Network Operations
Free CompTIA Network+ practice — 6 questions on Network Operations, with explanations. No sign-up. Full 12-question mixed test →
A security policy now requires that all SNMP management traffic be both authenticated and encrypted between network devices and the monitoring server. Which configuration meets this requirement?
SNMPv3 with authPriv provides both authentication (SHA) and encryption (AES) natively, which is the exam's standard answer for secure SNMP monitoring.
A core switch's maintenance log shows two uptime segments: 3,000 hours followed by a 6-hour repair, then another 3,000 hours followed by another 6-hour repair. Based on this data, what is the switch's MTTR?
MTTR (Mean Time To Repair) is the average repair time across failure events: (6 + 6) / 2 = 6 hours.
An engineer must monitor traffic on a 100Gbps core backbone link to identify top talkers, but the monitoring solution must not add significant processing overhead to the router at that traffic volume. Which approach BEST meets this requirement?
sFlow is specifically designed for high-speed links because it samples packets at a statistical rate, providing flow visibility with minimal processing and export overhead compared to full flow accounting.
A company requires a disaster recovery solution with real-time data replication and a Recovery Time Objective (RTO) under 15 minutes. Which DR site type should be implemented?
A hot site maintains fully configured, running infrastructure with real-time or near-real-time data replication, enabling failover in minutes — meeting the sub-15-minute RTO.
An administrator wants syslog to flag messages indicating conditions where immediate action is required, distinct from critical or error-level messages. Which numeric syslog severity level represents this classification?
Severity level 1 is defined as 'Alert' — action must be taken immediately — per the standard syslog severity scale tested on the exam.
A network team wants to define switch and router configurations as version-controlled text files that are applied automatically via scripts, ensuring consistent and repeatable deployments across the environment. Which concept does this describe?
Infrastructure as Code (IaC) defines device configurations as version-controlled files applied through automation, ensuring repeatability and consistency — exactly as described.
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