SANS 410 EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026
Industrial Control System (ICS) - Answers A device, or set of devices, that manages, commands,
directs, or regulates the behavior of other devices or systems.
ICS technology drivers - Answers Reliability, efficiency, safety, and ease of use.
Discrete Process - Answers A process where a specified quantity of material moves as a unit between
workstations and each unit maintains it's unique identity.
Batch Process - Answers A process that requires the mixing of raw materials, usually in a heated
vessel.
Continuous Process - Answers A physical system that is represented through variables that are
smooth an uninterrupted in time.
Hybrid Process - Answers reactive systems that intermix discrete and continuous processes
Process Engineer - Answers Designs the systems and processes used in the control environment.
Field Technician - Answers Maintains and repairs field devices
Programmer - Answers Implements the individual steps of the process code and deploys the code to
the controllers.
Operator - Answers Works in the operations center remotely managing and controlling the process
Owner/Operators - Answers Purchases and uses the system. responsible for safe operation and
meeting regulations.
Vendors - Answers Manufacture equipment and software
Integrator - Answers Design, configure, test, train, and refresh systems.
Government - Answers Implement guidance and regulation
programmable logic controller (PLC) - Answers Computer based, solid-state devices that control
industrial equipment and processes.
Remote terminal unit (RTU) - Answers Is installed to report local system information and otherwise
communicate with the upstream supervisory system. Connection typically made using RS-232 or RS-
485
Intelligent Electronic Device (IED) - Answers Used in the power industry primarily, and have limited
function, but contain their own control logic and are usually micro-controller based.
Digital Protective Relay (DPR) - Answers Contains a micro-controller with the specific purpose of
measuring voltages and currents to determining whether a fault in the system exists.
Phasor Measurement Unit (PMU) - Answers Measure voltages and currents at principle intersecting
locations on a power grid and can output accurately timestamped voltage and current phasors.
Communication Gateway - Answers Facilitates data acquitting, storage, transmission and protocol
conversion though the industrial data network. Widely used to apply timestamp data to logs for
locally connected RTUs
Communication Modules - Answers Connect FEP into networks of intelligent electronic devices (IED)
such as modbus or PROFIBUS.
Real Time Operating System (RTOS) - Answers Runs on an embedded device and is specialized in
running programs with specific scheduling paradigm.
Microkernels - Answers Responsible for Inter-process Communication (IPC), virtual memory, and
scheduling.
Ladder Diagram (Ladder logic) - Answers Relay logic displays and drawings and was written to be
understood by technicians. Operates on rules rather than producers or functions.
Each pass over is called a scan, and it occurs many times per second.
Function Block Diagram (FBD) - Answers Uses a series of blocks with a purpose and inputs and outputs
strung together. The order by which the blocks executes depends on the Vendor.
Structured Text (ST) - Answers A Series of instructions to include statements implemented by a
vendors use of an editor, such as programming languages like C.
Instruction List(IL) - Answers Similar to assembly language, this is a very low level language that
executes quickly and takes up less space.
Sequential Function Chart (SFC) - Answers Steps from top to bottom of instructions, executing
commands and transitions wait for conditions to be true to move forward.
Cyber Impact (PLC) - Answers Can include disruption to communications to the device, changing
configuration for accessing the device, modifying applications, and manipulating firmware.
, Control Loop Theory - Answers Used for calculating and controlling an environment or process based
on feedback.
PID Controller Theory - Answers Used to determine how to respond to the error.
Proportional Term - Answers Part of PID Controller Theory, where a response proportional to the
current error value is applied.
Integral Term - Answers Part of PID Controller Theory, where duration of an error and not just how far
off it is, is used to determine response.
Derivative Term - Answers Part of PID Controller Theory, where slope of Error over time multiplied by
the derivative gain is used to slow the rate of change of output to reduce overshoot.
Fuzzy Logic - Answers Taking logic statements and distilling them down in order to control machinery.
Instrumented Devices - Answers Devices that are ultimately responsible for monitoring, measuring, or
controlling the bits and pieces of an industrial system or process
Digital (Discrete) I/O - Answers and input or output where the specified value is communicated as
simple on or off signals.
Analog I/O - Answers Input or output where the specified value is communicated by varying the
voltage or current of a signal.
Time Synchronization - Answers based on an authoritative time source, and used to timestamp events
and data logged by an RTU
Global Positioning System (GPS) - Answers Widely recognized as one of the most accurate and reliable
time references available in remote areas.
Human Machine Interface (HMI) - Answers Graphic User Interface for the control of the process
usually organized as a model diagram of the process. Responsible for displaying important
information to the operator.
May facilitate manual control of the process.
Historian - Answers Historical data warehouse for ICS. Usually based on relational database
management such as Oracle or SQL Server.
Alarms - Answers How an operator is information of any event or condition that must be brought to
their attention.
Engineer Workstation - Answers Computer used to make changes or perform maintenance on
industrial control systems.
Project Files - Answers Contain details of control system, network architectures, configurations, logic
and parameters, as well as tag to I/O associations. These are major targets for hackers.
Run Time Libraries - Answers Used to expose and integrate disparate ICS technologies with each
other.
Front End Processor (FEP) - Answers Handles all communication actions, supervises the
communication with associated administration, and informs the central system.
Phase Data Concentrator (PDC) - Answers interfaces systems/equipment with incompatible protocols
and enables I/O communication between remote sites in a point-mulitpoint system without the need
fora SCADA Host.
Energy Management System (EMS) - Answers Computer based system used to monitor, control, and
optimize the performance of the generation and or/transmission system (power).
Building Management System (BMS) - Answers computer based control system installed in buildings
that controls and monitors the buildings mechanical and electrical equipment such as ventilation.
Occasionally linked to access control.
Contingency Analysis - Answers the process where potentially harmful events, thresholds, or
configurations are identified so that contingent actions may be taken if the criteria are met. Examples:
Tripping Breakers, opening/closing valves, or sounding alarms.
Process Control Systems - Answers enable automation by monitoring manufacturing environment and
electronically controlling the process or manufacturing flow based on various set points.
Safety Instrumented System - Answers devices or systems that monitor for or remediate any situation
that may impact plant safety.
Safety Instrumented Functions (SIF) - Answers the specific control functions performed by a SIS.
Distributed Control System (DCS) - Answers utilizes custom designed controllers, propriety
interconnection protocols, and communication protocols across a geographically distributed systems
used to control the manufacturing process.
Industrial Control System (ICS) - Answers A device, or set of devices, that manages, commands,
directs, or regulates the behavior of other devices or systems.
ICS technology drivers - Answers Reliability, efficiency, safety, and ease of use.
Discrete Process - Answers A process where a specified quantity of material moves as a unit between
workstations and each unit maintains it's unique identity.
Batch Process - Answers A process that requires the mixing of raw materials, usually in a heated
vessel.
Continuous Process - Answers A physical system that is represented through variables that are
smooth an uninterrupted in time.
Hybrid Process - Answers reactive systems that intermix discrete and continuous processes
Process Engineer - Answers Designs the systems and processes used in the control environment.
Field Technician - Answers Maintains and repairs field devices
Programmer - Answers Implements the individual steps of the process code and deploys the code to
the controllers.
Operator - Answers Works in the operations center remotely managing and controlling the process
Owner/Operators - Answers Purchases and uses the system. responsible for safe operation and
meeting regulations.
Vendors - Answers Manufacture equipment and software
Integrator - Answers Design, configure, test, train, and refresh systems.
Government - Answers Implement guidance and regulation
programmable logic controller (PLC) - Answers Computer based, solid-state devices that control
industrial equipment and processes.
Remote terminal unit (RTU) - Answers Is installed to report local system information and otherwise
communicate with the upstream supervisory system. Connection typically made using RS-232 or RS-
485
Intelligent Electronic Device (IED) - Answers Used in the power industry primarily, and have limited
function, but contain their own control logic and are usually micro-controller based.
Digital Protective Relay (DPR) - Answers Contains a micro-controller with the specific purpose of
measuring voltages and currents to determining whether a fault in the system exists.
Phasor Measurement Unit (PMU) - Answers Measure voltages and currents at principle intersecting
locations on a power grid and can output accurately timestamped voltage and current phasors.
Communication Gateway - Answers Facilitates data acquitting, storage, transmission and protocol
conversion though the industrial data network. Widely used to apply timestamp data to logs for
locally connected RTUs
Communication Modules - Answers Connect FEP into networks of intelligent electronic devices (IED)
such as modbus or PROFIBUS.
Real Time Operating System (RTOS) - Answers Runs on an embedded device and is specialized in
running programs with specific scheduling paradigm.
Microkernels - Answers Responsible for Inter-process Communication (IPC), virtual memory, and
scheduling.
Ladder Diagram (Ladder logic) - Answers Relay logic displays and drawings and was written to be
understood by technicians. Operates on rules rather than producers or functions.
Each pass over is called a scan, and it occurs many times per second.
Function Block Diagram (FBD) - Answers Uses a series of blocks with a purpose and inputs and outputs
strung together. The order by which the blocks executes depends on the Vendor.
Structured Text (ST) - Answers A Series of instructions to include statements implemented by a
vendors use of an editor, such as programming languages like C.
Instruction List(IL) - Answers Similar to assembly language, this is a very low level language that
executes quickly and takes up less space.
Sequential Function Chart (SFC) - Answers Steps from top to bottom of instructions, executing
commands and transitions wait for conditions to be true to move forward.
Cyber Impact (PLC) - Answers Can include disruption to communications to the device, changing
configuration for accessing the device, modifying applications, and manipulating firmware.
, Control Loop Theory - Answers Used for calculating and controlling an environment or process based
on feedback.
PID Controller Theory - Answers Used to determine how to respond to the error.
Proportional Term - Answers Part of PID Controller Theory, where a response proportional to the
current error value is applied.
Integral Term - Answers Part of PID Controller Theory, where duration of an error and not just how far
off it is, is used to determine response.
Derivative Term - Answers Part of PID Controller Theory, where slope of Error over time multiplied by
the derivative gain is used to slow the rate of change of output to reduce overshoot.
Fuzzy Logic - Answers Taking logic statements and distilling them down in order to control machinery.
Instrumented Devices - Answers Devices that are ultimately responsible for monitoring, measuring, or
controlling the bits and pieces of an industrial system or process
Digital (Discrete) I/O - Answers and input or output where the specified value is communicated as
simple on or off signals.
Analog I/O - Answers Input or output where the specified value is communicated by varying the
voltage or current of a signal.
Time Synchronization - Answers based on an authoritative time source, and used to timestamp events
and data logged by an RTU
Global Positioning System (GPS) - Answers Widely recognized as one of the most accurate and reliable
time references available in remote areas.
Human Machine Interface (HMI) - Answers Graphic User Interface for the control of the process
usually organized as a model diagram of the process. Responsible for displaying important
information to the operator.
May facilitate manual control of the process.
Historian - Answers Historical data warehouse for ICS. Usually based on relational database
management such as Oracle or SQL Server.
Alarms - Answers How an operator is information of any event or condition that must be brought to
their attention.
Engineer Workstation - Answers Computer used to make changes or perform maintenance on
industrial control systems.
Project Files - Answers Contain details of control system, network architectures, configurations, logic
and parameters, as well as tag to I/O associations. These are major targets for hackers.
Run Time Libraries - Answers Used to expose and integrate disparate ICS technologies with each
other.
Front End Processor (FEP) - Answers Handles all communication actions, supervises the
communication with associated administration, and informs the central system.
Phase Data Concentrator (PDC) - Answers interfaces systems/equipment with incompatible protocols
and enables I/O communication between remote sites in a point-mulitpoint system without the need
fora SCADA Host.
Energy Management System (EMS) - Answers Computer based system used to monitor, control, and
optimize the performance of the generation and or/transmission system (power).
Building Management System (BMS) - Answers computer based control system installed in buildings
that controls and monitors the buildings mechanical and electrical equipment such as ventilation.
Occasionally linked to access control.
Contingency Analysis - Answers the process where potentially harmful events, thresholds, or
configurations are identified so that contingent actions may be taken if the criteria are met. Examples:
Tripping Breakers, opening/closing valves, or sounding alarms.
Process Control Systems - Answers enable automation by monitoring manufacturing environment and
electronically controlling the process or manufacturing flow based on various set points.
Safety Instrumented System - Answers devices or systems that monitor for or remediate any situation
that may impact plant safety.
Safety Instrumented Functions (SIF) - Answers the specific control functions performed by a SIS.
Distributed Control System (DCS) - Answers utilizes custom designed controllers, propriety
interconnection protocols, and communication protocols across a geographically distributed systems
used to control the manufacturing process.
