105 Polestar Solutions Interview Questions and Answers

Django Python

Ques:- What is the list of backends supported by django ?

Asked In :- Vinove Software & Services Pvt Ltd, Aakit Technologies, sciative, toobler technologies, Mindgate Solutions, KLA Tencor Software India, Shaligram InfoTech Inc, AppSquadz, ELDAAS Technologies, Enthuons,

Right Answer:
Django supports the following database backends:

1. PostgreSQL
2. MySQL
3. SQLite
4. Oracle
5. MariaDB

Additionally, there are third-party backends for other databases like Microsoft SQL Server and others.

Python

Ques:- What is the process of compilation and linking in python?

Asked In :- WebReinvent Technologies, Shipmnts, Aurus Tech, Harbinger, Triad Software, Signiwis Technologies, Wavelabs Technologies, Polestar Solutions, zensar technologies, one advanced,

Comments

Admin May 17, 2020

The compiling and linking allows the new extensions to be compiled properly without any error and the linking can be done only when it passes the compiled procedure. If the dynamic loading is used then it depends on the style that is being provided with the system. The python interpreter can be used to provide the dynamic loading of the configuration setup files and will rebuild the interpreter. The steps that is required in this as:
â€¢ Create a file with any name and in any lanugage that is supported by the compiler of your system. For example comp.c
â€¢ Place this file in the Modules/ directory of the distribution which is getting used.
â€¢ Add a line in the file Setup.local that is present in the Modules/ directory.
â€¢ Run the file using spam comp.o
â€¢ After successful run of this rebuild the interpreter by using the make command on the top-level directory.
â€¢ If the file is changed then run rebuildMakefile by using the command as â€˜make Makefileâ€™.

Python

Ques:- How do you copy an object in Python?

Asked In :- Yudiz Solutions, Code Genesis, Next Wave, Yalamanchili Software, Wonderbiz Technologies, Metrics4 Analytics, TP1, Polestar Solutions, Inductive Quotient Analytics, X-Team International,

Comments

Admin Feb 2, 2020

For copying an object in Python, you can try the code copy.copy () or copy.deepcopy() for the generic cases. You cannot copy all the objects but you can copy most of them.

Django Python

Ques:- What do you think is the output of the following code fragment? Is there any error in the code ?

Asked In :- Fluid AI, SWYM, CropIn Technology Solutions, The Unified Cloud, Shaligram InfoTech Inc, Sigmoid Analytics, Cynet Systems, HealthSignz, Relinns Technologies, eBay Classifieds,

Right Answer:
Please provide the code fragment for analysis.

Alfresco

Ques:- What is the role of the Alfresco Digital Workspace

Asked In :- Cybage Software, Keyideas Infotech, Grid Logic Software, SenecaGlobal IT Services, Coviam Technologies, PowerSchool, Citrus Informatics (India), Arya Omnitalk Wireless Solutions, Williams Lea India, Basware India,

Right Answer:
The Alfresco Digital Workspace is a modern, configurable user interface for interacting with the Alfresco repository. It allows users to easily manage and collaborate on content, participate in workflows, and search for information.

AUTOSAR

Ques:- What is a VFB (Virtual Functional Bus) in AUTOSAR

Asked In :- BillDesk, Walking Tree Consultancy Services pvt, Healthians, Mindgate Solutions, Aris Global Software, MAK Controls & Systems, XBRL Ultima, aQb Solutions, Cybernext, chetu,

Right Answer:
A Virtual Functional Bus (VFB) in AUTOSAR is an abstract representation of the communication between software components, allowing them to interact as if they were connected by a physical bus, without being tied to specific hardware or communication protocols.

Alfresco

Ques:- What is the role of Alfresco Share and how does it support collaboration

Asked In :- Radicle Software, Sun Technology Integrators, Energytech Global, Tredence Analytics Solutions, CropIn Technology Solutions, Clicks Bazaar Technologies, Lucid Software, Citrus Informatics (India), Peoplefy Infosolutions, Codersbrain-Startup,

Right Answer:
Alfresco Share is the web-based user interface for Alfresco. It provides a collaborative environment allowing users to manage content, create sites for teams, collaborate on documents, manage tasks, and participate in discussions. It supports collaboration through features like document sharing, version control, workflows, social collaboration tools (blogs, wikis, forums), and activity feeds.

Software Development

Ques:- What is microservices architecture and how does it differ from monolithic architecture

Asked In :- mobifly, HashRoot Technologies, AgilePoint Software India, Direction Software Solutions, Pluribus Networks India, Envision Enterprise Solutions, Estuate, G7 CR Technologies, Knowledge Splice, Microland,

Right Answer:
Microservices architecture is a software design approach where an application is built as a collection of small, independent services that communicate over APIs. Each service is responsible for a specific function and can be developed, deployed, and scaled independently.

In contrast, monolithic architecture is a traditional approach where an application is built as a single, unified unit. All components are tightly integrated and run as one process, making it harder to scale and update individual parts without affecting the whole system.

AUTOSAR

Ques:- What is COM stack and how does it support data communication

Asked In :- CakeSoft Technologies, Ford India, CropIn Technology Solutions, Mass Software Solutions, Celestial Systems Pvt., Acquia Inc., APPS Associates Pvt., ICAT Design & Media College, Smart Cube India, DhruvSoft,

Right Answer:
The COM (Communication) stack in AUTOSAR is a set of software components that facilitate communication between different software components (SWCs) in a vehicle's electronic system. It supports data communication by providing services for message transmission, reception, and management of communication protocols, ensuring reliable and efficient data exchange over various communication channels like CAN, LIN, and Ethernet.

Oracle Software Developer/ Programmer SQL Server

Ques:- What is oops concept?

Asked In :- First Zen, CETPA INFOTECH PVT, Gainers Infotech, CCS Technologies, McKinsey Knowledge Center, Infiniti Software Solutions, Magic Software, Mobisy, Thryve Digital, CliniSys Group,

Database Administrator (dba) SQL Server

Ques:- Which one is faster execute reader, scalar, execute non query ?

Asked In :- DREAMORBIT SOFTECH PVT, TNQ Technologies, Skill Mine Technologies, Invensis Technologies, Teknovance Solutions, ATMECS, Entab Infotech, Savantis, Maxval Technologies, Excelerate,

sql

Ques:- Define unique identifier datatype in Sql Server?

Asked In :- Xoriant Solutions Pvt Ltd, Energytech Global, Elite Software Solutions, IRIS KPO RESOURCING INDIA PVT, G S Lab, SoftNice, Kokoro, NCS SoftSolutions, Fastlab, QualiTLabs,

Database Analyst/ Programmer SQL Server

Ques:- What magic tableWhat happen when we run any command or stored procedure is it compile ?

Asked In :- Sumedha Softech, Zyoin Web Pvt., PreludeSys India, Talencia LLC, Statestreet HCL Services, OSI Digital, Iprimed Education Solutions, Spericorn, M3bi, Celigo,

Right Answer:
A magic table in SQL Server refers to the special tables created by the system during the execution of triggers. When a trigger is fired, SQL Server creates a copy of the affected rows in these magic tables, named inserted and deleted, allowing you to access the new and old values of the rows being modified.

When you run any command or stored procedure, it is compiled into an execution plan before being executed. This compilation process optimizes the query for performance.

Database Architect/ Designer SQL Server

Ques:- What is the code to create a table having a column named DATE, which takes date in the format dd/mm/yyyy, in SQL Server2000? Or any format of date.

Asked In :- Coviam Technologies, Congruent Solution Inc, Narola Infotech, ANZ Bank, JustDial, Liventus, BookingJini, Udaan, Relinns Technologies, Violet InfoSystems,

Tableau

Ques:- What are best practices for designing effective and user-friendly Tableau visualizations

Asked In :- ProMobi Technologies, Smart Cube India, EY GDS, Amtex Software Solutions, PreludeSys India, EpiSource, Omega Healthcare, Abzooba India Infotech, BridgeLabz Solutions, Relinns Technologies,

Right Answer:
1. Keep it simple: Avoid clutter and focus on key insights.
2. Use appropriate chart types: Choose the right visualization for the data.
3. Maintain consistency: Use uniform colors, fonts, and styles throughout.
4. Optimize for readability: Ensure text is legible and visuals are clear.
5. Use color wisely: Limit the color palette and ensure good contrast.
6. Provide context: Include titles, labels, and tooltips for clarity.
7. Prioritize interactivity: Allow users to filter and drill down for deeper insights.
8. Test with users: Gather feedback to improve usability and effectiveness.

Tableau

Ques:- How do you publish Tableau reports to Tableau Server or Tableau Online

Asked In :- Velocity Software Solutions, Motherson Sumi Infotech Design, C E I India, Smart Cube India, EY GDS, Talencia LLC, Invenger Technologies, Nalsoft, Metrics4 Analytics, Perceptive Analytics,

Right Answer:
To publish Tableau reports to Tableau Server or Tableau Online, follow these steps:

1. Open your Tableau workbook.
2. Click on "Server" in the top menu.
3. Select "Publish Workbook."
4. Sign in to your Tableau Server or Tableau Online account if prompted.
5. Choose the project where you want to publish the workbook.
6. Set the permissions and data sources as needed.
7. Click "Publish" to complete the process.

Tableau

Ques:- What are Tableau dimensions and measures and how do they differ

Asked In :- EdgeVerve Systems, Atidan Technologies, Smart Cube India, PrimeSoft Solutions, Amiti Software Technologies, Abzooba India Infotech, Vayavya Labs, Polestar Solutions, Epicminds Information Technology, Magnaquest,

Right Answer:
In Tableau, dimensions are qualitative data that categorize or segment data, such as names, dates, or geographical locations. Measures are quantitative data that can be measured and aggregated, such as sales figures or quantities. The key difference is that dimensions are used to slice and dice the data, while measures are used for calculations and analysis.

Tableau

Ques:- How do you optimize the performance of a Tableau dashboard

Asked In :- EdgeVerve Systems, Motherson Sumi Infotech Design, StockEdge, EY GDS, Berger Paints, Euromonitor, think-cell, Polestar Solutions, Dynata, k-electric,

Right Answer:
To optimize the performance of a Tableau dashboard, you can:

1. Reduce the number of data points by filtering data at the source.
2. Use extracts instead of live connections when possible.
3. Limit the number of visualizations on a single dashboard.
4. Optimize calculations by using aggregated fields and minimizing complex calculations.
5. Use context filters to reduce the data processed by other filters.
6. Avoid using too many quick filters and high-cardinality fields.
7. Minimize the use of blended data sources.
8. Optimize images and avoid using large files.
9. Use dashboard actions instead of multiple sheets.
10. Regularly monitor performance using Tableau's Performance Recorder.

Tableau

Ques:- What is a calculated field in Tableau and how do you create one

Asked In :- Valued Epistemics, Atidan Technologies, Thorogood, EpiSource, XT Global, Talencia LLC, ESAF Small Finance Bank, IDP Education, Statestreet HCL Services, Euromonitor,

Right Answer:
A calculated field in Tableau is a new field that you create by using a formula to perform calculations on your data. To create one, right-click on a data pane, select "Create Calculated Field," enter a name for the field, write your formula, and click "OK."

Web Development

Ques:- What is AJAX and how does it work

Asked In :- Object Frontier Software, Addweb solutions, Priya Softweb Solutions, TNQ Technologies, Oodles Technologies, Recodem, Novalnet e-Solutions, SWYM, Happiest Minds Technologies Pvt., Keyideas Infotech,

Right Answer:
AJAX (Asynchronous JavaScript and XML) is a web development technique that allows web pages to communicate with a server and update content asynchronously without reloading the entire page. It works by using JavaScript to send requests to the server, which can return data (often in JSON or XML format) that the browser can then use to update the webpage dynamically.

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