diff --git a/02-nodejs/authenticationServer.js b/02-nodejs/authenticationServer.js
index c5278b94..42a3ea8b 100644
--- a/02-nodejs/authenticationServer.js
+++ b/02-nodejs/authenticationServer.js
@@ -30,8 +30,91 @@
  */
 
 const express = require("express")
+var bodyParser = require('body-parser');
+
 const PORT = 3000;
 const app = express();
+
+app.use(bodyParser.json());
+
+const users = [];
+
+app.post('/signup', (req, res) => {
+
+    if (users.length > 0) {
+
+        const filteredUsers = users.filter(item => item.username === req.body.username);
+
+        if (filteredUsers.length > 0) {
+            res.status(401).send("Bad Request")
+        }
+        else {
+            users.push({
+                id: users.length,
+                username: req.body.username,
+                password: req.body.password,
+                firstName: req.body.firstName,
+                lastName: req.body.lastName
+            });
+
+            res.status(201).send("Created")
+        }
+    }
+    else {
+        users.push({
+            id: users.length,
+            username: req.body.username,
+            password: req.body.password,
+            firstName: req.body.firstName,
+            lastName: req.body.lastName
+        });
+
+        res.status(201).send("Created")
+    }
+});
+
+app.post("/login", (req, res) => {
+
+    const { username, password } = req.body;
+
+    const loggedInUser = users.filter(item => item.username === username && item.password === password);
+
+    if (loggedInUser.length > 0) {
+        res.status(200).json({
+            token: loggedInUser?.[0].id
+        });
+    }
+    else {
+        res.status(401).send("Unauthorized");
+    }
+});
+
+app.get("/data", (req, res) => {
+
+    const { username, password } = req.headers;
+
+    const filteredUsers = users.filter(item => item.username === username && item.password === password);
+
+    if (filteredUsers.length > 0) {
+        res.status(200).json({
+            users: filteredUsers.map(item => ({
+                firstName: item.firstName,
+                lastName: item.lastName,
+                id: item.id
+            }))
+        });
+    }
+    else {
+        res.status(401).send("Unauthorized");
+    }
+
+});
+
+app.use((req, res) => {
+    res.status(404).send("404 Not Found!");
+});
+
 // write your logic here, DONT WRITE app.listen(3000) when you're running tests, the tests will automatically start the server
+app.listen(PORT);
 
 module.exports = app;
diff --git a/02-nodejs/fileServer.js b/02-nodejs/fileServer.js
index 82e7719b..736d4059 100644
--- a/02-nodejs/fileServer.js
+++ b/02-nodejs/fileServer.js
@@ -21,5 +21,50 @@ const fs = require('fs');
 const path = require('path');
 const app = express();
 
+app.get("/files", (req, res) => {
+
+    const reqPath = req.path;
+
+    const dirPath = path.join(__dirname, reqPath);
+
+    fs.readdir(dirPath, (err, files) => {
+
+        if (err) {
+            res.status(401).send("unauthorized");
+        }
+        else {
+            if (files.length > 0) {
+                res.status(200).json({
+                    files
+                });
+            }
+            else {
+                res.status(401).send("files Not Exist");
+            }
+        }
+    });
+});
+
+app.get('/files/:fileName', (req, res) => {
+
+    const reqPath = req.path;
+
+    const filePath = path.join(__dirname, reqPath);
+
+    fs.readFile(filePath, 'utf-8', (err, data) => {
+        if (err) {
+            res.status(400).send("File not found");
+        }
+        else {
+            res.status(200).send(data);
+        }
+    });
+});
+
+app.all("*", (req, res) => {
+    res.status(404).send("Route Not Found!");
+});
+
+app.listen(3000);
 
 module.exports = app;
diff --git a/02-nodejs/package-lock.json b/02-nodejs/package-lock.json
index b13088b7..7c69e0c5 100644
--- a/02-nodejs/package-lock.json
+++ b/02-nodejs/package-lock.json
@@ -9,7 +9,9 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
+        "body-parser": "^1.20.2",
         "express": "^4.18.2",
+        "nodemon": "^3.0.2",
         "uuid": "^9.0.0"
       },
       "devDependencies": {
@@ -1077,6 +1079,11 @@
       "integrity": "sha512-iO9ZQHkZxHn4mSakYV0vFHAVDyEOIJQrV2uZ06HxEPcx+mt8swXoZHIbaaJ2crJYFfErySgktuTZ3BeLz+XmFA==",
       "dev": true
     },
+    "node_modules/abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
+    },
     "node_modules/accepts": {
       "version": "1.3.8",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
@@ -1132,7 +1139,6 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
       "integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==",
-      "dev": true,
       "dependencies": {
         "normalize-path": "^3.0.0",
         "picomatch": "^2.0.4"
@@ -1261,16 +1267,23 @@
     "node_modules/balanced-match": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
-      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
-      "dev": true
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+    },
+    "node_modules/binary-extensions": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.2.0.tgz",
+      "integrity": "sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA==",
+      "engines": {
+        "node": ">=8"
+      }
     },
     "node_modules/body-parser": {
-      "version": "1.20.1",
-      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.1.tgz",
-      "integrity": "sha512-jWi7abTbYwajOytWCQc37VulmWiRae5RyTpaCyDcS5/lMdtwSz5lOpDE67srw/HYe35f1z3fDQw+3txg7gNtWw==",
+      "version": "1.20.2",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.2.tgz",
+      "integrity": "sha512-ml9pReCu3M61kGlqoTm2umSXTlRTuGTx0bfYj+uIUKKYycG5NtSbeetV3faSU6R7ajOPw0g/J1PvK4qNy7s5bA==",
       "dependencies": {
         "bytes": "3.1.2",
-        "content-type": "~1.0.4",
+        "content-type": "~1.0.5",
         "debug": "2.6.9",
         "depd": "2.0.0",
         "destroy": "1.2.0",
@@ -1278,7 +1291,7 @@
         "iconv-lite": "0.4.24",
         "on-finished": "2.4.1",
         "qs": "6.11.0",
-        "raw-body": "2.5.1",
+        "raw-body": "2.5.2",
         "type-is": "~1.6.18",
         "unpipe": "1.0.0"
       },
@@ -1318,7 +1331,6 @@
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
       "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -1328,7 +1340,6 @@
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
       "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
-      "dev": true,
       "dependencies": {
         "fill-range": "^7.0.1"
       },
@@ -1466,6 +1477,32 @@
         "node": ">=10"
       }
     },
+    "node_modules/chokidar": {
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.3.tgz",
+      "integrity": "sha512-Dr3sfKRP6oTcjf2JmUmFJfeVMvXBdegxB0iVQ5eb2V10uFJUCAS8OByZdVAyVb8xXNz3GjjTgj9kLWsZTqE6kw==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://paulmillr.com/funding/"
+        }
+      ],
+      "dependencies": {
+        "anymatch": "~3.1.2",
+        "braces": "~3.0.2",
+        "glob-parent": "~5.1.2",
+        "is-binary-path": "~2.1.0",
+        "is-glob": "~4.0.1",
+        "normalize-path": "~3.0.0",
+        "readdirp": "~3.6.0"
+      },
+      "engines": {
+        "node": ">= 8.10.0"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.2"
+      }
+    },
     "node_modules/ci-info": {
       "version": "3.8.0",
       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-3.8.0.tgz",
@@ -1556,8 +1593,7 @@
     "node_modules/concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
-      "dev": true
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
     },
     "node_modules/content-disposition": {
       "version": "0.5.4",
@@ -1621,7 +1657,6 @@
       "version": "4.3.4",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
       "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
-      "dev": true,
       "dependencies": {
         "ms": "2.1.2"
       },
@@ -1882,6 +1917,29 @@
         "node": ">= 0.10.0"
       }
     },
+    "node_modules/express/node_modules/body-parser": {
+      "version": "1.20.1",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.1.tgz",
+      "integrity": "sha512-jWi7abTbYwajOytWCQc37VulmWiRae5RyTpaCyDcS5/lMdtwSz5lOpDE67srw/HYe35f1z3fDQw+3txg7gNtWw==",
+      "dependencies": {
+        "bytes": "3.1.2",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "2.0.0",
+        "destroy": "1.2.0",
+        "http-errors": "2.0.0",
+        "iconv-lite": "0.4.24",
+        "on-finished": "2.4.1",
+        "qs": "6.11.0",
+        "raw-body": "2.5.1",
+        "type-is": "~1.6.18",
+        "unpipe": "1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8",
+        "npm": "1.2.8000 || >= 1.4.16"
+      }
+    },
     "node_modules/express/node_modules/debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -1909,6 +1967,20 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/express/node_modules/raw-body": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.1.tgz",
+      "integrity": "sha512-qqJBtEyVgS0ZmPGdCFPWJ3FreoqvG4MVQln/kCgF7Olq95IbOp0/BWyMwbdtn4VTvkM8Y7khCQ2Xgk/tcrCXig==",
+      "dependencies": {
+        "bytes": "3.1.2",
+        "http-errors": "2.0.0",
+        "iconv-lite": "0.4.24",
+        "unpipe": "1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -1934,7 +2006,6 @@
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
       "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
-      "dev": true,
       "dependencies": {
         "to-regex-range": "^5.0.1"
       },
@@ -2040,7 +2111,6 @@
       "version": "2.3.2",
       "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
       "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
-      "dev": true,
       "hasInstallScript": true,
       "optional": true,
       "os": [
@@ -2128,6 +2198,17 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/glob-parent": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
+      "integrity": "sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==",
+      "dependencies": {
+        "is-glob": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/globals": {
       "version": "11.12.0",
       "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
@@ -2235,6 +2316,11 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/ignore-by-default": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/ignore-by-default/-/ignore-by-default-1.0.1.tgz",
+      "integrity": "sha512-Ius2VYcGNk7T90CppJqcIkS5ooHUZyIQK+ClZfMfMNFEF9VSE73Fq+906u/CWu92x4gzZMWOwfFYckPObzdEbA=="
+    },
     "node_modules/import-local": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/import-local/-/import-local-3.1.0.tgz",
@@ -2292,6 +2378,17 @@
       "integrity": "sha512-zz06S8t0ozoDXMG+ube26zeCTNXcKIPJZJi8hBrF4idCLms4CG9QtK7qBl1boi5ODzFpjswb5JPmHCbMpjaYzg==",
       "dev": true
     },
+    "node_modules/is-binary-path": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
+      "integrity": "sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==",
+      "dependencies": {
+        "binary-extensions": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-core-module": {
       "version": "2.12.1",
       "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.12.1.tgz",
@@ -2304,6 +2401,14 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-extglob": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
+      "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/is-fullwidth-code-point": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
@@ -2322,11 +2427,21 @@
         "node": ">=6"
       }
     },
+    "node_modules/is-glob": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
+      "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
+      "dependencies": {
+        "is-extglob": "^2.1.1"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/is-number": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
       "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
-      "dev": true,
       "engines": {
         "node": ">=0.12.0"
       }
@@ -3208,7 +3323,6 @@
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
       "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
-      "dev": true,
       "dependencies": {
         "brace-expansion": "^1.1.7"
       },
@@ -3219,8 +3333,7 @@
     "node_modules/ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-      "dev": true
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "node_modules/natural-compare": {
       "version": "1.4.0",
@@ -3248,11 +3361,100 @@
       "integrity": "sha512-QzsYKWhXTWx8h1kIvqfnC++o0pEmpRQA/aenALsL2F4pqNVr7YzcdMlDij5WBnwftRbJCNJL/O7zdKaxKPHqgQ==",
       "dev": true
     },
+    "node_modules/nodemon": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/nodemon/-/nodemon-3.0.2.tgz",
+      "integrity": "sha512-9qIN2LNTrEzpOPBaWHTm4Asy1LxXLSickZStAQ4IZe7zsoIpD/A7LWxhZV3t4Zu352uBcqVnRsDXSMR2Sc3lTA==",
+      "dependencies": {
+        "chokidar": "^3.5.2",
+        "debug": "^4",
+        "ignore-by-default": "^1.0.1",
+        "minimatch": "^3.1.2",
+        "pstree.remy": "^1.1.8",
+        "semver": "^7.5.3",
+        "simple-update-notifier": "^2.0.0",
+        "supports-color": "^5.5.0",
+        "touch": "^3.1.0",
+        "undefsafe": "^2.0.5"
+      },
+      "bin": {
+        "nodemon": "bin/nodemon.js"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/nodemon"
+      }
+    },
+    "node_modules/nodemon/node_modules/has-flag": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha512-sKJf1+ceQBr4SMkvQnBDNDtf4TXpVhVGateu0t918bl30FnbE2m4vNLX+VWe/dpjlb+HugGYzW7uQXH98HPEYw==",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/nodemon/node_modules/lru-cache": {
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+      "integrity": "sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==",
+      "requires": {
+        "binary-extensions": "^2.0.0"
+      }
+    },
     "is-core-module": {
       "version": "2.12.1",
       "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.12.1.tgz",
@@ -6037,6 +6378,11 @@
         "has": "^1.0.3"
       }
     },
+    "is-extglob": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
+      "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ=="
+    },
     "is-fullwidth-code-point": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
@@ -6049,11 +6395,18 @@
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       "dev": true
     },
+    "is-glob": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
+      "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
+      "requires": {
+        "is-extglob": "^2.1.1"
+      }
+    },
     "is-number": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
-      "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
-      "dev": true
+      "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng=="
     },
     "is-stream": {
       "version": "2.0.1",
@@ -6721,7 +7074,6 @@
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
       "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
-      "dev": true,
       "requires": {
         "brace-expansion": "^1.1.7"
       }
@@ -6729,8 +7081,7 @@
     "ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-      "dev": true
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "natural-compare": {
       "version": "1.4.0",
@@ -6755,11 +7106,71 @@
       "integrity": "sha512-QzsYKWhXTWx8h1kIvqfnC++o0pEmpRQA/aenALsL2F4pqNVr7YzcdMlDij5WBnwftRbJCNJL/O7zdKaxKPHqgQ==",
       "dev": true
     },
+    "nodemon": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/nodemon/-/nodemon-3.0.2.tgz",
+      "integrity": "sha512-9qIN2LNTrEzpOPBaWHTm4Asy1LxXLSickZStAQ4IZe7zsoIpD/A7LWxhZV3t4Zu352uBcqVnRsDXSMR2Sc3lTA==",
+      "requires": {
+        "chokidar": "^3.5.2",
+        "debug": "^4",
+        "ignore-by-default": "^1.0.1",
+        "minimatch": "^3.1.2",
+        "pstree.remy": "^1.1.8",
+        "semver": "^7.5.3",
+        "simple-update-notifier": "^2.0.0",
+        "supports-color": "^5.5.0",
+        "touch": "^3.1.0",
+        "undefsafe": "^2.0.5"
+      },
+      "dependencies": {
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha512-sKJf1+ceQBr4SMkvQnBDNDtf4TXpVhVGateu0t918bl30FnbE2m4vNLX+VWe/dpjlb+HugGYzW7uQXH98HPEYw=="
+        },
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
+        "semver": {
+          "version": "7.5.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+          "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+        }
+      }
+    },
+    "nopt": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/nopt/-/nopt-1.0.10.tgz",
+      "integrity": "sha512-NWmpvLSqUrgrAC9HCuxEvb+PSloHpqVu+FqcO4eeF2h5qYRhA7ev6KvelyQAKtegUbC6RypJnlEOhd8vloNKYg==",
+      "requires": {
+        "abbrev": "1"
+      }
+    },
     "normalize-path": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
-      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
-      "dev": true
+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA=="
     },
     "npm-run-path": {
       "version": "4.0.1",
@@ -6891,8 +7302,7 @@
     "picomatch": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
-      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
-      "dev": true
+      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="
     },
     "pirates": {
       "version": "4.0.5",
@@ -6947,6 +7357,11 @@
         "ipaddr.js": "1.9.1"
       }
     },
+    "pstree.remy": {
+      "version": "1.1.8",
+      "resolved": "https://registry.npmjs.org/pstree.remy/-/pstree.remy-1.1.8.tgz",
+      "integrity": "sha512-77DZwxQmxKnu3aR542U+X8FypNzbfJ+C5XQDk3uWjWxn6151aIMGthWYRXTqT1E5oJvg+ljaa2OJi+VfvCOQ8w=="
+    },
     "pure-rand": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/pure-rand/-/pure-rand-6.0.2.tgz",
@@ -6968,9 +7383,9 @@
       "integrity": "sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg=="
     },
     "raw-body": {
-      "version": "2.5.1",
-      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.1.tgz",
-      "integrity": "sha512-qqJBtEyVgS0ZmPGdCFPWJ3FreoqvG4MVQln/kCgF7Olq95IbOp0/BWyMwbdtn4VTvkM8Y7khCQ2Xgk/tcrCXig==",
+      "version": "2.5.2",
+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.2.tgz",
+      "integrity": "sha512-8zGqypfENjCIqGhgXToC8aB2r7YrBX+AQAfIPs/Mlk+BtPTztOvTS01NRW/3Eh60J+a48lt8qsCzirQ6loCVfA==",
       "requires": {
         "bytes": "3.1.2",
         "http-errors": "2.0.0",
@@ -6984,6 +7399,14 @@
       "integrity": "sha512-xWGDIW6x921xtzPkhiULtthJHoJvBbF3q26fzloPCK0hsvxtPVelvftw3zjbHWSkR2km9Z+4uxbDDK/6Zw9B8w==",
       "dev": true
     },
+    "readdirp": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
+      "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==",
+      "requires": {
+        "picomatch": "^2.2.1"
+      }
+    },
     "require-directory": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -7132,6 +7555,37 @@
       "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==",
       "dev": true
     },
+    "simple-update-notifier": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/simple-update-notifier/-/simple-update-notifier-2.0.0.tgz",
+      "integrity": "sha512-a2B9Y0KlNXl9u/vsW6sTIu9vGEpfKu2wRV6l1H3XEas/0gUIzGzBoP/IouTcUQbm9JWZLH3COxyn03TYlFax6w==",
+      "requires": {
+        "semver": "^7.5.3"
+      },
+      "dependencies": {
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
+        "semver": {
+          "version": "7.5.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+          "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+        }
+      }
+    },
     "sisteransi": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/sisteransi/-/sisteransi-1.0.5.tgz",
@@ -7324,7 +7778,6 @@
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
       "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
-      "dev": true,
       "requires": {
         "is-number": "^7.0.0"
       }
@@ -7334,6 +7787,14 @@
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
       "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
     },
+    "touch": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.0.tgz",
+      "integrity": "sha512-WBx8Uy5TLtOSRtIq+M03/sKDrXCLHxwDcquSP2c43Le03/9serjQBIztjRz6FkJez9D/hleyAXTBGLwwZUw9lA==",
+      "requires": {
+        "nopt": "~1.0.10"
+      }
+    },
     "type-detect": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
@@ -7355,6 +7816,11 @@
         "mime-types": "~2.1.24"
       }
     },
+    "undefsafe": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz",
+      "integrity": "sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA=="
+    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
diff --git a/02-nodejs/package.json b/02-nodejs/package.json
index 4858530a..ffe5a161 100644
--- a/02-nodejs/package.json
+++ b/02-nodejs/package.json
@@ -1,27 +1,30 @@
 {
-  "name": "02-nodejs",
-  "version": "1.0.0",
-  "description": "",
-  "main": "index.js",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
-    "test-fileServer": "./node_modules/jest/bin/jest.js ./tests/fileServer.test.js",
-    "test-todoServer": "./node_modules/jest/bin/jest.js ./tests/todoServer.test.js",
-    "test-authenticationServer": "./node_modules/jest/bin/jest.js ./tests/authenticationServer.test.js",
-    "test-all": "./node_modules/jest/bin/jest.js ./tests/"
-  },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
-  "devDependencies": {
-    "jest": "^29.5.0",
-    "supertest": "^6.3.3"
-  },
-  "jest": {
-    "testTimeout": 10000
-  },
-  "dependencies": {
-    "express": "^4.18.2",
-    "uuid": "^9.0.0"
-  }
-}
+    "name": "02-nodejs",
+    "version": "1.0.0",
+    "description": "",
+    "main": "index.js",
+    "scripts": {
+        "start": "nodemon todoServer.js",
+        "test": "echo \"Error: no test specified\" && exit 1",
+        "test-fileServer": "./node_modules/jest/bin/jest.js ./tests/fileServer.test.js",
+        "test-todoServer": "./node_modules/jest/bin/jest.js ./tests/todoServer.test.js",
+        "test-authenticationServer": "./node_modules/jest/bin/jest.js ./tests/authenticationServer.test.js",
+        "test-all": "./node_modules/jest/bin/jest.js ./tests/"
+    },
+    "keywords": [],
+    "author": "",
+    "license": "ISC",
+    "devDependencies": {
+        "jest": "^29.5.0",
+        "supertest": "^6.3.3"
+    },
+    "jest": {
+        "testTimeout": 10000
+    },
+    "dependencies": {
+        "body-parser": "^1.20.2",
+        "express": "^4.18.2",
+        "nodemon": "^3.0.2",
+        "uuid": "^9.0.0"
+    }
+}
\ No newline at end of file
diff --git a/02-nodejs/todoServer.js b/02-nodejs/todoServer.js
index cffc7d60..54f728ae 100644
--- a/02-nodejs/todoServer.js
+++ b/02-nodejs/todoServer.js
@@ -40,10 +40,173 @@
   Testing the server - run `npm run test-todoServer` command in terminal
  */
 const express = require('express');
+const fs = require('fs');
 const bodyParser = require('body-parser');
 
 const app = express();
 
 app.use(bodyParser.json());
 
+app.get("/todos", (req, res) => {
+    fs.readFile('./files/todo.txt', 'utf-8', (err, data) => {
+        if (err) {
+            return res.status(500).send("Fetching Todos Failed");
+        }
+
+        res.status(200).json({
+            todos: data !== "" ? JSON.parse(data) : []
+        });
+    })
+});
+
+app.get("/todos/:id", (req, res) => {
+
+    const { id } = req.params;
+
+    fs.readFile('./files/todo.txt', 'utf-8', (err, data) => {
+        if (err) {
+            res.status(500).send("Fetching Todos Failed");
+        }
+        else {
+
+            const existingData = data !== "" ? [...JSON.parse(data)] : [];
+
+            const filteredData = existingData.filter(item => item.id === parseInt(id));
+
+            if (filteredData.length > 0) {
+                res.status(200).json({
+                    todos: filteredData?.[0]
+                });
+            }
+            else {
+                res.status(404).send("Not Found!");
+            }
+        }
+    })
+});
+
+app.post('/todos', (req, res) => {
+    fs.readFile('./files/todo.txt', 'utf-8', (err, data) => {
+        if (err) {
+            res.status(500).send("Fetching Todos Failed");
+        }
+        else {
+
+            const updatedData = data !== "" ? [...JSON.parse(data)] : [];
+
+            updatedData.push({
+                id: updatedData.length,
+                ...req.body
+            });
+
+            fs.writeFile('./files/todo.txt', JSON.stringify(updatedData), err => {
+                if (err) {
+                    res.status(500).send("Adding Todo Failed!");
+                }
+                else {
+                    res.status(201).send({
+                        id: updatedData.length - 1
+                    });
+                }
+            })
+        }
+    })
+});
+
+app.put("/todos/:id", (req, res) => {
+
+    const { id } = req.params;
+
+    fs.readFile('./files/todo.txt', 'utf-8', (err, data) => {
+        if (err) {
+            res.status(500).send("Fetching Todos Failed");
+        }
+        else {
+
+            const existingData = data !== "" ? [...JSON.parse(data)] : [];
+
+            let itemFound = false;
+
+            const updatedData = [];
+
+            for (let i of existingData) {
+                if (i.id === parseInt(id)) {
+                    itemFound = true;
+
+                    updatedData.push({
+                        id: i.id,
+                        ...req.body
+                    });
+                }
+                else {
+                    updatedData.push(i);
+                }
+            }
+
+            if (itemFound) {
+                fs.writeFile('./files/todo.txt', JSON.stringify(updatedData), err => {
+                    if (err) {
+                        res.status(500).send("Adding Todo Failed!");
+                    }
+                    else {
+                        res.status(200).send("Todo Item Updated Succesfully")
+                    }
+                })
+            }
+            else {
+                res.status(404).send("Item Not Found");
+            }
+        }
+    })
+});
+
+app.delete("/todos/:id", (req, res) => {
+    const { id } = req.params;
+
+    fs.readFile('./files/todo.txt', 'utf-8', (err, data) => {
+        if (err) {
+            res.status(500).send("Fetching Todos Failed");
+        }
+        else {
+
+            const existingData = data !== "" ? [...JSON.parse(data)] : [];
+
+            let itemFound = false;
+
+            const updatedData = [];
+
+            for (const i of existingData) {
+                if (i.id !== parseInt(id)) {
+                    updatedData.push(i);
+                }
+                else {
+                    itemFound = true;
+                }
+            }
+
+            if (itemFound) {
+
+                fs.writeFile('./files/todo.txt', JSON.stringify(updatedData), err => {
+                    if (err) {
+                        res.status(500).send("Deleting Todo Failed!");
+                    }
+                    else {
+                        res.status(200).send("Todo Item deleted Succesfully");
+                    }
+                })
+
+            }
+            else {
+                res.status(404).send("Item Not Found");
+            }
+        }
+    })
+});
+
+app.all("*", (req, res) => {
+    res.status(404).send("Route Not Found!");
+});
+
+app.listen(3000);
+
 module.exports = app;