U

Unix, 71, 139

unshielded twisted-pair (UTP) cable, 86

up (defined), 11

updates, 337-338

upgrading the network operating system (NOS), 141

upper layers of the OSI Model, 391

user accounts

Administrator account, 320-322

backups, 312

contact information, 242

creating, 239-241

delegation, 244

deleting, 247

disabling, 243, 246

domain, 238

enabling, 246

encryption, 244

group membership, 238, 247-249

Guest account, 321-322

Linux operating system, 351-352

local, 238

logon name, 24, 243

logon script, 245, 249-250

passwords, 137, 238, 243, 245-246, 318-319

profile information, 244-245

properties, 238, 241-245

security, 137-138, 244, 317-322

service accounts, 322

sharing, 326

smart cards, 244

user IDs, 22-25

user profile, 325

user rights, 322-323

user templates, 56-57

username, 22-25, 238, 317

users

downtime, 377-378, 383

library, 294-295

managing, 232-233

network server, 285

permissions, 252-254, 262-264

security policies, 326

shares, 254-255

training, 293-294, 384

utilities, 234. See also programs

UTP (unshielded twisted-pair) cable, 86