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IT Certifications · 810-115 OTSEC

Cisco OT Security Exam Practice Test

Operational technology security applies cybersecurity controls to industrial environments where programmable controllers, supervisory systems, networked sensors, and operators support physical processes. This practice page focuses on decisions that balance threat reduction with availability and safety, including asset and vulnerability relevance, network boundaries, monitoring paths, and response actions that could affect production.

Exam overview

Exam providerCisco
Exam code810-115 OTSEC
CategoryIT Certifications

About the Cisco OT Security Exam

OT security work begins with understanding which devices and communications support a process, then evaluating security changes against operational dependencies. That includes checking whether a vulnerability advisory applies to installed equipment, separating systems according to trust and process impact, and reviewing firewall rules for business justification and operational effect. Monitoring design requires sending useful logs without creating an unintended route for control traffic. Responders also need defined alert-handling coverage across shifts and coordination with operators before containment could interrupt a critical process. Configuration-change records and awareness exercises can help identify unauthorized network changes and account-compromise risks. Practice scenarios can help you compare these choices and explain how security actions preserve process reliability while reducing exposure.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

A control-system vendor publishes an advisory for a vulnerability in a device model used at a plant. What should the asset owner do first to determine relevance?

  1. AAssume every device at the plant is affected
  2. BIdentify deployed models, versions, configurations, and exposure, then compare them with the advisory
  3. CInstall the vendor's suggested fix on every device immediately
  4. DIgnore the advisory unless an incident has already occurred
Show answerCorrect answer: B

Applicability depends on the actual product, software version, configuration, and reachable attack paths. Establishing those facts helps prioritize validation and response without making unsafe assumptions or rushing changes into production.

Question 2

A site is defining how to handle security alerts during a night shift. Which arrangement best supports timely and consistent decisions?

  1. ADocument who is on call, how to escalate, and which roles can authorize operational actions
  2. BLeave alert handling to whoever happens to notice the message
  3. CRequire every alert to wait until the next business day
  4. DGive all staff authority to make any process-impacting change
Show answerCorrect answer: A

Clear on-call coverage, escalation paths, and decision authority reduce delays and ambiguity. Procedures should distinguish investigation steps from actions that may affect safe or reliable operations.

Question 3

During an OT security event, operators report that a proposed containment action could interrupt a critical process. What should responders do?

  1. AApply the action immediately because security always overrides process safety
  2. BCoordinate with authorized operations personnel to assess process consequences and select a safe containment step
  3. CAsk each operator to independently change controller settings
  4. DIgnore the report unless the security alert is confirmed by two tools
Show answerCorrect answer: B

Containment in OT must account for process safety and availability. Security responders and operations personnel should coordinate decisions, use established authority, and choose actions that reduce risk without creating an unsafe process condition.

Question 4

A plant needs to send security logs from OT systems to a central monitoring service. Which design choice best reduces the chance that monitoring traffic creates an unintended path for control commands?

  1. AUse a purpose-designed, restricted log-collection path that permits only required data flows
  2. BAllow the monitoring service to initiate any connection to OT devices
  3. CRoute all monitoring traffic through the same unrestricted path as engineering access
  4. DDisable network filtering so log delivery cannot be interrupted
Show answerCorrect answer: A

A narrowly scoped collection path supports visibility while limiting connectivity to the minimum required for log transfer. The design should be tested to confirm it does not introduce unnecessary command or management paths.

Question 5

A control network includes a time-critical application that depends on reliable delivery of its traffic. What is a sensible way to evaluate whether a network security control will affect it?

  1. ATest the control in a representative environment and measure latency, jitter, and packet loss
  2. BAssume security controls cannot affect application timing
  3. CEnable the control on the production network without observing traffic
  4. DMeasure only whether the application remains reachable
Show answerCorrect answer: A

Testing under representative conditions helps reveal timing and delivery effects that simple reachability checks may miss. Production changes should follow site change-management and operational approval processes.

Question 6

A facility is defining security zones for its control environment. Which factor is most useful when deciding whether two systems belong in separate zones?

  1. AWhether the systems were purchased from the same vendor
  2. BWhether the systems have similar screen layouts
  3. CTheir function, criticality, and required communication relationships
  4. DThe order in which the systems were installed
Show answerCorrect answer: C

Security zones should group systems with comparable security requirements and operational roles. Function, criticality, and necessary communications provide a defensible basis for separating zones and controlling traffic between them.

Question 7

A site plans to connect a new sensor gateway to an OT network. What is a sound first step before enabling the connection?

  1. AConnect it to the nearest switch port and review its behavior later
  2. BAssess its purpose, required communications, security configuration, and expected impact on operations
  3. CGive it unrestricted access so commissioning is not delayed
  4. DDisable its security features to ensure protocol compatibility
Show answerCorrect answer: B

A pre-connection assessment clarifies the device's role, communications, configuration, and operational impact. This helps the site apply appropriate controls before the device can affect the environment.

How to use this practice test

The free practice session draws up to 20 random questions from the 50-question bank. Work through each scenario by identifying the operational constraint, the security objective, and the safest next decision. Review the results after the session to spot areas for further study.

Preparation tips

  • For vulnerability scenarios, map the advisory’s affected models and versions against a plant asset inventory before judging relevance or proposing remediation.
  • Sketch OT zones and permitted communication paths; note how a monitoring or sensor connection could create a route toward control systems.
  • When evaluating firewall changes or other controls, identify the process dependency and test potential effects on latency, delivery reliability, and availability.
  • For incident scenarios, define who can assess process impact across shifts and involve operators before containment that might interrupt production.
  • Practice reviewing configuration records and suspicious-message reports as evidence for detecting unauthorized network changes or compromised OT-supporting accounts.
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