MAU Architecture and NIC Functionality
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Questions and Answers

What is the primary function of the NIC?

  • To control the Avionics Standard-Communication Bus
  • To manage the Backplane Interface Controller
  • To transmit and receive ASCB and LAN data (correct)
  • To program the Aircraft Personality Modules

    • What type of memory is used in the BIC frame buffer?

  • SRAM (Static Random Access Memory)
  • EPROM (Erasable Programmable Read-Only Memory)
  • ROM (Read-Only Memory)
  • Dualport RAM (Random Access Memory) (correct)

    • What type of data is programmed into the Aircraft Personality Modules?

  • Custom data for the aircraft (correct)
  • Controller Area Network data
  • ASCB and LAN data
  • System identification data only

    • What is the purpose of the software firewalls in the MAU?

    <p>To protect the MAU from malicious data</p> Signup and view all the answers

    What is the function of the ASCB coupler?

    <p>To connect the ASCB to the NIC</p> Signup and view all the answers

    What is the name of the bus that connects client modules to the backplane bus?

    <p>Bus Interface Controller (BIC)</p> Signup and view all the answers

    What is the primary purpose of an ASCB terminator?

    <p>To absorb signals so that they do not reflect back down the line</p> Signup and view all the answers

    What is the primary function of the NIC in a Local Area Network?

    <p>To control data transmission on the LAN bus</p> Signup and view all the answers

    What type of cable is used in the LAN?

    <p>Thin coaxial cable</p> Signup and view all the answers

    What is the primary use of the Local Area Network (LAN) in an aircraft?

    <p>For development, maintenance, and software loading</p> Signup and view all the answers

    What is the frequency of operation of the Controller Area Network (CAN) bus?

    <p>500 kHz</p> Signup and view all the answers

    What protocol is used in the Local Area Network (LAN)?

    <p>TCP/IP</p> Signup and view all the answers

    What is a characteristic of the CAN bus network?

    <p>No master controls when individual nodes have access to read and write data.</p> Signup and view all the answers

    What is labeled with a unique arbitration ID in a CAN frame?

    <p>The frame itself</p> Signup and view all the answers

    What happens when multiple nodes try to transmit a message onto the CAN bus at the same time?

    <p>The node with the highest arbitration ID gets bus access.</p> Signup and view all the answers

    What is a feature of the CAN specification?

    <p>A method of error checking on each frame's contents.</p> Signup and view all the answers

    What is the construction of the CAN bus network?

    <p>Twisted, shielded pair with terminators.</p> Signup and view all the answers

    What happens to lower priority nodes when multiple nodes try to transmit a message onto the CAN bus at the same time?

    <p>They wait until the bus becomes available before trying to transmit again.</p> Signup and view all the answers

    What is the primary purpose of the AIOP modules?

    <p>To collect data from avionic and flight control systems</p> Signup and view all the answers

    How do the AIOP modules communicate with the servos?

    <p>Through a bidirectional CAN data bus</p> Signup and view all the answers

    What is the purpose of the Linear Variable Differential Transformers (LVDTs)?

    <p>To provide analogue feedback to the Primary Actuator Control Electronics (P-ACE) System</p> Signup and view all the answers

    How many AIOP modules operate in each channel?

    <p>Two</p> Signup and view all the answers

    What is the function of the Flight Guidance Control System (FGCS)?

    <p>To provide yaw damper and turn coordination signals</p> Signup and view all the answers

    What is the purpose of the CAN bus interface in the Flight Control Modules (FCMs)?

    <p>To transmit digital feedback data to the AIOP modules</p> Signup and view all the answers

    What is the primary advantage of the AFDX technology?

    <p>Secure and reliable communications</p> Signup and view all the answers

    What is the function of the AFDX switches?

    <p>To manage data traffic on the network</p> Signup and view all the answers

    What is the characteristic of the AFDX cable?

    <p>It is a full-duplex physical link</p> Signup and view all the answers

    What is the composition of the AFDX cable?

    <p>Four wires, two pairs for transmission and reception</p> Signup and view all the answers

    What is the significance of the term 'full-duplex' in the context of AFDX cable?

    <p>The subscriber can simultaneously transmit and receive data</p> Signup and view all the answers

    What is the data rate of the AFDX technology?

    <p>10 Mb/s and 100 Mb/s</p> Signup and view all the answers

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