Re: La^.p Ma.ng Internet ta.i ca'c tru+o+`ng..)

["Phuong Vo Van" <phuongvv@hotmail.com>]

Hello Ba'c Ngo Ha.,DX, Utsay, DV cu\ng ca'c ba'c,

Ca'i nhie^.t ti\nh cu?a ca'c ba'c la\ nguye^n nha^n cho ca'i y' kie^'n sau 
dda^y:

"ba?o tro*. mo^.t pha^`n thie^'t la^.p ma.ng Internet  cho tru*o*`ng ho.c"

Theo to^i hie^?u "xa~" thi\ go^\m co' nhie^\u phu+o+\ng
Xa~ thi\ co' 1 cho dde^'n nhie^\ tru+o+\ng trung hoc.
Mo^~i phu+o+\ng thi\  co' the^? co' tru+o+\ng tie^?u ho.c rie^ng.

La\m 1 ba\i ti'nh ddo+n gia?n :

So^' lu+o+.ng PC + gia' tie^\n
cho mo^~ ddie^?m ddu+o+.c ba~o tro+.:	 ~=  ((5PC+3PC)/2)*1000 $US
Component:
NIC(Network interface card)		~= 50$US (3com etc..)*4
Route					~= 2000$US( Cisco .etc..)
Switch 					~= 1000$US ( 3com .etc..)
64 Kb Modem( minimum)			~= 1000$US (Hitachi .etc..)
Hub (10-16 port)				~= 350$US(Centrecom. etc..)
Ethernet Cables				~= 3-5 m + Cross field(collecting points) ~= 450$US
Client/server software			????
Intranet software				????

Vi' du.:
VN co' 300 xa~ ; mo^~ i xa~ ti'nh  trung bi\nh co':
					 5 tru+o+\ng trung ho.c ,
					1 thu+ vie^.n
					10 phu+o+\ng :
						15 tru+o+\ng tie^?u ho.c
Gi'a tha\nh cho 1 Xa~ = 21*(4*1000)  = 84000 $US
Gia' tha\nh cho Extra Component	  ~= 21*5000= 105000$US
Gia' tha\nh cho 300 Xa~: 	300 *(21*4*1000) = 25200000$US = 25 trie^.u 200 
nga\n $US
Gia' tha\nh cho Extra Essential Components ~= 300*21*(NIC + Route + Swich + 
Modem + Hub+ ..etc ~= 30 trie^.u $US

Switch /Hub tu\y thuo^.c va\o network environment/configuration cu?a mo^~ i 
no+i . Vi' du.
ne^'u ta la^'y 1 tru+o+\ng ho.c vo+'i 4 PC nhu+ LAN-network thi\ ta ca^\n 1 
hub + 4PC+ NIC
Muo^'n ga('n qua ma.ng Internet thi\ pha?i ca^\n 1 modem dde^? connect to 
the IPS(Internet Provider Service) hay ta cu~ ng co' the^? interconnect 
vo+'i nhau tu+\  tru+o+\ng ho.c na\y sang tru+o+\ng kha'c ba(ng qua 
WAN-network va\ o+? dda^y thi\ ta pha?i du\ng route/swich etc...
Ta^'t ca? ~ components va\ su+. ke^'t ho+.p ga('n lie^\n vo+'i nhau dde^? 
ta.o ra 1 pha^\n cu?a ma.ng cu~ng nhu+ ta du\ng intranet dde^? la\m gi\ ?  ~ 
loa.i client/Server software gi\ se~ ddu+o+.c su+? du.ng,  hay chi? email 
.v.v  vi' du.  ta co' the^? du\ng 1 trong 4 PC dde^? la\m Server va\ 3 PC 
kha'c nhu+ "terminal" dde^? thi'ch ho+.p vo+'i  mo^i tru+o+\ng Local 
intranet ti\ ta cu~ng  co' the^? du\ng 2200$ cho Server va\ 1800$ cho 3*PC 
etc....

"ba?o tro*. mo^.t pha^`n thie^'t la^.p ma.ng Internet  cho tru*o*`ng ho.c "

Theo to^i thi\ ho+i kho' hie^?u ," mo^.t pha^\n" la \ bao nhie^u/lo+'n so 
vo+'i  cho ca'i gia' tha\nh tre^n ? vo+'i ca'i  kha? na(ng thu+.c te^' cu?a 
la\ng VNSA thi\ "mo^.t pha^\n" ddo'ng go'p cha('c cha('n cha(?ng a(n thua 
gi\, ho+n the^' nu+?a ba'c Ngo^ha. ho?i y' kie^'n VNSA ve^\ ca'i "strategy" 
ma\ ba'c a^'y du+. ddi.nh se~ la\m chu+' co' ho?i han gi\ ve^\ kinh te^' hay 
tham gia ba?o tro+. cho tru+o+\ng ho.c na\o dda^u ?

Ba'c U'txay dda~ cho y' kie^'n cu?a ba'c va\ ba'c DV muo^'n u?ng ho^. va\ 
ba'c DX muo^'n xu'c tie^'n co^ng  vie^.c .Theo to^i thi\ ta ne^n ba\n la.i 1 
ty' cho no' co' ve~ thu+.c tie^~ n ho+n

Vi' du. Dde^?  cho no' thu+.c tie^~n ho+n VNSA co' the^? thu he.p ddi.a ba\n 
hoa.t ddo^.ng cu?a mi\nh thay vi\ tru+o+\ng ho.c thi\ ta ne^n ta^.p trung 
va\ o ~ "tuye^?n cho.n" thu+ vie^.n ma\ o+? ddo' ta co' the^? ke^'t ho+.p 
vo+'i anh ngo^ha. dde^? ddi xa^u ho+n ve^\ WAN va\ internet/intranet.

Ca'c ba'c nghi~ sao ?


PVV



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