a telecommunications operator has contacted me for a job interview. The position I applied for, requires these skills:
routing, switching, VoIP, Wireless
Microsoft OS e/o Linux OS and their architecture
Databases (Microsoft SQL Server / My SQL)
Networking in LAN and WAN
In particular could you suggest me a guide for Networking in LAN and WAN? what does it refer?
And what about routing and switching? Do I have to know only routing and switching protocols?