Computer Systems & Software Updates Flashcards

A marine technician is troubleshooting a software conflict between the vessel's radar and ECDIS. What is the most effective first diagnostic step?

Answer: Check the software version compatibility matrix in the manufacturer's documentation

Manufacturer compatibility matrices list which software versions of each system are tested and approved to work together, making them the first reference for integration issues.

Which of the following describes a 'cold spare' approach to marine computer redundancy?

Answer: A backup unit kept unpowered and ready to replace a failed primary unit

A cold spare is an unpowered backup unit stored onboard that can be installed to replace a failed primary system, but requires manual activation and configuration.

What is the role of a 'digital signature' in a marine software update package?

Answer: To verify that the update file was created by the legitimate manufacturer and has not been tampered with

A digital signature uses cryptographic hashing to prove the update originated from the authorized manufacturer and that the file has not been altered.

A vessel's cargo management computer loses network connectivity to the engine control room after a software update. What is the most likely cause?

Answer: Firewall rules or IP address settings were reset to defaults by the update

Software updates can reset network configuration settings including firewall rules and IP addresses to factory defaults, breaking existing network connectivity.

In the context of marine computer systems, what does 'redundancy' mean?

Answer: Providing backup systems that can take over if a primary system fails

Redundancy in marine systems means having independent backup equipment ready to assume the functions of a primary system if it fails, ensuring continued safe operation.

After updating the software on a vessel's dynamic positioning (DP) system, what test must be performed before relying on the system operationally?

Answer: A controlled capability test in a safe area to verify the DP system holds position accurately

Following any DP software update, a capability and position-keeping test must be completed in controlled conditions before the vessel relies on DP for critical operations.

A marine electronics technician discovers that the vessel's bridge computer is running an operating system that has not received updates for three years. What is the primary concern?

Answer: The system is vulnerable to cybersecurity threats due to unpatched security flaws

An unpatched operating system accumulates known security vulnerabilities that can be exploited by malware or cyber attacks, posing risk to vessel safety and data integrity.