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CompTIA Network+ · Exam domain
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1. A network administrator notices consistently high latency when users access a specific web server. Which performance metric would be MOST helpful in determining the source of the latency?
Explanation
Packet loss directly contributes to increased latency due to retransmissions. A is incorrect because high bandwidth utilization might indicate congestion, but not necessarily latency for specific packets. C is incorrect because jitter affects real-time traffic like VoIP, not necessarily web server access. D is incorrect because client-side CPU usage does not directly cause server latency.
2. Which of the following is the MOST efficient method for a network administrator to receive immediate alerts about critical events, such as a router interface going down?
Explanation
SNMP traps are designed for immediate, event-driven notifications. A is incorrect because daily review is not immediate. B is incorrect because polling is less efficient and might miss brief outages. D is incorrect because while useful for analysis, it doesn't provide immediate alerts like traps do.
3. A network engineer wants to monitor the number of packets discarded by a router's interface due to congestion. Which interface statistic is MOST relevant?
Explanation
Discards directly indicate packets dropped due to resource constraints like buffer overflows. A is incorrect because utilization reflects the percentage of available bandwidth being used, but not discarded packets. B is incorrect because errors refer to corrupted or malformed packets, not necessarily those dropped due to congestion. D is incorrect because bandwidth is the capacity of the interface, not a measure of dropped packets.
4. Which document outlines the steps to be taken when a server unexpectedly crashes, including data recovery and system restoration?
Explanation
An Incident Response Procedure details the actions to take when unexpected events disrupt normal operations. A is incorrect because an AUP governs user behavior. B is incorrect because Change Management controls planned alterations. D is incorrect because an NDA protects confidential information.
5. A network technician needs to understand the physical cable connections between devices in the server room. Which document would be MOST helpful?
Explanation
Wiring schematics illustrate the physical layout and connections of cables and hardware. A is incorrect because a logical network diagram shows the network's structure and IP addressing. B is incorrect because the Business Continuity Plan covers overall business recovery. D is incorrect because the Acceptable Use Policy covers user behavior.
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