Troubleshooting

延伸阅读

技术指南

• 5 subnetting mistakes that break real networks

学习

涵盖此主题的模块

6 lessons 门与此主题相关的课程，按顺序编排于这些模块中，并配有相应的测验与实验。

• Diagnosis in practiceNetwork operations and design
• Direction and stateNetwork security and acls
• Filtering by addressNetwork security and acls
• Dhcp in operationNetwork services
• Services assessmentNetwork services
• Network basicsNetworking fundamentals
• Network servicesNetworking fundamentals
• Switching and vlansNetworking fundamentals
• BgpRouting protocols
• Choosing a pathRouting protocols
• EigrpRouting protocols
• Knowing what is plugged inRouting protocols
• Ospf areas and faultsRouting protocols
• Static routing faultsRouting protocols
• When the link is the problemRouting protocols

练习

实操实验

真实的虚拟网络，配有设备控制台，自动评分。每次尝试都会重新生成地址方案。

• Egress Filter on the Records Server
• The Firewall That Never Saw the Request
• Traffic Leaves by the Backup Circuit
• eBGP Session Up, No Routes
• Slow, Not Broken
• DHCP Scope Eats the Server Block
• DHCP Hands Out the Wrong Gateway
• EIGRP - Fix R2 (3-Router Chain)
• Static Route Outranks OSPF
• iBGP Route Learned but Never Installed
• The Accounting VLAN Went Quiet After a Cable Audit
• The Patch Panel Labels Are Wrong
• Small Packets Fine, Large Packets Gone
• OSPF Area Mismatch on a New Link
• OSPF Stuck in ExStart
• The Protocol That Loses Your Subnet Masks
• Shared-Segment Wrong Next-Hop
• Overbroad Summary Route Blackhole
• One Server, Wrong Exit Interface
• The Route That Isn't There
• Tagged Port, Untagged Host
• Trunk Missing a VLAN
• Access Port in the Wrong VLAN
• Allow Access to Wiki Replica

检验

评分测验

20 graded questions 道题目，分布在 10 quizzes 个测验中，在上方模块内进行。答错时会解释你所选选项背后的具体误区。

复习

间隔重复

Troubleshooting 已纳入复习阶梯追踪。你回答过一道相关题目后，它会按照逐渐拉长的间隔重新出现，只要你持续答对；如果答错则会重置。查看你的复习队列。

认证

此主题覆盖的考试目标