diff --git a/projects/blockchain-valley-session-4/smart_contracts/personal_bank/deploy-config.ts b/projects/blockchain-valley-session-4/smart_contracts/personal_bank/deploy-config.ts
index feaa45a..9ad8855 100644
--- a/projects/blockchain-valley-session-4/smart_contracts/personal_bank/deploy-config.ts
+++ b/projects/blockchain-valley-session-4/smart_contracts/personal_bank/deploy-config.ts
@@ -41,7 +41,7 @@ export async function deploy() {
   )
 
   // 2. Personal Bank 앱을 배포
-  const app = await appClient.create.bare()
+  const app = await appClient.create.bare() // 오버라이딩 전 함수를 배포
 
   // 3. 앱 미니멈 밸런스 0.1알고를 송금 (https://developer.algorand.org/docs/get-details/dapps/smart-contracts/apps/?from_query=minimum#minimum-balance-requirement-for-a-smart-contract)
   await algorand.send.payment(
@@ -54,10 +54,10 @@ export async function deploy() {
   )
 
   // User1 User2의 앱 클라이언트를 생성
-  const user1AppClient = new PersonalBankClient(
+  const user1AppClient = new PersonalBankClient( 
     {
       resolveBy: 'id',
-      id: app.appId,
+      id: app.appId, //앱을 배포했을 때의 app 변수
       sender: user,
     },
     algod,
@@ -79,7 +79,7 @@ export async function deploy() {
     depositAmt: number,
   ): Promise<void> {
     // User가 Personal Bank에 5 알고를 입금하는 payment 트랜잭션 생성
-    const depositTxn = await algorand.transactions.payment({
+    const depositTxn = await algorand.transactions.payment({ //send가 아니라 transaction
       sender: user.addr,
       receiver: app.appAddress,
       amount: algokit.algos(depositAmt),
@@ -96,7 +96,7 @@ export async function deploy() {
       첫번째 전달값으로 넣어주면 자동으로 어토믹 그룹으로 묶어줍니다.
    
    */
-    await appClient.compose().optIn.optInToApp({}).deposit({ ptxn: depositTxn }).execute({ suppressLog: true })
+    await appClient.compose().optIn.optInToApp({}).deposit({ ptxn: depositTxn }).execute({ suppressLog: true }) //그룹을 만드는 것 (compose)
 
     console.log(`=== ${userName} 출금 전 ===`)
 
diff --git a/projects/coding-assignment/src/Home.tsx b/projects/coding-assignment/src/Home.tsx
index 5c77384..4d6da33 100644
--- a/projects/coding-assignment/src/Home.tsx
+++ b/projects/coding-assignment/src/Home.tsx
@@ -6,6 +6,7 @@ import algosdk from 'algosdk'
 import React, { useEffect, useState } from 'react'
 import ConnectWallet from './components/ConnectWallet'
 import MethodCall from './components/MethodCall'
+import { DigitalMarketplaceClient } from './contracts/DigitalMarketplace'
 import * as methods from './methods'
 import { getAlgodConfigFromViteEnvironment } from './utils/network/getAlgoClientConfigs'
 
@@ -83,13 +84,23 @@ const Home: React.FC<HomeProps> = () => {
   */
 
   // 문제 1 시작
-  const dmClient = '여기에 코드 작성'
-  // 문제 1 끝
 
   const toggleWalletModal = () => {
     setOpenWalletModal(!openWalletModal)
   }
 
+  const dmClient = new DigitalMarketplaceClient(
+    {
+      resolveBy: 'id',
+      // The unique id of an already deployed smart contract, or 0 if the smart contract has not been deployed
+      id: appId,
+      // Optionally specify a default sender for all calls made from the client
+      sender: { addr: activeAddress!, signer },
+    },
+    // An algod client is required to make the underlying calls to the network
+    algorand.client.algod,
+  )
+
   return (
     <div className="hero min-h-screen bg-teal-400">
       <div className="hero-content text-center rounded-lg p-6 max-w-md bg-white mx-auto">
diff --git a/projects/coding-assignment/src/methods.ts b/projects/coding-assignment/src/methods.ts
index b62e745..b881e92 100644
--- a/projects/coding-assignment/src/methods.ts
+++ b/projects/coding-assignment/src/methods.ts
@@ -60,7 +60,8 @@ export function create(
     */
 
     // 문제 2 시작
-    const createResult = '여기에 코드 작성'
+    const createResult = await dmClient.create.bare()
+
     // 문제 2 끝
 
     /*
@@ -85,10 +86,10 @@ export function create(
       sender,
       receiver: createResult.appAddress,
       amount: algokit.algos(0.1 + 0.1),
-      extraFee: '여기에 코드 작성',
+      extraFee: algokit.algos(0.001),
     })
 
-    ;('여기에 bootstrap 메서드 호출 코드 작성')
+    await dmClient.bootstrap({ asset: assetId, unitaryPrice: unitaryPrice, mbrPay: mbrTxn })
     // 문제 3 끝
 
     await algorand.send.assetTransfer({
@@ -130,10 +131,10 @@ export function buy(
       sender,
       receiver: appAddress,
       amount: algokit.microAlgos(Number(quantity * unitaryPrice)),
-      extraFee: '여기에 코드 작성',
+      extraFee: algokit.algos(0.001),
     })
 
-    ;('여기에 buy 메서드 호출 코드 작성')
+    await dmClient.buy({ buyerTxn: buyerTxn, quantity: quantity })
     // 문제 4 끝
 
     const state = await dmClient.getGlobalState()
@@ -173,7 +174,7 @@ export function deleteApp(dmClient: DigitalMarketplaceClient, setAppId: (id: num
     */
 
     // 문제 5 시작
-    '여기에 코드 작성'
+    await dmClient.delete.withdrawAndDelete({}, { sendParams: { fee: algokit.algos(0.003) } })
     // 문제 5 끝
     setAppId(0)
   }