private key
The part of a public-private key pair that is always kept private. The private key encrypts the signature of a
message to authenticate the sender. The private key also decrypts a message that was encrypted with the
public key of the sender.
PRNG
Pseudo-Random Number Generator. PRNG is an algorithm for generating a sequence of numbers whose
properties approximate the properties of sequences of random numbers.
PSK
Pre-shared key. A unique shared secret that was previously shared between two parties by using a secure
channel. This is used with WPA security, which requires the owner of a network to provide a passphrase to
users for network access.
PSU
Power Supply Unit. PSU is a unit that supplies power to an equipment by converting mains AC to low-voltage
regulated DC power.
public key
The part of a public-private key pair that is made public. The public key encrypts a message and the message
is decrypted with the private key of the recipient.
PVST
Per-VLAN Spanning Tree. PVST provides load balancing of VLANs across multiple ports resulting in optimal
usage of network resources.
PVST+
Per-VLAN Spanning Tree+. PVST+ is an extension of the PVST standard that uses the 802.1Q trunking
technology.
QoS
Quality of Service. It refers to the capability of a network to provide better service and performance to a
specific network traffic over various technologies.
RA
Router Advertisement. The RA messages are sent by the routers in the network when the hosts send multicast
router solicitation to the multicast address of all routers.
RADAR
Radio Detection and Ranging. RADAR is an object-detection system that uses radio waves to determine the
range, angle, or velocity of objects.
RADIUS
Remote Authentication Dial-In User Service. An Industry-standard network access protocol for remote
authentication. It allows authentication, authorization, and accounting of remote users who want to access
network resources.
AOS-W 6.5.3.x | User Guide Glossary of Terms | 1146
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