Fortinet 作為網路安全領域的龍頭之一，對技術要求自然不低。 最近收到不少小夥伴關於 Fortinet OA 的求助，我們 Programhelp 輔導過不少拿到 Fortinet offer 的同學，今天這篇就來幫你拆解 Fortinet 的在線筆試流程和高頻題型，適合剛準備的同學快速入門！
Fortinet OA 流程簡介
一、在線筆試（OA）：題多+偏實戰，一定要抓緊節奏！
Fortinet 的 OA 一般通过自家平台进行，时间大约 90 分钟左右。题量不小，大概 7～10 题之间，包含多道编程题和基础知识选择题，整体偏实战，强调 hands-on 能力，题目风格也比 LeetCode 更“工程化”一些。
HR 會提前問你熟悉的語言，部分題目語言可選，但也有一些指定語言題必須用崗位要求的語言（如 C++/Java/Python）。 這點要特別注意，別等開始做才發現不支援你熟悉的語言。
題目難度整體中等，但“多、雜、手動操作多”，基本上每道題都要求跑通、調試、提交都要精準，不能出錯。 改錯時間成本很高，基本沒有時間回頭，所以一開始的閱讀理解、測試邏輯要非常清晰。
第一輪技術面試（Round 1）：基礎知識重頭戲，系統/網路全覆蓋！
第一輪技術面沒有直接考 LeetCode，而是大量基礎知識提問，特別偏向系統層級。 比如操作系統出問題時怎麼 Debug、線程與進程的差異、Page Fault 如何定位、記憶體分配策略等等，很多題都會從一個故障場景出發，逐步深挖，考查你對底層原理的掌握程度。
這一輪建議大家提前複習操作系統經典知識點，別光刷題，對 Linux 系統基本命令、調試流程、線程死鎖等內容也要掌握。 面試官往往從一個點不斷 follow up，思路不清晰很容易被“問炸”。
第二輪技術面試（Round 2）：網路 + 多線程 + 問你熟不熟 TCP/IP！
这一轮偏向 Network + Multi-thread 的内容，对网络编程要求不低。会问你 TCP/IP、三次握手、DNS 请求链路流程等，同时还有多线程场景下如何设计互斥机制、如何避免资源竞争等。
很多同學在這個階段“掉線”，主要原因是基礎不紮實。 建議大家提前複習 socket 程式設計、併發控制（mutex， semaphore）、調度模型等。 能寫出 pseudo-code 就更好了。
第三輪技術面試（Round 3）：System Design（但更偏團隊項目設計）
这轮是比较“贴合组业务”的系统设计，面试官往往会让你设计他们组实际负责的系统模块（比如某个安全策略管控平台、日志追踪系统等），要求你从架构出发，讲清楚系统整体设计思路、数据流动过程、组件之间的关系。
這輪不像傳統 Big Tech 那種 open-ended 的系統設計，更偏“業務落地 + 工程實現細節”，如果你面試前對 Fortinet 的業務了解足夠，會加分不少。 建議提前流覽 Fortinet 的產品線和相關開源專案。
特別提醒：沒有 LeetCode，但不是輕鬆！
很多同學聽說 Fortinet 沒有傳統意義上的 Coding 面就鬆懈了，其實錯了。 Fortinet 在 OA 就已經“考乾淨了”演演算法題，後續面試全都偏向基礎、底層、系統架構等內容，是對整體計算機基礎能力的全方位考核。
真題回憶 + 思路拆解
題目 1：Unmonitored Service
A financial firm experienced a breach due to an unmonitored service on port 8080, bypassing the existing firewall and Intrusion Prevention System (IPS). What specific command configuration should be implemented to prevent similar attacks and enhance the firm’s network security?
Pick ONE option:
A. Add a honeypot by executing docker run -d -p 8080:8080 dtagdevsec/honeypot to monitor and analyze traffic on port 8080.
B. Update the firewall rule set with iptables -A INPUT -p tcp --dport 8080 -j LOG to log all access attempts on port 8080.
C. Deploy a VPN on port 8080 using the command vpnserver start --port 8080 to secure the communication.
D. Configure the IPS to ignore port 8080 by applying ips config --ignore-port 8080.
題目 2：財務資料外洩
Your company has been hacked by a cybercriminal. All the financial data on the servers is encrypted with CryptoLocker ransomware. The security analystwas able to trace the source of the attack. It turns out that the hacker was able to break through the perimeter by exploiting a vulnerability in the officeprinter and establishing an SSH channel to [content cut off]. What are the measures you could apply to stop the hacker from moving laterally?
Pick ONE option:
A. Install a stateful firewall to block unused ports between your office network and the Internet.
B. Set up the VLANs, ACLs and perform the segmentation of the internal network.
C. Issue an email to all office staff instructing them to use only trusted software/firmware.
D. Install network discovery tools to timely eliminate the firmware vulnerability.
题目 3：Unknown Access Point
You are a network engineer at a large bank. You have set up a well-protected wireless network that uses a Radius server for authentication. Suddenly, youreceive several tickets stating that the wireless network is not functioning in a specific area. You find an unknown access point that is broadcastingyour SSID in the affected area. You shut down the access point and the users confirm the network works again. Is there anything else you should do after youclose the tickets?
Pick ONE option:
A. Since the AP is shut down, nothing else is needed.
B. Ask users to change passwords when they have a moment.
C. Solve question 4 high-priority security incident. Act according to the pre-established plan.
D. Reboot all the wireless APs immediately. Schedule a Radius reboot at night to eliminate the root cause.
题目 4：Unreachable ATMs
You are using SNMP protocol for collecting data from an ATM network. The network consists of 730 ATMs across the city. Suddenly, you receive an alert that 10ATMs are not reachable anymore. What would be the likely reason for that?
Pick ONE option:
A. The monitoring server is down.
B. The network switch servicing that ATM segment is down.
C. The DNS Server is down.
D. The SNMP server’s gateway is down.
E. It seems like someone is trying to hack your network.
题目 5：Java Networking
This code sends a message from the client to the server.
import java.io.*;
import java.net.*;
public class Server {
public static void main(String[] args) {
try {
ServerSocket serverSocket = new ServerSocket(9999);
Socket socket = serverSocket.accept();
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String message = in.readLine();
System.out.println("Client: " + message);
socket.close();
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}What is the output on the server side?
What is the result of compiling and/or running this code?
public class Generic {
private T value;
public Generic(T value) {
this.value = value;
}
public T getValue() {
return value;
}
}
import java.util.ArrayList;
public class Main {
public static void main(String args[]) {
ArrayList> g = new ArrayList();
Generic g1 = new Generic(10);
Generic g2 = new Generic("Hello");
g.add(g1);
g.add(g2);
int i = (Integer)g.get(0).getValue();
String s = (String)g.get(1).getValue();
System.out.println(s);
System.out.println(i);
}
}Programhelp 助你搞定 Fortinet 技术岗｜专注 OA + 面试实战辅助
我们是专注技术岗面试辅助的专业团队，已成功助力数百位学员通过 Fortinet、Amazon、Stripe、Databricks 等一线科技公司流程，特别擅长应对偏系统 + 偏工程实现类岗位的笔试 & 面试挑战。
針對 Fortinet，我們提供：
OA 定製代寫：還原真實題型，提供完整題解、提交策略和 Debug 支援，覆蓋 C++ / Python / Java 多語言。
技術面實戰輔助：支持語音轉述 + 答題思路提示，模擬真實面試問答節奏，提升臨場反應和表達邏輯。
系統設計講解 & 表達訓練：针对 Fortinet 偏业务落地型 SD 题目，提前梳理场景 & 构建框架，帮助你清晰表达关键技术选型。
簡歷優化 + 高通過率投遞建議：定向推薦崗位，避免海投浪費時間，精準衝刺目標部門/崗位。
如果你也在準備 Fortinet 或其他偏工程導向 / 系統開發類崗位，歡迎 聯絡我們 領取高頻真題樣本、模擬題講解或安排一對一面試支持，我們不僅讓你寫得出，還能答得穩、講得清！
