Coding Interview Resources

Make sure no one is stealing your Wi-Fi When someone else is using Wi-Fi, the Internet on your device is slower. You pay for the connection, and someone else uses it for free, while also degrading the signal quality: Isn't that a shame? If you want to find out who's using your internet, download the Who's On My WiFi program and you can change the password to prevent the thief from accessing your device. It will show you the IP address, MAC address and names of all the devices connected to your Wi-Fi.

Business Analyst Interview Questions and Answers 👇👇 1. What is analysis in tableau? Ans: Tableau comes with inbuilt features to analyze the data plotted on a chart. We have various tools such as adding an average line to the chart which tableau calculates itself after we drop the tool on the chart. Some other features include clustering, percentages, forming bands of a particular range and various other tools to explore and inspect data. All these tools are available in analyze tab on each sheet used to create any chart. The features become visible only when they are applicable to the worksheet. 2.How to create sets in tableau? Ans: Sets are custom fields used to compare and ask questions about a subset of data. For creating a set on dimension, right-click on a dimension in data pane and select create -> set. In general tab select the fields that will be considered for computing the set. Specify the conditions to create set in conditions tab and you also have the option to select top N members in dataset based on any field in the top tab. When a set is created it divides the measure into two parts namely in and out of the set based on the conditions applied by the user. 3.Why and how would you use a custom visual file? A custom visual file is used when none of the pre existing visuals fit the business needs. Custom visual files are generally created by Developers which can be used in the same way as prepackaged files. 4. What are the various type of users who can use Power BI? Ans: PowerBI can be used by anyone for their requirements but there is a particular group of users who are more likely to use it: Report Consumers: They consume the reports based on a specific information they need Report Analyst: Report Analysts need detailed data for their analysis from the reports Self Service Data Analyst: They are more experienced business data users. They have an in-depth understanding of the data to work with. Basic Data Analyst: They can build their own datasets and are experienced in PowerBI Service Advanced Data Analyst: They know how to write SQL Queries and have hands-on experience on PowerBI. They have experience in Advanced PowerBI with DAX training and data modelling.

A bit obvious, but really useful advice Avoid posting your cell phone number on social networks and other open sources, if you don't want to receive spam calls and SMS. Such numbers are collected by parser programs, and then used to form databases for calls and mailings.

The WWW and the Internet Well, what is the difference between the World Wide Web and the Internet? Let's get rid of a common misconception: the Internet and the World Wide Web (WWW) are not the same thing. The Internet has been around much longer, and the term applies to any networked computer. The World Wide Web is the specific way we access information stored on the Internet by connecting to sites through the HTTP protocol. #SomeTheory

A list of resources in different fields of Computer Science. #list #awesome #python #course #science #database #network #algorithm #cryptography https://github.com/the-akira/Computer-Science-Resources

Introduction to Machine Learning (Fall 2020) By Massachusetts Institute of Technology, MIT Length: 13 weeks 🔗 Course Link #ml #machinelearning #datascience #MIT ➖➖➖➖➖➖➖➖➖➖➖➖➖

What is the use of Destructor in Java? What is a Destructor? A destructor is a special method that gets called automatically as soon as the life-cycle of an object is finished. A destructor is called to de-allocate and free memory. The following tasks get executed when a destructor is called. - Releasing the release locks - Closing all the database connections or files - Releasing all the network resources - Other Housekeeping tasks - Recovering the heap space allocated during the lifetime of an object Destructors in Java also known as finalizers are non-deterministic. The allocation and release of memory are implicitly handled by the garbage collector in Java. Finalizers in Java have to be implicitly invoked since their invocation is not guaranteed, unlike C# finalizers which get invoked during the .NET run-time. Let’s take a look at key properties of a destructor: - Overloading or inheritance is not allowed - No specification of access modifiers or parameters - Automatic invocation and no explicit call from the user - Used in classes but not in structures - The order of the class varies from the most derived class to the least derived class - Also called when the object instance is no longer eligible for access - Used for releasing un-managed resources instead of managed resources held by the object Garbage Collector A garbage collector is a program that runs on the Java virtual machine to recover the memory by deleting the objects which are no longer in use or have finished their life-cycle. An object is said to be eligible for garbage collection if and only if the object is unreachable.

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