diff --git a/02-nodejs/authenticationServer.js b/02-nodejs/authenticationServer.js
index c5278b94..06cd559e 100644
--- a/02-nodejs/authenticationServer.js
+++ b/02-nodejs/authenticationServer.js
@@ -30,8 +30,87 @@
  */
 
 const express = require("express")
+const bodyParser = require("body-parser");
 const PORT = 3000;
 const app = express();
 // write your logic here, DONT WRITE app.listen(3000) when you're running tests, the tests will automatically start the server
 
+app.use(bodyParser.json());
+var arr = [];
+
+app.post('/signup', (req, res) => {
+  var objectBody = req.body;
+
+  for(let i=0;i<arr.length;i++){
+    if(arr[i].username == objectBody.username){
+      res.status(400).send("Username already exists");
+      break;
+    }
+  }
+
+  arr.push(objectBody);
+  res.status(201).send("Account created successfully");
+})
+
+app.post('/login', (req, res) => {
+  var inputBody = req.body;
+  var checkuser = null;
+
+  for(let i=0;i<arr.length;i++){
+    if(arr[i].username == inputBody.username && arr[i].password == inputBody.password){
+      checkuser = arr[i];
+      break;
+    }
+  }
+
+  if(checkuser){
+    res.status(200).json({
+      firstname: checkuser.firstname,
+      lastname: checkuser.lastname,
+      email: checkuser.email
+    })
+  }
+  else{
+    res.status(401).send("Invalid Credentials");
+  }
+})
+
+app.get('/data', (req, res) => {
+  var username = req.headers.username;
+  var password = req.headers.password;
+  var check = false;
+
+  for(let i=0;i<arr.length;i++){
+    if(arr[i].username == username && arr[i].password == password){
+      check = true;
+      break;
+    }
+  }
+
+  if(check){
+    var returnedArr = [];
+    for(let i=0;i<arr.length;i++){
+      returnedArr.push({
+        firstname: arr[i].firstname,
+        lastname: arr[i].lastname,
+        email: arr[i].email
+      })
+    }
+
+    res.status(200).json(returnedArr)
+  }
+
+  else{
+    res.status(401).send("Failed");
+  }
+})
+
+app.all('*', (req, res) => {
+  res.status(404);
+})
+
+app.listen(PORT, () => {
+  console.log("Autentication server App listening on port");
+})
+
 module.exports = app;
diff --git a/02-nodejs/fileServer.js b/02-nodejs/fileServer.js
index 82e7719b..fb896803 100644
--- a/02-nodejs/fileServer.js
+++ b/02-nodejs/fileServer.js
@@ -20,6 +20,47 @@ const express = require('express');
 const fs = require('fs');
 const path = require('path');
 const app = express();
+const port = 3000;
 
+app.get('/files', (req, res) => {
+  const folderPath = './files/';
+  const jsonArray = [];
+
+  fs.readdir(folderPath, (err, files) => {
+    if(err){
+      res.status(404);
+      return;
+    }
+
+    files.forEach((file) => {
+      const jsonObject = {
+        "name": file,
+      };
+
+      jsonArray.push(jsonObject);
+    })
+
+    res.status(200).json(jsonArray);
+  })
+});
+
+app.get('/file/:filename', (req, res) => {
+  const filepath = path.join(__dirname, './files/', req.params.filename);
+
+  fs.readFile(filepath, 'utf8', (err, data) => {
+    if (err) {
+      return res.status(404).send('File not found');
+    }
+    res.send(data);
+  });
+});
+
+app.all('*', (req, res) => {
+  res.status(404).send('Route not found');
+})
+
+app.listen(port, function(){
+  console.log(`Example app listening on server port $port`);
+});
 
 module.exports = app;
diff --git a/02-nodejs/todoServer.js b/02-nodejs/todoServer.js
index cffc7d60..d8df51dc 100644
--- a/02-nodejs/todoServer.js
+++ b/02-nodejs/todoServer.js
@@ -41,9 +41,103 @@
  */
 const express = require('express');
 const bodyParser = require('body-parser');
+const port = 3000;
 
 const app = express();
 
+var listOfItems = [];
+
 app.use(bodyParser.json());
 
+app.get('/todos', (req, res) => {
+  res.status(200).json(listOfItems);
+});
+
+app.get('/todos/:id', (req, res) => {
+  var idOfItem = req.params.id;
+  var check = null;
+
+  for(let i=0;i<listOfItems.length;i++){
+    if(idOfItem == listOfItems[i].id){
+      check = listOfItems[i];
+      break;
+    }
+  }
+
+  if(check){
+    res.status(200).json({
+      "title": check.title,
+      "completed": check.completed,
+      "description": check.description
+    });
+  }
+
+  else{
+    res.status(404).send("Item not found");
+  }
+})
+
+app.post('/todos', (req, res) => {
+  var newTodoItem = {
+    id: Math.floor(Math.random() * 1000000),
+    title: req.body.title,
+    completed: req.body.completed,
+    description: req.body.description
+  };
+
+  listOfItems.push(newTodoItem);
+  res.status(200);
+});
+
+app.put('/todos/:id', (req, res) => {
+  var found = null;
+  var idOfItem = req.params.id;
+
+  for(let i=0;i<listOfItems.length;i++){
+    if(idOfItem == listOfItems[i].id){
+      found = listOfItems[i];
+      break;
+    }
+  }
+
+  if(found){
+    var updatedObject = {
+      title: req.body.title,
+      description: req.body.description,
+      completed: req.body.completed
+    };
+
+    listOfItems.push(updatedObject);
+    res.status(200).send("Successful updation of data");
+  }
+
+  else{
+    res.status(404).send("Id not found");
+  }
+});
+
+app.delete('/todos/:id', (req, res) => {
+  var idToDelete = req.params.id;
+  var len = listOfItems.length;
+
+  for(let i=0;i<listOfItems.length;i++){
+    if(idToDelete == listOfItems[i].id){
+      listOfItems.splice(i, 1);
+      res.status(200).send("Deletion of data was done successfully");
+    }
+  }
+
+  if(len == listOfItems.length){
+    res.status(404).send("Id not found");
+  }
+});
+
+app.listen(port, () => {
+  console.log(`todo server listening on port 3000`);
+});
+
+app.all('*', (req, res) => {
+  res.status(404);
+})
+
 module.exports = app;