考試時(shí)間：105分鐘
考題數(shù)目：55-65題
及格分?jǐn)?shù)：706分
考試內(nèi)容：
Technology
Identify troubleshooting methods
Explain documentation standards and the requirements for document control
Implementation and Operation
Establish an optimal system baseline
Diagram and document system topology
Document end system configuration
Verify connectivity at all layers
Select an optimal troubleshooting approach
Planning and Design
Plan a network documentation system
Plan a baseline monitoring scheme
Plan an approach to troubleshooting that minimizes system downtime
Troubleshooting
Use Cisco IOS commands and applications to identify system problems at all layers
Isolate system problems to one or more specific layers
Resolve sub-optimal system performance problems at layers 2 through 7
Resolve local connectivity problems at layer 1
Restore optimal baseline service
Work with external providers to resolve service provision problems
Work with system users to resolve network related end-use problems
附錄：
新版本的642-831變化很大，從以前重點(diǎn)講述技術(shù)轉(zhuǎn)變?yōu)橹攸c(diǎn)講述技術(shù)文檔的建立、完善和Troubleshooting流程及日志，并沒有過多的Troubleshooting Case，該課程從側(cè)面描述一名網(wǎng)絡(luò)工程師或網(wǎng)絡(luò)管理員的工作職責(zé)，也反映出當(dāng)今中國(guó)網(wǎng)絡(luò)工程師和網(wǎng)絡(luò)管理員的各種通病，CIT的學(xué)習(xí)教會(huì)你如何Troubleshooting網(wǎng)絡(luò)故障。
官方鏈接: http://www.cisco.com/warp/public/10/wwtraining/certprog/testing/current_exams/642-831.html
