About Tech Zenon
Tech Zenon Interview Questions and Answers
Updated 21 Feb 2026DevOps Engineer Interview Experience
Candidate: Emily Davis
Experience Level: Senior
Applied Via: Company career fair
Difficulty: Hard
Final Result:
Interview Process
4
Questions Asked
- Explain CI/CD pipelines.
- How do you monitor system performance?
- Describe a time you automated a complex process.
- What tools do you use for container orchestration?
Advice
Gain hands-on experience with cloud platforms and automation tools.
Full Experience
The interview started with a phone screen, followed by a technical test and two rounds of in-depth technical interviews. The questions were challenging and focused on practical experience with infrastructure and automation. Feedback highlighted the need for deeper expertise in Kubernetes.
UX Designer Interview Experience
Candidate: David Kim
Experience Level: Mid-level
Applied Via: Recruiter outreach
Difficulty:
Final Result:
Interview Process
3
Questions Asked
- Walk me through your portfolio.
- How do you incorporate user feedback into designs?
- Describe a challenging design problem you solved.
Advice
Prepare a strong portfolio and be ready to discuss design decisions clearly.
Full Experience
The process included an initial screening call, a design challenge to complete at home, and a final interview with the design team. Feedback was constructive, and the team valued creativity and user-centered thinking.
Product Manager Interview Experience
Candidate: Catherine Smith
Experience Level: Entry-level
Applied Via: LinkedIn job post
Difficulty:
Final Result:
Interview Process
2
Questions Asked
- How do you prioritize features?
- Describe a time you managed a project under tight deadlines.
- What tools do you use for product management?
Advice
Focus on communication skills and understanding of product lifecycle.
Full Experience
The first round was a phone interview focusing on background and motivation. The second round was a video interview with the hiring manager and team members, emphasizing situational questions and teamwork. The interviewers were supportive and encouraging.
Data Scientist Interview Experience
Candidate: Brian Lee
Experience Level: Senior
Applied Via: Referral from a current employee
Difficulty: Hard
Final Result:
Interview Process
4
Questions Asked
- Describe a machine learning project you led.
- How do you handle missing data?
- Explain the bias-variance tradeoff.
- Write SQL queries to extract data from multiple tables.
Advice
Prepare for deep technical questions and case studies related to data analysis and machine learning.
Full Experience
The interview process was rigorous, including a take-home assignment that required building a predictive model. The onsite rounds included technical interviews and a presentation of the assignment. Despite strong technical skills, the fit with the team culture was a concern.
Software Engineer Interview Experience
Candidate: Alice Johnson
Experience Level: Mid-level
Applied Via: Online application via company website
Difficulty:
Final Result:
Interview Process
3
Questions Asked
- Explain the difference between REST and SOAP.
- Write a function to reverse a linked list.
- How do you handle merge conflicts in Git?
Advice
Brush up on data structures and algorithms, and be ready to discuss previous projects in detail.
Full Experience
The process started with an online coding test, followed by a technical phone interview focusing on problem-solving and coding skills. The final round was an in-person interview with the team, including system design questions and behavioral assessment. The interviewers were friendly and provided clear feedback.
Frequently Asked Questions in Tech Zenon
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Common Interview Questions in Tech Zenon
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: A hare and a tortoise have a race along a circle of 100 yards diameter. The tortoise goes in one directionand the hare in the other. The hare starts after the tortoise has covered 1/5 of its distance and that too leisurely.The hare and tortoise meet when the hare has covered only 1/8 of the distance. By what factor should the hareincrease its speed so as to tie the race?
Q: A rich merchant had collected many gold coins. He did not want anybody to know about them. One day his wife asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 32 times the difference between the two numbers equals the difference between the squares of the two numbers."The wife looked puzzled. Can you help the merchant's wife by finding out how many gold coins they have?
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: 9 cards are there. You have to arrange them in a 3*3 matrix. Cards are of 4 colors. They are red, yellow, blue and green. Conditions for arrangement: one red card must be in first row or second row. 2 green cards should be in 3rd column. Yellow cards must be in the 3 corners only. Two blue cards must be in the 2nd row. At least one green card in each row.
Q: Consider a pile of Diamonds on a table. A thief enters and steals 1/2 of the total quantity and then again 2 extra from the remaining. After some time a second thief enters and steals 1/2 of the remaining+2. Then 3rd thief enters and steals 1/2 of the remaining+2. Then 4th thief enters and steals 1/2 of the remaining+2. When the 5th one enters he finds 1 diamond on the table. Find out the total no. of diamonds originally on the table before the 1st thief entered.
Q: The citizens of planet nigiet are 8 fingered and have thus developed their decimal system in base 8. A certain street in nigiet contains 1000 (in base 8) buildings numbered 1 to 1000. How many 3s are used in numbering these buildings?
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: There are 3 sticks placed at right angles to each other and a sphere is placed between the sticks . Now another sphere is placed in the gap between the sticks and Larger sphere . Find the radius of smaller sphere in terms of radius of larger sphere.
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: The egg vendor calls on his first customer and sells half his eggs and half an egg. To the second customer, he sells half of what he had left and half an egg and to the third customer he sells half of what he had then left and half an egg. By the way he did not break any eggs. In the end three eggs were remaining . How many total eggs he was having ?
Q: Every day a cyclist meets a train at a particular crossing .The road is straight before the crossing and both are travelling in the same direction.Cyclist travels with a speed of 10 kmph.One day the cyclist come late by 25 minutes and meets the train 5 km before the crossing.What is the speed of the train?
Q: Tom has three boxes with fruits in his barn: one box with apples, one box with pears, and one box with both apples and pears. The boxes have labels that describe the contents, but none of these labels is on the right box. How can Tom, by taking only one p
Q: There are 7 letters A,B,C,D,E,F,GAll are assigned some numbers from 1,2 to 7.B is in the middle if arranged as per the numbers.A is greater than G same as F is less than C.G comes earlier than E.Which is the fourth letter
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: 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: 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 ?
Q: A person meets a train at a railway station coming daily at a particular time. One day he is late by 25 minutes, and he meets the train 5 k.m. before the station. If his speed is 12 kmph, what is the speed of the train.
Q: There are some chickens in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chickens and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30...
