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The most learning-intensive 3 hours of my life
Recently, I came across my notes from a technical interview I did back in 2017 with a funded tech startup. The interview consisted of a 30-minute video call, followed by a coding assignment that took about 2 hours, and a 30-minute feedback session the following day.
Despite doing well on the call and having a stimulating discussion with their CTO, I did a pretty mediocre job of the coding task. It was a full-stack to-do list project that required building a bunch of interactive features in a short timespan and I found it challenging to complete in time. Still, I was fairly optimistic about getting the job because I knew other candidates were in the same boat.
When I received my feedback tomorrow, I was told that they chose someone else for the position and they were kind enough to provide a detailed list of reasons.
Here is what went wrong and what I learned from the experience. The test project was in Laravel and Vue.js, but the concepts apply to all tech stacks. All italics below are from the client’s feedback.
Having completed about a dozen of projects in Laravel, I was right at home with setting up the environment and project infrastructure. I built my model relationships, controllers, requests, and policies very efficiently.
Given the limited amount of time, I thought I did reasonably well on the testing front as well. The feedback reflected as much.
Good overall performance in Laravel
Wrote a good number of HTTP/feature tests
An attempt was made at all requirements
Good use of route-model binding, request validation, middleware
Notice something about those four items? They all refer to the back-end. The “attempt was made” made me a little wary of what was to come.
#productivity #interview #laravel #software-development #freelancing
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Android Interview Questions and Answers from Beginner to Advanced level
DataFlair is committed to provide you all the resources to make you an android professional. We started with android tutorials along with practicals, then we published Real-time android projects along with source code. Now, we come up with frequently asked android interview questions, which will help you in showing expertise in your next interview.
Android – one of the hottest technologies, which is having a bright future. Get ready to crack your next interview with the following android interview questions. These interview questions start with basic and cover deep concepts along with advanced topics.
1. What is Android?
Android is an open-source mobile operating system that is based on the modified versions of Linux kernel. Though it was mainly designed for smartphones, now it is being used for Tablets, Televisions, Smartwatches, and other Android wearables.
2. Who is the inventor of Android Technology?
The inventors of Android Technology are- Andry Rubin, Nick Sears, and Rich Miner.
3. What is the latest version of Android?
The latest version of Android is Android 10.0, known as Android Q. The upcoming major Android release is Android 11, which is the 18th version of Android. [Note: Keep checking the versions, it is as of June 2020.]
4. How many Android versions can you recall right now?
Till now, there are 17 versions of Android, which have their names in alphabetical order. The 18th version of Android is also going to come later this year. The versions of Android are here:
5. Explain the Android Architecture with its components.
This is a popular android developer interview question
Android Architecture consists of 5 components that are-
a. Linux Kernel: It is the foundation of the Android Architecture that resides at the lowest level. It provides the level of abstraction for hardware devices and upper layer components. Linux Kernel also provides various important hardware drivers that act as software interfaces for hardwares like camera, bluetooth, etc.
b. Native Libraries: These are the libraries for Android that are written in C/C++. These libraries are useful to build many core services like ART and HAL. It provides support for core features.
c. Android Runtime: It is an Android Runtime Environment. Android Operating System uses it during the execution of the app. It performs the translation of the application bytecode into the native instructions. The runtime environment of the device then executes these native instructions.
d. Application Framework: Application Framework provides many java classes and interfaces for app development. And it also provides various high-level services. This complete Application framework makes use of Java.
e. Applications: This is the topmost layer of Android Architecture. It provides applications for the end-user, so they can use the android device and compute the tasks.
6. What are the services that the Application framework provides?
The Android application framework has the following key services-
a. Activity Manager: It uses testing and debugging methods.
b. Content provider: It provides the data from application to other layers.
c. Resource Manager: This provides users access to resources.
d. Notification Manager: This gives notification to the users regarding actions taking place in the background.
e. View System: It is the base class for widgets, and it is also responsible for event handling.
7. What are the important features of Linux Kernel?
The important features of the Linux Kernel are as follows:
a. Power Management: Linux Kernel does power management to enhance and improve the battery life of the device.
b. Memory Management: It is useful for the maximum utilization of the available memory of the device.
c. Device Management: It includes managing all the hardware device drivers. It maximizes the utilization of the available resources.
d. Security: It ensures that no application has any such permission that it affects any other application in order to maintain security.
e. Multi-tasking: Multi-tasking provides the users the ease of doing multiple tasks at the same time.
8. What are the building blocks of an Android Application?
This is a popular android interview question for freshers.
The main components of any Android application are- Activity, Services, Content Provider, and Broadcast Receiver. You can understand them as follows:
a. Activity- It is a class that acts as the entry point representing a single screen to the user. It is like a window to show the user interface.
b. Services- Services are the longest-running component that runs in the background.
c. Content Provider- The content provider is an essential component that allows apps to share data between themselves.
d. Broadcast receivers- Broadcast receiver is another most crucial application component. It helps the apps to receive and respond to broadcast messages from the system or some other application.
9. What are the important components of Android Application?
The Components of Android application are listed below:
10. What are the widgets?
Widgets are the variations of Broadcast receivers. They are an important part of home screen customization. They often display some data and also allow users to perform actions on them. Mostly they display the app icon on the screen.
11. Can you name some types of widgets?
Mentioned below are the types of widgets-
a. Informative Widgets: These widgets show some important information. Like, the clock widget or a weather widget.
b. Collective Widgets: They are the collection of some types of elements. For example, a music widget that lets us change, skip, or forward the song.
c. Control Widgets: These widgets help us control the actions within the application through it. Like an email widget that helps check the recent mails.
d. Hybrid Widgets: Hybrid widgets are those that consist of at least two or more types of widgets.
12. What are Intents?
Intents are an important part of Android Applications. They enable communication between components of the same application as well as separate applications. The Intent signals the Android system about a certain event that has occurred.
13. Explain the types of intents briefly?
Intent is of three types that are-
a. Implicit Intents: Implicit intents are those in which there is no description of the component name but only the action.
b. Explicit Intents: In explicit intents, the target component is present by declaring the name of the component.
c. Pending Intents: These are those intents that act as a shield over the Intent objects. It covers the intent objects and grants permission to the external app components to access them.
14. What is a View?
A view is an important building block that helps in designing the user interface of the application. It can be a rectangular box or a circular shape, for example, Text View, Edit Text, Buttons, etc. Views occupy a certain area of the screen, and it is also responsible for event handling. A view is the superclass of all the graphical user interface components.
15. What do you understand by View Group?
It is the subclass of the ViewClass. It gives an invisible container to hold layouts or views. You can understand view groups as special views that are capable of holding other views, that are Child View.
16. What do you understand about Shared Preferences?
It is a simple mechanism for data storage in Android. In this, there is no need to create files, and using APIs, it stores the data in XML files. It stores the data in the pair of key-values. SharedPreferences class lets the user save the values and retrieve them when required. Using SharedPreferences we can save primitive data like- boolean, float, integer, string and long.
17. What is a Notification?
A notification is just like a message that shows up outside the Application UI to provide reminders to the users. They remind the user about a message received, or some other timely information from the app.
18. Give names of Notification types.
There are three types of notifications namely-
a. Toast Notification- This notification is the one that fades away sometime after it pops up.
b. Status Notification- This notification stays till the user takes some action on it.
c. Dialog Notification- This notification is the result of an Active Activity.
19. What are fragments?
A fragment is a part of the complete user interface. These are present in Activity, and an activity can have one or more fragments at the same time. We can reuse a fragment in multiple activities as well.
20. What are the types of fragments?
There are three types of fragments that are: Single Fragment, List Fragment, Fragment Transactions.
21. What are Layout XML files?
Layout XML files contain the structure for the user interface of the application. The XML file also contains various different layouts and views, and they also specify various GUI components that are there in Activity or fragments.
22. What are Resources in Android Application?
The resources in Android Apps defines images, texts, strings, colors, etc. Everything in resources directory is referenced in the source code of the app so that we can use them.
23. Can you develop Android Apps with languages other than Java? If so, name some.
Yes, there are many languages that we can work with, for the development of Android Applications. To name some, I would say Java, Python, C, C++, Kotlin, C#, Corona/LUA.
24. What are the states of the Activity Lifecycle?
Activity lifecycle has the following four stages-
a. Running State: As soon as the activity starts, it is the first state.
b. Paused State: When some other activity starts without closing the previous one, the running activity turns into the Paused state.
c. Resume State: When the activity opens again after being in pause state, it comes into the Resume State.
d. Stopped State: When the user closes the application or stops using it, the activity goes to the Stopped state.
25. What are some methods of Activity?
The methods of Activity are as follows:
26. How can you launch an activity in Android?
We launch an activity using Intents. For this we need to use intent as follows:
27. What is the service lifecycle?
There are two states of a service that are-
a. Started State: This is when the service starts its execution. A Services come in start state only through the startService() method.
b. Bounded State: A service is in the bounded state when it calls the method bindService().
28. What are some methods of Services?
The methods of service are as follows-
29. What are the types of Broadcast?
Broadcasts are of two types that are-
a. Ordered Broadcast: Ordered broadcasts are Synchronous and work in a proper order. It decides the order by using the priority assigned to the broadcasts.
b. Normal Broadcast: These are asynchronous and unordered. They are more efficient as they run unorderly and all at once. But, they lack full utilization of the results.
30. What are useful impotent folders in Android?
The impotent folders in an Android application are-
31. What are the important files for Android Application when working on Android Studio?
This is an important android studio interview question
There are following three files that we need to work on for an application to work-
a. The AndroidManifest.xml file: It has all the information about the application.
b. The MainActivity.java file: It is the app file that actually gets converted to the dalvik executable and runs the application. It is written in java.
c. The Activity_main.xml file: It is the layout file that is available in the res/layout directory. It is another mostly used file while developing the application.
32. Which database do you use for Android Application development?
The database that we use for Android Applications is SQLite. It is because SQLite is lightweight and specially developed for Android Apps. SQLite works the same way as SQL using the same commands.
33. Tell us some features of Android OS.
The best features of Android include-
34. Why did you learn Android development?
Learning Android Studio is a good idea because of the following-
35. What are the different ways of storage supported in Android?
The various storage ways supported in Android are as follows:
36. What are layouts?
Layout is nothing but arrangements of elements on the device screen. These elements can be images, tests, videos, anything. They basically define the structure of the Android user interface to make it user friendly.
37. How many layout types are there?
The type of layouts used in Android Apps are as follows:
38. What is an APK?
An APK stands for Android Package that is a file format of Android Applications. Android OS uses this package for the distribution and installation of the Android Application.
39. What is an Android Manifest file?
The manifest file describes all the essential information about the project application for build tools, Android operating system, and google play. This file is a must for every Android project that we develop, and it is present in the root of the project source set.
#android tutorials #android basic interview questions #android basic questions #android developer interview questions #android interview question and answer #android interview questions #android interview questions for experienced #android interview questions for fresher
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Getting past the technical and coding interview is not always an easy task for most people.
Lucky for you, there are some amazing resources to help you go through easily and grab that position.
In this article, we will go through some of the best GitHub repositories to help you smash the coding interview.
These collections of repositories are essential in highlighting the different arears to focus on and different topics and questions to expect.
Front-end Developer Interview Questions
This repository is everything that entails frontend development.
Covered content includes:
#coding-interviews #technical-interview-tips #programming-interviews #interview-preparation #interview
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Why is my Cash App Transfer Failed [Solution 2021]? yes sure you can use this app for online Payment Transfer, Call @+1 (855)698 5775 If you are facing any issues related with cash app transfer then you can contact on this number, If you are having trouble making any transfer on Cash App and your payment fails on Cash App then you need to first check if your Cash App is updated on your mobile or not. If not, then update the app to the latest version to make payments smoothly.Cash App transfers are almost always instantaneous. However, there are occasions when the app throws an exception, asking you to wait a little longer — aka 'Payment Pending. ’ It simply means the transfer has been initiated but cannot be fulfilled instantly
Cash App may fail your transaction to protect you from any fraud. Cash App monitors your account and if any suspicious activity takes place, it fails the transaction for your protection. This happens in order to save you from any scam and lose your money.
Payments on Cash App with the error “failed for my Protection” may be declined for a few reasons. Some of the most common reasons include: Your bank or card issuer is declining the transaction, Incorrect details and the payment has triggered one of Cash App automated security flags.
How do I enable direct deposit on a cash App? After successful activation, the employer will be able to pay your paycheck directly into your Cash App account. Follow these steps. Firstly, open the Cash App and click on the profile icon or Balance tab-present in the updated version of Cash App. After that, now navigate down to get the option “Direct Deposit”.
Relaated articles :- Why is my Cash App direct deposit failed ?
How to Fix Cash App Payments for my protection? If you’re having trouble sending payment, make sure to check if you have added your correct credit or debit card to the Cash App, the best thing to do is double-check or reach out to your card issuer to confirm that there are no issues. If you’re waiting to receive more than $10,000 via direct deposit, your best bet is to request that the sender split the payment into two parts …
Cash App transfer failed for your security means that the transaction you are trying to make went unsuccessful. It might be any kind of transfer such as bank transfer, online or offline payment, cash withdrawal at an ATM and sending or receiving money to and from contacts.
If you have got the Cash app Transfer failed error, then you have the option to raise a dispute for an unapproved transaction since you are a bank account holder. It is your right to dispute the unauthorized deductions made by the App
Cash app has witnessed considerable growth, with more than 30 million users. It is widely used in the US in order to make payments or transfer money to family and friends. The platform processes millions and millions of transactions on a daily basis. But this percentage is observed to have a huge drop due to Cash App transfer failed issues. About 10% of the total transactions are failing almost daily due to different reasons.
If you are having a similar sort of problem where the Cash App transaction failed, this article might be a useful one for you. It tells about the causes of the Cash app transfer failed error and mentions a few fixes that work for most of the causes as well. Hence, if you are encountering the same problem, read through this article to find your possible fix.
Although the number of causes behind a Cash app seems to be quite high, some of the key reasons are as mentioned:
Since all your transactions take place online, it requires a strong internet connection. Therefore, whenever you encounter a payment failure issue, the first thing is to check for your internet connectivity. For more efficient results, it is always better to connect your device to reliable Wi-Fi, if available.
It happens quite often when users try to make a possible transaction without checking their account balance. If in case you don’t have enough amount in your cash app wallet or bank account, your transaction will fail.
Whether you are having your account with Bank of America, PNC, or wherever, all these banks probably have their own fraud departments. These departments flag certain services as scams/ frauds. And since there are already a lot of scams operated on the Cash app these days, it adds up as a considerable reason for them to block transactions.
Cash app has now grown into a billion-dollar company with around 30+ million users. Therefore, in order to maintain the security and privacy of its users, the Cash app has strict policies. So, if due to some reason, the application might have flagged the other person’s account as potential scam/ fraud, it might again cause a Cash app transfer failure.
These were some of the possible causes of Cash app transfer failed. However, most times, the following solutions might do a pretty good job of resolving your issues.
Since the whole thing is about transactions, there could be a bunch of other causes behind a failed transfer. These are just some basic fixes that actually work in most of the above-mentioned causes.
Related articles- How To Cash App Direct Deposit Failed ?SOlution | tranter-it
If your account balance is low in the case of the Cash app, it will eventually result in a failed transaction. However, to avoid such messages, it is a wise habit to always check your account balance or Cash app wallet balance before making a transfer.
Related article :- What happens when the cash app direct deposit failed? How to fix it?
Another primary reason behind encountering failed transactions is because of using blocked or rejected cards. Cash app often displays this error message basically due to server issues of the bank. To avoid such errors, you can try using a different credit/ debit card or bank account.
This is a very common mistake done by most users. Entering the wrong bank details will definitely lead to an cash app unsuccessful or failed transfer. Therefore, it is a good practice to be a little extra careful while entering such sensitive data.
The Cash app might sometimes block your transactions, or it might flag the other person’s account as possible fraud in rare cases. In such situations, the wisest option is to contact the cash app’s support team and ask for assistance regarding the issue you are facing.
If the bank itself terminates the transaction, contact your bank and ask for what reason the Cash app transfer failed through their system. They will inform you in case there are any serious issues and also advise the best way to overcome it.
Cash App monitors your account for anything that looks out of the ordinary. If a potentially fraudulent payment occurs, we cancel it to prevent you from being charged. When this happens, your funds will instantly be returned to your Cash App balance or linked bank account.
Why does my Cash app keep saying Transfer failed?The reason why transfer fail every time can be because of the card which is updated on the account has expired or the details of the card are not correct. So, always you need to make sure that the card which is you are using is not expired and the details are correct.
Cash App transfer failed for your security means that the transaction you are trying to make went unsuccessful. It might be any kind of transfer such as bank transfer, online or offline payment, cash withdrawal at ATM and sending or receiving money to and from contacts.
Cash app has now grown quite popular with millions of users trusting its service. And undoubtedly, the application offers a great platform for easy transfer of money along with its other services. However, a lot of scams have already been reported regarding this application. So, if anyhow you face some sort of trouble and encounter the Cash app transfer failure, these tricks must help you find a way to resolve the problem and make efficient money transfer over the app. Let us know if this article helps you or if we missed out on something.
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Disclaimer: this reflects my personal opinions, not those of my employer.
Over the last few years, I have interviewed hundreds of candidates for positions in Software Engineering, Software Engineering Management, Product and Product Marketing Management, Technology Evangelism, and others. It has always bothered me how many people accidentally sabotage themselves, making entirely avoidable mistakes in the early stages of interviews and phone screens, preventing interviewers from getting to know those candidates better, forcing the premature end of the process for them.
I call these mistakes avoidable because not making them is entirely under the interviewee’s control, having nothing to do with aptitude, competence, interviewer having a bad day, or not being fit for a certain position. If you can avoid them (and you can!), then you are already standing out from the crowd, for being able to make your “elevator pitch” in a way that assures interviewers that you’ll be able to handle yourself in a loop with their peers and managers.
Without further ado, this is how you can do better in your job interview:
A short introduction is a short introduction!
Not an invitation for you to read through your resume. So when asked by the interviewer to give “a quick introduction so we can get started”, do just that. Time it to 90 seconds or less. This is about who you are, not (yet) about what you have done. Let’s mock it:
Interviewer: “My name is X, I have been at this company for 5 years, doing X, Y, Z, and prior to this I spent most of my career doing mobile development, now I’m managing this team and am the hiring manager for this position.”
You: “My name is Y, I started in 19xx, when I was born, then went to school, where I learned how to read (…) then I had the opportunity to learn Docker, which I think is the future with Kubernetes, AI, and the Blockchain.”
WRONG. This is what you have done, not who you are.
You: “My name is Y, I’m an Engineer/Marketer/Product person, I’ve graduated from X, been in this market for 5 years, most recently at company Y, and I love being at the intersection of product and engineering, and that’s why I applied for the position”.
Speaking of time
Don’t talk too much, or for too long. If you have been talking for 5-6 minutes without pause, your interviewer is probably already distracted and unable to piece your story together to a coherent whole. Keep answers short and to the point, make pauses, ask if the interviewer has questions, continuously check back to see if the person is still with you. If not, it’s probably time to stop talking.
A couple of extra tips here: if the company interviewing you requires that people take notes about your answers, you can pay attention to when the interviewer has stopped typing. It probably means you are adding nothing to your answer, so change gears. A second cue is that, for video interviews (or live, like in the good ole days), if the person you’re talking to has gone static, not reacting to anything you said, that’s a good sign that you should stop talking.
What’s your motivation?
“Why did you apply for this position?” is considered by many the easiest question in an interview. Well, I have news for you: it isn’t.
There are many ways to answer this question in a way that will immediately raise suspicion in a good interviewer that you don’t know what position you’re applying for, which may be a terminal mistake in a selection process.
Here are some bad answers:
Some good ones:
#interview #interview-tips #interviewing #job-search #tech-jobs #communication #recruiting #hr
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In this article, I share what I think is one of the best tips when it comes to design interviews.
As a junior UX designer, I’ve been asked a few times by my peers: what is the most essential UX interview tip I have?
Well, to this question I have a very simple answer,** just be honest**… well, this might sound like a no brainer, but it seems to me that not many junior designers know about it or want to apply it.
I had the chance to speak with a few designers and I discovered that some tend towards being a little bit insincere when going through interviews for design positions. It’s normal to be intimidated when going through an interview process and you might want to act as if you have more experience than you have to secure the job.
Well, I’m here to suggest that that’s not the right approach. I fact, recruiters know in advance that as a junior designer you won’t have many years worth of experience so instead of being insincere it’s better to show up with an open mindset and being honest.
A mindset of learning and improving is always welcomed and valued in today’s world. Simple answers like “I might not know X because I’ve haven’t had the chance to get at it but I can learn it as I’m an avid Lerner” go a long way with recruiters.
Put yourself on your recruiter’s shoes, would you rather employ someone “that answers to 90% of the requirements’’ but doesn’t show a growth mindset, or would you employ someone “that answers to 70% of the requirements’’ but shows it’s the thirst for learning and improving?
That’s not to say that you’ll show up with no qualifications at all. You still have to have a certain level of expertise. “Don’t be the guy with 30hrs of experience using Sketch and 1hr of prototyping experience calling himself a UX designer”.
Some skills can be rapidly learned with just a little bit of discipline and will so don’t be afraid to answer with a no if you haven’t had experience with certain techniques due to lack of opportunity of doing so, for example. It’s always easier to learn something new than being perceived as untrustworthy because you said you were qualified to do something but you finally weren’t.
keep in mind that being sincere is always the way… not just during job interviews but in life. Anytime you’re being insincere to achieve something, most probably, the lie will end catching you back and having the opposite effect you wanted it to have.
Anyway, I’ll stop with my “life lessons” and I’ll wish you a very successful interview.
Hopefully, this little advice does help you.
#design-interview #job-interview #system-design-interview #job-interview-tips #ux-interview