A metropolitan area network (MAN) is a hybrid between a LAN and a WAN. Storage area networks (SANs) provide a high-speed infrastructure to move data between storage devices and file servers. Advantage. 1  Performance is fast.  Availability is high because of the redundancy features available.
Walking pneumonia is generally treated with antibiotics. Mild infections are often not treated because they tend to clear on their own. With treatment, most people begin to feel better within a few days.
There is a certain level of immunity that occurs after someone has a case of walking pneumonia. It isn't permanent, though, and it's unclear how long it lasts. So you could at some point develop walking pneumonia again. When it does recur, it may be milder.