CompTIA Network+ N10-008 Cert Guide

Chapter 13

Ensure Network Availability

This chapter covers the following topics related to Objective 3.1 (Given a scenario, use the appropriate statistics and sensors to ensure network availability) of the CompTIA Network+ N10-008 certification exam:

• Performance metrics/sensors

  • Device/chassis

    • Temperature

    • Central processing unit (CPU) usage

    • Memory

  • Network metrics

    • Bandwidth

    • Latency

    • Jitter

• SNMP

  • Traps

  • Object identifiers (OIDs)

  • Management information bases (MIBs)

• Network device logs

  • Log reviews

    • Traffic logs

    • Audit logs

    • Syslog

  • Logging levels/severity levels

• Interface statistics/status

  • Link state (up/down)

  • Speed/duplex

  • Send/receive traffic

  • Cyclic redundancy checks (CRCs)

  • Protocol packet and byte counts

• Interface errors or alerts

  • CRC ...