IT 369 FINAL EXAM UPDATED QUESTIONS AND ANSWERS
What does SCADA stand for? - CORRECT ANSWER✅✅Supervisory Control and Data Acquisition
What do ICS, DCS and PCS stand for? - CORRECT ANSWER✅✅ICS - industrial control systems
DCS - distributed control systems
PCS - process control systems
What is HSPD-7 and what did it do? - CORRECT ANSWER✅✅Homeland security presidential directive 7.
establishes policy for federal agencies to identify and prioritize US critical infrastructure and and other
resources against terrorist attacks
What are some resources or Critical infrastructure listed under HSPD-7? - CORRECT
ANSWER✅✅Utilites, Nuclear facilities, bulk electronics, chemical facilities.
What do scadas provide? - CORRECT ANSWER✅✅real-time data on production, reduces the operation
cost.
Why are scadas dangerous? - CORRECT ANSWER✅✅They use standards and are very interconnected
allowing for many vulnerabilities throughout the network.
What do some SCADA systems control? - CORRECT ANSWER✅✅Water and wastewater, electrical
utilities, gas pipelines, etc. Important stuff.
What are some scada components? - CORRECT ANSWER✅✅Master terminal
remote terminal
human/machine interface
,communication
What are some attributes of a SCADA? - CORRECT ANSWER✅✅highly distributed
geographically separated
centralized control
field devices that can control more local parts of the system
What is a DCS or distributed control system? - CORRECT ANSWER✅✅a supervisor control of several
combined systems that are local.
Uses programmable logic controllers and feedback loops
Ex: control center for water, gas, and electric in a city.
What is a programmable logic controller? - CORRECT ANSWER✅✅computer solid state device
controls industrial equipment
regulates flow of something
Location differences: SCADA and DCS and PLC? - CORRECT ANSWER✅✅SCADA - dispersed across globe
DCS and PLC - factory centered (local)
, Communication differences: SCADA and DCS and PLC? - CORRECT ANSWER✅✅SCADA - long distance
and slow
DCS and PLC - high speed, local are networks
Control differences: SCADA and DCS and PLC? - CORRECT ANSWER✅✅SCADA - supervisory level
DCS and PLC - close feedback loops
What are SCADAs so important? - CORRECT ANSWER✅✅CI's are 80-90% privately owned, but very
important to nation so SCADA's provide a level or required oversight
What are some challenges with SCADA? - CORRECT ANSWER✅✅complex, expensive, outdated
equipment, non-standard drivers
must connect to networks
What are human machine interfaces? - CORRECT ANSWER✅✅maps, video projection, printouts
What are remote terminal units? - CORRECT ANSWER✅✅electronic systems at control points and
specific locations
How has SCADA changed overtime? - CORRECT ANSWER✅✅Cheaper - uses TCP/IP over voice but is
vulnerable to malware and cyber attacks
Whats the relation of ICS to SCADAs? - CORRECT ANSWER✅✅SCADA is a subset of ICS.
What are some CI things that would need control/monitoring? - CORRECT ANSWER✅✅physical process
variation in state
actions needed to correct state
What does SCADA stand for? - CORRECT ANSWER✅✅Supervisory Control and Data Acquisition
What do ICS, DCS and PCS stand for? - CORRECT ANSWER✅✅ICS - industrial control systems
DCS - distributed control systems
PCS - process control systems
What is HSPD-7 and what did it do? - CORRECT ANSWER✅✅Homeland security presidential directive 7.
establishes policy for federal agencies to identify and prioritize US critical infrastructure and and other
resources against terrorist attacks
What are some resources or Critical infrastructure listed under HSPD-7? - CORRECT
ANSWER✅✅Utilites, Nuclear facilities, bulk electronics, chemical facilities.
What do scadas provide? - CORRECT ANSWER✅✅real-time data on production, reduces the operation
cost.
Why are scadas dangerous? - CORRECT ANSWER✅✅They use standards and are very interconnected
allowing for many vulnerabilities throughout the network.
What do some SCADA systems control? - CORRECT ANSWER✅✅Water and wastewater, electrical
utilities, gas pipelines, etc. Important stuff.
What are some scada components? - CORRECT ANSWER✅✅Master terminal
remote terminal
human/machine interface
,communication
What are some attributes of a SCADA? - CORRECT ANSWER✅✅highly distributed
geographically separated
centralized control
field devices that can control more local parts of the system
What is a DCS or distributed control system? - CORRECT ANSWER✅✅a supervisor control of several
combined systems that are local.
Uses programmable logic controllers and feedback loops
Ex: control center for water, gas, and electric in a city.
What is a programmable logic controller? - CORRECT ANSWER✅✅computer solid state device
controls industrial equipment
regulates flow of something
Location differences: SCADA and DCS and PLC? - CORRECT ANSWER✅✅SCADA - dispersed across globe
DCS and PLC - factory centered (local)
, Communication differences: SCADA and DCS and PLC? - CORRECT ANSWER✅✅SCADA - long distance
and slow
DCS and PLC - high speed, local are networks
Control differences: SCADA and DCS and PLC? - CORRECT ANSWER✅✅SCADA - supervisory level
DCS and PLC - close feedback loops
What are SCADAs so important? - CORRECT ANSWER✅✅CI's are 80-90% privately owned, but very
important to nation so SCADA's provide a level or required oversight
What are some challenges with SCADA? - CORRECT ANSWER✅✅complex, expensive, outdated
equipment, non-standard drivers
must connect to networks
What are human machine interfaces? - CORRECT ANSWER✅✅maps, video projection, printouts
What are remote terminal units? - CORRECT ANSWER✅✅electronic systems at control points and
specific locations
How has SCADA changed overtime? - CORRECT ANSWER✅✅Cheaper - uses TCP/IP over voice but is
vulnerable to malware and cyber attacks
Whats the relation of ICS to SCADAs? - CORRECT ANSWER✅✅SCADA is a subset of ICS.
What are some CI things that would need control/monitoring? - CORRECT ANSWER✅✅physical process
variation in state
actions needed to correct state
