IT Developer Interview Questions and Answers

Static IP is a fixed IP address assigned to a device, while dynamic IP is one that changes each time a device connects to a network.

• Static IP remains the same every time the device connects to the network

• Dynamic IP changes each time the device connects to the network

• Static IP is typically used for servers, while dynamic IP is common for personal devices

• Example: A home router may have a dynamic IP assigned by the ISP, while a web server may have a static IP for consistent acce...read more

Delete command removes rows from a table, while drop command removes entire table structure.

• DELETE command is used to remove specific rows from a table based on a condition

• DROP command is used to remove an entire table along with its structure

• DELETE command can be rolled back using transactions, while DROP command cannot be rolled back

• Example: DELETE FROM table_name WHERE condition; DROP TABLE table_name;

REST API is a set of rules and conventions for building and interacting with web services using HTTP methods.

• REST stands for Representational State Transfer

• Uses standard HTTP methods like GET, POST, PUT, DELETE

• Data is transferred in JSON or XML format

• Stateless communication between client and server

• Example: GET request to retrieve data from a server

Copy maps are data structures used to create a shallow copy of an existing map.

• Copy maps are commonly used in programming languages like JavaScript and Go.

• They allow you to duplicate the key-value pairs of a map into a new map.

• The new map shares the same references to the values as the original map.

• If any of the values in the original map are modified, the corresponding values in the copy map will also be modified.

• Copy maps are useful when you want to create a new map with th...read more