Fortinet 作为网络安全领域的龙头之一，对技术要求自然不低。最近收到不少小伙伴关于 Fortinet OA 的求助，我们 Programhelp 辅导过不少拿到 Fortinet offer 的同学，今天这篇就来帮你拆解 Fortinet 的在线笔试流程和高频题型，适合刚准备的同学快速入门！
Fortinet OA 流程简介
一、在线笔试（OA）：题多+偏实战，一定要抓紧节奏！
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 会提前问你熟悉的语言，部分题目语言可选，但也有一些指定语言题必须用岗位要求的语言（如 C++/Java/Python）。这点要特别注意，别等开始做才发现不支持你熟悉的语言。
题目难度整体中等，但“多、杂、手动操作多”，基本上每道题都要求跑通、调试、提交都要精准，不能出错。改错时间成本很高，基本没有时间回头，所以一开始的阅读理解、测试逻辑要非常清晰。
第一轮技术面试（Round 1）：基础知识重头戏，系统/网络全覆盖！
第一轮技术面没有直接考 LeetCode，而是大量基础知识提问，特别偏向系统层级。比如操作系统出问题时怎么 Debug、线程与进程的差异、Page Fault 如何定位、内存分配策略等等，很多题都会从一个故障场景出发，逐步深挖，考查你对底层原理的掌握程度。
这一轮建议大家提前复习操作系统经典知识点，别光刷题，对 Linux 系统基本命令、调试流程、线程死锁等内容也要掌握。面试官往往从一个点不断 follow up，思路不清晰很容易被“问炸”。
第二轮技术面试（Round 2）：网络 + 多线程 + 问你熟不熟 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。
很多同学在这个阶段“掉线”，主要原因是基础不扎实。建议大家提前复习 socket 编程、并发控制（mutex, semaphore）、调度模型等。能写出 pseudo-code 就更好了。
第三轮技术面试（Round 3）：System Design（但更偏团队项目设计）
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。
这轮不像传统 Big Tech 那种 open-ended 的系统设计，更偏“业务落地 + 工程实现细节”，如果你面试前对 Fortinet 的业务了解足够，会加分不少。建议提前浏览 Fortinet 的产品线和相关开源项目。
特别提醒：没有 LeetCode，但不是轻松！
很多同学听说 Fortinet 没有传统意义上的 Coding 面就松懈了，其实错了。Fortinet 在 OA 就已经“考干净了”算法题，后续面试全都偏向基础、底层、系统架构等内容，是对整体计算机基础能力的全方位考核。
真题回忆 + 思路拆解
题目 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.
题目 2：Compromised Financial Data
Your company has been hacked by a cybercriminal. All the financial data on the servers is encrypted with CryptoLocker ransomware. The security analyst was 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 office printer 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, you receive several tickets stating that the wireless network is not functioning in a specific area. You find an unknown access point that is broadcasting your 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 you close 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 10 ATMs 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。
针对 Fortinet，我们提供：
OA 定制代写：还原真实题型，提供完整题解、提交策略和 Debug 支持，覆盖 C++ / Python / Java 多语言。
技术面实战辅助：支持语音转述 + 答题思路提示，模拟真实面试问答节奏，提升临场反应和表达逻辑。
系统设计讲解 & 表达训练：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。
简历优化 + 高通过率投递建议：定向推荐岗位，避免海投浪费时间，精准冲刺目标部门/岗位。
如果你也在准备 Fortinet 或其他偏工程导向 / 系统开发类岗位，欢迎 联系我们 领取高频真题样本、模拟题讲解或安排一对一面试支持，我们不仅让你写得出，还能答得稳、讲得清！
