About DET
DET Interview Questions and Answers
Updated 21 Feb 2026Quality Assurance Engineer Interview Experience
Candidate: Emily R.
Experience Level: Junior
Applied Via: Recruiter outreach
Difficulty: Easy
Final Result: Rejected
Interview Process
2 rounds
Questions Asked
- What testing tools have you used?
- How do you write a test case?
- Explain the difference between regression and smoke testing.
Advice
Gain hands-on experience with popular testing tools and understand testing methodologies.
Full Experience
The first round was a phone interview focusing on my knowledge of testing concepts. The second was a technical test with multiple-choice questions and a practical task. The process was straightforward but competitive.
UX Designer Interview Experience
Candidate: David S.
Experience Level: Mid-level
Applied Via: LinkedIn application
Difficulty:
Final Result:
Interview Process
3 rounds
Questions Asked
- Walk us through your design portfolio.
- How do you incorporate user feedback into your designs?
- Design a user flow for a mobile banking app.
Advice
Prepare a strong portfolio and be ready to explain your design decisions.
Full Experience
The initial screening was a phone call about my experience. The second round was a design challenge submitted beforehand. The final round was an in-person interview with the design team discussing my portfolio and approach. The team was collaborative and interested in my process.
Product Manager Interview Experience
Candidate: Catherine L.
Experience Level: Entry-level
Applied Via: Company career site
Difficulty: Easy
Final Result:
Interview Process
2 rounds
Questions Asked
- How do you prioritize features?
- Describe a time you managed a project under tight deadlines.
Advice
Show your organizational skills and ability to work cross-functionally.
Full Experience
The first round was a video interview with HR focusing on my background and motivation. The second was with the product team, discussing hypothetical product scenarios and my approach to problem-solving. The interviewers were supportive and gave clear feedback.
Data Scientist Interview Experience
Candidate: Brian K.
Experience Level: Senior
Applied Via: Employee referral
Difficulty: Hard
Final Result: Rejected
Interview Process
4 rounds
Questions Asked
- How do you handle missing data in a dataset?
- Explain the bias-variance tradeoff.
- Design an A/B test for a new feature.
- Write SQL queries to extract user engagement metrics.
Advice
Prepare for deep technical questions and case studies. Practice explaining complex concepts clearly.
Full Experience
The process started with an HR screening, followed by a technical phone interview. Then there was a case study presentation and a final cultural fit interview. The technical rounds were challenging, especially the case study which required quick thinking and clear communication.
Software Engineer Interview Experience
Candidate: Alice M.
Experience Level: Mid-level
Applied Via: Online job portal
Difficulty:
Final Result:
Interview Process
3 rounds
Questions Asked
- Explain the difference between REST and SOAP APIs.
- Write a function to reverse a linked list.
- Describe a challenging bug you fixed in a previous project.
Advice
Brush up on data structures and algorithms, and be ready to discuss your past projects in detail.
Full Experience
The first round was a phone screening focusing on my resume and basic coding questions. The second was a technical interview with coding challenges on a shared editor. The final round was with the team lead and involved system design and behavioral questions. Overall, the process was smooth and the interviewers were friendly.
Frequently Asked Questions in DET
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Common Interview Questions in DET
Q: A man has a wolf, a goat, and a cabbage. He must cross a river with the two animals and the cabbage. There is a small rowing-boat, in which he can take only one thing with him at a time. If, however, the wolf and the goat are left alone, the wolf will eat the goat. If the goat and the cabbage are left alone, the goat will eat the cabbage. How can the man get across the river with the two animals and the cabbage?
Q: Suppose a newly-born pair of rabbits, one male, one female, are put in a field. Rabbits are able to mate at the age of one month so that at the end of its second month a female can produce another pair of rabbits. Suppose that our rabbits never die and that the female always produces one new pair (one male, one female) every month from the second month on.
Q: There are two balls touching each other circumferencically. The radius of the big ball is 4 times the diameter of the small all. The outer small ball rotates in anticlockwise direction circumferencically over the bigger one at the rate of 16 rev/sec. The bigger wheel also rotates anticlockwise at N rev/sec. What is 'N' for the horizontal line from the centre of small wheel always is horizontal.
Q: 36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the res...
Q: A light bulb is hanging in a room. Outside of the room there are three switches, of which only one is connected to the lamp. In the starting situation, all switches are 'off' and the bulb is not lit. If it is allowed to check in the room only once.How would you know which is the switch?
Q: ABCDE are sisters. Each of them gives 4 gifts and each receives 4 gifts No two sisters give the same combination ( e.g. if A gives 4 gifts to B then no other sisters can give four to other one.)Â (i) B gives four to A.(ii) C gives 3 to E. How much did A,B,C,E give to D?
Q: At 6?o a clock ticks 6 times.The time between first and last ticks is 30 seconds.How long does it tick at 12?o clock?2.A hotel has 10 storey. Which floor is above the floor below the floor, below the floor above the floor, below the floor above the fifth.
Q: There is a room with a door (closed) and three light bulbs. Outside the room there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can't change them. Identify each switch with its bulb.
Q: A long, long time ago, two Egyptian camel drivers were fighting for the hand of the daughter of the sheik of Abbudzjabbu. The sheik, who liked neither of these men to become the future husband of his daughter, came up with a clever plan: a race would dete
Q: A vessel is full of liquid. From the vessel, 1/3rd of the liquid evaporates on the first day. On the second day 3/4th of the remaining liquid evaporates. What fraction of the volume is present at the end of the second day
Q: Jarius and Kylar are playing the game. If Jarius wins, then he wins twice as many games as Kylar. If Jarius loses, then Kylar wins as the same number of games that Jarius wins. How many do Jarius and Kylar play before this match?
Q: Raj has a jewel chest containing Rings, Pins and Ear-rings. The chest contains 26 pieces. Raj has 2 and 1/2 times as many rings as pins, and the number of pairs of earrings is 4 less than the number of rings. How many earrings does Raj have?...
Q: If I walk with 30 miles/hr i reach 1 hour before and if i walk with 20 miles/hr i reach 1 hour late. Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which it walks.
Q: There are four dogs/ants/people at four corners of a square of unit distance. At the same instant all of them start running with unit speed towards the person on their clockwise direction and will always run towards that target. How long does it take for them to meet and where?
Q: Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P)....
Q: Consider a series in which 8 teams are participating. each team plays twice with all other teams. 4 of them will go to the semi final. How many matches should a team win, so that it will ensure that it will go to semi finals.?
Q: Jack and his wife went to a party where four other married couples were present. Every person shook hands with everyone he or she was not acquainted with. When the handshaking was over, Jack asked everyone, including his own wife, how many hands they shook?
Q: In a country where everyone wants a boy, each family continues having babies till they have a boy. After some time, what is the proportion of boys to girls in the country? (Assuming probability of having a boy or a girl is the same)
Q: An escalator is descending at constant speed. A walks down and takes 50 steps to reach the bottom. B runs down and takes 90 steps in the same time as A takes 10 steps. How many steps are visible when the escalator is not operating.Â
Q: A Man is sitting in the last coach of train could not find a seat, so he starts walking to the front coach ,he walks for 5 min and reaches front coach. Not finding a seat he walks back to last coach and when he reaches there,train had completed 5 miles. what is the speed of the train ?
