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Key Facts: ISO 27400 Foundation Exam

40Q, 1 hour

Exam Format

PECB

70%

Passing Score

PECB

USD 500 exam-only

Exam Fee

PECB

PECB ISO/IEC 27400 Foundation certification exam evaluates candidates on official PECB domains and standards. Note: this practice set is an English-language MCQ study adaptation.

Sample ISO 27400 Foundation Practice Questions

Try these sample questions to review concepts for the ISO 27400 Foundation exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which statement best describes the Internet of Things (IoT)?
A.A network of physical objects embedded with sensors, software, and connectivity that enables them to collect and exchange data
B.A protocol stack used exclusively for machine-to-machine communication in factories
C.A cloud computing model that delivers software applications over the internet
D.A wireless standard that replaces Ethernet cabling in enterprise data centres
Explanation: IoT refers to physical objects (things) equipped with sensing, processing, and communication capabilities so they can interact with the physical world and exchange data over networks. This breadth is what creates both the value and the distinctive security and privacy challenges addressed by ISO/IEC 27400.
2Which characteristic most clearly distinguishes an IoT device from a traditional IT endpoint such as a laptop?
A.It always runs a general-purpose operating system with a graphical interface
B.It interacts directly with the physical world through sensing and actuation
C.It requires a permanent wired power supply
D.It is always managed by a central IT department
Explanation: The defining trait of IoT devices is their ability to sense the physical environment and often act upon it through actuators. This cyber-physical coupling means a security compromise can have real-world physical consequences, not just data loss.
3Which of the following is a typical example of a consumer IoT device?
A.A corporate email server hosted in a data centre
B.A network-attached printer used in an office
C.A smart thermostat that learns household temperature preferences
D.A desktop workstation used for software development
Explanation: A smart thermostat is a networked physical device that senses the home environment, collects personal data about occupants, and can actuate heating systems, making it a classic consumer IoT product. Its continuous data collection about daily routines is also why consumer IoT raises significant privacy concerns.
4Why does the sheer scale of IoT deployments increase security risk for an organization?
A.Larger deployments always use weaker encryption algorithms
B.Scale makes it impossible to apply any security controls
C.Regulations exempt small deployments from security requirements
D.Thousands of connected endpoints expand the attack surface and make consistent management and monitoring harder
Explanation: Each connected device is a potential entry point, so large fleets multiply the attack surface. Keeping configurations, patches, and monitoring consistent across thousands of heterogeneous devices is operationally difficult, and a single unmanaged device can compromise the wider system.
5Which set of elements typically makes up an IoT system?
A.Only the physical devices themselves
B.IoT devices, networks and gateways, service platforms, and applications that together deliver the IoT service
C.A single cloud database storing sensor readings
D.A web browser and a mobile phone
Explanation: An IoT system is more than the devices: it includes the connectivity and gateways that link them, the platforms that process and store data, and the applications through which users interact. Security guidance in ISO/IEC 27400 therefore addresses the whole system, not just the device layer.
6Which sequence correctly orders the phases of a typical IoT system life cycle?
A.Operation, design, decommissioning, deployment
B.Design and development, deployment, operation and maintenance, decommissioning
C.Deployment, decommissioning, design, operation
D.Maintenance, deployment, design, disposal
Explanation: An IoT system is conceived and built first, then deployed into its environment, operated and maintained over its service life, and finally decommissioned. Security and privacy must be considered at every phase, from secure design through to safe disposal of devices and data.
7In ISO/IEC 27400 guidance, which groups are the primary stakeholders whose roles and responsibilities shape IoT security and privacy?
A.Only the end users of IoT devices
B.IoT users, IoT service providers, and IoT developers or manufacturers
C.Hardware retailers and shipping companies only
D.Government regulators exclusively
Explanation: ISO/IEC 27400 frames IoT security and privacy as a shared responsibility among those who use IoT systems, those who provide IoT services, and those who develop or manufacture the devices and components. Understanding who is responsible for which controls is a core learning objective of the Foundation course.
8What is an IoT service provider?
A.An entity that operates the services, platforms, or applications that make IoT device functionality available to users
B.Any company that sells SIM cards for mobile phones
C.The person who physically installs a device in a home
D.An organization that only manufactures device enclosures
Explanation: The IoT service provider runs the service layer of an IoT system, including platforms, cloud services, and applications that process device data and deliver functionality to users. Because this role controls data handling and service logic, it carries major security and privacy responsibilities.
9What does the shared responsibility concept mean for IoT security?
A.Only the device manufacturer is accountable for all security failures
B.Security duties are divided among developers, service providers, and users, and gaps appear when each assumes another party has acted
C.Users can delegate all security decisions to their internet service provider
D.Responsibility is shared only when devices are used in workplaces
Explanation: IoT security depends on coordinated action: developers build in safeguards, service providers protect platforms and data, and users configure and maintain devices correctly. A common failure pattern is the responsibility gap, where each party assumes the others have implemented a control and nobody actually has.
10Why do constrained IoT devices pose particular security challenges?
A.Their limited processing power, memory, and energy restrict the use of heavyweight cryptography, agents, and monitoring tools
B.They are too expensive to secure properly
C.They cannot connect to any network
D.Their small size makes them impossible to steal
Explanation: Many IoT devices are resource-constrained by design to reduce cost and power consumption. This limits the security mechanisms they can host, such as full cryptographic suites, endpoint agents, or extensive logging, so controls must be adapted and complemented at the gateway, network, or platform layer.

About the ISO 27400 Foundation Exam

The PECB ISO/IEC 27400 Foundation certification evaluates professional competence in governance, implementation, auditing, and management according to PECB standards.

Exam sponsor: PECB (Professional Evaluation and Certification Board). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

40 questions

Time Limit

1 hour

Passing Score

70%

Exam / Certification Fees

USD 500 exam-only

Exam sponsor website

Reported exam pass rate: Not published. PECB does not publish official exam-level pass rates. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

~25%

Fundamental Concepts of IoT Security & Privacy

IoT architecture layers (perception, network, application), device ecosystems, security and privacy challenges unique to IoT.

~25%

IoT Threat Landscape & Risk Assessment

IoT-specific threats (botnets, firmware tampering, eavesdropping, unauthorized physical access), risk identification, and impact evaluation.

~25%

ISO/IEC 27400 Security & Privacy Controls

Device authentication, secure boot, data encryption in transit/rest, firmware updates (OTA), privacy by design for IoT data.

~25%

IoT Lifecycle & Governance Management

IoT device commissioning, operational maintenance, patching protocols, supply chain security, and decommissioning/data wiping.

Preparing for the ISO 27400 Foundation Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 40 questions
  • Time limit: 1 hour
  • Exam / certification fees: USD 500 exam-only Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

ISO 27400 Foundation: Suggested Study Strategy

1Review the official PECB candidate handbook
2Practice scenario-based questions across all domains
3Pace yourself to answer all questions within the time limit

Frequently Asked Questions

What is the format of the PECB ISO 27400 Foundation exam?

The official exam consists of 40 questions over 1 hour. This practice set provides 100 English-language MCQs as a study aid.

Is this practice test free?

Yes, 100% free with detailed explanations.