160 cu hi trc nghim mn k thut mng my tnh km p nTop of Form1 -
Thit b no hot ng tng Vt l (Physical)?[a]--Switch [b]--Card mng
[c]--Hub v repeater [d]--Router 2 - Mi trng truyn tin thng thung
trong mng my tnh l?[a]--Cc loi cp nh: UTP, STP, cp in thoi, cp
quang,... [b]--Sng hng ngoi [c]--Tt c mi trngng nu trn [d]--Khng ci
g ng 3 - Cc thnh phn to nn mng l?[a]--My tnh, hub, switch
[b]--Network adapter, cable [c]--Protocol [d]--Tt c u ng 4 - Tng no
trong m hnh OSI lm vic vi cc tn hiu in?[a]--Data Link [b]--Network
[c]--Physical [d]--Transport 5 - Protocol l?[a]--Cc qui tc cho php
cc my tnh c th giao tip c vi nhau [b]--Mt trong nhng thnh phn khng
th thiu trong h thng mng [c]--A v B sai [d]--A v B ng 6 - Thit b no
sau y c s dng ti trung tm ca mng hnh sao?[a]--Switch, Brigde
[b]--Netcard [c]--Port [d]--Repeater 7 - Kin trc mt mng LAN c th
l?[a]--RING [b]--BUS [c]--STAR [d]--C th phi hp c A, B v C 8 - Gi
tr ca 11101101 (gi tr cc bit nh phn) trong c s 16 l?[a]--CB [b]--ED
[c]--CF [d]--EC 9 - M t no sau y dnh cho mng hnh sao
(star)?[a]--Truyn d liu qua cp ng trc [b]--Mi nt mng u kt ni trc
tip vi tt c cc nt khc [c]--C mt nt trung tm v cc nt mng khc kt ni n
[d]--Cc nt mng s dng chung mt ng cp 10 - Loi cp no c s dng ph bin
nht hin nay?[a]--Cp ng trc [b]--Cp STP [c]--Cp UTP (CAT 5) [d]--Cp
quang
Bottom of Form
Solutions! -------- p n cu 1 cp n cu 2 ap n cu 3 dp n cu 4 cp n
cu 5 dp n cu 6 ap n cu 7 dp n cu 8 bp n cu 9 cp n cu 10
c------2-------Top of Form
1 - Nhc im ca mng dng hnh sao (Star) l?[a]--Kh ci t v bo tr
[b]--Kh khc phc khi li cp xy ra, v nh hng ti cc nt mng khc [c]--Cn
qu nhiu cp kt ni ti nt mng trung tm [d]--Khng c kh nng thay i khi
lp t 2 - c im ca mng dng Bus?[a]--Tt c cc nt mng kt ni vo nt mng
trung tm (V d nh Hub) [b]--Tt c cc nt kt ni trn cng mt ng truyn vt
l [c]--Tt c cc nt mng u kt ni trc tip vi nhau [d]--Mi nt mng kt ni
vi 2 nt mng cn li 3 - Trnh t ng gi d liu khi truyn t my ny n my
khc?[a]--Data, frame, packet, segment, bit [b]--Data, segment,
frame, packet, bit [c]--Data, packet, segment, frame, bit
[d]--Data, segment, packet, frame, bit 4 - Khi s dng mng my tnh ta
s thu c cc li ch?[a]--Chia s ti nguyn ( cng, c s d liu, my in, cc
phn mm tin ch...) [b]--Qun l tp trung [c]--Tn dng nng lc x l ca cc
my tnh ri kt hp li thc hin cc cng vic ln [d]--Tt c u ng 5 - Th t cc
tng (layer) ca m hnh OSI theo th t t trn xung l?[a]--Application,
Presentation, Session, Transport, Data Link, Network, Physical
[b]--Application, Presentation, Session, Network, Transport, Data
Link, Physical [c]--Application, Presentation, Session, Transport,
Network, Data Link, Physical [d]--Application, Presentation,
Transport, Session, Data Link, Network, Physical 6 - kt ni hai my
tnh vi nhau ta c th s dng?[a]--Hub [b]--Switch [c]--Ni cp trc tip
[d]--Tt c u ng 7 - Chn chc nng ca tng Presentation?[a]--M ho d liu
v nn d liu [b]--Cung cp cc dch v mng ngi dng [c]--nh a ch [d]--Tt c
u sai 8 - Biu din s 125 t c s decimal sang c s binary?[a]--01111101
[b]--01101111 [c]--01011111 [d]--01111110 9 - Lp no (Layer) trong m
hnh OSI chu trch nhim m ho (encryption) d liu?[a]--Application
[b]--Presentation [c]--Session [d]--Transport 10 - S nh phn no di y
c gi tr l 164?[a]--10100100 [b]--10010010 [c]--11000100
[d]--10101010
Bottom of Form
Solutions! -------- p n cu 1 cp n cu 2 bp n cu 3 dp n cu 4 dp n
cu 5 cp n cu 6 dp n cu 7 ap n cu 8 ap n cu 9 bp n cu 10 a
------3--------------------Top of Form
1 - Trong m hnh Internet, chun UNICODE (cho vic m ho cc k t) s
nm tng?[a]--ng dng [b]--Giao vn [c]--Mng [d]--Lin kt d liu 2 - Khi
kt ni my tnh t nh vo ISP thng qua ng dy in thoi, tn hiu trn ng in
thoi s thuc v tng?[a]--Giao vn [b]--Mng [c]--Lin kt d liu [d]--Vt l
3 - Theo m hnh OSI, nh dng nh JPG nm tng?[a]--ng dng [b]--Phin
[c]--Trnh din [d]--Mng 4 - Qu trnh d liu di chuyn t h thng my tnh
ny sang h thng my tnh khc phi tri qua giai on no?[a]--Phn tch d liu
[b]--Lc d liu [c]--Nn d liu v ng gi [d]--Kim th d liu 5 - n v d liu
tng presentation l?[a]--Byte [b]--Data [c]--Frame [d]--Packet 6 -
Khi ni mng gia 2 my tnh, chng ta s dng loi cp no ni trc tip gia
chng?[a]--Cp quang [b]--Cp UTP thng [c]--Cp STP [d]--Cp UTP cho
(crossover) 7 - Si cp xon ni gia card mng vi hub th?[a]--Bm th t 2
u cp ging nhau [b]--i v tr cc si 1, 2 vi si 3, 6 [c]--Mt u bm theo
chun TIA/EIA T-568A, u kia theo chun TIA/EIA T568-B [d]--Tt c u sai
8 - Cc quy tc iu qun vic truyn thng my tnh c gi l?[a]--Cc giao thc
[b]--Cc dch v [c]--Cc h iu hnh mng [d]--Cc thit b mang ti 9 - Hai
kiu my tnh khc nhau c th truyn thng nu?[a]--Chng ci t cng h iu hnh
mng [b]--Chng tun th theo m hnh OSI [c]--Chng cng dng giao thc
TCP/IP [d]--Chng c phn cng ging nhau 10 - M hnh OSI t chc cc giao
thc truyn thng thnh bao nhiu tng?[a]--3 [b]--5 [c]--7 [d]--9
Bottom of Form
Solutions! -------- p n cu 1 ap n cu 2 dp n cu 3 cp n cu 4 cp n
cu 5 bp n cu 6 dp n cu 7 ap n cu 8 ap n cu 9 bp n cu 10
c----------4---------------------------1 - Trong cc c ch sau y, c
ch no c s dng ci t Web cache?[a]--Kim chng v M kim chng 401
Authorization require [b]--Trng tiu "Last-Modified" v
"If-Modified-Since" [c]--Phng thc yu cu POST [d]--A v B 2 - Pht biu
no sau y ng v giao thc HTTP?[a]--Phin bn giao thc lun c t trong tt
c thng ip [b]--Tt c cc tiu u di dng text [c]--Tt c d liu u truyn di
dng vn bn (text) [d]--A v B 3 - Trong nhng thng ip HTTP tr li di y,
thng ip no ng?[a]--200 "OK" [b]--201 "Moved Permanently" [c]--404
"Not Modified" [d]--20 "Not Implemented" 4 - Nhng thng ip no di y c
giao thc POP3 h tr?[a]--Kim chng (Authorization) [b]--c mt th
(Retrieving a message) [c]--Xo mt th [d]--Tt c u ng 5 - Giao thc no
thuc tng Application?[a]--IP [b]--HTTP [c]--NFS [d]--TCP 6 - Pht
biu no sau y m t ng nht cho tng Application trong m hnh
OSI?[a]--Dch v in mng [b]--ng b d liu [c]--H khch truy cp cc dch v
mng [d]--M ha d liu 7 - Cho bit chc nng ca Proxy?[a]--L my i din
cho mt nhm my i thc hin mt dch v my khch (Client service) no [b]--L
mt thit b thng k lu lng mng [c]--Tt c u ng [d]--Tt c u sai 8 - Cho
bit ng dng no thuc loi Client/Server?[a]--WWW (World Wide Web)
[b]--WinWord [c]--Excel [d]--Photoshop 9 - M 404 trong thng ip tr
li t Web server cho Web cllient c ngha?[a]--i tng client yu cu khng
c [b]--Server khng hiu yu cu ca client [c]--Khng c cu tr li no ng
[d]--Yu cu ca Client khng hp l 10 - Giao thc c s dng truyn th gia
cc my ch phc v th (Mail server) l?[a]--HTTP [b]--FTP [c]--SMTP
[d]--POP p n cu 1 dp n cu 2 dp n cu 3 ap n cu 4 dp n cu 5 bp n cu 6
ap n cu 7 ap n cu 8 ap n cu 9 ap n cu 10
c-----------------------------------5-----------1 - Nhc im nu xy
dng h thng dch v tn min (DNS) theo m hnh tp trung l?[a]--Nu im tp
trung b hng, ton b h thng s b t lit [b]--S lng yu cu phc v ti im tp
trung duy nht s rt ln [c]--Chi ph bo tr h thng rt ln [d]--Tt c cu
tr li trn 2 - Gi s c mt bn ghi ca dch v DNS l (cnn.com,
r1.infor.cnn.com, CNAME)[a]--cnn.com l tn vit tt (rt gn) ca
r1.infor.cnn.com [b]--r1.infor.cnn.com l tn vit tt (rt gn) ca
cnn.com [c]--C A v B u ng [d]--C A v B u sai 3 - Giao thc c s dng 2
bn truyn file l?[a]--HTTP [b]--FTP [c]--SMTP [d]--SNMP 4 - Gi s c
mt bn ghi ca dch v DNS l (alpha.com, 123.4.5.7, NS). Chn cu tr li
ng?[a]--123.4.5.7 l a ch IP ca my alpha.com [b]--alpha.com l mt
min, khng phi l mt my [c]--123.4.5.7 l a ch IP ca my phc v th (mail
server) c tn min l google.com [d]--Tt c u sai 5 - Gi s tt c cc my
tnh thu bao Internet ca FPT khi truy cp vo website google.com u b
chuyn hng sang mt trang web khc. Cc my tnh thu bao cc ISP khc khng
gp tnh hung ny. Nguyn nhn gy ra li ln nht s l?[a]--Cc my tnh b nhim
virus [b]--Website google b li [c]--DNS server ca FPT b li
[d]--Router ra ngoi ca ISP FPT b li 6 - Quan st mt ngi ang truy cp
mt trang web bn thy anh ta g ng dn nh sau:
http://www.tomang.net:3000. Hy cho bit Server web m trang web bn
trn c t chc trong s dng TCP port nh th no?[a]--S dng port mc nh
[b]--Khng s dng port mc nh [c]--S dng port chun [d]--S dng port dnh
ring cho Web server 7 - Bn ang s dng FTP trong Command Promt, bn
mun to mt th mc mang tn "Test" trn my cc b ca bn (bn vn khng thot
khi FTP). Bn s s dng lnh g?[a]--#md test [b]--!md test [c]--Md Test
[d]--Mkdir test 8 - Cc Web client thng c gi l g?[a]--Netscape
Navigator [b]--Browers [c]--Mosaic [d]--HTML interpreter (trnh thng
dch HTML) 9 - Web server thng s dng phn mm chy trn?[a]--Cng 25
[b]--Cng 404 [c]--Cng 125 [d]--Cng 80 10 - thit k mt trang Web nh
chng ta vn thy trn mn hnh (cc nh dng font ch, mu sc, cc hiu ng ha,
cc ng lin kt), ngi ta pht trin mt kiu nh dng c bit. nh dng trang
chun c dng trong Web l?[a]--HTTP [b]--Mosaic [c]--HTML
[d]--Netscape p n cu 1 dp n cu 2 ap n cu 3 bp n cu 4 bp n cu 5 cp n
cu 6 dp n cu 7 bp n cu 8 bp n cu 9 dp n cu 10
c---------------6-------------------Top of Form
1 - HTTP lm nhim v g?[a]--Cung cp mt c ch ly d liu t server
chuyn n client [b]--Hin th cc trang Web t xa trn mn hnh v gip ngi
dng tng tc vi chng [c]--Cung cp giao din ngi dng nh cc nt bm, thanh
trt, v.v [d]--Cung cp d liu t server s dng giao thc chuyn file
(File Transport Protocol) 2 - Trn Internet, email c gi t my ngun
bng cch thit lp mt kt ni TCP n mt cng c th trn my ch. Cng l?[a]--80
[b]--110 [c]--25 [d]--404 3 - Trong gi d liu UDP (UDP segment), a
ch dng xc nh tin trnh nhn nm ?[a]--Byte 1 v 2 [b]--Byte 3 v 4
[c]--Byte 5 v 6 [d]--Khng xc nh 4 - pht hin li trong gi tin, ngi ta
s dng k thut?[a]--S th t (sequence number) [b]--S th t ghi nhn
(acknowledgement number) [c]--B nh thi (timer) [d]--Checksum 5 -
Protocol no c s dng cho mng Internet?[a]--TCP/IP [b]--NetBEUI
[c]--IPX/SPX [d]--Tt c 6 - Cc protocol TCP v UDP hot ng tng no
trong cc tng sau y?[a]--Transport [b]--Network [c]--Application
[d]--Presentation 7 - Giao thc TCP lm vic tng no ca m hnh
OSI?[a]--Application [b]--Transport [c]--Network [d]--DataLink 8 -
Giao thc no di y khng m bo d liu gi i c ti my nhn hon chnh hay
khng?[a]--TCP [b]--ASP [c]--UDP [d]--ARP 9 - Cc giao thc ca tng
giao vn (Transport)?[a]--Kim sot vic truyn tin gia hai tin trnh trn
mng my tnh [b]--Kim sot ni dung thng ip trao i gia hai tin trnh v
hnh vi ca mi bn khi nhn c thng ip [c]--Kim sot vic truyn tin gia
hai my tnh trn mng my tnh [d]--Kim sot vic truyn d liu gia hai my
tnh trn cng mt mi trng truyn 10 - Gi s trng Length ca mt gi d liu
UDP c gi tr 150. D liu thc s s c?[a]--67 byte [b]--142 byte
[c]--150 byte [d]--158 byte
Bottom of Form
Solutions! -------- p n cu 1 ap n cu 2 cp n cu 3 ap n cu 4 dp n
cu 5 dp n cu 6 ap n cu 7 bp n cu 8 cp n cu 9 ap n cu 10
b---------------7---------------1 - Trong gi d liu UDP (UDP
segment), vng d liu thc s bt u t byte th?[a]--9 [b]--8 [c]--5
[d]--4 2 - Checksum trong gi d liu UDP c di?[a]--4 bt [b]--8 bt
[c]--16 bt [d]--32 bt 3 - V tr d liu thc s trong gi d liu TCP bt u
t byte?[a]--40 [b]--32 [c]--5 [d]--Khng xc nh 4 - Gi s thc th TCP A
cn gi 1500 byte cho thc th giao vn B. Gi th nht cha 1000 byte d
liu, trng Sequence Number ca gi ny l 100. Trng Sequence Number ca
gi th hai s l?[a]--1101 [b]--1100 [c]--500 [d]--501 5 - Vi giao thc
TCP, bn nhn s thng bo li cho bn gi v s lng ti a d liu m n c th nhn
c. Gi tr ny c xc nh ti trng?[a]--Sequence Number
[b]--Acknowledgement Number [c]--Rcvr Number [d]--Header length 6 -
Sau khi thc th TCP gi i gi SYN segment vi trng Sequence Number =
100, n nhn c gi ACKSYN vi trung Sequence Number = 200. Trng
Acknowledgment Number ca gi ACKSYN ny s l?[a]--100 [b]--101
[c]--200 [d]--201 7 - Gi s ng dng to ra mt thng ip 60 byte. Thng ip
ny c t trong TCP segment ri sau l IP datagram. Gi s c gi TCP ln gi
IP khng c trng d liu c bit (Optional = 0). Trong mi IP datagram s
cha bao nhiu phn trm d liu tht s?[a]--20% [b]--40% [c]--60%
[d]--80% 8 - Thng ip ICMP c t trong gi d liu?[a]--UDP [b]--TCP
[c]--IP [d]--Khng xc nh 9 - Khi thc th TCP gi mt gi SYNACK segment
vi trng Acknowledgement Number = 100, iu ny c ngha l?[a]--Gi d liu
n gi i bt u bng byte th 100 trong dng d liu [b]--Byte d liu u tin
trong dng d liu s gi i c s th t l 100 [c]--N s gi t byte th 100
[d]--N hy vng nhn c d liu bt u bng byte c s th t 100 10 - TCP port
mc nh c s dng cho FTP server c gi tr l bao nhiu?[a]--20 v 21
[b]--80 v 8080 [c]--110 v 80 [d]--8080 v 1080 p n cu 1 ap n cu 2 cp
n cu 3 dp n cu 4 bp n cu 5 cp n cu 6 bp n cu 7 cp n cu 8 cp n cu 9
dp n cu 10 a------------------------------------8---------------1 -
a ch no sau y thuc lp A?[a]--172.29.14.10 [b]--10.1.1.1
[c]--140.8.8.8 [d]--203.5.6.7 2 - Gi s c mt H thng 2 LAN segment c
ni vi nhau qua mt router l my tnh. My tnh ng vai tr Router c bao
nhiu card mng?[a]--1 [b]--2 [c]--3 [d]--4 3 - My tnh ng vai tr
Router c bao nhiu a ch IP?[a]--1 [b]--2 [c]--3 [d]--4 4 - Chc nng
chnh ca router l?[a]--Kt ni network vi network [b]--Chia nh
broadcast domain [c]--A v B u ng [d]--A v B u sai 5 - Trong cc a ch
sau, chn a ch khng nm cng mng vi cc a ch cn
li?[a]--203.29.100.100/255.255.255.240
[b]--203.29.100.110/255.255.255.240
[c]--203.29.103.113/255.255.255.240
[d]--203.29.100.98/255.255.255.240 6 - a ch no sau y l a ch
broadcast ca mng lp B?[a]--149.255.255.255 [b]--149.6.255.255
[c]--149.6.7.255 [d]--Tt c u sai 7 - Chn nh ngha ng v a ch
MAC?[a]--c ghi sn trn card mng (NIC) [b]--Do ngi qun tr mng khai bo
[c]--Cu A v B ng [d]--Tt c u ng 8 - iu g xy ra khi my tnh A gi
broadcasts (ARP request) i tm a ch MAC ca my tnh B trn cng mt
mng?[a]--My ch DNS s tr li A vi a ch MAC ca B [b]--Tt c cc my tnh
trong mng u nhn c yu cu (ARP request) v tt c s tr li A vi a ch MAC
ca B [c]--Tt c cc my tnh trong mng u nhn c yu cu (ARP request) nhng
ch c B mi tr li A vi a ch MAC ca mnh [d]--Cc Router gn nht nhn c yu
cu (ARP request) s tr li A vi a ch MAC ca B hoc s gi tip yu cu ny
ti cc router khc (forwards the request to another router) 9 - a ch
IP 172.200.25.55/255.255.0.0[a]--Thuc lp A [b]--Thuc lp C [c]--L a
ch ring [d]--L a ch broadcast 10 - Thut ton chy trn gateway router
l?[a]--Inter-routing [b]--Intra-routing [c]--C hai u ng [d]--C hai
u sai p n cu 1 bp n cu 2 bp n cu 3 bp n cu 4 ap n cu 5 cp n cu 6 dp
n cu 7 ap n cu 8 cp n cu 9 cp n cu 10 c
-----------------9-------------------1 - Chui s
"00-08-ac-41-5d-9f" c th l?[a]--a ch IP [b]--a ch port [c]--a ch
MAC [d]--Tt c u sai 2 - Router l 1 thit b dng ?[a]--nh tuyn gia cc
mng [b]--Lc cc gi tin d tha [c]--M rng mt h thng mng [d]--C 3 u ng
3 - Thit b Router cho php?[a]--Ko di 1 nhnh LAN thng qua vic khuych
i tn hiu truyn n n [b]--Kt ni nhiu my tnh li vi nhau [c]--Lin kt
nhiu mng LAN li vi nhau, ng thi ngn khng cho cc packet thuc loi
Broadcast i qua n v gip vic nh tuyn cho cc packet [d]--nh tuyn cho
cc packet, chia nh cc Collision Domain nhng khng chia nh cc
Broadcast Domain 4 - Tng Network (c th trong tng IP) chu trch
nhim?[a]--Da trn a ch IP ch c trong packet m quyt nh chn ng thch hp
cho packet [b]--Quyt nh ch n ca packet [c]--Pht hin packet b mt v
cho gi li packet mt [d]--Chia nh packet thnh cc frame 5 - Cc thit b
mng no sau y c kh nng nh tuyn cho 1 gi tin (chuyn gi tin sang mt
mng k khc nm trn ng n mng ch) bng cch da vo a ch IP ca my ch c
trong gi tin v thng tin hin thi v tnh trng mng c th hin trong bng
nh tuyn c trong thit b?[a]--Bridge [b]--Router [c]--Switch [d]--C
A, B v C 6 - Nhng a ch no thuc v lp A?[a]--10001100 11001100
11111111 01011010 [b]--11001111 11110000 10101010 01010101
[c]--01111010 10100101 11000011 11100011 [d]--11011010 10101010
01010101 11110011 7 - Nu ly 1 a ch lp B chia subnet vi netmask l
255.255.240.0 th c bao nhiu subnets c th s dng c (useable
subnets)?[a]--2 [b]--6 [c]--30 [d]--16 8 - Trang thit b mng no dng
ni cc mng v kim sot c broadcast?[a]--Hub [b]--Bridge [c]--Ethernet
switch [d]--Router 9 - a ch no c Switch s dng khi quyt nh gi data
sang cng (port) no?[a]--Source MAC address [b]--Destination MAC
address [c]--Network address [d]--Subnetwork address 10 - Dch v no
sau y m tng lin kt d liu no cng phi cung cp?[a]--t gi tin tng mng
vo cc Frame [b]--nh tuyn [c]--M ho cc bit thnh cc tn hiu vt l
[d]--To ng truyn tin cy p n cu 1 cp n cu 2 ap n cu 3 cp n cu 4 ap n
cu 5 bp n cu 6 cp n cu 7 dp n cu 8 dp n cu 9 bp n cu 10
a--------------------10--------------1 - Giao thc MAC lin quan n
tnh hung khi...?[a]--Nhiu thit b kt ni vo knh qung b dng chung
[b]--Nhiu nt cng mun truyn d liu ti cng thi im [c]--Cn c ch xc nh
nt no c quyn truyn [d]--Tt c A, B, C u ng 2 - C bao nhiu vng ng
(Collision Domain) trong mt mng dng 1 Repeater v 1 Hub?[a]--1
[b]--2 [c]--3 [d]--4 3 - hn ch s ng ca cc gi tin trn mng ngi ta
chia mng thnh cc mng nh hn v ni kt chng li bng cc thit
b?[a]--Repeater [b]--Hub [c]--Switch [d]--Card mng (NIC) 4 - Cc
thit b mng no sau y c kh nng duy tr thng tin v hin trng kt ni ca
ton b mt mng x nghip hoc khun vin bng cch trao i thng tin ni trn
gia chng vi nhau?[a]--Bridge [b]--Router [c]--Repeater
[d]--Connector 5 - Giao thc no trong cc giao thc sau c th c s dng
dng trong m hnh mng LAN?[a]--TCP/IP [b]--IPX/SPX [c]--NetBEUI
[d]--Tt c phng n trn 6 - Giao thc no trong cc giao thc sau dng
trong m hnh mng WAN?[a]--TCP/IP [b]--NetBEUI [c]--DLC [d]--Tt c
phng n trn 7 - Mun h thng mng hot ng hiu qu ngi ta thng?[a]--Tng s
lng Collision Domain, gim kch thc cc Collision Domain [b]--Tng s
lng Collision Domain, tng kch thc cc Collision Domain [c]--Gim s
lng Collision Domain, gim kch thc cc Collision Domain [d]--Gim s
lng Collision Domain, tng kch thc cc Collision Domain 8 - Modem dng
?[a]--Giao tip vi mng [b]--Truyn d liu i xa [c]--Truyn d liu trong
mng LAN [d]--A v B u ng 9 - Cng ngh mng LAN s dng ph bin hin nay
l?[a]--Token Ring [b]--FDDI [c]--Ethernet [d]--ADSL 10 - Frame l d
liu tng?[a]--Physical [b]--Network [c]--DataLink [d]--Transport p n
cu 1 dp n cu 2 ap n cu 3 cp n cu 4 bp n cu 5 dp n cu 6 dp n cu 7 ap
n cu 8 bp n cu 9 cp n cu 10
c------------------11----------------------1 - Khi dng repeater m
rng cc on mng, ta c th?[a]--Dng ti a 4 repeater [b]--C ti a 5 on
mng [c]--C ti a 3 on mng [d]--A v B ng 2 - Pht biu no sau y l ng
nht cho Switch?[a]--S dng a ch vt l v hot ng ti tng Physical ca m
hnh OSI [b]--S dng a ch vt l v hot ng ti tng Network ca m hnh OSI
[c]--S dng a ch vt l v hot ng ti tng DataLink ca m hnh OSI [d]--S
dng a ch IP v hot ng ti tng Network ca m hnh OSI 3 - Thit b Hub cho
php?[a]--Ko di 1 nhnh LAN thng qua vic khuych i tn hiu truyn n n
[b]--Ngn khng cho cc packet thuc loi Broadcast i qua n [c]--Gip nh
tuyn cho cc packet [d]--Kt ni nhiu my tnh li vi nhau to thnh mt
nhnh LAN (segment) 4 - Thit b Bridge cho php?[a]--Gip nh tuyn cho
cc packet [b]--Kt ni 2 mng LAN li vi nhau ng thi ng vai tr nh mt b
lc (filter): ch cho php cc packet m a ch ch nm ngoi nhnh LAN m
packet xut pht, i qua [c]--Tng cng tn hiu in m rng on mng [d]--C A,
B, C u ng 5 - hn ch s ng ca cc gi tin trn 1 on mng, ngi ta chia mng
thnh cc mng nh hn v ni kt chng li bng cc thit b?[a]--Repeater
[b]--Hub [c]--Bridge hoc Switch [d]--Router 6 - di ti a cho php khi
s dng dy cp mng UTP l bao nhiu mt?[a]--100 [b]--200 [c]--350
[d]--400 7 - C bao nhiu vng va chm (collision domains) trong mng gm
88 my tnh, 10 Hub v 2 Repeater?[a]--1 [b]--10 [c]--12 [d]--100 8 -
iu g s xy ra vi d liu khi c va chm (collision)?[a]--Hub/Switch s gi
li d liu [b]--D liu s b ph hng tng bit mt [c]--D liu s c khi phc li
ti my nhn [d]--C A v C ng 9 - Cng ngh LAN no s dng k thut
CSMA/CD?[a]--Token Ring [b]--Ethernet [c]--FDDI [d]--Tt c cc cu trn
10 - Trang thit b mng no sau y lm gim bt s va chm
(collisions)?[a]--Hub [b]--NIC [c]--Switch [d]--Transceiver p n cu
1 dp n cu 2 cp n cu 3 dp n cu 4 bp n cu 5 cp n cu 6 ap n cu 7 cp n
cu 8 bp n cu 9 bp n cu 10 c------------12--------------------1 -
Trang thit b mng trung tm dng kt ni cc my tnh trong mng hnh sao
(STAR)?[a]--Switch/Hub [b]--Router [c]--Repeater [d]--NIC 2 - Gi s
ngi ta s b sung 1 bit kim tra vo cui ca dng d liu gi i sao cho tng
s bit 1 trong chui mi l mt s l. Bn nhn nhn c chui 1000101010001
th?[a]--Chui nhn c b li [b]--Chui nhn c ng hon ton [c]--C th pht
hin v sa c li trong chui bit ny [d]--Khng xc nh li trong chui nhn c
3 - Switch l thit b hot ng tng?[a]--Vt l [b]--Lin kt d liu [c]--Mng
[d]--Vn chuyn 4 - Cng ngh Ethernet s dng phng php truy cp mi trng
truyn no sau y?[a]--CSMA [b]--ALOHA [c]--CSMA/CD [d]--TDMA 5 - Nu 4
PCs kt ni vi nhau thng qua HUB th cn bao nhiu a ch IP cho 5 trang
thii b mng ny?[a]--1 [b]--3 [c]--4 [d]--2 6 - Kiu mng no c hn ch cp
ta cao c hay mt cng s?[a]--GAN [b]--WAN [c]--MAN [d]--LAN 7 - Trong
m hnh OSI, u l mi quan h ca mt tng (N) i vi tng bn trn n
(N+1)?[a]--Tng N cung cp cc dch v cho tng N+1 [b]--Tng N+1 b sung
mt phn u vo thng tin nhn c t tng N [c]--Tng N vn dng cc dch v do
tng N+1 cung cp [d]--Tng N khng c tc ng g ln tng N+1 8 - Giao thc
no dng tm a ch MAC khi bit a ch IP ca my tnh?[a]--RARP [b]--DHCP
[c]--TCP/IP [d]--ARP 9 - Giao thc TCP c th x l?[a]--Gi tin b mt
[b]--Cc gi tin b trng lp [c]--Cc gi tin khng theo th t [d]--Tt c cc
phng n trn 10 - Chng trnh Traceroute s dng cc giao thc no?[a]--UDP
[b]--UDP v ICMP [c]--TCP v ICMP [d]--IGMP p n cu 1 ap n cu 2 dp n
cu 3 bp n cu 4 cp n cu 5 cp n cu 6 dp n cu 7 ap n cu 8 dp n cu 9 dp
n cu 10 c
----------------------13-----------------1 - Mt b lc packet (ci
t trn firewall) c th?[a]--Ch cc my tnh pha trong mi c kh nng khi to
cc kt ni TCP ra cc my tnh bn ngoi mng [b]--Cho php FTP client bn
trong c th truy cp ti FTP server bn ngoi m my tnh bn trong khng b
hack [c]--Cho php FTP client bn ngoi c th truy cp ti FTP server bn
trong m my tnh bn trong khng b hack [d]--Tt c u ng 2 - Ethernet s
dng gii hn no di y c th pht hin xung t?[a]--Kch thc ti a ca frame l
2000 bytes [b]--Kch thc ti a ca frame l 46 bytes [c]--Kch thc ti a
ca cp b gii hn [d]--B v C u ng 3 - Chc nng ca Proxy l g?[a]--L my i
din cho mt nhm my i thc hin mt dch v my khch (client service) no
[b]--L mt thit b thng k lu lng mng [c]--Tt c u ng [d]--Tt c u sai 4
- Giao thc giao vn chy pha trn IP m khng cn thit lp kt ni trc khi
truyn l?[a]--UDP [b]--TCP [c]--HTTP [d]--FTP 5 - a ch IP no sau y
khng c dng kt ni trc tip trong mng Internet (khng tn ti trong mng
Internet)?[a]--126.0.0.1 [b]--192.168.98.20 [c]--201.134.1.2
[d]--Tt c cc cu trn 6 - Trong mng my tnh dng giao thc TCP/IP v
Subnet Mask l 255.255.255.224 hy xc nh a ch broadcast ca mng nu bit
rng mt my tnh trong mng c a ch l 192.168.1.1?[a]--192.168.1.31
[b]--192.168.1.255 [c]--192.168.1.15 [d]--192.168.1.96 7 - Dch v no
sau y m tng lin kt d liu no cng phi cung cp?[a]--t gi tin tng mng
vo cc Frame [b]--M ho cc bit thnh cc tn hiu vt l [c]--To ng truyn
tin cy [d]--Cu A v B u ng 8 - Giao thc no trong cc giao thc sau dng
trong m hnh mng LAN?[a]--TCP/IP [b]--IPX/SPX [c]--NetBEUI [d]--Tt c
9 - Trnh iu khin (driver) l?[a]--Phn cng [b]--Phn mm [c]--Thit b
ngoi vi [d]--Card 10 - Phng php truy nhp no di y lng nghe lu thng
mng trn cp trc khi gi d liu?[a]--a truy nhp cm tn hiu mang c d xung
t (CSMA/CD) [b]--a truy nhp cm tn hiu mang c trnh xung t (CSMA/CA)
[c]--Chuyn th bi [d]--H kim tra vngp n cu 1 ap n cu 2 dp n cu 3 ap
n cu 4 ap n cu 5 ap n cu 6 dp n cu 7 dp n cu 8 dp n cu 9 bp n cu 10
a------------------14----------------1 - Trong m hnh OSI, vic m v
ng cc cuc hi thoi gia cc my tnh l trch nhim ca?[a]--Tng phin
[b]--Tng giao vn [c]--Tng lin kt d liu [d]--Tng vt l 2 - My tnh A v
Z c a ch trn 2 SUBNET khc nhau. iu g xy ra khi my tnh A gi
broadcasts (ARP request) i tm a ch MAC ca my tnh Z?[a]--Khng c tr
li (no response) [b]--Router s tr li vi a ch MAC ca Z [c]--Router s
tr li vi a ch MAC ca mnh [d]--Router s gi tip yu cu (ARP request)
ti subnet ca Z v lc Z c th tr li A 3 - Giao thc RIP c trin khai
ti?[a]--My tnh u cui [b]--Router [c]--Hub [d]--Switch 4 - Giao thc
no trong s cc giao thc sau thuc tng mng?[a]--TCP [b]--Telnet
[c]--FTP [d]--IP 5 - iu g xy ra khi my tnh A gi broadcasts (ARP
request) i tm a ch MAC ca my tnh B trn cng mt mng?[a]--My ch DNS s
tr li A vi a ch MAC ca B [b]--Tt c cc my tnh trong mng u nhn c yu
cu (ARP request) v tt c s tr li A vi a ch MAC ca B [c]--Tt c cc my
tnh trong mng u nhn c yu cu (ARP request) nhng ch c B mi tr li A vi
a ch MAC ca mnh [d]--Cc Router gn nht nhn c yu cu (ARP request) s
tr li A vi a ch MAC ca B hoc s gi tip yu cu ny ti cc router khc
(forwards the request to another router) 6 - ng truyn tn hiu tng t,
ng truyn m thoi chun c s dng trong cc cuc giao tip qua in thoi gi l
ng truyn?[a]--Quay s [b]--Tn hiu s trc tip [c]--Any-to-any
[d]--Chuyn dng (thu bao) 7 - Mt bng nh tuyn s?[a]--H tr c ch pht
rng hng n cc a ch c th [b]--Lu tr a ch my tnh v mng [c]--Gi gi d
liu n thit b chuyn tip c a ch ng [d]--Cung cp a ch cho mi my tnh mi
c kch hot 8 - pht hin li trong gi tin, ngi ta s dng k thut?[a]--S
th t (sequence number) [b]--S th t ghi nhn (acknowledgement number)
[c]--B nh thi (timer) [d]--Checksum 9 - Khi thc th TCP gi mt gi
SYNACK segment vi trng Acknowledgement Number = 100, iu ny c ngha
l?[a]--Gi d liu n gi i bt u bng byte th 100 trong dng d liu
[b]--Byte d liu u tin trong dng d liu s gi i c s th t l 100 [c]--N
s gi t byte th 100 [d]--N hy vng nhn c d liu bt u bng byte c s th t
100 10 - Trong m hnh OSI, vic xc nh a ch vt l t a ch logic l trch
nhim ca?[a]--Tng ng dng [b]--Tng lin kt d liu [c]--Tng mng [d]--Tng
giao vn p n cu 1 ap n cu 2 dp n cu 3 bp n cu 4 dp n cu 5 cp n cu 6
ap n cu 7 bp n cu 8 dp n cu 9 dp n cu 10
b-----------------------------15------------------------1 - Hnh
trng mng no cho php tt c cc cp thit b u c 1 ng ni vt l trc
tip?[a]--Star (dng sao) [b]--Bus (dng ng trc) [c]--Mesh (dng li)
[d]--Hierarchical (dng phn cp) 2 - Giao thc no c router hay my tnh
s dng thng bo cho cc my tnh khc v tnh trng li?[a]--TCP [b]--UDP
[c]--IP [d]--ICMP 3 - M t no thch hp nht cho mng c topo dng
Ring?[a]--Cn t cp hn cc topo khc [b]--Phng tin r tin v d s dng
[c]--Mi my tnh u c quyn truy cp ngang nhau [d]--Cn c terminator c
th vn hnh thch hp 4 - My tnh ng vai tr Router c bao nhiu a ch
IP?[a]--1 [b]--2 [c]--3 [d]--4 5 - Trong gi d liu UDP (UDP
segment), vng d liu thc s bt u t byte th?[a]--4 [b]--5 [c]--8
[d]--9 6 - Mun h thng mng hot ng hiu qu ngi ta thng?[a]--Tng s lng
Collision Domain, gim kch thc cc Collision Domain [b]--Tng s lng
Collision Domain, tng kch thc cc Collision Domain [c]--Gim s lng
Collision Domain, gim kch thc cc Collision Domain [d]--Gim s lng
Collision Domain, tng kch thc cc Collision Domain 7 - Thit b Hub
cho php?[a]--Ko di 1 nhnh LAN thng qua vic khuych i tn hiu truyn n
n [b]--Ngn khng cho cc packet thuc loi Broadcast i qua n [c]--Gip
nh tuyn cho cc packet [d]--Kt ni nhiu my tnh li vi nhau to thnh mt
nhnh LAN (segment) 8 - Dch v mng no sau y phi da trn ICMP?[a]--DNS
[b]--Ping [c]--SMTP [d]--X Windows 9 - Gii php no sau y c th gii
quyt tnh trng khan him a ch IP?[a]--IPv6 [b]--Network Address
Translation [c]--Subnet mask [d]--Tt c cc phng n trn 10 - ng thc no
sau y m t chnh xc nht giao thc UDP?[a]--UDP = IP [b]--UDP = TCP -
(tnh tin cy) [c]--UDP = ICMP + (phn knh theo a ch cng) [d]--UDP =
TCP - IP p n cu 1 cp n cu 2 dp n cu 3 cp n cu 4 bp n cu 5 dp n cu 6
cp n cu 7 ap n cu 8 bp n cu 9 dp n cu 10
b----------------------------16--------------1 - u im ca chuyn gi
so vi chuyn mch knh l?[a]--Khng lng ph knh truyn khi truyn d liu
theo cc cm d liu ln [b]--Khng lng ph khi truyn cc lung d liu c tc
gi c nh [c]--Ci t trn cc thit b mng d hn [d]-- tr thp hn 2 - Nhc im
nu xy dng h thng dch v tn min (DNS) theo m hnh tp trung l?[a]--Nu
im tp trung b hng, ton b h thng s b t lit [b]--S lng yu cu phc v ti
im tp trung duy nht s rt ln [c]--Chi ph bo tr h thng rt ln [d]--Tt
c cu tr li trn 3 - Cc protocol TCP v UDP hot ng tng
no?[a]--Transport [b]--Network [c]--Application [d]--Presentation 4
- Phn no trong a ch IP c Router s dng khi tm ng i?[a]--Host address
[b]--Router address (a ch ca Router) [c]--FDDI [d]--Network address
(a ch mng) 5 - Trong Header ca IP Packet c cha?[a]--Source address
[b]--Destination address [c]--Khng cha a ch no c [d]--Source and
Destination addresses 6 - Lp no trong m hnh OSI ng gi d liu km theo
IP Header?[a]--Secssion [b]--Transport [c]--Network [d]--DataLink 7
- Trong mng my tnh dng giao thc TCP/IP v u dng Subnet Mask l
255.255.255.0 th cp my tnh no sau y lin thng?[a]--192.168.1.3 v
192.168.100.1 [b]--192.168.15.1 v 192.168.15.254
[c]--192.168.100.15 v 192.186.100.16 [d]--172.25.11.1 v 172.26.11.2
8 - a ch lp no cho php mn 15 bits chia subnets?[a]--Lp A [b]--Lp B
[c]--Lp C [d]--Khng cu no ng 9 - Lnh PING dng ?[a]--Kim tra cc my
tnh c a cng hay khng? [b]--Kim tra cc my tnh c hot ng tt hay khng?
[c]--Kim tra cc my tnh trong mng c lin thng khng? [d]--Kim tra cc
my tnh c truy cp vo Internet khng? 10 - Lnh no di y c dng xc nh ng
truyn (trong h iu hnh Windows)?[a]--nslookup [b]--ipconfig
[c]--Route [d]--Tracert p n cu 1 dp n cu 2 dp n cu 3 ap n cu 4 ap n
cu 5 dp n cu 6 cp n cu 7 bp n cu 8 ap n cu 9 cp n cu 10
d----------------------1 - Nhng thit b lp 1 no sau y c s dng m rng
mng LAN?[a]--Hub [b]--Switch [c]--Repeater [d]--Bridge 2 - Byte u
tin ca mt a ch IP c dng: 11000001. Vy n thuc lp no?[a]--Lp D
[b]--Lp E [c]--Lp C [d]--Lp A 3 - Byte u tin ca mt a ch IP c dng:
11100001. Vy n thuc lp no?[a]--Lp B [b]--Lp C [c]--Lp D [d]--Lp E 4
- Giao thc no thc hin truyn cc thng bo iu khin gia cc gateway hoc
trm ca lin mng?[a]--ARP [b]--ICMP [c]--RARP [d]--TCP 5 - Lnh ping s
dng cc gi tin no sau y?[a]--echo [b]--TTL [c]--SYN [d]--FIN 6 - Lp
no thc hin vic chn ng v chuyn tip thng tin; thc hin kim sot lung d
liu v ct/hp d liu?[a]--Session [b]--Network [c]--Transport
[d]--Data link 7 - Phng thc no m trong c hai bn u c th ng thi gi d
liu i?[a]--Full duplex [b]--Simplex [c]--Half duplex [d]--Phng thc
khc 8 - a ch IP no sau y l hp l?[a]--192.168.1.2
[b]--255.255.255.255 [c]--230.20.30.40 [d]--Tt c cc cu trn 9 - a ch
IP no sau y l a ch qung b cho mt mng bt k?[a]--172.16.1.255
[b]--255.255.255.255 [c]--230.20.30.255 [d]--Tt c cc cu trn 10 - a
ch 19.219.255.255 l a ch g?[a]--Broadcast lp B [b]--Broadcast lp A
[c]--Host lp A [d]--Host lp B p n cu 1 cp n cu 2 cp n cu 3 cp n cu
4 bp n cu 5 ap n cu 6 bp n cu 7 ap n cu 8 dp n cu 9 dp n cu 10
b----------2----------------1 - Trong kin trc phn tng mng, tng no c
lin kt vt l?[a]--Tng 1 [b]--Tng n [c]--Tng i [d]--Tng i 1 2 - Topo
mng cc b no m tt c cc trm phn chia chung mt ng truyn chnh?[a]--Bus
[b]--Star [c]--Ring [d]--Hybrid 3 - Dch v no cho php chuyn cc file
t trm ny sang trm khc, bt k yu t a l hay h iu hnh s dng?[a]--FTP
[b]--Telnet [c]--Email [d]--WWW 4 - Lp no cung cp phng tin truyn
thng tin qua lin kt vt l m bo tin cy?[a]--Physical [b]--Data link
[c]--Network [d]--Transport 5 - Byte u tin ca mt a ch IP c dng:
00000001. Vy n thuc lp no?[a]--Lp A [b]--Lp C [c]--Lp B [d]--Lp D 6
- Lp no cung cp phng tin truyn thng tin qua lin kt vt l m bo tin
cy?[a]--Physical [b]--Network [c]--Data link [d]--Transport 7 -
Thit b mng trung tm dng kt ni cc my tnh trong mng hnh sao
(STAR)?[a]--Switch/Hub [b]--Router [c]--Repeater [d]--NIC 8 - Lnh
no di y c dng xc nh ng truyn (trong h iu hnh Windows)?[a]--Nslookup
[b]--Route [c]--Ipconfig [d]--Tracert 9 - Lp no cung cp cc phng tin
ngi s dng c th truy nhp c vo mi trng OSI v cung cp cc dch v thng
tin phn tn?[a]--Transport [b]--Presentation [c]--Session
[d]--Application 10 - Tng hai trong m hnh OSI tch lung bit t Tng vt
l chuyn ln thnh?[a]--Frame [b]--Segment [c]--Packet [d]--PSU p n cu
1 ap n cu 2 ap n cu 3 ap n cu 4 bp n cu 5 ap n cu 6 cp n cu 7 ap n
cu 8 ap n cu 9 dp n cu 10 a--------3-------------1 - Cc trm hot ng
trong mt mng va nh my phc v (server), va nh my khch (client) c th
tm thy trong mng no?[a]--Client/Server [b]--Ethernet [c]--Peer to
Peer [d]--LAN 2 - kt ni trc tip hai my tnh vi nhau ta c th
dng?[a]--Cp cho (Cross- Cable) [b]--Cp thng ( Straight Cable)
[c]--Rollover Cable [d]--Khng c loi no 3 - M hnh phn lp OSI c bao
nhiu lp?[a]--7 [b]--4 [c]--5 [d]--2 4 - Cc n v d liu giao thc trong
lp 2 ca m hnh OSI c gi l?[a]--PDU [b]--Packet [c]--CSU [d]--Frame 5
- Mt mng con lp A mn 5 bit chia subnet th SM s l?[a]--255.248.0.0
[b]--255.255.255.1 [c]--255.255.255.248 [d]--255.255.255.128 6 - Mt
mng con lp A mn 7 bit chia subnet th SM s l?[a]--255.255.254.192
[b]--255.254.0.0 [c]--255.248.0.0 [d]--255.255.255.254 7 - Mt mng
con lp A cn cha ti thiu 255 host s dng SM no sau
y?[a]--255.255.254.0 [b]--255.0.0.255 [c]--255.255.255.240
[d]--255.255.255.192 8 - Mt mng con lp A mn 1 bit chia subnet th SM
s l?[a]--255.255.128.0 [b]--255.128.0.0 [c]--255.255.255.240
[d]--255.255.128.0 9 - Mt mng con lp B mn 5 bit chia subnet th SM s
l?[a]--255.255.248.0 [b]--255.255.255.1 [c]--255.255.255.248
[d]--255.255.255.128 10 - Mt mng con lp B mn 7 bit chia subnet th
SM s l?[a]--255.255.254.0 [b]--255.255.254.192 [c]--255.255.255.240
[d]--255.255.255.254 p n cu 1 cp n cu 2 ap n cu 3 ap n cu 4 dp n cu
5 ap n cu 6 bp n cu 7 ap n cu 8 bp n cu 9 ap n cu 10
a--------------------4------------------1 - Thit b chn ng (Router)
hot ng tng no trong m hnh OSI?[a]--Tng vt l (Physical Layer)
[b]--Tng mng (Network Layer) [c]--Tng Lin kt d liu (Data Link
Layer) [d]--Tng phin (Session Layer) 2 - Cho mt n mng con (Subnet
mask): 255.255.248.0. Hy cho bit vi cc a ch IP di y nu s dng subnet
mask trn, nhng a ch no c cng a ch mng?[a]--172.16.8.15
[b]--172.16.16.120 [c]--172.16.12.212 [d]--172.16.15.101 3 - Cho a
ch IP 192.168.14.100 v mt n mng con (Subnet mask): 255.255.255.224.
S a ch Host c th cp pht tng ng vi a ch IP v mt n mng con trn
l?[a]--32 [b]--6 [c]--30 [d]--16 4 - Cho a ch IP 192.168.14.100 v
mt n mng con (Subnet mask): 255.255.255.224. a ch mng tng ng vi a
ch IP v mt n mng con trn l?[a]--192.168.14.96 [b]--192.168.14.97
[c]--192.168.14.95 [d]--192.168.14.98 5 - Cho a ch IP
192.168.14.100 v mt n mng con (Subnet mask): 255.255.255.224. Di a
ch IP tng ng vi a ch IP v mt n mng con trn l?[a]--192.168.14.89
-> 192.168.14.111 [b]--192.168.14.97 -> 192.168.14.127
[c]--192.168.14.97 -> 192.168.14.126 [d]--192.168.14.96 ->
192.168.14.128 6 - Cho a ch IP 192.168.14.100 v mt n mng con
(Subnet mask): 255.255.255.224. a ch IP qung b (Broadcast IP
Address) tng ng vi a ch IP v mt n mng con trn l?[a]--192.168.14.125
[b]--192.168.14.159 [c]--192.168.14.127 [d]--192.168.14.111 7 - Cho
a ch IP 160.16.18.30 v mt n mng con (Subnet mask): 255.255.252.0. S
a ch Host c th cp pht tng ng vi a ch IP v mt n mng con trn
l?[a]--1020 [b]--1021 [c]--1024 [d]--1022 8 - Cho a ch IP
160.16.18.30 v mt n mng con (Subnet mask): 255.255.252.0. a ch mng
tng ng vi a ch IP v mt n mng con trn l?[a]--160.16.15.0
[b]--160.16.17.0 [c]--160.16.16.0 [d]--160.16.18.0 9 - Cho a ch IP
160.16.18.30 v mt n mng con (Subnet mask): 255.255.252.0. Di a ch
IP tng ng vi a ch IP v mt n mng con trn l?[a]--160.16.16.1 ->
160.16.18.254 [b]--160.16.17.1 -> 160.16.18.254 [c]--160.16.16.1
-> 160.16.19.254 [d]--160.16.18.1 -> 160.16.19.254 10 - Cho a
ch IP 160.16.18.30 v mt n mng con (Subnet mask): 255.255.252.0. a
ch IP qung b (Broadcast IP Address) tng ng vi a ch IP v mt n mng
con trn l?[a]--160.16.18.255 [b]--160.16.19.255 [c]--160.16.17.255
[d]--160.16.18.254 p n cu 1 bp n cu 2 ap n cu 3 cp n cu 4 ap n cu 5
cp n cu 6 cp n cu 7 dp n cu 8 cp n cu 9 cp n cu 10 b