D

Data aggregation, 539-41

Data closet, 603

Data frame, 39

Data switches, 16

Datagram, 38, 57

Deliver Configuration Wizard, 178, 179

Denial-of-Service (DoS), 244, 247, 301

Dense wavelength division multiplexing (DWDM), 96, 97-98

Destination-based switching, 228

Device, 8, 20

status, examining, 165

window, 175

Dial-in protocols, 251

Dial-in technologies, 48, 49-52

cable modems, 51-52

DSL, 50-51

ISDN, 49-50

Digital Media System (DMS), 470-72

Digital Subscriber Line (DSL), 13, 50-51, 581, 615-16

asymmetric, 51

Lite, 51

Distance-vector routing, 495-96

Distribution system, 346

Domain Name System (DNS), 58, 600-601

Domains 192-196

Dotted-decimal format, 68

Dual-home configurations, 300

Duplicate address detection (DAD), 83

Dynamic access lists, 281-82

Dynamic files, 140

Dynamic Host Configuration Protocol (DHCP), 206, 358, 599

Dynamic routing, 481