Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A team wants to know which internal hosts are sending the most traffic to a specific data center subnet. Which technology is most directly associated with that visibility goal?
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
Best answer
NetFlow
This is correct because NetFlow is designed to provide traffic-flow visibility.
B
Distractor review
Syslog
This is wrong because Syslog focuses on event and message reporting.
C
Distractor review
DHCP
This is wrong because DHCP assigns host configuration and does not provide traffic-flow analysis.
D
Distractor review
PortFast
This is wrong because PortFast is an STP edge-port feature.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is selecting Syslog or DHCP when asked about traffic visibility. Syslog focuses on logging system events and device messages, not on analyzing who is sending traffic or how much. DHCP is solely for IP address assignment and does not provide any traffic flow data. Candidates might confuse these because they are familiar Cisco technologies, but neither provides the flow-level traffic insight that NetFlow offers. Misunderstanding the purpose of these protocols leads to incorrect answers, especially under time pressure.
Technical deep dive
How to think about this question
NetFlow is a Cisco-developed network protocol designed to collect IP traffic information as it enters or exits an interface. It provides detailed visibility into traffic flows by capturing metadata such as source and destination IP addresses, ports, protocols, and the amount of data transferred. This flow-based data enables network administrators to analyze who is communicating with whom, the volume of traffic, and the types of applications in use, which is critical for capacity planning, security monitoring, and troubleshooting. In the context of the CCNA exam and Cisco networking, NetFlow is the primary technology used to gain insight into internal host traffic patterns toward specific subnets or destinations, such as a data center subnet. Unlike Syslog, which logs system events, or DHCP, which assigns IP addresses, NetFlow focuses exclusively on traffic flow data. This makes it the most direct and effective tool for identifying which internal hosts generate the most traffic to a particular subnet, supporting network visibility and performance management. A common exam trap is confusing NetFlow with other monitoring or configuration protocols like Syslog or DHCP. While Syslog records device events and DHCP manages IP address assignments, neither provides detailed traffic flow analytics. Understanding this distinction is crucial because selecting Syslog or DHCP as the answer overlooks the fundamental purpose of NetFlow. Practically, network engineers rely on NetFlow to monitor bandwidth usage and detect anomalies, making it indispensable for traffic analysis in Cisco environments.
KKey Concepts to Remember
- NetFlow collects detailed IP traffic flow data including source/destination IPs, ports, protocols, and byte counts to provide visibility into network conversations.
- NetFlow enables network administrators to identify which internal hosts generate the most traffic to specific subnets or destinations.
- Syslog records device-generated event messages and system logs but does not provide traffic flow or volume analysis.
- DHCP assigns IP addresses and network configuration parameters to hosts but does not monitor or analyze traffic flows.
- PortFast is a Spanning Tree Protocol feature that immediately transitions a port to the forwarding state and does not relate to traffic monitoring.
- NetFlow data supports capacity planning, troubleshooting, and security analysis by revealing traffic patterns and unusual usage.
- Choosing NetFlow over other protocols requires understanding that traffic flow visibility is distinct from event logging or IP address management.
- Cisco devices export NetFlow data to collectors or analyzers that aggregate and interpret traffic flow information for network insights.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Related practice questions
Related 200-301 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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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 router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
NetFlow collects detailed IP traffic flow data including source/destination IPs, ports, protocols, and byte counts to provide visibility into network conversations.
What is the correct answer to this question?
The correct answer is: NetFlow — NetFlow is the best fit because it provides visibility into traffic flows and conversations. In practical terms, it helps answer questions like who is talking to whom, over which protocols and ports, and how much traffic is being exchanged. That makes it useful for capacity, troubleshooting, and unusual-traffic analysis. This is different from Syslog, which reports device events, and from general SNMP polling, which focuses more on device and interface counters.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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