Apart from Windows and macOS, what operating system options are there for client PCs installed to a local network?

You are advising a customer with an older$-$model Android smartphone. The customer wants to update to the latest version of Android, but using the update option results in a $$No updates available$$ message. What type of issue is this, and what advice can you provide?

A customer asks whether an iOS app that your company developed will also work on her Apple macOS computer. What issue does this raise, and what answer might you give?

You are advising a business that needs to provision video$-$editing workstations with four$-$way multiprocessing. Which retail Windows edition will allow them to make full use of this hardware?

You are advising a customer whose business is expanding. The business owner needs to provision an additional $30$ desktop computers, some of which will be installed at a second office location. The business is currently run with a workgroup network of five Windows $7$ Home Premium desktop computers and one file server. Why might you suggest licenses for an edition of Windows $10$ that supports corporate needs for the new computers and has upgrades for the old computers? Which specific edition$($s$)$ could you recommend?