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DAPI
data-MDT
DB
DCCA
DCE
DCP
DDoS
DEM
de-mux
default SAP
degree-2
DEI
demultiplexer
deprecated
DES
device
Device Administrator
DF
DGE
DHCP
DHCP client
DHCP relay
DHCP relay agent
DHCP server
DHCP snooping
Diameter
Diffie-Hellman key exchange
Dijkstra
DLCI
DM
DMM
DNAI
DNN
DNS
DNU
DoD
DOIC
DoS
Dot1N
DP
DPA
DPD
DPI
DPR
DR
DRA
DRR
DRX
DS Lite
DS-N
DSAP
DSCP
DSL
DSL module
DSLAM
DSU
DTD
DTE
DU
Dual management
Dual stack
DUS
DVD
DVD-ROM
DWDM
dynamic host