ASP.NET MVC Interview questions and answers on Dependency Injection | ASP.NET Interview Questions

Five important ASP.NET MVC Interview Questions around DI
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Below are the five important ASP.NET MVC Core interview questions covered in this tutorial(with Timestamps)
0:00 :- Introduction
01:39 Question 1 :- What is need of Dependency Injection ?
03:18 Question 2 :- Explain IOC ( Inversion of control)?
04:35 Question 3 :- What is the benefit of Dependency Injection ?
05:56 Question 4 :- Scoped vs Transient vs Singleton ?
12:50 Question 5 :- When should we use what ?
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[@RahulSharma-ps1rf]

I cannot give 1000 likes at once. Thank you Shiv sir. Because of your way of teaching in simplest way helped me to reach 3x of my salary. In my 7 years of exp, I was not sure that I can break any interview but in my 8th year of exp I am watching questpond that gave me a confidence that whatever I answer is correct, and answers go into good discussions during interviews. Will keep purchasing highest package of questpond at any cost. Thank you sir

[@questpondvideos]

Thanks Rahul for all love. You just made our day.

[@nomanmirza2079]

Indeed he is the best teacher 😍 love from pakistan

[@nandinijain5284]

Around 5yrs of experience in my IT services I was wondering to have a video like that but this time I hit the sixer... Simply awesome nd make sense videos... After watching one videos I m searching for all your video of my tech

[@theww.9806]

Outstanding explanation. Thanks a lot for providing such a valuable tutorial.

[@MohanPatil_Software_Engineer]

I might have read the scope many times, but no one explained in such way, today I totally understood the scopes

[@Nicetrycutiepie]

shiv is sir just best in terms of concept explanation with examples , getting audiences into same page of learning curve.

[@rhoonah5849]

Excellent video. I didn't want this for an interview but because I was just tasked with writing a gRPC service using DI and wanted to learn the differences between AddSingleton, AddScoped and AddTransient and this video explained it in simple terms perfectly. Thank you.

[@leemafashion6628]

You use dapr?

[@rohangiri854]

The best explanation ever ……such a great teacher 🙏 KZbin should have “SuperLike” button or something for such videos. Thank you so much sir 🙏

[@phoneaddict9497]

I hv been following questions since many years 🎉no doubt he is the best

[@gyanraj21]

This is the best video i have seen on this topic so far.... Great work Sir 👍

[@harryrodd4383]

Thank you good sir. This is the best explanation I have seen about D.I. and I can say I finally understand it now.

[@aniljha3514]

Could not be better than this. Perfect ❤️

[@donnaeloisa]

This is very helpful. Definitely worth the time watching. Thank you!

[@gauravgupta3695]

Very Clear explanation.. Thanks Shiv Sir..

[@paromitaghosh5344]

Thank you Shiv Sir. Learnt more from you than from anywhere else

[@sameerarasanga8975]

Great, well explained, consise and to the point. Good summary of dependency injection

[@vaibhavachanty3659]

Fantastic man! I completely understood

[@questpondvideos]

Timestamps :- 01:39 Question 1 :- What is need of Dependency Injection ? 03:18 Question 2 :- Explain IOC ( Inversion of control)? 04:35 Question 3 :- What is the benefit of Dependency Injection ? 05:56 Question 4 :- Scoped vs Transient vs Singleton ? 12:50 Question 5 :- When should we use what ?

[@Dhanya005]

Shiv sir. Thank you .I just cleared an interview today because of ur videos..DI concept one stop ur site..

[@vagatsinghrathore1756]

Thanks a lot, really this is the first video which I found with a real time example .. Good explanation technique

[@ramanjitsingh5211]

You did very good job and I can see your hard work, thanks a lot

[@deepakmitawa8106]

awesome explanation, thanks a lot for providing this kind of video.

[@saudimran5515]

Thank you sir your like a life saver during interviews 🙏

[@gaurangnaik8192]

I was never so clear about this concept. Thank you so much shiv sir.

[@singhgyan72]

The best thing is your teaching skills, thanks a lot sir.

[@TheUjjwalpandey]

Agree

[@sufiyanbudye4275]

Very well explained... Thank you sir !!

[@manasmangalpattanaik3539]

It's very useful and effective. Awesome.

[@keerthiraja1988]

Clear cut explanation. I am using Di for 6 years. But now understand the terminology in details. Also most of .net poeple are well placed and salaried due this channel. Hats off.

[@SkeletonBill]

This helped me a lot, I had trouble understanding DI even though it's not a complex concept. Turns out I've always used DI without knowing it. Much thanks.

[@AsifKhan-mc4nf]

Now the concept is crystal clear thankyou so much for video.

[@questpondvideos]

Do send email, follow complete instructions given in the video.

[@manishkumar-xy9hi]

Very well explained 👍🏻👍🏻🙏🏻

[@spartanshinde]

Hopefully I will hit it out of the park 🙏🏽🙏🏽

[@sangeetar1010]

Thank you sir. Excellent teaching.

[@alfredjose1403]

Thank you! Well explained. Keep it up

[@daudulislam156]

thanks brothers your concept so clear.

[@maheshdivekar8999]

Thanks Shiv Sir for your nice explanation. 10000 and more likes

[@aneeshrajr2418]

Thankyou Sir for this wonderful video

[@anilsinghsw]

Very well Explained...

[@user-ei9mi3mq4n]

awesome explanation, just know that you saved me a lot of my time)

[@Aravindabisheik]

Thanks sir for your explanation. I am having 7.5 years of experience frankly saying still now I am answering wrongly with understand. Now I understood very clearly thanks a lot ❤❤❤❤

[@meeranfakih5808]

wow what is ur ctc

[@mohammadkalbouneh7892]

Man i never thought i can get this info this easy

[@makodevishal]

Thanks for explaining 🙂

[@barwalgayatri4655]

Best Explained

[@naveenbaghel5327]

Awesome Knowledge Boss 👍

[@moumantimusicalmasti]

Great sir,I bacome fan of you 🙏😊

[@neelamkushwaha6098]

Well explained.

[@tomarshabh2199]

great session thank you it

[@ghoshaninda]

Thank you Sir for simple explanation of Scoped vs Transient

[@RudraPratapSinghLearning]

Thanks a lots and lots ❤️

[@viraldestination]

Great !

[@IraquiRizwanVlogs]

Amazing

[@ganeshsanka789]

Clear explanation sir, Thank you... I have a doubt sir, correct me if I am wrong, In this scenario you directly coupled caching class in singleton, scooped and transient methods, I think loosely coupled not achieved here, Thank you...

[@vivekbarkam465]

Thank you sir...

[@ghulammustafajagirani8380]

v v nice

[@HiYoutuberLog]

Thank you sir ji

[@bhaktisagarwithankit]

Awesome

[@kavitadeorukhkar2329]

thank you sir

[@junaid_aslam]

Why would you need to inject the DbContext three times in the same controller as in the example above?

[@pavanimmadisetty5099]

can you share a playlist with all the videos related to dependency injection in an order? I am going thorugh your concept and not finding what is the next video

[@theFijian]

Good video, although you could have included his to inject configuration

[@ghulammustafajagirani8380]

nice

[@cheequsharma7391]

1 QUESTION I HAVE. IS INJECTING DEPENDENCY THROUGH ADDSINGLETON IS SAME AS GETTING ISNTANCE THROUGH SINGLETON DESIGN PATTARN.? BIG FAN, Sir.

[@aniljha6106]

We need now same series of questions for azure

[@AthelstanEngland]

Thank you, too old for interviews now but this was just the clarification I needed. Can I offer just one bit of advice on your excellent English. We pronounce GUID as Gooo and ID as in the word idiot.

[@sailorm79]

Answer at all questions at once: you might need access to a class and you shouldn't be forced to new it up every time no matter if its scoped, transient, or a singleton.

[@biccavolusriram8687]

Hello sir , Please can you explain IOC with Example , I dint get clarity on that Please so am waiting for your response

[@gspbgmcenter3008]

What is obj.guid ?

[@yousufanwer99]

please make video on SOLID principles

[@questpondvideos]

SOLID Principles video we have covered in this course - www.questpond.com/learn-design-pattern-step-by-step/cid10

[@sadakagaja]

Dear sir your explanation about oops concepts and everything you explain is awesome All these concepts are helping me a lot Keep teaching us with Great lessons 👌🙏

[@imageprocessing4757]

In scoped if all objects are referring to same instance, what's the point of having multiple objects. Just didn't understand this part, everyone welcome to answer

[@gspbgmcenter3008]

Why don't we use singleton for mydbcontext

[@keerthiraja1988]

I guess, It will create issues while handling multiple requests. Singleton should be used for light weight and frequently used in memory objects.

[@questpondvideos]

One transaction will collide with other....Dangerous move to make DBContext singleton

[@gspbgmcenter3008]

@@questpondvideos thank you sir

[@keerthiraja1988]

@@questpondvideos I just removed performance issues in previous comment.

[@keerthiraja1988]

One best practice is to create a class wrt to appsetting.json Create and bind the appsetting to the class at Startup Make object as singleton, Code available in stackover flow Rather getting config using key value.

[@RizwanTalib]

Sir I gave interview and answer for dependency Injection same as you told in video interviewer said wrong dependency Injection reduce number of creation of object and about IOC, I answered your answer He said due to interfaces IOC Happens. Sir Please let me know what to do in that kind of situation he will fail 😬me in interview

[@RizwanTalib]

He also said I have 20 year of experience and also give workshops and also He Transient means short lived not your Concept😭😭

[@questpondvideos]

Great you have a EGOISTIC Interviewer I am sorry :-) and you can not do much about it. When an interviewer is flashing his 20 years of experience and public speaking during interviews , i doubt he is there to get good candidates. During such times just smile and lay down so that we do not loose the opportunity. Transient English meaning is short lived and looks like he just stuck to that English definition. Transient other definition is volatile , changing , So different instances get injected for every object requested. Whats the point in controlling number of instances :-) until you have specific need of the same. I have tried to show the code with explanation what more you can do :-) to convince any one. :-)

[@RizwanTalib]

@@questpondvideos For Transient I tried to make him understand GUID instance injection example he said it is not possible. Any way Thank You sir Answer You are teaching Best My Concepts are crystal clear I don't care if anyone fails me

[@stewiegriffin6503]

I don't get it

[@MarkoMijuskovic]

Maybe I didn't hear it but you forgot to talk about the cost of transient vs. scoped vs. singleton. Obviously injecting with transient will have a much higher performance cost no matter what DI container you're using.

[@questpondvideos]

Good point. Yes, cost is surely more in transient. But more than cost is the scenario. If you have a genuine scenario you need to bear that cost.

[@garancha]

Very repetitive

[@colombiandevelopers9848]

nice thanks very usefull

[@ghulammustafajagirani8380]

nice