Analytics India Magazine Interview Questions and Answers

DNS stands for Domain Name System. It is a system that translates domain names into IP addresses.

• DNS is like a phonebook for the internet

• It helps to locate websites by translating domain names into IP addresses

• DNS servers store information about domain names and their corresponding IP addresses

• DNS resolution can be recursive or iterative

• Examples of DNS servers include Google DNS and OpenDNS

Network device configuration involves setting up IP addresses, subnet masks, default gateways, and DNS servers.

• Access the device's web interface or command line interface

• Identify the device's IP address and login credentials

• Configure IP address, subnet mask, default gateway, and DNS servers

• Save and apply the changes

• Test the network connectivity

MVC is a design pattern for organizing code in separate layers, while Hibernate is an ORM tool for mapping Java objects to database tables.

• MVC stands for Model-View-Controller and is used to separate the application into three interconnected components: the model (data), the view (UI), and the controller (logic).

• Hibernate is an ORM (Object-Relational Mapping) tool that maps Java objects to database tables, simplifying database interactions by abstracting the SQL queries.

• MVC i...read more

Virtualization is the creation of a virtual version of something, such as an operating system, a server, a storage device, or network resources.

• Virtualization allows multiple operating systems to run on a single physical machine

• It enables better utilization of hardware resources

• Virtualization can improve disaster recovery and backup processes

• Examples include VMware, Hyper-V, and VirtualBox

The 'this' keyword in Java refers to the current instance of a class.

• Used to refer to instance variables or methods within a class.

• Avoids naming conflicts between instance variables and local variables.

• Can be used to pass the current object as a parameter to another method.

Direct PCB layout involves placing components and routing traces directly on the board without using a schematic.

• Start by placing the components on the board in a logical and organized manner.

• Route the traces between the components, taking care to avoid crossing over each other.

• Use ground planes and power planes to improve signal integrity and reduce noise.

• Consider the size and shape of the board, as well as any mechanical constraints.

• Perform design rule checks to ensure the ...read more

Session and cookies are both used to store data on the client side, but session is stored on the server while cookies are stored on the client side.

• Session data is stored on the server while cookie data is stored on the client side

• Session data is deleted when the user closes the browser while cookie data can be stored for a longer period of time

• Session data is more secure than cookie data as it is not accessible by the client side

• Cookies can be used to store user preferences ...read more