Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
A network administrator receives an automated alert from the network monitoring system indicating that the bandwidth utilization on a specific switch port has exceeded the threshold for the past 10 minutes. According to best practices for network operations, what should the administrator do FIRST?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Immediately block the port to prevent potential network congestion from affecting other users.
Blocking the port without investigation could disrupt legitimate traffic and is not a best practice. The correct first step is to investigate.
B
Best answer
Check the monitoring system logs to identify the traffic source and destination.
Reviewing logs provides context on what is causing the high utilization, enabling informed decision-making about subsequent actions.
C
Distractor review
Reboot the switch to clear any temporary errors that might be causing the alert.
Rebooting the switch is an aggressive step that would cause network disruption and is not appropriate as an initial response to a bandwidth threshold alert.
D
Distractor review
Increase the bandwidth on the port to accommodate the higher traffic load.
Increasing bandwidth may be a solution, but it should be done through proper change management after investigating the cause of the traffic increase.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A network engineer needs to connect two switches located 400 meters apart. The cable run includes high electromagnetic interference from nearby machinery. The engineer decides to use fiber optic cabling. Which transceiver type and fiber combination should be used to ensure the link reaches 400 meters while remaining cost-effective?
Question 2
A network engineer is designing a new switched network and needs to ensure that broadcast traffic from one department does not reach another department's workstations. The engineer plans to use VLANs. Which of the following must be configured on the switches to isolate broadcast domains as intended?
Question 3
A security engineer is configuring a site-to-site VPN between two branch offices. The requirement is to encrypt all traffic between the two networks using IPsec. Which IPsec mode should be used to encrypt the entire IP packet including the original header?
Question 4
A network administrator is connecting two switches to increase bandwidth and provide redundancy. Which technology should be used to combine multiple physical links into a single logical link?
Question 5
A network administrator is experiencing issues where unauthorized devices are offering IP addresses to clients, causing connectivity problems. Which security feature should be enabled on switches to prevent this?
Question 6
A network administrator is troubleshooting a connectivity issue and suspects the problem is related to the physical cabling. At which layer of the OSI model should the administrator begin their investigation?
FAQ
Questions learners often ask
What does this N10-009 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Check the monitoring system logs to identify the traffic source and destination. — When an alert is received, the first step is to investigate and gather more information to understand the situation before taking any disruptive action. Checking the monitoring system logs helps identify the source of the traffic and determine if the increase is legitimate or malicious. Blocking the port immediately (A) could disrupt legitimate services. Rebooting the switch (C) is unnecessary and may cause downtime. Increasing bandwidth (D) is a potential solution, but it should only be considered after investigation and approval through change management.
What should I do if I get this N10-009 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
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