Transcript for transcript_1RqFAT_dyxAfNTZGHwc03Qi_xp2hN26ey_1_1960_cbb0530277ef_3.txt

transcript_1RqFAT_dyxAfNTZGHwc03Qi_xp2hN26ey_1_1960_cbb0530277ef_3.txt

[00:02:26]  Hi, hello.
[00:02:27]  This is Mohan from NextWave.
[00:02:32]  Hello.
[00:02:36]  So I need two to three minutes to coordinate with the students.
[00:02:41]  So I.
[00:02:41]  Yeah, let Vaishnavi also join the technical person.
[00:02:47]  Yeah, sure.
[00:02:49]  So I will be coordinating with the students.
[00:02:52]  Okay.
[00:05:56]  Hi, Banu.
[00:05:57]  Hi, Vishnavi.
[00:05:58]  Yeah.
[00:06:00]  Hi, Deepak.
[00:06:04]  Good evening, ma'am.
[00:06:06]  Good evening.
[00:06:08]  The coordinator is this.
[00:06:10]  Can we start the interview?
[00:06:12]  Yes.
[00:06:18]  Yeah.
[00:06:19]  Deepak, just keep your video on.
[00:06:21]  We always, you know, want the candidate to be...
[00:06:26]  Keep the video on during the interview.
[00:06:29]  Okay.
[00:06:30]  Ma'am, just two minutes.
[00:06:32]  Yeah, yeah.
[00:07:50]  M.M., I'm audible.
[00:07:53]  Yes, you're audible.
[00:08:23]  Can we start, Deepraj?
[00:08:25]  Yes.
[00:08:27]  Just keep your video on.
[00:08:49]  Some network issues.
[00:09:05]  Vibrat, can you turn on that camera?
[00:09:07]  Just wait, sir.
[00:09:08]  Some network issues.
[00:09:13]  Just one thing.
[00:09:51]  Okay.
[00:09:53]  Vaishnavi, can we start?
[00:09:55]  Yes, ma'am.
[00:09:57]  Yeah.
[00:09:58]  Deepak, that's Vaishnavi.
[00:10:00]  You know, she's the technical head and she'll be the one who will be doing the technical interview with you.
[00:10:05]  And based on the technical assessment that you have given us, we have, you know, moved to the technical interview.
[00:10:15]  I mean, the face to face interview.
[00:10:17]  So just answer to, you know, like the questions that Vaishnavi is asking.
[00:10:24]  Hi Deepraj.
[00:10:26]  Hello man.
[00:10:28]  Yeah, tell me about yourself Deepraj.
[00:10:32]  My name is Deepraj Hoja.
[00:10:34]  I am from Devarya, Uttar Pradesh and I am completed my basic schooling from Devarya and I am pursuing B.Tech Computer Science and Engineering from Hardwar University and currently I am a third year student.
[00:10:47]  My main interest in full stack and one stack development and my core technical skills is JS, TypeScript and Node.js, Express.js, MongoDB and I also am exploring
[00:11:01]  Langs in there, LangGraph and RogueBase architecture and also tried to build some AI powered application and
[00:11:11]  my first project in AI powered application was on Red architecture, AI based educated chatbot platform and also I learned Next.js.
[00:11:26]  For building some SEO friendly
[00:11:30]  UI.
[00:11:31]  That's all about me.
[00:11:34]  So you've mentioned you've done a RAG based project, right?
[00:11:40]  Yes, ma'am.
[00:11:41]  Can you explain about that?
[00:11:44]  Basically, this idea, I explain my idea.
[00:11:48]  Basically, generally,
[00:11:51]  any student pass out with and then they search a lot of colleges and they manually call each college and
[00:12:02]  call the counselor but sometimes they are not available and in this my project basically I use some of
[00:12:13]  chunks of data like PDF format I store in a MongoDB vector database and
[00:12:20]  they help user ask any query and they provide element answer anytime and also I use one
[00:12:31]  call assistant user also speak some face to face conversation in all not a setting that help in my project to
[00:12:44]  give the knowledge about this data basically i'm not using a vector data for cementing such i use in this project to mango db vector data
[00:13:00]  GoDB vector database.
[00:13:02]  Yes.
[00:13:04]  How does that work?
[00:13:06]  Basically, I'm in this database, not a strong cementing search, but this is my first project in database application.
[00:13:17]  So I use this one, but this time I work with another project that I am building a quadrant vector database.
[00:13:34]  Okay, fine.
[00:13:38]  So what information you store in the database?
[00:13:41]  I did not get that.
[00:13:43]  Okay, I give the some PDF URL.
[00:13:48]  This PDF URL is parsed and divided into chunks.
[00:13:54]  These chunks are stored in vector database in embedding format.
[00:13:59]  When user asks in the user query convert into embedding format and this embedding
[00:14:08]  format matches to the embedding data if
[00:14:14]  matching then return and user query and context will be get to LLM and LLM generate some human readable and so on.
[00:14:26]  Okay, which embedding model you have used for the conversion?
[00:14:30]  Okay, embedding model I use Langchain and 80-bit.
[00:14:35]  Sorry?
[00:14:37]  Ma'am, generally I use Langchain and 80-bit.
[00:14:43]  Langchain.
[00:14:44]  Yes.
[00:14:46]  Okay.
[00:14:47]  And what model you have used for querying or the response from the LLMs?
[00:14:53]  Which model you have used?
[00:14:56]  I use Gemini.
[00:14:58]  Gemini.
[00:15:00]  Okay, why Gemini?
[00:15:03]  It's free for me.
[00:15:06]  It's free.
[00:15:07]  Okay.
[00:15:09]  Yeah.
[00:15:11]  So in Mongo, so how have you queried your MongoDB?
[00:15:18]  Like, have you used any interface or you use Mongo shell?
[00:15:24]  So, ma'am, I use MongoDB Atlas for storing the data.
[00:15:31]  And how do you query?
[00:15:32]  You have Atlas, you have stored the data.
[00:15:36]  Yes, ma'am.
[00:15:37]  Okay.
[00:15:38]  So, if you want to retrieve an employee or some user information,
[00:15:44]  How do you query the DB?
[00:15:47]  Basically, ma'am, firstly, I select the user ID and find the based on ID.
[00:15:57]  ID means user email or user, some specific that identify the user.
[00:16:05]  Basically, I use the find one method that help to find the user specific email and collect the information about user.
[00:16:19]  In the Mango TV database.
[00:16:25]  What do you understand about this JWT authentication?
[00:16:30]  Basically, J2 authentication provides the...
[00:16:39]  Basically, I give the example and explain it.
[00:16:42]  When not use J2 authentication,
[00:16:47]  When a user comes in any website, they log in each time when they enter the website.
[00:16:55]  But when we use JWT token, this will verify the user if login previously then verify user.
[00:17:04]  And enter the website.
[00:17:06]  That contains three parts, JWT token.
[00:17:10]  Basically, header, payload and signature.
[00:17:13]  Header contains the metadata and payload contains the user information and signature helps to check this JWT token is tempered or not.
[00:17:33]  This JWT token is generated when user login, the JWT token is generated and this JWT token helps to authorize the user.
[00:17:49]  So what will happen if the user, okay, the token expires?
[00:17:53]  What will happen if the token expires?
[00:17:56]  If token expires, user navigate to the login.
[00:18:02]  Then they re-enter email and password, then generate new token.
[00:18:09]  Okay, so you have an idea about the refresh tokens that is sent?
[00:18:17]  No.
[00:18:19]  Okay.
[00:18:26]  How comfortable are you in Python in the project?
[00:18:32]  Basically, I have worked with only one step and core Python I have knowledge, but I am not comfortable with Python, but I am working in C++ and
[00:18:48]  one step.
[00:18:51]  Okay.
[00:18:52]  In C++, can you explain the OOPS concepts?
[00:18:58]  Okay, man, basically, it's a concept in the...
[00:19:04]  Oops concept is the some architectural behavior where we use some encapsulations and inter effects.
[00:19:25]  where we use classes and
[00:19:38]  So yeah, we use classes and objects.
[00:19:42]  They are the base for encapsulation, abstraction, and yield.
[00:19:50]  Yeah.
[00:19:53]  So you have worked in RDBMS.
[00:19:56]  You know what an RDBMS is?
[00:20:00]  I know how to write query, but I am not working in RDBMS.
[00:20:05]  I only work on the database like MongoDB.
[00:20:10]  Okay.
[00:20:11]  So you know what a primary key is?
[00:20:13]  Like any table?
[00:20:16]  In RDBMS, a primary key identifies the...
[00:20:22]  Specific user like user have some information about user.
[00:20:28]  In there is the primary key in that identify the user specific user and this is called the primary key.
[00:20:37]  So, you know the difference between the primary key and unique key?
[00:20:44]  Basically, primary key and unique key.
[00:20:49]  No, I have only knowledge on priority key for entity.
[00:20:54]  Okay, what's a foreign key?
[00:20:56]  Basically, foreign key defines another table, a unique specific row.
[00:21:06]  That have to connect with other data tables.
[00:21:17]  Okay.
[00:21:21]  What is a callback function?
[00:21:25]  How do you call it?
[00:21:26]  Yeah, yeah.
[00:21:27]  Call it function in a special type of function that pass as an argument to another function and it will do after compilation the function.
[00:21:44]  After execution of the function.
[00:21:51]  So, you know what is destructuring?
[00:21:56]  Yes, this is interesting.
[00:21:57]  Basically, ma'am, I have one object and I want to destructure in
[00:22:07]  like I have object ID destructure, I have object name in my password and I want to destructure it.
[00:22:15]  Then easily we destructure using a SMED operator.
[00:22:21]  Easily manually destructure it like I want to destructure it easily.
[00:22:40]  Okay.
[00:22:42]  Okay.
[00:22:42]  Now you have a user ID and password.
[00:22:45]  Okay.
[00:22:46]  Some user is entering the user ID and password.
[00:22:49]  How will you store it in the database?
[00:22:52]  What will be a selection of database?
[00:22:55]  How will you store it?
[00:22:56]  How will you retrieve it?
[00:22:58]  Okay, basically when a user login, we not store password in plain text because sometimes attackers fix the,
[00:23:13]  guess someone.
[00:23:16]  Password randomly and some of your data will be lost.
[00:23:22]  So we use the decree that has the password and this decree has method are used to has the password and used to in the
[00:23:37]  database.
[00:23:38]  And when we want to compare this,
[00:23:44]  where we use a big crib dot compare easily compare power so what have you used encryption is it
[00:23:57]  oh and I wouldn't be great
[00:24:01]  Just that helps to in
[00:24:03]  has the password and use the salt that adds some extra strength in the backside of the hassle that helps to
[00:24:20]  attacker not guess randomly password like I am store password 12345 but I am not using salt then easily guess by the
[00:24:32]  attacker but we use salt this provide some extra string backside of the hassle that help to protect my password
[00:24:48]  Okay, you know the difference between encryption and hashing?
[00:24:53]  Inception means, ma'am, that inception means
[00:25:00]  They easily convert into plain text, but we have a password, but they not easily convert into plain text.
[00:25:15]  Sorry, your voice was breaking.
[00:25:17]  I couldn't understand.
[00:25:18]  Can you please come again?
[00:25:21]  I'm just when we encrypt the password they easily and they easily into the
[00:25:30]  plain password but when we has the password they did not come into the plain password
[00:25:40]  This is the biggest difference between encryption and the health thing.
[00:25:51]  You have used some other APIs also, MERF, AI and Assembly AI, right, for your project.
[00:26:00]  So why Assembly AI?
[00:26:04]  Basically, ma'am, my algorithm generated some question.
[00:26:10]  I use this today.
[00:26:12]  This question I want to convert into the voice format.
[00:26:18]  So, assembly AI convert text to voice format data.
[00:26:25]  So, I use assembly.
[00:26:30]  So it's basically for text to voice, is it?
[00:26:35]  Yes.
[00:26:37]  Okay.
[00:26:38]  So there are other models also which will convert text to voice.
[00:26:43]  Is there any specific reason why you have used assembly?
[00:26:48]  No, ma'am.
[00:26:49]  I just randomly searched in charity.
[00:26:54]  Simply, they suggested me.
[00:26:59]  Okay.
[00:27:02]  Do you know what is waterfall model of software engineering?
[00:27:07]  What?
[00:27:09]  Waterfall model.
[00:27:12]  Waterboard model.
[00:27:17]  It's a basic idea of it.
[00:27:23]  Basically, I mean, software engineering, a lot of phases is like requirement and gathering phase and
[00:27:32]  deployment phase, testing phase and maintenance phase are used in software development lifecycle.
[00:27:48]  Basic idea about this but I am not explaining deeply about it.
[00:27:53]  Okay, so why have you used Postman?
[00:27:58]  What is the purpose of using Postman?
[00:28:01]  Okay, Postman is basically to test the API is a package.
[00:28:08]  It's a help to testing APIs.
[00:28:13]  Okay.
[00:28:14]  What methods are there in the project?
[00:28:18]  So post method, get method, like that, what methods you have used for API calls?
[00:28:27]  Okay, remember?
[00:28:27]  Basically in HTTP method, I have knowledge only five methods.
[00:28:32]  Get method is used to getting some resources to in backend and post method is used to creating some content in backend and put method is used to
[00:28:45]  update the whole content and the path method is partially update the content and delete method is used to delete the content okay
[00:29:01]  You have mentioned about Redis database.
[00:29:05]  Yes, Redis.
[00:29:07]  Where have you used?
[00:29:09]  Basically, in college project, I work with ERP system.
[00:29:14]  So where I use Redis, basically Redis may help to increase the performance.
[00:29:21]  Basically, I am not using Redis, but I am building a big application.
[00:29:27]  And each time I work with some component in my website UI, all the time I call the backend, but it takes a lot of time.
[00:29:41]  So I use Redis first time, take some time, but when Redis catches the response, when other time I get to this page, they easily
[00:29:57]  this performance will improve
[00:30:00]  using the Redis.
[00:30:04]  So you mean to say Redis has improved your performance?
[00:30:11]  You mean to say that Redis has improved your performance?
[00:30:17]  And then pop on.
[00:30:21]  It has speeded up your process is what you meant to say.
[00:30:25]  Then your voice will be breaking.
[00:30:27]  So you mean to say Redis has improved your performance, right?
[00:30:34]  Yes, sir.
[00:30:34]  Can you hear me?
[00:30:37]  What?
[00:30:38]  Can you hear me?
[00:30:40]  Yes, ma'am.
[00:30:42]  Okay.
[00:30:44]  And why docker basically is used for containerization because it combines all the dependency of my project
[00:30:55]  like i work with node version 15 and you work with node version 17 and i share it my project
[00:31:03]  but you manually download all of versions docker help to containerize all
[00:31:12]  dependency in my project and when I share you, you easily work with my project.
[00:31:19]  No need to install separate dependencies.
[00:31:25]  Fine.
[00:31:25]  How will you know what components are there in a container?
[00:31:30]  Like what's the command to see that?
[00:31:35]  No, ma'am.
[00:31:38]  Okay.
[00:31:38]  A basic idea about how to work and what to use for you, how to operate it.
[00:31:49]  Okay.
[00:31:53]  Yes, Deepraj, I am done with my interview.
[00:31:58]  Do you have any questions?
[00:32:01]  No.
[00:32:02]  Yeah.
[00:32:05]  Yes, Bhanu, so I'm done with the interview.
[00:32:08]  Yeah, Vaishnavi.
[00:32:09]  Dibraj will let you know through the institute.
[00:32:12]  Okay.
[00:32:13]  So once all the interview is over, we'll contact them and they'll give you the results.
[00:32:17]  Okay.
[00:32:19]  Okay.
[00:32:19]  Thank you.
[00:32:20]  Yeah.
[00:32:21]  Thank you.
[00:32:22]  Thank you, Madhuri.
[00:32:27]  Can I ask the next candidate to join?
[00:32:29]  Yeah.
[00:32:30]  Yeah.
[00:32:30]  Vaisal, you can take the other candidate.
[00:32:34]  Yeah, yeah.
[00:32:34]  We'll do that.
[00:32:36]  Yeah.