Network Time Protocol
Used to synchronize the time of all the computers in a network
NIC
Network Interface Card
NTP
Network Time Protocol
O
OFDM
Orthogonal
OSI
Open Systems Interconnection is the reference model for how data should travel between two devices on a network
OSPF
Open Shortest Path First is a routing protocol that is used more than RIP in larger scale networks because only changes to the routing table are sent to all the other routers in the network as opposed to sending the entire routing table at a regular interval, which is how RIP functions
P
Password
A sequence of characters that is used to authenticate requests to resources on a network
Personal Area Network
The interconnection of networking devices within a range of 10 meters
Physical layer
The first layer of the OSI model. Provides the hardware means of transmitting electrical signals on a data carrier
Ping
A utility program that verifies that a given Internet address exists and can receive messages. The utility sends a control packet to the given address and waits for a response.
PoE
Power over Ethernet is the means of transmitting electricity over the unused pairs in a category 5 Ethernet cable
POP3
Post Office Protocol 3 is used for receiving email
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