This 200-201 practice question tests your understanding of security monitoring. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are commonly used protocols for network security monitoring? (Select 2)
SMTP
Why wrong: SMTP is email protocol.
SNMP
SNMP is used for device monitoring.
TLS
Why wrong: TLS is encryption, not a monitoring protocol.
Syslog
Why wrong: Syslog is for logging events, not a monitoring protocol per se.
NetFlow
NetFlow is used for traffic flow monitoring.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
SNMP
SNMP (Simple Network Management Protocol) is correct because it is a standard protocol used to collect and organize information about managed devices on IP networks, enabling network monitoring and alerting via traps and polls. NetFlow is correct because it is a Cisco-developed protocol that captures metadata about network traffic flows, providing visibility into bandwidth usage, top talkers, and security anomalies for monitoring purposes.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
SMTP
Why it's wrong here
SMTP is email protocol.
SNMP
Why this is correct
SNMP is used for device monitoring.
Related concept
Read the scenario before looking for a memorised answer.
TLS
Why it's wrong here
TLS is encryption, not a monitoring protocol.
Syslog
Why it's wrong here
Syslog is for logging events, not a monitoring protocol per se.
NetFlow
Why this is correct
NetFlow is used for traffic flow monitoring.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the distinction between protocols used for monitoring (SNMP, NetFlow) versus protocols used for transport or security (TLS, SMTP) or logging (Syslog), leading candidates to mistakenly select Syslog because it is associated with security logs, even though it is not a monitoring protocol in the same sense as SNMP or NetFlow.
Detailed technical explanation
SNMP uses a manager-agent model where the manager polls agents via UDP ports 161/162, retrieving data from MIBs (Management Information Bases) like IF-MIB for interface statistics; NetFlow exports flow records (e.g., version 5 or 9) from routers/switches to a collector using UDP, with each flow defined by a 5-tuple (source IP, destination IP, source port, destination port, protocol). In a real-world scenario, an analyst might use SNMP to monitor CPU load on a firewall while simultaneously analyzing NetFlow data to detect a DDoS attack based on sudden traffic volume spikes.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 200-201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Security Monitoring — This question tests Security Monitoring — Read the scenario before looking for a memorised answer..
The correct answer is: SNMP — SNMP (Simple Network Management Protocol) is correct because it is a standard protocol used to collect and organize information about managed devices on IP networks, enabling network monitoring and alerting via traps and polls. NetFlow is correct because it is a Cisco-developed protocol that captures metadata about network traffic flows, providing visibility into bandwidth usage, top talkers, and security anomalies for monitoring purposes.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This 200-201 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-201 exam.
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