000			00647nam a2200253Ia 4500
001			42121
005			20250221154627.0
008			250214s9999||||xx |||||||||||||| ||und||
020			_a9788131805022
100			_aKhurana, Monika
245		0	_aData communication system
260			_aNew Delhi
260			_bFirewall Media
260			_c2009
300			_axii, 239p. : ill.
500			_aIncludes index.
650			_aComputer networks
650			_aData communication system
650			_aData transmission networks
650			_aNetwork security
650			_aTCP/IP protocol
650			_aWireless communication
942			_cBK
999			_c57912 _d57912