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Zorluk: OrtaNetwork Performance Monitoring and Metrics

Users at a corporate branch office report frequent audio distortion and frame freezing during real-time video conferencing calls. The network administrator verifies that total interface bandwidth utilization remains low, but suspects variable packet arrival delay is causing the degradation. The administrator must establish performance polling of router MIB counters for this metric while ensuring management traffic is both cryptographically authenticated and fully encrypted. Which monitoring configuration should the administrator implement?

  1. SNMPv3 configured with the authPriv security levelCevap
  2. B
    SNMPv2c configured with a complex read-only community string
  3. C
    SNMPv3 configured with noAuthNoPriv over TCP port 161
  4. D
    SNMPv3 configured with authNoPriv over UDP port 22

Cevap

The network administrator should implement SNMPv3 configured with the authPriv security level.
The correct answer specifies SNMPv3 with the authPriv security level. SNMPv3 is the only SNMP version that natively supports advanced security features. The authPriv (Authentication and Privacy) security level uses hashing algorithms like SHA for authenticating management users and symmetric encryption algorithms like AES to encrypt MIB query payloads, protecting performance monitoring data against sniffing.

Adım Adım Çözüm

1
Identify the required network metric and management requirements
The scenario identifies variable packet arrival delay (jitter) requiring MIB polling, alongside mandatory authentication and encryption for management traffic.
Tracking device performance counters requires SNMP querying, while organizational security policy mandates protecting telemetry in transit.
2
Evaluate SNMP security levels for compliance
SNMPv3 supports three security levels: noAuthNoPriv (no auth, no encryption), authNoPriv (authentication, no encryption), and authPriv (authentication and encryption).
Only authPriv satisfies the mandate for both identity verification and payload confidentiality.

Anahtar Kavram

SNMP Version 3 Security Levels and Network Telemetry
Tahmini Süre:1m 15s
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Konular

Network Performance Monitoring and Metrics

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