Travel Unravel Holidays Interview Questions and Answers

To add a system in domain with DNS error, first resolve the DNS issue and then add the system to the domain.

• Check the DNS settings and ensure they are correct

• Verify that the DNS server is running and accessible

• Flush the DNS cache on the system

• If necessary, add a static DNS entry for the domain controller

• Once the DNS issue is resolved, add the system to the domain as usual

Software testing is the process of evaluating a software application or system to find defects and ensure it meets the specified requirements.

• Software testing involves executing a program or application with the intent of finding errors.

• It ensures that the software meets the functional and non-functional requirements.

• It helps to identify defects early in the development cycle, reducing the cost of fixing them later.

• Types of software testing include unit testing, integration t...read more

Regression testing is the process of testing changes made to a software application to ensure that existing functionality still works as expected.

• It is performed after making changes to the software

• It ensures that existing functionality is not affected by the changes

• It helps to identify any new defects introduced by the changes

• It can be automated to save time and effort

• Examples include testing after bug fixes, new feature additions, and software upgrades

Manual testing is the process of testing software manually without the use of automation tools.

• Manual testing involves the tester executing test cases manually

• It is a time-consuming process but can be more effective in finding certain types of defects

• It requires human observation, analysis, and judgment to determine if the software is functioning correctly

• Examples of manual testing include exploratory testing, regression testing, and acceptance testing

Switches and routers are networking devices used to connect devices and networks together.

• Switches are used to connect devices within a network and direct traffic between them.

• Routers are used to connect different networks together and direct traffic between them.

• Switches operate at the data link layer of the OSI model, while routers operate at the network layer.

• Switches use MAC addresses to forward traffic, while routers use IP addresses.

• Examples of switches include Cisco Ca...read more

MVC is a software architectural pattern that separates an application into three main components: Model, View, and Controller.

• Model represents the data and business logic of the application.

• View is responsible for the presentation layer and user interface.

• Controller handles the user input, interacts with the model and updates the view accordingly.

• MVC promotes separation of concerns, code reusability, and maintainability.

• Example: In an e-commerce website, the model would handl...read more

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• Firewalls can be hardware or software-based

• They can be configured to block or allow traffic based on IP addresses, ports, protocols, and other criteria

• Firewalls can be set up to create a DMZ (demilitarized zone) to separate public-facing servers from internal networks

• Examples of firewall software include Windows Firewall, iptables, and...read more

A cursor in DB is a database object that allows traversal over the rows of a result set.

• A cursor is used to retrieve and manipulate data row by row.

• It provides a way to iterate over the result set of a query.

• Cursors can be used to perform operations like fetching, updating, and deleting data.

• They can be forward-only, scrollable, or dynamic depending on the requirements.

• Example: DECLARE cursor_name CURSOR FOR SELECT * FROM table_name;

• Example: OPEN cursor_name; FETCH NEXT FROM ...read more