Lag indicator
Latency
Layer 2 switches
Layer 3 and 4 switches
Layer 4-7 switches
Lead indicator
Leadership
Leased line
Legacy system
Level of assurance

Librarian
Licensing agreement
Life cycle
Likelihood
Limit check
Link editor (linkage editor)
Literals
Local area network [LAN]
Log
Logical access

Logical access controls
Logoff
Logon
Logs/log file
Loss event