Privilege Level:-
1. Those rights granted to a user or a group of users by the network administrator that determine the functions the user can execute. Rights form an important component of network security, and can include supervisor rights, read, write, erase, and modify rights, and several others.
2. A. form of protection built into Intel microprocessors. The Intel microprocessor architecture provides two broad classes of protection. One is the ability to separate tasks by giving each task a separate address space. The other mechanism operates within a task to protect the operating system and special processor registers from access by applications. Within a task, four .privilege levels are defined. The innermost ring is assigned privilege level 0 (the highest, or most trusted level) and the outermost ring is privilege level 3 (the lowest, or least privileged level). Rings 1 and 2 are reserved for the operating system and operating system extensions; level 3 is available to applications. This protection is maintained by complex circuitry in the processor's memory management unit.
Propagation delay:-
In communications, any delay between the times a signal enters the transmission channel and the time it is received. This delay is relatively small across a local-area network (LAN), but can become considerable in satellite communications, where the signal must travel form one earth station to the satellite and back to earth again. Unusually long delays may require specialized hardware to ensure that the link is not broken prematurely.
PROTOCOL:-
A Novell NetWare server utility that displays a list of the protocols and frame types registered on the server.
Protocol:-
In networking and communications, the formal specification that defines the procedures to follow when transmitting and receiving data. Protocols define the format, timing, sequence and error checking used on the network.
PTT :-
Abbreviation for Postal Telephone and Telegraph. The official government body that administers and manages the telecommunications systems in many European countries.
Public Data Network:-
Abbreviated PDN. Any government owned or-controlled commercial packet-switched network, offering wide-area services to data-processing users. |
