Technical Interview Questions

Pathworks P. - "I would begin by asking the following clarifying questions: Are there any special use cases such as VIP Penthouse access, restricted floors etc? Do we need to consider safety requirements or other technical constraints such as maximum load/capacity? If the lobby for the entire hotel located on the ground floor? Can we assume that the majority of the guest amenities are located near the lobby and lower floors? Can we assume that the passenger controls on the floors are purely directional"See full answer

Kk - "Clarifying Questions : By reducing bandwidth , do you mean reducing the total size of video transfer reduction ? Ans Yes Is it ok to reduce the resolution by reducing the bandwidth : Ans May be yes and no Any app in particular you are looking forward which could help talking from its standpoint : Ans : Youtube Assumptions : Youtube has a compression algorithm which can still be made better with the evolution of technologies Solutions ( prioritised list ) Improve the compressio"See full answer

Kai W. - "The user awakes Alexa by saying the "Alexa word" Device starts recording audio from the user, and streaming it to the Alexa Cloud Service The recorded audio stream is sent to the ASR (Automatic Speech Recognition) system ASR returns the words and the order of the words in the audio stream, and sends this information to NLU (Natural Language Understanding) NLU returns the intent of the audio stream, and sends it to Alexa Skill If the intent triggers a "play" directive (e.g. turn"See full answer

James H. - "I broke the vehicles down by regions in the world. Designed a wireless api interface to sync with a database backend that linked to google maps through another service and api."See full answer

Stephen C. - "While helpful, this answer relies heavily on knowledge that you likely don't know in the actual interview! Instead, I would recommend thinking through a bit more of some of the factors you'll need to solve for, and then going from there. For instance, I could imagine thinking through: Latency Bandwidth (e.g. what is the expectation here? what kinds of data are getting sent?) Power consumption Reliability Hardware constraints (especially being on the moon) Thus, you can break down the"See full answer

Bini T. - "I understand this is more focused on ML. However, I have a system question. If users allow us to access their location, or they send location via text box, could we use CDNs for the search without hitting our database? We only query the database when we have zero information on location. Other questions: does embedding always guarantee information on location? Do we discharge the user images after we return a prediction? I heard the feedback that we should keep it for future learning. What would"See full answer

Darpan D. - "Clarifying and assumption When we say financial security, are we talking about authentication, fraud detection or money laundering? Assumption: Fraud detection. Focusing specifically on transaction-level fraud. Is this an internal AI implementation or an external third-party service we provide to multiple financial businesses? Assumption: External Third-party AI financial security product. Requirements Need to detect when fraudulent transactions happen. **Detection stra"See full answer

Yash G. - " import lombok.*; import lombok.extern.slf4j.Slf4j; import org.springframework.boot.CommandLineRunner; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.stereotype.Component; import org.springframework.stereotype.Repository; import org.springframework.stereotype.Service; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java."See full answer

Rashmi T. - "It depends on how computers are distributed. Are they located within same network (behind same switch or router) or distributed across globally? Also, it depends upon if there are any security related encryption or decryption algorithms being executed. Similarly, there are so many factors involved in it. However, if a system is highly responsive then this time might be less than 1 second. For example, any google search responds in less than 1 sec. It is an interesting question and I am eager t"See full answer

Y C. - "One way to develop project metrics is around what problem the project is trying to solve within a particular timeframe, at a cost of x dollars and with y quality Scope: Did the project deliver as per the problem statement - over and beyond Resources metrics: Planned resources were utilized to contribute to the success Budget: Did the cost of the project implementation be under the budget or over? Schedule: In-flight milestones were completed on time or not as per the plan Was the proje"See full answer

Glados - "First, why are we building the system? What are the requirements we must meet - Do customers care about data being read/written from a single set of tables or multiple tables, do they care about cost allocation, do they need backups/storage to happen slow or fast, do they foresee a lot of data movement from one table to another? Based on this, there are a few options using some common design choices. Shared disk, or Shared nothing. Both have pros and cons. Based on latency, performance, and cos"See full answer

Manik K. - "Agile methodologies are chosen by organizations to enhance delivery speed, integrate shorter feedback loops, and provide incremental value to customers. However, the suitability of Agile depends on several factors, including the nature of the work, team structure, and organizational objectives. From my experience, for teams focused on new feature development, Scrum tends to be more effective. Scrum’s structured cadence—emphasizing backlog grooming, sprint planning, and regular retrospective"See full answer

Laura S. - "Clarifying questions: is this a brand new product, or are we improving an existing one? (i.e. are we going to have to migrate an existing codebase or are we starting from scratch?). are we resource-strapped (e.g. # engineers, time)? are there any specific priorities for the product, or should i leave it open-ended? Assume: brand new product, well-resourced, no specific priorities. It seems that there are two sides to this question: 1) technical evaluation of different languages, and 2)"See full answer

Catherine Z. - "Clarifying Questions Have we confirmed this was a server side issue and not client side or network related? Interviewer confirms this was a server side issue Do we have additional information on whether this was region specific, user specific? Interviewer says you can make some assumptions Introduction I am going to focus on a few potential factors and describe how they could lead to system downtime: Data Center Power Outage Software Deployment Software Bug P"See full answer

Sourabh G. - "Functional Requirement Monitor health, metrics Alert in case of failure/anomaly Visualize the live health Analyse machines on periodic basis Non Functional Should not exert load on machines low latency Highly scalable Logs/Metrics Gathering push - machine gather and send to system and low priority background thread along with batching pull - heart beat check (for offline machines) Processing Real time streaming using Kafka/kinesis + Flink TimeSeries database for stor"See full answer

Mehul K. - "Clarifying questions I asked? Are we trying to track any specific type of metric ? Like a Business Metric, Engagement Metric ? No. In general as a admin of a city at Uber what would you track ? Okay. (After collecting thoughts) Revenue from rides per day No of rides per day in the city % of drivers completing more than 10 rides/day, 5 rides/day, 1+ ride/day."See full answer

Rishabh L. - "Pizza Ordering System orderdetail - orderdetailid (PK), orderid (FK), itemid (FK), itemqty, itemized_price order - orderid (PK), customerid (FK), orderdate, locationid (FK), ordertype (DINEIN, PICKUP, DELIVERY), refid (dineinid, pickupid, deliveryid), subtotal, tax, tip, totalamount, payment_method (CASH, CARD) location - locationid (PK), locationdesc, city, state, startdate, enddate customer - customer_id (PK), name, address (nullable), phone (nullable), dob (d"See full answer