have the same event name and the same event ID, so use the order ID for both, as here. Also send hashed customer details such as email or phone to improve matching. After launch, check Events Manager; a missing or different event ID is the usual cause of inflated purchase counts.
// Browser (Meta Pixel)
fbq('track', 'Purchase',
{value: 1499.00, currency: 'INR'},
{eventID: 'order_10293'});
// Server (Conversions API), same purchase
{"data": [{
"event_name": "Purchase",
"event_id": "order_10293",
"event_time": 1793520000,
"action_source": "website",
"user_data": {"em": ["SHA256_OF_EMAIL"]},
"custom_data": {"value": 1499.00, "currency": "INR"}
}]}28. Over three weeks an ad set's frequency rose and its CTR fell. What is happening, and what do you do?
Frequency is impressions divided by reach: 84,000 / 60,000 = 1.4 in week 1 and 192,000 / 64,000 = 3.0 in week 3, while CTR fell from 1.8% to 1.0%. The same people keep seeing the same ad and the audience is barely growing, which is creative fatigue. Refresh the creative with new hooks and formats, widen the audience or let Advantage+ audience expand it, and exclude recent buyers. Avoid daily big edits to a healthy ad set, because significant edits send it back into learning. Tracking frequency beside CTR and CPA every week catches fatigue early.
Weekly figures, one ad set (assumed)
Week Reach Impressions Clicks
1 60,000 84,000 1,512
3 64,000 192,000 1,92029. The store had 600 orders last month, but Meta reports 420 purchases and Google Ads 380. Why don't they match?
Each platform counts with its own rules, and their claims overlap. Meta by default credits a purchase within 7 days of an ad click or 1 day of a view, so a shopper who saw an Instagram ad and later clicked a Google ad is counted by both. Google Ads counts conversions after its own clicks and, by default, dates them to the click. Together they claim 800 purchases against 600 real orders, 133%. Use the backend order count as the truth for totals, platform numbers to optimise inside each platform, and GA4 or experiments to compare channels with each other.
30. Your GA4 traffic report shows the rows below. What went wrong, and how do you fix it?
The same paid Meta traffic is split across three rows, because UTM values are case-sensitive and different people used different labels, so nobody sees the true total of 6,250 sessions. Fix it for the future with one naming sheet, lowercase values, a link builder template and a check before each ad goes live; Meta's dynamic URL parameters can fill in campaign names automatically and cut typing errors. For past data, map the variants together with a custom channel group in GA4 or a lookup table in your reporting sheet. Then audit the tags again every month.
Session source / medium Sessions
facebook / paid 4,100
Facebook / Paid 1,250
fb / paid_social 900
google / cpc 3,80031. How do you track a lead form submission in GA4 and use it in Google Ads?
Fire an event when the form is really submitted, not when the button is clicked, ideally after the server accepts the data. GA4's recommended event for this is generate_lead, with optional value and currency; form_name here is a custom parameter, which you register as a custom dimension to see in reports. Mark generate_lead as a key event in GA4, then import it into Google Ads or use the Google Ads conversion tag directly. Test it in DebugView before launch. A common mistake is firing on a thank-you URL that also fires on every refresh, which counts one lead many times.
gtag('event', 'generate_lead', {
currency: 'INR',
value: 800,
form_name: 'site_visit_booking'
});32. Explain last-click and data-driven attribution. What changed in Google's tools in 2023?
Attribution decides which touchpoints get credit for a conversion. Last click gives all the credit to the final channel, which over-rewards brand search and retargeting and under-rewards the video or blog that started the journey. Data-driven attribution uses the account's own conversion paths to share credit by how much each touchpoint changes the chance of converting. In 2023 Google removed the first click, linear, time decay and position-based models from GA4 and Google Ads, leaving data-driven and last-click options. Any model shows patterns, not proof that an ad caused a sale.
33. An A/B test on a course landing page gave these results. Is version B the winner?
B converts at 3.9% against 3.0% for A, a 30% relative lift. A two-proportion z-test gives z of about 2.21 and a two-sided p-value of about 0.027, below the usual 0.05 cut-off, so chance alone is an unlikely explanation. Before calling it, confirm the test ran its planned length over full weeks and was not stopped early because B looked good, since peeking inflates false wins. Check that both versions got a similar share of traffic and that sign-ups turned into paying students. With only 120 and 156 sign-ups, the true lift may well be smaller than 30%.
Version Visitors Sign-ups
A 4,000 120
B 4,000 15634. Conversion rate fell from 4% to 2.5% after a landing page redesign. How do you debug it?
That is a 37.5% relative drop, so start with measurement: confirm that the form still fires the conversion event and the tags survived the redesign, because many sudden drops are broken tracking. Then split the drop by device, browser, traffic source and city; if only mobile fell, look for a hidden button, a broken layout or a slow page. Check loading time on a mid-range Android phone, form validation errors, and whether the new headline still matches the ads. Watch session recordings for confusion. If the cause is still unclear, run the old and new pages as an A/B test.
35. What are SPF, DKIM and DMARC, and why did they matter more from 2024?
They are DNS records that prove your mail really comes from your domain. SPF lists the servers allowed to send for it. DKIM adds a cryptographic signature that receivers check against a public key published in DNS. DMARC tells receivers what to do when SPF or DKIM fail or do not align with the From domain, and sends you reports. From February 2024 Gmail and Yahoo require bulk senders to have all three, offer one-click unsubscribe in marketing mail and keep spam complaints low. Start DMARC at p=none, read the reports, then move to quarantine or reject.
Host Type Value
example.in TXT v=spf1 include:_spf.mailer.example ~all
s1._domainkey.example.in TXT v=DKIM1; k=rsa; p=MIIBIjANBgkqh...
_dmarc.example.in TXT v=DMARC1; p=none; rua=mailto:dmarc@example.in36. Design an abandoned cart flow for a D2C brand using email and WhatsApp.
Trigger the flow when a known user adds to cart and has not bought within a set time, say one hour, which you then test. Message 1 reminds them of the product with a direct link back to the cart. Message 2, the next day, answers objections: delivery time, cash on delivery and the return policy. Message 3 may offer a small incentive, but only if a test shows it adds profit. Exit the flow the moment the user buys. Use WhatsApp only for users who opted in, with approved templates, since business-initiated messages outside the 24-hour window need them. Cap messages per user.
37. You ran a campaign with three creators. How do you compare them?
Judge creators on cost per order, not on reach or clicks. Ananya cost Rs 400 per order, Rohit Rs 625 and Meera Rs 320, even though Rohit had the cheapest clicks at about Rs 15.6 and Meera the costliest at Rs 40. Meera's audience converted at 12.5% of clicks against 2.5% for Rohit's, so her followers fit the product. Give every creator a unique code and a UTM link, because many people buy later without the link, and count orders from either one. Also check how many orders came from new customers, and rebook on results, not follower count.
Creator Fee (Rs) Link clicks Code orders
Ananya 60,000 3,000 150
Rohit 25,000 1,600 40
Meera 40,000 1,000 12538. How do you plan and measure organic social media for a D2C brand?
Start with the job organic social does: for most D2C brands it builds familiarity, community and trust more than direct sales. Plan content pillars, such as product use, customer stories, behind the scenes, education and festive moments, and set a posting rhythm per platform that the team can keep. Lean on short video and the formats each platform is promoting, and reply to comments and DMs quickly. Measure reach, especially non-follower reach, saves, shares, profile visits, website clicks with UTM tags and DMs that turn into orders. Review each pillar monthly and drop what does not work.
39. How do you show that content marketing works when it rarely gets the last click?
Set a goal for each piece before publishing: organic traffic for search articles, sign-ups for guides, sales support for case studies. Track organic sessions and rankings for target keywords, newsletter sign-ups and leads from content pages, and in GA4 look at conversion paths where a blog visit came earlier in the journey. Add a "How did you hear about us?" field to forms; self-reported answers catch podcasts and LinkedIn posts that tracking misses. In B2B, log content touches in the CRM and report the pipeline that read it. Page views alone will not convince a finance team.
40. Three channels show these results for a month. What is the blended CPA, and would you move budget?
Blended CPA is total spend over total purchases: Rs 7,00,000 / 980 = about Rs 714. Channel CPAs are Rs 500 for Search, Rs 750 for Meta and Rs 1,600 for YouTube. The tempting move is to shift YouTube money into Search, but these are average, platform-attributed numbers: Search may be harvesting demand that YouTube and Meta created, and more Search budget may find few extra buyers once impression share is near its limit. Move budget in steps, watch the extra cost per extra purchase at each step, and test YouTube's real effect with a geo holdout before cutting it.
Channel Spend (Rs) Purchases
Google Search 2,40,000 480
Meta 3,00,000 400
YouTube 1,60,000 100Ready to check yourself? Take the free Digital Marketing mock test
Digital Marketing interview questions: Hard questions (experienced)
20 questions41. How do you set a break-even ROAS for an Indian D2C brand with cash-on-delivery returns?
Break-even ROAS is 1 divided by the contribution margin, measured on the revenue the platform reports, which is placed orders. With 20% RTO, a placed order is worth, on average, 80% of Rs 1,200 = Rs 960 in delivered revenue, minus product cost Rs 336, shipping and fees Rs 120 and RTO cost Rs 36, which leaves Rs 468. So break-even ROAS is 1,200 / 468 = about 2.56. Ignoring RTO gives 1,200 / 630 = about 1.90, and a campaign at ROAS 2.2 would look profitable while losing money. Set targets above break-even and track RTO by campaign.
Per placed order (assumed figures)
Average order value Rs 1,200
Product and packing cost (if delivered) Rs 420
Shipping and payment fees (if delivered) Rs 150
Orders returned undelivered (RTO) 20%
Cost of each RTO (two-way shipping) Rs 18042. How do you calculate lifetime value, LTV to CAC and payback for a subscription app?
CAC is acquisition spend over new paying customers: Rs 12,00,000 / 2,000 = Rs 600. Each customer brings Rs 299 x 70% = Rs 209.30 of gross profit a month. With 8% monthly churn, the average lifetime is 1 / 0.08 = 12.5 months, so a simple LTV is 209.30 x 12.5 = about Rs 2,616, and LTV to CAC is about 4.4. Payback is 600 / 209.30 = about 2.9 months. Use gross profit, not revenue, in LTV, and the churn of recent cohorts. Constant churn is a simplifying assumption: early months usually churn faster, which lowers the real figure.
Monthly price Rs 299
Gross margin 70%
Monthly churn 8%
Marketing and sales spend Rs 12,00,000
New paying customers 2,00043. Why can average ROAS mislead you when you scale budget? Show it with numbers.
Average ROAS mixes the cheap, easy conversions with the expensive extra ones. Raising daily spend from Rs 50,000 to Rs 80,000 lowered ROAS from 5.0 to 4.25, which still looks healthy. But the extra Rs 30,000 brought only Rs 90,000 more revenue, a marginal ROAS of 3.0. If break-even ROAS is 3.2, that last slice of budget loses money even though the average is far above break-even. Scale until marginal ROAS reaches your target, not average ROAS, and change budgets in steps big enough to measure, holding everything else steady while you read the result.
Daily level Spend (Rs) Revenue (Rs) ROAS
Before 50,000 2,50,000 5.00
After 80,000 3,40,000 4.2544. How would you prove that a campaign caused sales instead of just taking credit for them?
Run an incrementality test: expose one group and hold out a comparable one. In a geo holdout, matched cities get the campaign and others do not. Control cities grew 10%, so without ads the test cities should have sold about 11,000; they sold 12,600, so about 1,600 orders were incremental. At Rs 1,500 per order and Rs 8,00,000 of spend, the incremental ROAS is 3.0, whatever the platforms claim. Choose cities that trended alike before the test, run long enough to cover the buying cycle, and do not change other marketing in one group only. Meta and Google also offer lift studies.
Group Orders before Orders during test
Test cities 10,000 12,600
Control cities 8,000 8,800
Spend Rs 8,00,000, average order Rs 1,50045. How do marketing mix modelling, attribution and experiments fit together in a measurement plan?
They answer different questions, so a mature team uses all three. Platform and GA4 attribution is fast and detailed, good for daily optimisation, but it sees only trackable clicks and views and over-credits channels close to the sale. Marketing mix modelling uses weekly sales, spend by channel, prices, seasonality and offline media to estimate each channel's contribution, including TV; it usually needs two or more years of clean data. Open-source options include Meta's Robyn and Google's Meridian. Experiments such as geo holdouts give the best causal reads and calibrate the model.
46. When would you use Performance Max, and what are its risks?
Performance Max suits advertisers with reliable conversion tracking and enough volume, such as a store with a product feed: Google's automation looks for conversions across Search, YouTube, Display and its other channels from one campaign. The risks are control and visibility: it can claim brand searches and returning buyers who would have bought anyway. Use brand exclusions if brand Search runs separately, give it strong creative and audience signals, use the new customer acquisition goal if needed, and judge it with holdout tests. Google keeps adding controls, so check current documentation.
47. A Pune real estate developer gets Google Ads leads, but sales close offline weeks later. How do you make Smart Bidding optimise for sales?
Feed the offline outcomes back into Google Ads. Capture the GCLID from the ad click in a hidden form field, store it with the lead in the CRM, and when the lead becomes a site visit or a booking, upload that stage as an offline conversion by file, schedule or CRM connector. Enhanced conversions for leads can match on hashed email or phone instead of the click ID. Give each stage a value, a site visit worth more than a form fill, and bid for value. Uploads must land within the conversion window, and sales and marketing must first agree what each stage means.
48. How would you structure a Google Ads account for a coaching brand with 12 centres in different cities?
Structure around how you need to control budget and measure results, not around every keyword. A common design is one search campaign per course or business line, with location targeting by city cluster where budgets differ, and ad groups by intent theme such as course name, near me and fees. Too many tiny campaigns spread conversion data thin and starve Smart Bidding; too few hide a city that wastes money. Keep brand search separate, use location assets so the nearest centre shows, and share negative keyword lists. Split a campaign only when budget, target or message must differ.
49. Meta keeps spending more on Reels even though Reels shows a higher CPA than Feed in the breakdown. Should you turn Reels off?
Usually not, because of what Meta calls the breakdown effect. Meta's delivery system aims for the most results at the lowest overall cost, and it looks at the cost of the next result in each placement, not the average so far. A placement with a low average CPA may already be saturated, so its next result would cost more than the next one in Reels. Removing Reels can therefore raise the ad set's total CPA. Judge the ad set on its total results and cost. If you still suspect Reels, test it properly: a split test with all placements against one without Reels.
50. Interest targeting used to work for us on Meta. Why do many advertisers now go broad, and how should you test creatives?
Apple's App Tracking Transparency (iOS 14.5, 2021) cut the data Meta gets from users who opt out, and Meta removed many detailed targeting options in 2022. Its delivery system now often finds buyers well with broad targeting, as long as it gets good conversion signals, so the creative does much of the targeting: a Tamil ad about school snacks finds Chennai parents by itself. Test creatives as distinct concepts, with different hooks, formats and messages, not small tweaks. Use Meta's A/B test tool for clean comparisons, since ads inside one ad set do not get equal spend. Keep buyer exclusions.
51. How many visitors does an A/B test need, and why should you not stop it as soon as it looks significant?
Fix the sample size before starting, from the baseline conversion rate and the smallest lift worth detecting. With a 3% baseline, a 20% relative lift (3% to 3.6%), 5% significance and 80% power, the standard formula gives about 13,900 visitors per version, so a page with 2,000 visitors a day split between two versions needs about two weeks. Smaller lifts need far more traffic. If you check daily and stop the first time p dips below 0.05, the real false-positive rate is well above 5%, because chance gets many tries. Run whole weeks, or use a method built for continuous monitoring.
52. Your growth team wants a countdown timer that resets for every visitor and a pre-ticked paid add-on at checkout. How do you respond?
I would push back on both. India's Guidelines for Prevention and Regulation of Dark Patterns, 2023, issued by the Central Consumer Protection Authority, list practices such as false urgency, basket sneaking (adding items or charges the user did not choose) and drip pricing. A timer that restarts for everyone is false urgency, and a pre-ticked paid add-on is basket sneaking. Such tricks also raise refunds, complaints and chargebacks. Offer honest alternatives to test: a real festive deadline, true stock levels, clear delivery dates and a cleaner checkout.
53. How would you design a lead scoring model with the sales team?
Score two things: fit, meaning how closely the lead matches the customer profile (role, company size, industry, city), and intent, meaning what they did (pricing page, demo request, webinar). Agree signals and points with sales, as in this sample, and set an MQL threshold, say 50. An HR head at a 300-person firm who viewed pricing and opened three emails scores 55 and goes to sales; after 30 quiet days, decay brings it to 40, back to nurture. Give opens few points, since privacy features inflate them. Each quarter, compare scores with won deals and re-weight.
Signal Points
Job title: HR head or founder +20
Company size 200+ employees +15
Visited pricing page +15
Booked a demo +40
Opened 3+ emails in 30 days +5
Personal email on a B2B form -10
No activity for 30 days -1554. Design the automation behind your lead forms so that no lead is lost and follow-up is fast.
Send every form, from Meta lead ads, Google lead form assets or the website, into one CRM through an integration or webhook, not daily CSV downloads. On arrival, remove duplicates by phone and email, record source, campaign and consent, assign by city or product in rotation, and trigger an instant WhatsApp or SMS acknowledgement plus a call task. Escalate if nobody calls in time. Log failed syncs and alert on them, because an expired token silently stops leads. Send call outcomes back to the ad platforms, and respect opt-outs, DLT rules for SMS and WhatsApp template rules.
55. Privacy changes keep weakening ad tracking. How do you keep measurement reliable?
Move from third-party cookies and browser-only pixels to consented first-party data. Ask for clear consent and record it; India's DPDP Act 2023 makes consent central, so check how its rules apply to you. Send key conversions from your server as well as the browser, for example through Meta's Conversions API and Google's enhanced conversions, which match hashed email or phone numbers. Consider server-side tagging, so cookies are set from your own domain. Expect platforms to model conversions they cannot observe, and check them against backend sales and experiments.
56. A customer's complaint about your brand is going viral on X and Instagram. What do you do in the first 24 hours?
Move fast, but get the facts first. Within the first hour, alert the agreed crisis group (social, customer support, PR, legal and the business head), pause scheduled posts and ads that would look tone-deaf, and pull up the customer's order. Reply publicly in a calm, human tone that admits the problem and moves details to a private channel, then actually solve the customer's issue. Do not delete criticism or argue. Post an update when there is real progress, give support staff the same facts, and track mention volume and sentiment. Afterwards, fix the underlying cause, not just the reply.
57. How would you run an influencer programme across 100 creators without wasting money?
Treat it as a performance channel. Select creators on audience fit and authenticity: check audience city and age data, the quality of comments and sudden follower jumps that suggest bought followers. Use contracts that cover deliverables, usage rights, exclusivity and the ASCI disclosure label. Give each creator a code and UTM link, and track cost per order and the share of new customers. Run the best creator videos as partnership ads on Meta to reach a wider, targeted audience. Measure the programme's true lift with a city holdout, rebook the top performers and drop the rest.
58. Affiliate revenue keeps growing, but total sales have not moved. What is going on, and what do you change?
Affiliates are probably taking credit for sales that would have happened anyway. Coupon and cashback sites often step in at checkout: a shopper with a full cart searches for a code, clicks an affiliate link, and the last-click cookie hands the affiliate the commission. Check the share of affiliate orders from returning customers and from coupon sites, and orders placed minutes after the click. Fixes: pay less or nothing for returning customers, give unique codes to each partner, block leaked codes, and hold some affiliates out in a test to measure incremental sales. Reward new customers.
59. How do you build a content strategy now that AI tools write content quickly and search results show AI answers?
Use AI to speed up research, outlines and drafts, but compete on what is hard to copy: first-hand experience, original data, expert views and customer examples. Google says it judges content on helpfulness, not on how it was produced, but its 2024 spam policies target scaled content abuse, meaning pages mass-produced mainly to rank. AI answers can send fewer clicks for simple queries, so also measure brand searches, mentions and leads, not only sessions. Build a few topic clusters around customer problems, update pages that already perform, and reuse each research piece across formats.
60. Plan a launch in Tier 2 cities with a target of 1,000 orders in the first month. How do you work out the budget?
Work backwards from the target with stated assumptions. 1,000 orders at a 2.5% conversion rate needs 40,000 clicks; at an assumed Rs 12 CPC that is Rs 4,80,000 of performance spend, a CPA of Rs 480. In a new city demand starts low, so add awareness, such as regional-language video on YouTube and Instagram; if awareness is a quarter of the plan, the total is Rs 6,40,000. Compare the CPA with the break-even CPA from your margins. Start in a few cities, set kill rules such as stopping when CPA stays above a limit after a set spend, and replace assumptions with week-one data.
Assumptions to test, not benchmarks
Target orders 1,000
Landing page conversion 2.5%
Average CPC Rs 12
Awareness share of budget 25%Practice questions for November 2026
New every month3 questions from the Digital Marketing mock test, the way they appear in it. A new set comes on the 1st of every month. Pick your answer, then open it.
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What does SEO (search engine optimisation) focus on?
- Sending bulk SMS offers to everyone who bought in the past year
- Earning unpaid (organic) rankings in search engine results
- Buying the top ad positions on Google Search for chosen keywords
- Paying influencers to share the website link in their stories
Show the answer
Answer: Earning unpaid (organic) rankings in search engine results. SEO improves a site so it ranks in the organic (unpaid) results: useful content, a crawlable site, good page experience and links from other sites. Buying search ad positions is SEM or paid search, a separate activity.
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What are partnership ads on Instagram (earlier called branded content ads)?
- Ads that are only shown to the creator's existing followers and to nobody else
- Free posts that Instagram itself makes for brands that pay for a verified badge
- Ads the brand runs from the creator's handle and post, with the creator's permission
- Posts the brand makes from its own account that copy a creator's style without asking
Show the answer
Answer: Ads the brand runs from the creator's handle and post, with the creator's permission. With the creator's approval, the brand puts budget behind content that shows the creator's name, so it looks like a recommendation and can be targeted to any audience. Usage terms and payment should be agreed first.
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A Pune edtech pays Rs 400 per lead, and 8% of leads enrol. What is the marketing cost per enrolment?
- Rs 3,200
- Rs 32
- Rs 2,500
- Rs 5,000
Show the answer
Answer: Rs 5,000. Cost per enrolment = cost per lead / lead-to-sale rate = Rs 400 / 8% = Rs 5,000. It takes 12.5 leads for one enrolment. Better lead quality can lower this more than a cheaper CPL.
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