L
Last Known Good Configuration

The control set stored in the Registry that was used the last time the computer was successfully booted and logged onto. You can revert back to this control set using the tools in advanced startup options by pressing F8 at startup.

Layer 2 Tunneling Protocol (L2TP)

A protocol that is used to secure data transfer and to prevent data from being modified during transit between two computers on a network.

LC connector

A fiber-optic type of connector that is used for local connections within the network closet.

lease

A specified time that a client is allowed to have an IP address as defined by the scope of a DHCP server.

light-emitting diodes (LEDs)

Special lights that are installed in network devices, such ...

Get Network+™ Fast Pass now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.