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Definitions:Network+
N10-008+, Dion Training
| Question | Answer |
|---|---|
| Most severe, system unstable, emergency. | level 0 |
| Alert condition, immediate correction needed. | level 1 |
| Critical condition, system primary application failure, take immediate action. | level 2 |
| Error condition, prevents proper system function. | level 3 |
| Warning condition, action needed to prevent errors. | level 4 |
| Notice condition, unusual events, not errors. | level 5 |
| Information condition, normal operation, no action. | level 6 |
| Debugging condition, useful for developers. | level 7 |
| Planning | phase 1 |
| Design | phase 2 |
| Transition | phase 3 |
| Operations | phase 4 |
| Retirement | phase 5 |
| Traffic flowing in and out of an edge system | north-south traffic |
| Traffic exiting the data center | north traffic |
| Traffic entering the data center | south traffic |
| Traffic flowing within the data center | east-west traffic |
| Variable delay when a client receives traffic | jitter |
| Bi-directional fiber transmission | half-duplex |
| simultaneous fiber transmission | full-duplex |
| Software that can be configured to evaluate data logs from IDS, IPS, firewalls, and proxy servers. | siem |
| Standard for generating, storing, and processing messages about events on a system. | syslog |
| Standard nomenclature for describing security-related software flaws | cve |
| Query's active network connections, routing tables, network performance, open ports, and network interface status | netstat |
| Traces end-to-end connections and identifies all intermediate nodes each hop. Uses icmp. | tracert/traceroute |
| Query nameservers for information about addresses and other dns records. | dig |
| Query computers in the network about dns addresses. | nslookup |
| Tests end-to-end connections through request and reply messages. | ping |