SNMP, UPS, WAP, and MIB are key components of network management systems. SNMP is an Internet standard protocol for managing devices on IP networks like routers, switches, and servers. UPS provides emergency power when utility mains fail and range from small units for a single computer to large systems for data centers. WAP is an open standard for web browsing on mobile devices, while MIB is a virtual database used for managing network entities, most often with SNMP.

1. How Network Management Systems Work
● Simple Network Management Protocol (SNMP)
● Uninterruptible Power Supply (UPS)
● Wireless Application Protocol
● Management Information Base (MIB)

2. Simple Network Management Protocol
● SNMP is an "Internet-
standard protocol for
managing devices on IP
networks.
● Devices that typically
support SNMP include
routers, switches, Servers,
workstations, printers,
modem tracks, and more.

3. Uninterruptible Power Supply
● UPS is an electrical apparatus
that provides emergency
power to a load when the input
power source, typically the
utility mains, fails.
● UPS units range in size from
units designed to protect a
single computer without a
video monitor (around 200 VA
rating) to large units powering
entire data centers, buildings,
or even cities.

4. Wireless Application Protocol
● Wireless Application
Protocol (WAP) is an open
international standard.
● A WAP browser is a
commonly used web
browser for small mobile
devices such as cell
phones.

5. Management information base
●
management information base
(MIB) is a virtual database used
for managing the entities in a
communications network.
●
Most often associated with the
Simple Network Management
Protocol (SNMP), the term is
also used more generically in
contexts such as in OSI/ISO
Network management model.

6. References
● Wikipedia
http://ja.wikipedia.org/wiki
● Gazou-navi
http://gazou-navi.info/
● Google
http://www.google.co.jp/