Introduction
簡介
Imagine your organization has received an investment to expand its insurance business to three new locations across the country. Each new office will have its own LAN, while the core infrastructure will remain at the original location. Additionally, more employees will be onboarded, including fully remote workers. As part of the IT team, your task is to build a scalable network that can handle the business requirements and ensure the new locations are operational as soon as possible.
假設你的公司獲得投資，準備將保險業務擴展到全國三個新據點。每個新辦公室都會有自己的 LAN，而核心基礎架構則會保留在原本的據點。此外，公司也會招募更多員工，包括完全遠端工作的員工。身為 IT 團隊的一員，你的任務是打造一個可擴充的網路，能滿足業務需求，並讓新據點盡快投入運作。
You realize the following:
你意識到以下幾點：
- The new offices need to be connected to the central network in a reliable and secure way.新辦公室需要以可靠且安全的方式連接到中央網路。
- It is important to set up secure connections for remote workers so they can access the company network safely from anywhere.必須為遠端員工建立安全連線，讓他們能從任何地方安全存取公司網路。
- The network’s capacity must be enhanced to handle increased traffic while maintaining robust security measures to protect against potential threats.網路容量必須提升以應付增加的流量，同時維持強大的安全措施，以防範潛在威脅。
- Ensuring customers can reliably access resources and services is crucial for the business.確保客戶能可靠地存取資源與服務，對業務而言至關重要。
The figure shows the company’s current network: a LAN within a single building, a remote worker connecting via a VPN, and the application customers use to access their insurance information. With the new changes in the company, you will need a scalable, reliable, fast, and secure wide-area network (WAN) technology solution.
下圖呈現公司目前的網路：位於單一大樓內的 LAN、透過 VPN 連線的遠端員工，以及客戶用來存取保險資訊的應用程式。隨著公司的新變化，你將需要一套可擴充、可靠、快速且安全的廣域網路（WAN）技術解決方案。
WAN technologies provide seamless and secure communication between LANs in distant sites, remote workers, and the core infrastructure. WAN solutions ensure high-speed data transfer, reduce latency, and maintain data security over long distances. This connectivity will integrate your networks into a cohesive system, supporting your business's growth and efficiency.
WAN 技術可在遠端據點的 LAN、遠端員工與核心基礎架構之間，提供無縫且安全的通訊。WAN 解決方案可確保高速資料傳輸、降低延遲，並在長距離傳輸中維持資料安全性。這種連線能力可將你的各個網路整合成一個統一的系統，支援企業的成長與效率。
In this course, you will learn how:
在本課程中，你將學習：
- WAN technologies operate.WAN 技術如何運作。
- WAN devices are deployed.WAN 裝置如何部署。
- Different WAN topology options.不同的 WAN 拓樸選項。
- WAN connectivity options are selected.如何選擇 WAN 連線選項。
- Virtual private networks (VPN) are used in WANs.虛擬私人網路（VPN）如何用於 WAN 中。
- Different approaches exist for connecting sites across the WAN.跨 WAN 連接各據點的不同做法。
When deploying a WAN solution, connectivity between the sites, remote workers, and the core infrastructure should to be reliable, secure, and efficient.
在部署 WAN 解決方案時，各據點、遠端員工與核心基礎架構之間的連線應具備可靠性、安全性與高效率。