70 Catalystone solutions Interview Questions and Answers

Jsp

Ques:- How to implement a thread-safe jsp page?

Asked In :- Busy Infotech, A Wabtec Company, lti, jsi telecom, catalystone solutions, tradebyte software gmbh,

Comments

Admin May 17, 2020

isThreadSafe sattes that wheather jsp engine can pass
multiple req simultaneously to the page . a value set to
true(default) indicates that a new thread is started and
therfore request are handled simultaneously . ise the jsp
engine can send multiple concurent lient request to the jsp
page . value set to false indicates that jsp engine sends
lient request one at a time to the jsp page .
It is recommended to always use the value tue for the is
threadsafe page directive and handled multithread issue
by avoiding jsp declaration and ensures that all object
used by the page are thread safe.
Syntex
<% page isthreadSafe="true"%>

Admin May 17, 2020

just add the directive <%@ page isThreadSafe="false" %>
with the jsp page..

JAVA Project Leader/ Project Manager

Ques:- Are the Struts tags XHTML compliant ?

Asked In :- catalystone solutions,

JAVA Software Developer/ Programmer

Ques:- How to call static method in Java?

Asked In :- xebia, catalystone solutions, amiti software technologies pvt. ltd.,

JAVA Team Lead/ Tech Lead

Ques:- Have you created database tables?

Asked In :- Intelizign, Innovatia Inc, catalystone solutions, vassar labs, Mallow Technologies,

Django Python

Ques:- What id CRUD ?

Asked In :- AppSquadz, Sankey Solutions, Utthunga, Konnect Insights, Fusionex, TP1, Neominds Software, Elexes, Zerone Technologies, Alphind Software Solutions,

Right Answer:
CRUD stands for Create, Read, Update, and Delete. It refers to the four basic operations that can be performed on data in a database.

Django Python

Ques:- How do you count the occurrences of each item present in the list without explicitly mentioning them ?

Asked In :- E2E Research, Zentron Labs, Twilio, WAEC, Posist Technologies, Addverb Technologies, capillary technologies, zaloni, tiger analytics, ntp,

Right Answer:
You can use the `collections.Counter` class to count the occurrences of each item in a list. Here's how you can do it:

```python
from collections import Counter

my_list = ['apple', 'banana', 'apple', 'orange', 'banana', 'apple']
count = Counter(my_list)
print(count)
```

Python

Ques:- How can the ternary operators be used in python?

Asked In :- Motherson Sumi Infotech Design, InRhythm Solutions, ThinkSys Software, de facto infotech, Ojas Innovative Technologies, Ideas2IT, Commutatus, Beautiful Code, ConveGenius, Rhapsody Technologies,

Comments

Admin May 17, 2020

The ternary operator is the operator that is used to show the conditional statements. This consists of the true or false values with a statement that has to be evaluated for it. The operator will be given as:
[on_true] if [expression] else [on_false]
x, y = 25, 50
big = x if x < y else y
This is the lowest priority operator that is used in making a decision that is based on the values of true or false. The expression gets evaluated like if x<y else y, in this case if x<y is true then the value is returned as big=x and if it is incorrect then big=y will be sent as a result.

Python

Ques:- What is the return type of input() function?

Asked In :- Netaxis IT Solutions (p), Maventic, Argil DX, Cloud Analogy, iLeap, MSC Technologies, ThiDiff Technologies, Noom, iks health, jasmin infotech pvt ltd,

Comments

Admin Feb 2, 2020

Input() function reads the end user input in the program.
It returns the input values in String format.

Python Django

Ques:- How you are deploying applicaiton with apache?

Asked In :- E2E Research, Solugenix India, Milliman India, DIGICOMM Semiconductor, Young Globes, Posist Technologies, Cynet Systems, CodeStore, Avalon Technologies, e-Yantra,

Right Answer:
To deploy a Django application with Apache, follow these steps:

1. **Install Apache and mod_wsgi**: Ensure Apache and the mod_wsgi module are installed on your server.

2. **Configure Apache**: Create a new configuration file for your Django project in the Apache sites-available directory. For example, `/etc/apache2/sites-available/myproject.conf`.

3. **Add the following configuration**:
```apache
<VirtualHost *:80>
ServerName yourdomain.com
ServerAlias www.yourdomain.com
DocumentRoot /path/to/your/project

WSGIDaemonProcess myproject python-home=/path/to/your/venv python-path=/path/to/your/project
WSGIProcessGroup myproject
WSGIScriptAlias / /path/to/your/project/myproject.wsgi

<Directory /path/to/your/project>
<Files myproject.wsgi>
Require all granted
</

Database Architect/ Designer SQL Server

Ques:- What is Extended Stored Procedure in SQL Server 2000?

Asked In :- sciative, Pi Techniques, MaxVal-IP Services, Ginni Systems, Innofied Solution, Simeio, Glenwood Systems, Mechlin Technologies, Onebill software, Carisma Solutions,

Right Answer:
An Extended Stored Procedure in SQL Server 2000 is a special type of stored procedure that allows you to execute external programs or functions written in languages like C or C++. It enables SQL Server to interact with the operating system and perform tasks that are not possible with standard T-SQL.

Project Engineer sql

Ques:- Describe the properties of a relational table?

Asked In :- Target Integration, Yudiz Solutions, Helical It Solutions, Gem Software Solutions, Vinove Software and Services, Visier, Kriti, VCNR Technologies (India), RCKR Software, aspire systems,

Right Answer:
A relational table has the following properties:

1. **Rows and Columns**: Data is organized in rows (records) and columns (attributes).
2. **Unique Rows**: Each row must be unique, often identified by a primary key.
3. **Atomic Values**: Each cell contains atomic (indivisible) values.
4. **Consistent Data Types**: Each column has a specific data type, and all values in that column must conform to it.
5. **Order Independence**: The order of rows and columns does not affect the data's meaning.
6. **Foreign Keys**: Relationships between tables are established using foreign keys.

sql

Ques:- What would you do if you misunderstood an important communication on the job?

Asked In :- Indocosmo Systems, Digital Nirvana Information Systems (I), Waffor, EY GDS, de facto infotech, Wondersoft, InSync Analytics, PromptCloud, 8KMiles Software Services, iauro systems,

Software Development Engineer SQL Server

Ques:- Can you give an example of Stored Procedure?

Asked In :- MBR Informatics, Code Insight Technologies, Hitachi Solutions India, HARITA TECHSERV, Siemens Healthineers, KFT, CloudThat, VuNet Systems, Real Time Data Services (P), Corecard Software,

Right Answer:
```sql
CREATE PROCEDURE GetEmployeeByID
@EmployeeID INT
AS
BEGIN
SELECT * FROM Employees
WHERE EmployeeID = @EmployeeID;
END;
```

Data Warehouse Developer SQL Server

Ques:- What does the Log Reader agent in SQL Server 2005 replication do?

Asked In :- DecisionTree Analytics and Services, Smart Cube India, Innodata, Mind Infotech, Graphene, TechMojo Solutions, Smart Joules, SmartPoint Technologies, Melio Systems, Statista,

Right Answer:
The Log Reader agent in SQL Server 2005 replication reads the transaction log of the published database to identify and capture changes (inserts, updates, deletes) that need to be replicated to the subscribers.

Web Development

Ques:- What is the difference between class and ID in CSS

Asked In :- Unyscape Infocom Pvt. Ltd., DREAMORBIT SOFTECH PVT, Object Frontier Software, Addweb solutions, Walstar Technologies, CakeSoft Technologies, Radicle Software, Spectra Medix India, Infostretch solutions, Srijan Technologies,

Right Answer:
In CSS, a class is defined with a dot (.) and can be applied to multiple elements, while an ID is defined with a hash (#) and should be unique to a single element on a page.

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.

Web Development

Ques:- What are JavaScript closures and how do they work

Asked In :- Vinove Software & Services Pvt Ltd, Trigent Software, Codiant Software Technologies, Born Commerce, Oodles Technologies, Radicle Software, SPARX IT SOLUTIONS, Energytech Global, Adnate IT Solutions, Muvi Entertainment,

Right Answer:
JavaScript closures are functions that remember their outer scope even when the function is executed outside that scope. They work by capturing the variables from their surrounding environment, allowing access to those variables even after the outer function has finished executing. This is useful for data encapsulation and maintaining state in asynchronous programming.

Web Development

Ques:- What is the difference between inline inline block and block elements

Asked In :- Vinove Software & Services Pvt Ltd, Queppelin Technology Solutions, Walkover Web Solutions, CakeSoft Technologies, Recodem, Energytech Global, Incise Infotech, First Zen, Angular Minds, CIGNEX Datamatics Technologies,

Right Answer:
Block elements take up the full width available and start on a new line (e.g., `<div>`, `<h1>`). Inline elements only take up as much width as necessary and do not start on a new line (e.g., `<span>`, `<a>`). Inline-block elements are similar to inline elements but can have width and height set, and they respect margins and padding (e.g., `<img>`, `<button>`).

Web Development

Ques:- What are promises and async await in JavaScript

Asked In :- Unyscape Infocom Pvt. Ltd., Medvarsity Online, Ziffity Solutions, LiteBreeze Infotech, CakeSoft Technologies, Sun Technology Integrators, Happiest Minds Technologies Pvt., Ray Business Technologies, XIPHIAS Software Technologies, Spark Infosys,

Right Answer:
Promises in JavaScript are objects that represent the eventual completion (or failure) of an asynchronous operation and its resulting value. They allow you to handle asynchronous code more easily by providing methods like `.then()` for success and `.catch()` for errors.

`async` and `await` are syntactic sugar built on top of promises. An `async` function always returns a promise, and within an `async` function, you can use `await` to pause execution until a promise is resolved, making the code easier to read and write as if it were synchronous.

Lead Testing Engineer Quality Assurance

Ques:- Need to shut down network connectivity mid tansaction. How to do this programmatically via windows interface?

Asked In :- CakeSoft Technologies, Sumedha Softech, Proseon Technologies, AvenDATA GmbH, Atlas Honda, DIC India, Fluor Daniel, Global Step, Sterlite Technologies, TUV SUD,

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