Đồ án xây dựng hệ thống hạ tầng mạng và triển khai dịch vụ cho doanh nghiệp

TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
LỜI CẢM ƠN
*+,-.*/0123+3345.31674849:1;9<
=>64?-@.1A1.1B17.+C"7."D4/23EFG<
#HI*023JKLM1167N49:13O#<1P"K1L3<
Q."DH43+E+*9R+4STU!48E+"04VID
#:64?167*+-.*/0123+3345.3
B.9RBI"J48J#H64?=EP+4C2W23
E+"04VID#:1+167*+,-.*/0123+33#
2X,D
@B17.+C"7Y+"E*V71Z2<1.1B17*+C45
1["#2X481+167\4]]-@.4^+31_45.3
`1=Z167481]V1,M4^+3Da[1P;D/23X#;1
1A"/WI7^*.IO\J]*["+49:1\4]
]-.1A-B17231.1E
C#B\167N1L31P"K161[1P"09Rb1IO233
4E
Đề Tài Tốt Nghiệp Trang 1
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
LỜI GIỚI THIỆU
Z2<,14C.*^23b=c*CIM1A"E#9<d*DE"7
/EB"E7"e4f9K11+23g*:9R=Z,4#3
1B1[J1+[1P1.1=+D*+9<11h99<1+37/D
,"E4.b1+1+9R=Z1]^*1#3"2D1i[1b4L[1bR
4^"3+1]V#:4^""31.1=+D4-L"912jPE+

"E#9<#3"2D1e4f*+=+D+=f1f*9R*C#<kM1
1Ml#3N9<.*^9K"E*+9K#"31.1=+D9<<
mV33167/"^1J2V1.1b=c231.1=f12c*^IEB
"E=+Dj4]49*1.1P.1c^1+j=+D*+2D1NL
=;EB"EG316748NL=;EB"E1+=+D2<P.
=;H23n31+=;*W17DU2##$U'2<+b1
opq+=Q#1*++1+#$oqQ'IJ:17D#*++1+#q#Tp1r
G*#*2p+*I$qTrG'
Đề Tài Tốt Nghiệp Trang 2
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
NHẬN XÉT CỦA DOANH NGHIỆP
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NHẬN XÉT CỦA GIẢNG VIÊN HƯỚNG DẪN
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Đề Tài Tốt Nghiệp Trang 3
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
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Đề Tài Tốt Nghiệp Trang 4
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 

# $%&%'()(%
MỤC LỤC HÌNH
Đề Tài Tốt Nghiệp Trang 5
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
MỤC LỤC BẢNG
Đề Tài Tốt Nghiệp Trang 6
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
THUẬT NGỮ VIẾT TẮT
Đề Tài Tốt Nghiệp Trang 7
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
Đề Tài Tốt Nghiệp Trang 8
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
QPr\2JM
Đề Tài Tốt Nghiệp Trang 9
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
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MỤC LỤC
Đề Tài Tốt Nghiệp Trang 10
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
ĐỒ ÁN TỐT NGHIỆP
W45.
XÂY DỰNG HỆ THỐNG HẠ TẦNG MẠNG VÀ TRIỂN
KHAI DỊCH VỤ CHO DOANH NGHIỆP
I. GIỚI THIỆU TỔNG QUAN VỀ ĐỀ TÀI
1. Yêu cầu và trọng tâm của đề tài
sL=;EB"E1+17+3qW"4P"P+n3=;H1+23
1LaP1+D,
tW1B*^I1+17+3qW"5"
 *ci14`ET3oH2<-"7uuL2W5"H
• HL;1]uL2W
• HIJ+.1]uL2W
• HI=+1])uL2W
• HIv1])uL2W
• HJf1](uL2W
 .4`EQ/w9K2<-"7uuL2W5"1]H
• HL;1])uL2W
• HIJ+.1])uL2W
• HI=+1]uL2W
• HIv1]uL2W
• HJf1])uL2W
m^4.b\1B1A17+3qW"1[/*^I"C,=f12c
• *^ID,4fJa+b1xd2)
• *^IGqU1H

• *^IoqQXn3231LaP1+EB"E
• *^ID,*"*w+"+*+##**W1.T3oH23U==+#
w+"+*+##**W1.Q/w9K
• *^I=f12c*2*wT*2*w*2*y*2*CC
• *^IdzTy*p##XP+"1+17
m^4.b\1BIJ,\)T3oH23Q/w9K*^I=f12c
qTrG
2. Mô hình tổng quát của doanh nghiệp
Đề Tài Tốt Nghiệp Trang 11
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
/r7/"E1.Q/w9K
Đề Tài Tốt Nghiệp Trang 12
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
/)r7/"E*ci1T3oH
Đề Tài Tốt Nghiệp Trang 13
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
/r7/IJ,)
II. GIỚI THIỆU CÁC GIAO THỨC ĐỊNH TUYẾN VÀ CÔNG NGHỆ CHUYỂN
MẠCH
1 Routing
{ Khái niệm

mfJ#3-.*/*+*|=c4^1^J1.11I4J"E41
x+*49*-J4f=;*W4f1_d411A1Im^1]^49*49:1
-J4f1N.1*+*P011.1#3"+4^44J1.1"EiNY
*+*|=c-.*/4fJ4C73l49:101j\*+*
I.1Y-.*/4fJ}49:1|=c3-P*f"El1[/
72V\"EiNa1+*+*
{ Static routing
r 3-P*f1[/1+49R}
r x+*l491+49R23+*+P4fJ
r +49R4fJ}l49:14923+|=c
r 6.
x+*$1+~'•*+€=+p+*I•
€"I•€N+==*‚++
*~1•ƒ="*2=1„
U="*2=1$Uw'#3"C"
,Z101_*4C11A"C1+
49R+49R1].*f13[/
1349:11o.*fUw"`14f
Đề Tài Tốt Nghiệp Trang 14
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
1AJ49R}#3
QP)r6.E+1*+
 Default route
r m9R"`14f#349R"3x+*l|=c*+*jK:*+*
I7/"[49R43+Z:*+P4fJ4^<411A
]=\#D
r 69R1[/49R"`14f1+49R* *1A

x+*2/x+*I71BP#974fJ<j"E*W
*
r 6. 
x+*$1+~'•*+uuuuuuuu
€N+==*‚++*~1•
w~#*+49:1|=c4^|1.1
1I4J1.1"E41"3I71]
*+P4fJ9R49:1|
=c*W1.1"Ei=Ep+*I
$"E1_1]"C1+49R4^4*W
+3'
x+*•+p*r1+~
x+*•+p*+
Y^"*1[/
QPrqDE+23I^"*=~#*+
{ Dynamic routing
x+*++1+##37\+J\1.1*+*C+b14f
J1+…1.1*+*1†72V1.1"Ex+*|=c1.17
34^NL=;23=*/P4fJ1A"/
 Các loại giao thức định tuyến:

Distance Vector:
xddox+E4C+WM3N]"}#3"g*+*l|
P*+r#1A1"/1+[1P1.1*+*49:1,*;1J2<"/
.1*+*4]+.2<P*+r#"3"/D1]23I^"*N"*+
1A"/23*+"<49:1*+3+,Kl49:11[.1*+r
=l49:1i+4fI‡$uL2<xd(uL4,2<xdr+2##uL
4,2<dox'w+4]I1];4e*+"E1.1*+*lJ49:1*E.
1A1.14+E"E
r Ưu điểm:

w1[/*+*I7PN|#@V
r Nhược điểm:
Đề Tài Tốt Nghiệp Trang 15
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
D,"*1-.4KPW1]^NP*2D11+49R,[
19P#3,[
w+P14fI‡1.1*+r#W"C#9:=p=
4.I^lf1J"
.1*+*Cc1"l=>4J2D1#D1*+P*+23#3"D
,"Ef#++

Link-state:
qII7i*+r="31_i/*E1A1.11.#I
*+#Ir=1A"/41+1.1*+*I.14^*5;"g*+*l1E
P+*~*;NL=;P*+r#1+"/T4]I
"E48Cc#Ir*++1+#lI7i=4fI‡9w1r21+*
"31_iI3+1]"C;4e[*+++#+"E
r Ưu điểm:
]^149:12<4,D,1+…9RJIJ1]^
JIJ"E#+EPb2</,NP*
w+I7i*2#r=W#IP+4P"49:1X71+
1.149R"E
r Khuyết điểm:
w+*+*PN|#@VW1J"VC<#>ˆ23#3"X4C
=#
qII.I]1[/4^1E,4HO9R#3"2D1P1]I
D"

Một số giao thức định tuyến:
• x+d~+*"+*++1+#
• !1=d*+*opx+*++1+#
• zT+*y*
 Routing Information Protocol :
 Một số tính chất:
r o+b14fJw1G1+*
r T|=c+r1+#3""*1N""+r1+#3
r U="*2=1#3)u
r +E4C+I^45
r oi=4fI‡uL7i4#3+3CP4f
J
r xd223xd2)
r xd2 1#~#I7|"I
r xd2) 1##g*:GqT1]IF"+"I1+
x+*$1+~'•*+** I1+E+b14fJxd*W*+*
Đề Tài Tốt Nghiệp Trang 16
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
x+*$1+~r*+*'•p+*Iƒp+*I
==*„
I.+1.1p+*I1B-P.1h9I1
+E1.1*~149:1…i23xd=
T+p*++1+#
I^"*+E4C
T+p*+
w*
-.2D1xd1a1.1|23

*W*+*
+=*
M1J4C=
=##
T+p*++1+# s"*+*++1+#"*
T+p*++1+#
s"1.1*++1+#3+49:11[/*W1.1
*~1
QP&rqDE+23I^"*xd
 Interior Gateway Routing Protocol :
 Một số tính chất:
r o+b14fJw1G1+*
r T|=cIJ:\X7234C*#3""*1
r U="*2=1#3uu
r +E4C+I^45
r oi=4fI‡uL7i4#3+3CP4f
J
r #~#I7|"I
r q3+b1*W1A1+
x+*$1+~'•*+**ƒUT„
Y1+E+b14fJxd*W
*+*
x+*$1+~r*+*'•p+*Iƒp+*I
==*„
Y.+1.1p+*I1B-P.1h9
I1+E1.1*~149:1…i23
Đề Tài Tốt Nghiệp Trang 17
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 

# $%&%'()(%
dox=
T+p*++1+#
Y^"*+E4C
T+p*+
w*2
s"1.111Adox49:1|23
*W*+*
+=*2
M1J4C=
=##
T+p*++1+# s"*+*++1+#"*
T+p*++1+#
s"1.1*++1+#3+49:11[/*W1.1
*~1
w**1+
s"1.1;dox249:1N|#@*W
*+*
QPrqDE+23I^"*dox
U++"+T" #3"C"E49:1-P*f12<1.11.14f
J1o+b1dox|=cUT4^E+1.1]"*+*1Z1†7
/"49R2<
 Enhanced Interior Gateway Routing Protocol :
 Một số tính chất:
r o+b14C1-V1A1+
r o+b14fJ1##
Đề Tài Tốt Nghiệp Trang 18
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 

# $%&%'()(%
r o+b1=1r21+*
r _i=I1];4e*W"E
r g*:1.1+b1dds23U##I
r g*:GqT‰dwx
r +…;1D-.*/""*Š+EW"E
r q;1049R4,[7-PwˆUq
r sL=;23=*/1.1P+*#++#+#23*+
#
r *149:1=;*W1.1J, =p==##+=*##
r +…1LaP*W1.11+49R1].3I7a

r o.*fUwau
r YM1c149:12[4V=1++p+*I`P4,2<1.1+
b1xd223dox
r [/
x+*$1+~'•*+**ƒUT"*
Y1+E+b14fJ
!dox
x+*$1+~r*+*'•p+*Iƒp+*I"*„
Y1+E1.1*~1li23
=1h9I.+
1.1p+*I1B-P.
x+*$1+~r*+*'•++r""*
M1b1X+r""*E
W"E
+p*+
Y^"*P+E4C
+p*+*
+p*+*

QP(rqDE+23I^"!ox
 Open Shortest Path First :
 Một số tính chất:
r ‹"i
r o+b1#Ir
r _g*:+b1d
r o+"]"1.1p+*I23*+*23+*+j*q75E*
u$1I+*'[1P1.1*I.1$J1]'4VP,23+*
u
r T|=cPwŒI*4^NL=;1L49R4M[4J1.1
41
r +…1LaP*W1.11+49Ra1].3a
r g*:GqT‰dwx
Đề Tài Tốt Nghiệp Trang 19
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
r _i=I1];4e*W"E
r YM1c12[4V#W-4J=1++p+*I
r sL=;23=*/1.1+*=++#+=
r o.*fUwau
r [/
x+*$1+~'•*+*+~ƒ*+1dw„ Y1+E+b14fJzTy
x+*$1+~r*+*'•p+*Iƒp+*I
"*„ƒp#=1*="I„*ƒ*dw„
[/zTy*
x+*•+p*+
Y^"*+E4C
x+*•+p+~

x+*•+p+~=
x+*•+p+~*~1
x+*•+p+~+*
QPrqDE+23I^"*zTy
2 Virtual Local Area Network
{ Khái niệm
GqU#3"EqUP+GqU#3"C"V-P.49:1E+iTp1I7
cC123+2f*2#@94e1[/1AGqU4V49:1;1D*W
B"VI71B4e1.231.1Jf2#@
GqU49:1]"+"C]"#+12V1b1X23]=\#D1_49:1
1^"E1*+1Z"CGqU4P"P++3P+"23=-P#@K
Đề Tài Tốt Nghiệp Trang 20
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
/&rGqU
{ Nguyên tắc hoạt động
g1e*Wp11]^.1+"CGqUI.1.11ea"*+
1Z"CGqUl1†]-P.2<.11eI7a"*+1Z
GqUlI71†]-P.2<R4]"EqU+E4CD-P
K
32W1AGqU49:1N.14f+1e1Ap1"`14f[1P1.1
1e*Wp14VC1GqU"`14fGqU
s.14f32WGqU+1eb1#31e4849:1.23+GqU3+/
JfIJ,23+1e4]C1GqU4]I7c1C123+JfIJ,#3
Jf/4f1_+WG<1.11GqU+1e92[1P1.19R
=ZIJ,23+1Z"C1ela"*+1Z"CGqU.11GqU3
62D1-P#@4KPK2/I71B/"*+1Ki=\#Db1E4^N.1
4f32W*+"gGqU

]^1GqU+4f1_U#+1+`1+#+E+b1Y71B
-P#@Vi1.1A,=L\2/JfIJ,23+"EC1GqU3+#3Z
+4f1_1AJf4]49:1.23+GqU4]]IPX7.+1+-P*f
Đề Tài Tốt Nghiệp Trang 21
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
"EI1]"C9R=Z4B1,#EI71]*+1Ki=\#DIJ,23+
"E
{ Ưu điểm của VLAN
+…9R-P*f"Ee1b1"E+#+11bI7+2#@
\R4]172D1-P#@*23=^=3K
]#4C1+=^=31+2D14e1.1Jf*+qU
Y^"+.+7"E==3
oXP+"1.1GqUI.1I7*149:123+
JID"X71A"EGqU1]^1OqU31.14+EY
"C]-P.]l49:1*V41_*+"CGqU=[I7I7
*V4i1.1GqUI.1WP"#9#9:-P.JID"X749R
*V
{ Các loại VLAN
VLAN dựa trên cổng- port based VLAN  "g  1e  *  +`1  ~
*49:1M2<"CGqUN.14fw+4]"g".Jf+IJ,
"C1e1Ap14VcC123+GqU4]mL#31.11[/GqU4KP
23eJ[
VLAN theo địa chỉ MAC- MAC address based VLAN "g4f1_U49:1
.<"CGqU[4f.11[/3*[b1E23I]IX*+2D1
-P#@
VLAN theo giao thức- protocol based VLAN 9K;2<GqU=;*W
4f1_U9|=c4f1_d1+4f1_U.11[/3I7

7=c
Tp1$1+~'•GqUƒ"*GqU„
"ƒGqU"„
qD3=Z4^E+"CGqU
Tp1$1+~'•+GqUƒ"*GqU„ s]GqU48E+
QP%rE+23N]GqU
 Private VLAN:
r *2GqU1+…"Cp1.1D1.1+9^1.1+3*W1.1
GqUI.1*+I2>=Z=["Cd
r C*2GqU+5"#+EGqU1 *"*GqU23"C+`1V
1+=*GqU
r .1+**+*"*GqU49:10#3*+"1++*
r T1+=*GqU1]^+5"+#=+`11+""GqU
r .1+C1+#=GqU1_*V749:12<+4C1*"*
GqU
Đề Tài Tốt Nghiệp Trang 22
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
r .1+C11+""GqU1_*V749:12<1.1+a"*+
1Z1+""GqU231.1+i*"*GqU
r *2GqU1_*^I49:1*W1.1p1(u+`1*i#W1bI7*^
I49:1*Wp1)(u
Tp$1+~'•2** Tp1i"+=G**
Tp$1+~'•GqUuu E+GqUuu
Tp$1+~rGqU'•*2rGqU+#= mf}GqUuu#3+#=GqU
Tp$1+~'•GqUu E+GqUu
Tp$1+~rGqU'•*2rGqU*"* mf}GqUu#3*"*GqU
Tp$1+~rGqU'•*2rGqU+1+==

uu
qWIJ*"*GqU2<+#GqU
Tp$1+~'•*~1y!*u‰ *123+1e~u‰
Tp$1+~r~'•p1"+=*2GqU+ 01e~u‰#3++*
Tp$1+~r~'•p1+**2rGqU+r
+1+uuu
oM++*23++#=GqUuu
1]GqUu#3*"*GqU
Tp•+p*~1~*u‰p1+*
m^I^"*7++*2j
E+
QPrqD1[/23I^"**2GqU
 VLAN Access-list:
r GqUU11rq#3"C*+\9K.L1+P+"*+
"E+…I^"+.#9#9:1E*WTp1Y1[/GqUU11r
#9R=Z1]^L#+E#9#9: dk‡23+1.1
1A3-P*f"E1]^#01O+`11+1.1#+E74]#97*+
"EGqUU11r#1]^.=c*+E"2GqU+`1\1.1GqU
GqUU11r#1]1.14`19x+*U11r#1]^#+EO1+-
.4f9<1.1]
r Y.D"U11r#I71H]•*+@}=Z4^1`*~~1
1`1.1dU11r#49:1=Z4^#01L#+E*~~14f1_d4]4,
2<j#+E*~~1d48L#+E9R=Z1]^1]1.14,N|
I.1
r G  =c  I7  1+  …  *  d  )(%  r  )(%uu  #  4J
)(%)&
Tp1$1+~'•d11r#N==#+1I# Y<E+Uq
Tp1$1+~rNrUq'•*")(%uuuuu
+)(%)&


-#
C=1AUq
Đề Tài Tốt Nghiệp Trang 23
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
Tp1$1+~'•GqU11r"#+1I) YiE+GqU11"
Tp1$1+~r11r"'•"1d==*#+1I#
1Uq23+GqU11
"
Tp1$1+~r11r"'•1+=*+ 34C#31["
QPurE+GqUU11r#
 Voice VLAN:
r G+1GqU#3GqU31+#9#9:+E
r G+1GqU1+…1.1+**Wp11]IPX*V#9#9:G+1dj
"Cd+
Tp1$1+~'•*~1~*#+‰+*r
"*
0*~1#3"2+1GqU
Tp1$1+~r~'•p1+*2+1GqU
2+1ŽGqUŽ=
U==*~123+2+1GqU
QPr[/2+1GqU
3 VLAN Trunking Protocol
a. Khái niệm
G#3+b1+E4Ciq*)*+"7/zTdG61+2D11[
/GqU#745[IW"N]|72VGqU*+D,"E
b. Hoạt động của VTP
Đề Tài Tốt Nghiệp Trang 24

/r+E4C1AG
TRƯỜNG CAO ĐẲNG NGHỀ CNTT iSPACE

 www.ispace.edu.vn!"# 
# $%&%'()(%
G~#++=74D-P.r=2*"-G=+"6"C#B
+`1I1];4eNP**+1[/GqU
CG=2*"+5"1]2+r"*WGqU,DGqU23
72V1.1p11]+*M2<"gqU
Qa  ;  1[  /G  *2*23  2D1  *V  .  7    7  -  1.1
2*"[1P1.1p14VJ2VWGqU23,DGqU1A[1P1.1
GqU
C  *+  \  3  B  -  *0  1A  G  =2*"  #3  "
,*2+r"*
g#BG*2*4V1_7GqU]X*2+r"*#W
*54]G*2*"<|G=2*"4
Y"Cp1"CG=2*"2<2+r"*#<K]l
11[/GqU
G+E4Ci1J4C *2*1#**
Tp1i1J4CG*2*1]^E+1_|23N]GqUG*2*#9
1[/GqU*+GxU1A]GT*2*|74D*[1P1.1+**I
1A]
Tp1i1J4CG1#I7E+|23N]7GqUG#1]
1b1X4.b+"0;4e1AGqUj*2*23|74D*[
1P1.1+**I1A]G#I7#91[/*+GxU"31_4`*W
xU2/]1]^011[/GqUj*2*w+4]1J4C1#*[\=cI
p1I71]4AC<4^#9"C#9:#<7GqU
Tp1i1J4C**l231^J1.1G==+1.1
p1I.1|4J"3I7-L"4JC=1A1.174D3
J**p149:171G]1hI7123+

1Ki=\#D1A]45RJ1[/GqU1A]1]/4e]1h
I7|711+1.1p1I.1*W**p11_1]"C
2D1=[#31^J74DGTp1+E4Ci**r"+=1_
1]^E+*1.1GqU1c1C.1GqU3lI749:1-P.4J1.1p1
I.1
c. VTP Prunning
B"4fp1l|*+=11.1]"3I71]7*+3
"E4V3#3"X#9#9:I71BJ
G*l#3"XD-P|=cX7a2D1#3"."1.1
#9#9:I71BJ9 *+=1"#11I+p~#++==
B"4fG*f=#
Đề Tài Tốt Nghiệp Trang 25