note: this is a multi-part question. once an answer is submitted, you will be unable to return to this part. consider the following propositions: l: the file system is locked. q: new messages will be queued. n: the system is functioning normally. b: new messages will be sent to the message buffer. the goal of this exercise is to determine whether the following system specifications are consistent: if the file system is not locked, then new messages will be queued. if the file system is not locked, then the system is functioning normally, and conversely. if new messages are not queued, then they will be sent to the message buffer. if the file system is not locked, then new messages will be sent to the message buffer. new messages will not be sent to the message buffer. are the given system specifications consistent?

Constant system specifications. If it is possible to give the proposition variables truth values that make each proposition true, then the proposition list is consistent.
Users are unable to access the file system whenever the system software is upgraded. Users can save new files if they have access to the file system.
Users are unable to save new files if the operating system is not being updated.
Only if the router supports the new address space can it deliver packets to the edge system.
Installing the most recent software release is required for the router to support the new address space.
If the most recent software release is installed, the router can send packets to the edge system.

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