diff --git a/docs/work/certifications/microsoft/microsoft-azure-az-900.md b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
index 49544bc..4fc6d59 100644
--- a/docs/work/certifications/microsoft/microsoft-azure-az-900.md
+++ b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
@@ -5,12 +5,19 @@ Microsoft Certified: Azure Fundamentals，代号为AZ900，是Azure的初级认
 考试的相关讨论请访问 [Microsoft Certified: Azure Fundamentals 认证考试](https://www.isharkfly.com/t/microsoft-certified-azure-fundamentals/17770)
 
 ## 学习要点
+
 AZ-900 的考试比较简单，但也绝对不是简单到什么都不看，随便做做测试就能过的那种。
 
 至于网上那种随便看看就过了那种，我劝你还是不要相信了，其中的主要问题在于 Azure 的概念很多，服务很多，而且很多服务又是交叉重复的。
 
 考试的时候可能会因为概念不清楚而选不出正确答案。
 
+### 刷题
+
+| 题库                                             | 备注          |
+|------------------------------------------------|-------------|
+| https://insidethemicrosoftcloud.com/az900quiz/ | 当前这个题库可免费可用 |
+
 ## 概念和定义
 
 * [Resource Tags](https://www.isharkfly.com/t/azure-resource-tags/17796)
@@ -22,4 +29,20 @@ AZ-900 的考试比较简单，但也绝对不是简单到什么都不看，随
 * [Azure Conditional Access](https://www.isharkfly.com/t/azure-conditional-access/17802)
 * [Azure Power Apps](https://www.isharkfly.com/t/azure-power-apps/17803)
 * [Azure Bastion](https://www.isharkfly.com/t/azure-bastion/17804)
-* [Azure ExpressRoute](https://www.isharkfly.com/t/azure-expressroute/17805)
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+* [Azure ExpressRoute](https://www.isharkfly.com/t/azure-expressroute/17805)
+* [Azure CapEx 和 OpEx 的概念和定义](https://www.isharkfly.com/t/azure-capex-opex/17807)
+* [Azure Reservations](https://www.isharkfly.com/t/azure/17808)
+* [Azure Consumption Based Model](https://www.isharkfly.com/t/azure/17809)
+* [Azure scalability, elasticity, agility 和 high availability](https://www.isharkfly.com/t/untitled-ai-bot-pm/17811)
+* [Power Automate 与 Functions：关系和区别](https://www.isharkfly.com/t/untitled-ai-bot-pm/17814)
+* [Azure Resource Manager (ARM)](https://www.isharkfly.com/t/azure-arm/17815)
+* [Azure Synapse Analytics](https://www.isharkfly.com/t/untitled-ai-bot-pm/17816)
+* [Azure Regions](https://www.isharkfly.com/t/azure/17817)
+* [Azure Regions 和 Resource Group 之间的关系](https://www.isharkfly.com/t/azure/17818)
+* [Azure Log Analytics 与 Event Hub 对比](https://www.isharkfly.com/t/azure-log-analytics-event-hub/17819)
+* [Azure Service Bus](https://www.isharkfly.com/t/azure-service-bus/17821)
+* [Azure Event Grid](https://www.isharkfly.com/t/azure-event-grid/17820)
+* [Azure Service Bus 与 Event Grid 对比](https://www.isharkfly.com/t/azure-service-bus-event-grid/17822)
+* [Azure App Insights](https://www.isharkfly.com/t/untitled-ai-bot-pm/17823)
+* [Azure Microsoft Sentinel](https://www.isharkfly.com/t/untitled-ai-bot-pm/17824)
+* [Azure Microsoft Defender for Cloud](https://www.isharkfly.com/t/untitled-ai-bot-pm/17825)
\ No newline at end of file