3 Comments on “Which of the following will be the MOST effective solution in limiting access based on this requirement?”

1. Black says:

   March 9, 2017 at 6:29 am

   Isn’t the Air Gap?

   
   
   
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2. Admin says:

   May 3, 2017 at 10:42 am

   Yes, It’s Air Gap.

   An air gap, air wall or air gapping[1] is a network security measure employed on one or more computers to ensure that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.[2] The name arises from the technique of creating a network that is physically separated (with a conceptual air gap) from all other networks.

   Examples of the types of networks or systems that may be air gapped include:

   Military/governmental computer networks/systems;[8]
   Financial computer systems, such as stock exchanges;[9]
   Industrial control systems, such as SCADA in Oil & Gas fields;[10]

   ETC.

   COMPTIA LOVE OUR MONEY.

   
   
   
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3. Super_Mario says:

   May 7, 2018 at 8:49 pm

   Thank you both.
   An access control list (ACL), with respect to a computer file system, is a list of permissions attached to an object. An ACL specifies which users or system processes are granted access to objects, as well as what operations are allowed on given objects.
   Each entry in a typical ACL specifies a subject and an operation. For instance, if a file object has an ACL that contains (Alice: read,write; Bob: read), this would give Alice permission to read and write the file and Bob to only read it.
   In short, ACL works at USER level. We are not talking about users/software/data in here. We are talking about “machinery”/hardware, so an ACL is of little help in this case.

   As already mentioned by admin:” An air gap, air wall or air gapping[1] is a network security measure employed on one or more computers to ensure that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.[2] The name arises from the technique of creating a network that is physically separated (with a conceptual air gap) from all other networks.
   Examples of the types of networks or systems that may be air gapped include:
   • Military/governmental computer networks/systems;[8]
   • Financial computer systems, such as stock exchanges;[9]
   • Industrial control systems, such as SCADA in Oil & Gas fields;[10]
   • Life-critical systems, such as: Controls of nuclear power plants;
   • Computers used in aviation,[11] such as FADECs and avionics;
   • Computerized medical equipment;
   • Very simple systems, where there is no need to compromise security in the first place, such as: The engine control unit and other devices on the CAN bus in an automobile;
   • A digital thermostat for temperature and compressor regulation in home HVAC and refrigeration systems;
   • Electronic sprinkler controls for watering of lawns.

   The other two answers are simply to daft to even consider.
   So the answer is indeed: C- Air Gap

   
   
   
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