Google Technical Interview Questions

Surbhi G. - "Deep Learning is a part of Artificial Intelligence, it's like teaching the machine to think and make decisions on its own. It's like how we teach a child the concept of an apple - it's round, red, has a stem on top. We show them multiple pictures of apples and then they understand and can recognize an apple in future. Similarly, we feed lots of data to the machine, and slowly, it starts learning from that data, and can then make relevant predictions or decisions based on what it has learnt. A co"See full answer

Kavya C. - "MTBF is Mean time between failures. This is measured to figure out how reliable a system is by what is the gap between 2 failures. (Total time elapsed- Down time)/No of failures"See full answer

S G. - "If it's a product end to end, then there's a lot to say. If it's just a feature on top of a product then I will focus on the complexity and how I break complex tasks into small milestones to partner with XFN teams to nail it. Focus on situation, task, actions and results"See full answer

Samiksha D. - "I assume here that the elderly person does not have much knowledge about technology and the internet. I would like to structure my answer in this way: Concepts of twitter I want the elderly to know. Take an analogy to explain the concepts. Connect the dots between the analogy back to the app. Twitter concepts : A common feed to look at the tweets created by the people in your network. Concept of retweeting. Chatting. Comments/likes. Analogy : Imagine there is an office wi"See full answer

Aaron W. - "Clarification questions What is the purpose of connecting the DB? Do we expect high-volumes of traffic to hit the DB Do we have scalability or reliability concerns? Format Code -> DB Code -> Cache -> DB API -> Cache -> DB - APIs are built for a purpose and have a specified protocol (GET, POST, DELETE) to speak to the DB. APIs can also use a contract to retrieve information from a DB much faster than code. Load balanced APIs -> Cache -> DB **Aut"See full answer

Musonda C. - "Imagine you have a friend from France that speaks French, and you only speak English. You and your friend want to play a talking game. So, for your friend to understand you and for you to understand what your friend is saying you would need an API between the two of you. The api has its own language called api language. You and your friend will both get a small book that tells you how to speak api language. The api in between you and your friend would allow both of you to speak API language to"See full answer

Googlepm 1. - "To scale web applications, one must concentrate on having Shared hosting / Dedicated server CDN (for images servers) Caching techniques Database Sharding Adding/removing webservers on the fly In order to improve the speed of the web applications, certain techniques to look at : Web hosts - Shared hosting / dedicated server CDN Caching techniques Compression techniques Reduced use of plugins, check Java script / CSS files Pre-fetch : If we are aware that th"See full answer

Kanika - "https://www.freecodecamp.org/news/what-happens-when-you-hit-url-in-your-browser/"See full answer

Dileep D. - "Phishing Attack Scenario (High-Level) Attack Type: Phishing Goal: Steal user credentials Attack Vector: Fake email pretending to be a bank Target: End users Impact: Account takeover, financial loss Detection: Email filtering, user reports Prevention: User awareness training Multi-factor authentication Email security gateways"See full answer

Hamilton D. - "no"See full answer

Wizzy B. - "URL> DNS over UDP> IP address > TCP handshake > HTTP(SSL handshake) req, responses, websites architectures for any query DB, servers."See full answer

Abdurhman M. - "Solving current problems by considering what would have happened if the past had been slightly different."See full answer

Sunny G. - "https://en.wikipedia.org/wiki/Operational_transformation"See full answer

Raymond W. - "Aim of compression is to reduce the file size and bandwidth consumed in transmission in order to preserve the quality of the image or text as experienced by the consumer/user. Text compression typically uses a library to act as a key for words, either words that repeat in the same document or words that are commonly presented in all documents. And maybe even word parts. Key points are that 1. it tends not to be lossy, 2. is simple/fast/consumes relatively little memory, 3. is pretty standard"See full answer

Sim S. - "Started with user-groups to identify the differences world wide: speed of internet, how high end devices are The interviewer just wanted to dive into the questions of latency & the technical fast. I then said let's separate out server vs client. On server side, cannot have australian users hitting california servers for data. So must be some sort of global availability of caching. And ensure rapid read out of that cache so something like a redis solution would help. Then switch gears to cli"See full answer

Sadhana U. - "Know your audience Understand who the end user is and their role within the organization. Adapt technical lingo to lingo that can be understood by the end user. Diagrams of functions with less dense text is helpful for non-technical users. If it presents like a Manual, that's a turnoff. If it presents like a Guide, non-technical people can follow it. Simplify the problem By simplifying the problem you can explain it to your client in her/his own words. Try to use examples from the client'"See full answer

Hmm T. - "Below are few key things enterprises look for in a data center : Location Proximity to target user base Potential risk exposure due to natural calamities (hurricane, storms, tornedos etc) Real estate cost (Service cost will also be proportional to how expensive it is to acquire and run data center) Security Physical security Logical security (Segregation) Industry standard compliance PCI DSS ISO etc Ability to support HA and DR requir"See full answer

Karthik M. - "Assumptions & Clarifications Users have access to all Google Workspace applications like Google Drive, Gmail and the same photo editing tool - let us call this tool - Google Photo Editor (GPhoto). Users can share the images like Google Docs - giving people read-only, read-write / edit access Goals Google's vision is to organize the world's information and make it accessible. GPhoto's mission / goal is to organize the world’s photo and make it accessible to others to view, edit or"See full answer

Adib M. - "Manage Programs that are in flight Track the progress vs Plan and see if things are on track, falling behind Monitor Risks and update current and any new risks identified and mitigation approach Communicate updates to stakeholders (weekly/biweekly as agreed) Communicate status to peer TPM and partnering teams Daily sync with Engg (like a timeboxed daily Standup to understand Daily Plan and any impediments raised that need resolving) Facilitate Reviews with Product Manager as features"See full answer