DCNSA Level III
Network Troubleshooting glossary
Every term this guide defines, A to Z, each with the chapter that teaches it. Open it when a word in a question is unfamiliar, and test yourself on it in the last week: cover the definition and say it in one sentence.
4 terms from the free first chapter
F
- Fault classification
Categorising the fault by type (hardware, software, configuration, external) and severity, to prioritise it correctly against other work and route it to the right person or team.
Taught in Common network issues
- Fault detection
Identifying that a fault exists at all, sometimes before a user even reports it, through monitoring (the maintenance schedule in Network Operating Systems) that catches a problem developing before it becomes a full outage.
Taught in Common network issues
- Fault location
Narrowing down exactly where in the network the fault originates, the specific device, link or configuration setting responsible, which is what the diagnostic procedure above is actually for.
Taught in Common network issues
- Fault reporting
Recording the fault, when it started, its symptoms and who is affected, the starting point for any investigation and the record a technician returns to if the first theory turns out wrong.
Taught in Common network issues
The full glossary adds every term from the other 3 chapters, A to Z, each with the chapter that teaches it.