2.6-2.7

Question 1

Embedded systems

Answer 1

Software a d hardware designed for a function like traffic lights or medical imagining systems

Running on system on a chip (soc) which has multiple components

A Small rasberry pi has cache memory, external interface support, flash memory, power consimption etc

Sometimes cant be upgraded so outdated become security issues

Question 2

Fpga

Answer 2

Field programmable gate array that can be configed after manufacturing that can be programmed afterwards, its an array of logic blocks for future programming

Question 3

Scada/ics

Answer 3

Supervisory control and data acquisition system or industrial control system

For large amounts of insdustrial equipment to be networked and used
Can also mass Config, best not to connect to internet

Question 4

Iot

Answer 4

Smart devices rhat can connect many systems like air con connected apps, video door bells, smart watch, heating management remote etc internet of things devices

Question 5

Voip

Answer 5

Voice over ip telephones that allow voice comms that act as a stand alone com

Question 6

Rtos

Answer 6

Real time os that desgined to work on industrial devices and equipment thet works at specific times and is the main process not subprocess that is used

Question 7

Embedded system
Communications

Answer 7

5g at the moment 10gig /s

Question 8

Subscriber identity
Module

Answer 8

Sim that identifies network to the iot device

Question 9

Narrow band

Answer 9

Not cellular but across a narrow range of frequencies with scada equipment and such

Question 10

Zigbee

Answer 10

Ieee standard alternative to wifi and bluetooth over longer distances with less power and able to create a meshed network

Ism band 900mhz to 2.4 ghz

Question 11

Embedded system contraints

Answer 11

Low cost so not high security, limited features, difficult to upgrade , perhaps no direct power source, may need to change up battery often

Question 12

Physical security

Answer 12

Barricades/bollards
Access controls vestibules
Alarms
Signs
Video surveillance
Industrial camoflage
Security guard (two person integrity) with access lists
Biometrics
Door access control
Cable locks for equipment like laptops
Usb data blocker to prevent juice jacking
Proper lighting
Fencing if its ok to be obvious and they can see inside
Fire suppression (not water) Dupont fm200
Sensors identify movement, proximity, moisture, temperature and noise sensors
Drones for larger areas that are difficult to access for specific situations
Faraday cage, stops radio signals but not all can even block for helping and calling out tho
Screened subnet separate network that has controlled access, but doesnt have access to internal network
Protectect distribution to protect cabling

Question 13

Airgap

Answer 13

Physical disconnection from internal or scada networks from the other networks

Question 14

Vaults and safes

Answer 14

An entire secure room to protect data and files, protect from disaster or theft

Question 15

Hot and cold aisles

Answer 15

Racks constantly generate heat, a cooling system helps temp control, so separation of hot and cold aisles, where cold aisles are send cold air and hot air is sent back to cool again and works in a cycle

Question 16

Data destruction and media sanitization

Answer 16

Legal issues need to be considered
Protect from dumpster diving, locks and shred, burn or pulp paper
To repurposing but full delete of data first before repurposed

May need to destroy drive physically, happy screw or electromagnetic degaussing or incinerate

Question 17

Certification of destruction

Answer 17

A third parties evidence that destruction was done

Question 18

Santize media

Answer 18

A purge to remove a section of the file or database

A wipe will make sure that data cant be restored on a system that is being repurposed