Essar Group Interview Questions and Answers

Call by value and call by reference are two ways of passing arguments to a function.

• Call by value passes a copy of the value to the function, while call by reference passes a reference to the original value.

• In call by value, changes made to the parameter inside the function do not affect the original value, while in call by reference, changes made to the parameter inside the function affect the original value.

• Example of call by value: void swap(int a, int b) { int temp = a; a...read more

Call by reference is used to pass the memory address of a variable to a function.

• Allows modification of the original variable

• Saves memory by not creating a copy of the variable

• Used for large data structures like arrays

• Example: void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }

Call by value passes a copy of the value to the function, while call by reference passes a reference to the original value.

• Call by value creates a new copy of the variable, while call by reference uses the original variable.

• Call by value does not modify the original variable, while call by reference can modify the original variable.

• Call by value is used for simple data types like int, float, etc., while call by reference is used for complex data types like arrays, structures,...read more

Yes, we can find the IP address of a system.

• Use command prompt and type 'ipconfig' to find the IP address of the system.

• Alternatively, use online tools like 'WhatIsMyIP' or 'IP Lookup' to find the IP address.

• IP addresses can also be found in the network settings of the system.

Static refers to a variable or method that belongs to a class rather than an instance of that class.

• Static variables are shared across all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables

• Static import is used to import static members of a class

Network operating system architecture involves the design and implementation of software that manages network resources and communication.

• Network operating systems are designed to facilitate communication and resource sharing among multiple computers in a network.

• They typically include features such as file sharing, printer sharing, user authentication, and security protocols.

• Examples of network operating systems include Windows Server, Linux-based systems like Ubuntu Server,...read more