1. CHNG 1

Stt Cu hi v p n

1

Mng my tnh l A. Cc my tnh kt ni vi nhau qua h thng cp trao i thng tin B. Cc my tnh trao i thng tin vi nhau theo tp giao thc mng C. Cc my tnh kt ni qua mi trng truyn tin v trao i thng tin theo mt kin trc mng xc nh D. Cc my tnh kt ni vi nhau chia s ngun thng tin chung

2

Mng my tnh l A. Cc thit b x l thng tin kt ni vi nhau bng ng truyn vt l trao i thng tin B. Cc my tnh kt ni qua mi trng truyn tin trao i thng tin vi nhau C. Cc my tnh trao i thng tin vi nhau theo tp giao thc tng ng D. Cc thit b x l thng tin kt ni qua mi trng truyn tin trao i thng tin vi nhau

3

Li ch ca mng my tnh mang li l A. Tng kh nng pht hin v chng thm nhp mng bt hp php B. Rt ngn thi gian trao i thng tin C. Gip bo v thng tin ti cc nt mng tt hn D. To nhiu c hi thun li cho cng vic, kinh doanh,

4

Li ch ca mng my tnh mang li l A. Gip cho cc mng khng tng thch trao i thng tin vi nhau B. Cho php chn la cc loi my tnh ca cc hng khc nhau kt ni mng C. Tng tc x l thng tin D. Chia s thng lng mt cch hp l

5

Li ch ca mng my tnh mang li l A. Ngi s dng c kh nng chn la cc loi thit b ca nhiu hng khc nhau B. Tng hiu qu khai thc, x l thng tin v tin cy ca h thng C. D dng trong cng tc thit k, xy dng v ci t cc mng my tnh D. Cho php s dng cc ng truyn mt cch hp l

6

Pht biu no sau y l sai khi ni v li ch ca mng my tnh A. Gip ngi s dng tip cn c nhiu hnh thc gii tr hn nh xem phim, game online, B. Cho php chia s ti nguyn gip tit kim kinh ph v qun l tt hn C. Cho php ngi s dng trao i thng tin mt cch nhanh chng v hiu qu D. To nhiu c hi thun li cho vic hc tp, hi tho, kinh doanh,

7

Pht biu no di y l sai khi ni v cc thnh phn ca mng my tnh A. Cc thit b u cui nh my tnh, my in, in thoi di ng, kt ni vi nhau to thnh mng B. Phng tin truyn thng chuyn i tn hiu v truyn thng tin i C. Cc thit b kt ni mng nh v mng (NIC - Network Interface Card), b chuyn mch (Switch), b nh truyn (Router), Cc thit b ny kt hp vi phng tin truyn thng kt ni cc thit b u cui vi nhau D. Giao thc truyn thng qui nh cch trao i thng tin gia cc thit b gi v nhn trong mng

8

Cc thng s c trng ca ng truyn l A. Gii thng, nhiu in t, suy hao, thng lng B. Thng lng, nhiu in t, suy hao v lu lng C. nhiu in t, suy hao, thng lng v t trng D. suy hao, nhiu in t, thng lng v kch thc

9

Cc thng s c trng ca ng truyn l A. Thng lng, nhiu in t, suy hao v lu lng B. nhiu in t, suy hao v gii thng C. suy hao, thng lng v t trng D. suy hao, nhiu in t, thng lng v kch thc

10

Cc thng s c trng ca ng truyn l A. Thng lng, nhiu in t, suy hao v lu lng B. nhiu in t, suy hao thng lng v kch thc C. suy hao, thng lng v gii thng D. suy hao, nhiu in t v tr truyn n

11

Thng lng (throughput) ca ng truyn vt l l A. suy yu ca tn hiu trn ng truyn B. Tn s m n c th p ng c C. Tc truyn d liu trn ng truyn , tnh bng bps D. Tc truyn d liu trn ng truyn , tnh bng Mbps

12

Thng lng (throughput) ca ng truyn vt l l A. suy yu ca tn hiu trn ng truyn, tnh bng m/s B. Tc truyn d liu trn ng truyn , tnh bng baud C. Phm vi tn s m n c th p ng c D. Tc truyn d liu trn ng truyn , tnh bng Mbps

13

Chn v d tng ng vi thng lng (throughput) ca ng truyn vt l A. Tc ti a m cc xe c th chy c B. S loi xe chy c trn con ng C. rng ca con ng D. S lng xe chy trn con ng

14

Gii thng (bandwidth) ca ng truyn vt l l A. suy yu ca tn hiu trn ng truyn B. Tc truyn d liu trn ng truyn , tnh bng Mbps C. Tc truyn d liu trn ng truyn , tnh bng bps D. Phm vi tn s m n c th p ng c

15

Gii thng (bandwidth) ca ng truyn vt l l A. Phm vi tn s m n c th p ng c B. Tc truyn d liu trn ng truyn , tnh bng baud C. Tc truyn d liu trn ng truyn , tnh bng bps D. Tn s truyn tn hiu trn ng truyn, tnh bng Hz

16

Chn v d tng ng vi gii thng (bandwidth) ca ng truyn vt l A. Tc ti a m cc xe c th chy c B. S loi xe chy c trn con ng C. rng ca con ng D. S lng xe chy trn con ng

17

Chn giao thc s dng cho mng cp quang hc A. CDDI B. SONET C. X25 D. FDDI

18

Khng nh no khng ng i vi cp quang hc A. Khng b nhiu B. Khng b nghe trm C. Khng b suy hao tn hiu D. Ch truyn c tn hiu quang

19

bps v baud A. L hai n v o hon ton khc nhau B. L hai n v o c th ging nhau, cng c th khc nhau C. L hai n v o hon ton ging nhau khi o cng mt loi tn hiu D. baud ch dng o tn hiu in t

20

bps v baud A. L hai n v o hon ton khc nhau B. L hai n v o hon ton ging nhau C. L hai n v o ging nhau khi o d liu nh phn D. baud khng phi n v o thng tin

21

Khng nh no ng khi ni v u im ca truyn s so vi truyn analog A. Tc truyn cao hn B. Gim c li do suy gim v nhiu trn ng truyn gy ra C. Thit b dng chung cho c thoi, s liu, hnh nh, m nhc D. Tt c u ng

22

Khng nh no ng khi ni v u im ca truyn s so vi truyn analog A. tin cy cao v ch c 2 gi tr 0 v 1 B. Gim c li do suy gim v nhiu trn ng truyn gy ra C. Gi r hn nh gi my tnh v vi mch ngy cng r D. Tt c u ng

23

Khng nh no ng khi ni v u im ca truyn s so vi truyn analog A. c ngi dng u chung hn B. Tc truyn nhanh hn C. Thit b s nhiu v d mua hn D. Truyn c trn nhiu loi ng truyn khc nhau

24

Khng nh no ng khi ni v u im ca truyn s so vi truyn analog A. Phn mm x l n gin hn B. S dng nhiu tn s hn C. Thit b truyn s dng chung cho c in thoi, s liu, m nhc, v.v D. D chn la thit b hn

25

Cu hnh mng (Topology) c hiu l A. Cc qui c truyn thng trn mng B. S kt ni vt l cc my tnh trong mng C. Cch kt ni cc thit b vt l trong mng D. Cc phn mm iu khin mng

26

Khng nh no sau y ni v cu trc vt l ca mng A. Giao thc mng (Protocol) B. Cu hnh mng (Topology ) C. Phng tin truyn D. Cc dch v mng

27

Mng thng tin no sau y s dng cu hnh theo kiu im-im A. Mng Vina Phone B. Mng Mobi Phone C. Mng in thoi ni ht D. Mng truyn hnh

28

Mng kiu im- im gi l mng A. Lu v gi tip (Store - and - Forward) B. Chuyn mch gi C. Chuyn tip khung D. Chuyn mch knh

29

Cu hnh no c c im cc nt s dng chung mt ng truyn vt l A. Tree B. Loop C. Ring D. Complet

30

Cu hnh no c c im cc nt s dng chung mt ng truyn vt l A. Tree B. Loop C. Star D. Bus

31

Giao thc mng (protocol) c hiu l A. Cc qui c truyn thng trn mng B. S kt ni vt l cc my tnh trong mng C. Cc phn mm iu khin mng D. Cch kt ni cc thit b vt l trong mng

32

cc my tnh trong mng giao tip c vi nhau, cn c iu kin g A. Cc my tnh ch cn tun th mt qui tc truyn thng no B. Cc my tnh ch cn kt ni vt l vi nhau C. Cc my tnh phi kt ni vt l vi nhau v tun th cc qui tc truyn thng thng nht D. Cc my tnh phi kt ni vt l vi nhau v tun th cc qui tc truyn thng bt k

33

Da trn khong cch a l ta c cc mng sau A. MAN, LAN, VAN, GAN B. LAN, WAN, MAN, VAN C. WAN, LAN, VAN, GAN D. Tt c u sai

34

Trong cc v d nu ra sau y, hy xc nh v d m t ng v mng WAN A. Cc my tnh ca cc nh ga ln trong nc nh ga H Ni, ga Nng, ga Si Gn, kt ni vi nhau dng chung d liu B. Cc my tnh ca cc nc trn th gii kt ni vo phng CHAT tn gu vi nhau C. Cc my tnh cc phng ca mt trng hc kt ni vi nhau dng chung d liu, my in, v trao i thng tin vi nhau D. Tt c u sai

35

Trong cc v d nu ra sau y, hy xc nh v d m t ng v mng LAN A. Cc my tnh ca cc nh ga ln trong nc nh ga H Ni, ga Nng, ga Si Gn, kt ni vi nhau dng chung d liu B. Hai my tnh v mt my in kt ni vo mt Printer Switch Box (thit b cho php nhiu my tnh dng chung mt my in) trong tim potocopy C. Hai my tnh ca hai nh cnh nhau kt ni Internet dng chung d liu v trao i thng tin vi nhau D. Tt c u sai

Da trn k thut chuyn mch ta c cc mng sau

36

A. Chuyn mch knh, chuyn mch thng bo, chuyn mch tp trung B. Chuyn mch knh, chuyn mch gi, chuyn mch thng bo C. Chuyn mch phn tn, chuyn mch knh, chuyn mch tp trung D. Chuyn mch tp trung, chuyn mch gi, chuyn mch thng bo

37

i vi mng chuyn mch knh th A. Hiu xut s dng ng truyn cao B. Thi gian truyn qua mng nhanh C. Tiu tn thi gian cho vic thit lp knh c nh gia hai thc th D. Cc nt mng c th x l ton b gi tin trong b nh m khng cn lu tr tm thi trn a

38

i vi mng chuyn mch thng bo th A. Hiu sut cao hn mng chuyn mch gi B. Mi nt mng c th lu tr thng bo cho ti khi knh truyn ri mi chuyn thng bo i, do gim tnh trng tc nghn trn mng C. Kch thc ca thng bo 512 bytes D. Thng bo c th gi i bng nhiu ng khc nhau

39

i vi mng chuyn mch gi th A. Hiu sut cao hn mng chuyn mch thng bo B. C nhiu u im, khng c nhc im ng k C. Cc gi c kch thc thay i nhng phi l lu tha ca c s 2 D. Cn b nh m lu tr tm thi cc gi

40

Mng dch v tch hp s l s kt hp ca cc k thut A. Chuyn mch knh, chuyn mch gi v chuyn mch thng bo B. Chuyn mch knh v chuyn mch thng bo C. Chuyn mch gi v chuyn mch thng bo D. Chuyn mch knh v chuyn mch gi

41

i vi mng tp trung th A. Cc chng trnh iu khin mng nm trn cc my ch v my khch B. Cc chng trnh iu khin mng nm trn cc my ch C. Cc chng trnh iu khin mng nm trn my khch D. Cc chng trnh iu khin mng nm trn mt my ch

42

i vi mng phn tn th cu no sau y l sai A. Cc my c th cung cp ti nguyn ca mnh cho cc my khc B. Ch bo mt km C. Cc my c th s dng ti nguyn ca cc my khc trong mng D. Xy dng v bo tr phc tp

43

Chn p n khng phi c trng ca mng khch/ch A. Cc ti nguyn c qun l v chia s mt cch c t chc B. Phn ln ti nguyn quan trng tp trung ti cc Server C. Tnh an ton v bo mt cao D. Thch hp vi qui m nh

44

Chn p n khng phi c trng ca mng ngang hng A. Chi ph lp t thp v d s dng B. Cc my c vai tr nh mt Server C. Cn c Server chuyn dng v ngi qun tr chuyn nghip qun l ti nguyn v ngi s dng D. Cc my c vai tr nh nhau v ngi s dng phi t qun l ti nguyn ca mnh

45 Mng no c cc my va lm my khch va lm my phc v A. Peer to Peer

B. Client / Server C. LAN D. Ethernet

46

Xc nh pht biu ng v my Ch (Server) A. Qun l v cung cp ti nguyn cho cc ti khon trong my B. S dng ti nguyn do my khc cung cp C. Yu cu my khc cung cp ti nguyn cho mnh D. Qun l v iu khin cc ti khon trong mng

47

Xc nh pht biu ng v my Khch (Client) A. Qun l v cung cp ti nguyn cho cc my trong mng B. S dng cc dch v thng tin trong mng C. p ng cc yu cu ca cc my khc trong mng D. Phi c cu hnh mnh, lu tr c nhiu thng tin p ng yu cu ca my khc

48

Chn pht biu khng ng vi ngha ca kin trc phn tng A. D dng trong cng tc thit k, xy dng v ci t cc mng my tnh B. S lng, tn gi v chc nng ca mi tng s c ngi thit k mng my tnh c th quy nh C. Mi tng c xy dng trn c s tng k lin trc . Nh vy, tng di c hiu l tng cung cp cc dch v cho tng trn D. Giao thc, vn k thut v cng ngh cho mi tng c trin khai theo trnh t t di ln

49

Chn pht biu khng ng vi m hnh OSI A. Gii quyt c vn khng tng thch gia cc mng B. Tt c cc mng ngy nay u p dng m hnh ny C. L khung chun v kin trc mng lm cn c cho cc nh nghin cu v thit k mng to ra cc sn phm m v mng D. Gip ngi s dng c th chn la cc loi thit b ca nhiu hng khc nhau

50

Chn pht biu khng ng vi cc nguyn tc ch yu xy dng m hnh OSI A. M t dch v tng cng n gin cng tt B. Gii hn s lng tng mc cn thit C. Khi hiu chnh chc nng hay giao thc ca mt tng, cc tng khc khng b nh hng theo D. C th gp cc tng con thnh mt tng nhng khng c hu b cc tng con

51

Trong m hnh OSI, tng 1 l tng A. Physical B. Session C. Data Link D. Network Access

52

Trong m hnh OSI, tng 2 l tng A. Transport B. Session C. Data Link D. Network

53

Trong m hnh OSI, tng 3 l tng A. Transport B. Internet C. Session D. Network

54 Trong m hnh OSI, tng 4 l tng A. Transport

B. Session C. Data Link D. Network

55

Trong m hnh OSI, tng 5 l tng A. Transport B. Session C. Presentation D. Network

56

Trong m hnh OSI, tng 6 l tng A. Transport B. Session C. Presentation D. Network

57

Trong m hnh OSI, tng 7 l tng A. Transport B. Application C. Presentation D. Physical

58

Chc nng ca tng vt l trong m hnh OSI l A. Gii quyt cc vn lin quan n ng truyn nh: nh tuyn, kim sot lung d liu, ... B. Truyn cc dng bit c cu trc qua h thng ng truyn C. Ni, duy tr, ngt cc lin kt vt l D. Tt c u ng

59

Chn pht biu khng ng vi tng vt l trong m hnh OSI A. D liu khng c phn Header cha thng tin iu khin B. ng gi v truyn cc Frame nh phn qua ng ttruyn C. Khng c n v d liu cho tng vt l D. Cung cp cc phng tin in, c, chc nng, th tc gii quyt cc vn lin quan

60

Cung cp cc phng tin truyn thng tin qua lin kt vt l m bo tin cy l chc nng ca tng no ? A. Network B. Transport C. Session D. Data Link

61

Tng no trong m hnh OSI chuyn lung bit thnh Frame A. Session B. Presentation C. Data Link D. Network

62

Tng no trong m hnh OSI chuyn packet thnh Frame A. Tng phin B. Tng mng C. Tng giao vn D. Tng lin kt d liu

63

Chn ng, kim sot lung d liu l chc nng ca tng no A. Transport B. Session C. Data Link D. Network

64

Chuyn tip thng tin v ct/hp d liu l chc nng ca tng no A. Transport B. Network C. Data Link D. Physical

65

Chc nng ca tng giao vn l A. m bo cc yu cu truyn d liu qua cc phng tin vt l B. M ho d liu bo mt thng tin trn trn ng truyn C. Thc hin vic truyn d liu t nt n nt D. Nn d liu vic truyn qua mng nhanh hn

66

Cung cp cc dch v truyn d liu trong sut i vi cc tng trn l chc nng ca tng no A. Transport B. Physical C. Session D. Presentation

67

Tng no di y thit lp, duy tr, hu b cc giao dch" gia cc thc th u cui? A. Tng phin B. Tng lin kt d liu C. Tng mng D. Tng vt l

68

iu khin cc cuc lin lc l chc nng ca tng no? A. Presentation B. Transport C. Session D. Data Link

69

Tng no trong m hnh OSI thc hin nn v m ho d liu A. Network B. Presentation C. Session D. Transport

70

Chc nng ca tng trnh din l chuyn i A. D liu tng ng dng thnh cc Frame B. Khun dng ca gi tin ph hp vi cc tng k trn v di C. Cc phin truyn thng gia cc thc th D. D liu ngi s dng thnh d liu chung ca mng

71

Tng no xc nh giao din gia ngi s dng v mi trng OSI ? A. Physical B. Data Link C. Presentation D. Application

72

Tng no cung cp cc dch v thng tin phn tn? A. Tng giao vn B. Tng ng dng C. Tng trnh by D. Tng phin

73

M hnh OSI theo quan im h thng th A. D liu khi xung n tng N-1 s c thm phn thng tin iu khin ca tng N-1 to thnh mt n v d liu ca tng N-1 B. h thng nhn, khi qua mi tng, phn thng tin iu khin tng ng s c phn tch v ct b trc khi chuyn ln tng trn C. Khng c s thm vo v bt i thng tin trong qu trnh truyn tin D. h thng gi, d liu khi i qua cc tng s c chia thnh cc gi nh hn

74

M hnh OSI theo quan im h thng th A. Ton b d liu tng trn s tr thnh mt n v d liu ca tng di B. Phn thng tin iu khin ca mi tng s c thm vo cui n v d liu C. Sau khi x l, tng di s chuyn ton b d liu ln tng trn D. Sau khi x l, tng trn s chuyn n v d liu ca mnh xung tng di

75

Khi d liu c chuyn t tng trn xung tng di k n, gi d liu c b sung thm thng tin iu khin trong phn A. a ch B. Option C. Vng kim sot li D. Header

76

Hm Confirm c s dng xc nhn hon tt mt chc nng c gi t trc bi hm nguyn thy A. Connect B. Indication C. Response D. Request

77

Hm Response c s dng tr li mt chc nng c gi t trc bi hm nguyn thy A. Connect B. Indication C. Confirm D. Request

78

Chn pht biu ng vi phng thc hot ng c lin kt A. tin cy cao nhng ci t kh phc tp B. tin cy cao v ci t n gin C. Nh tin cy cao nn qu trnh truyn rt n gin D. Khng cn thit lp lin kt vt l

79

Chn pht biu ng vi phng thc hot ng khng c lin kt A. tin cy thp nhng ci t kh phc tp B. Cc gi d liu c truyn c lp theo nhiu ng khc nhau C. Qu trnh truyn c qun l v kim sot cht ch D. Qu trnh tip nhn cc gi h thng ch n gin

80

Vi phng thc hot ng c lin kt th s c bao nhiu th tc chnh xy dng cc dch v v giao thc chun theo kiu OSI A. 12 B. 16 C. 4 D. 3

81

Vi phng thc hot ng khng c lin kt th s c bao nhiu th tc chnh xy dng cc dch v v giao thc chun theo kiu OSI A. 12 B. 16 C. 3 D. 4

83

Trong m hnh OSI, khi trao i thng tin th 2 tng k nhau s s dng cc hm dch v nguyn thu nh sau A. Tng N+1 ca A gi hm Request cho tng N ca A B. Tng N ca A gi hm Indication cho tng N ca B C. Tng N ca B gi hm Response cho tng N ca A D. Tng N+1 ca B gi hm Confirm cho tng N ca B

84 Chn quy trnh hp l trong qu trnh chuyn i d liu A. DataFrameSegmentPacketBit

B. DataPacketSegmentFrameBit C. DataSegmentPacketFrameBit D. DataSegmentFramePacketBit

85

Chn quy trnh hp l trong qu trnh chuyn i d liu A. BitFramePacketSegmentData B. BitSegmentPacketFrameData C. BitFrameSegmentPacketData D. BitSegmentFramePacketData

86

Mc ch ca vic chun ho mng my tnh l A. M rng kh nng trao i thng tin gia cc mng khc nhau B. Cc giao thc v k thut ca mi tng c th nghin cu v trin khai c lp C. Mi tng c xy dng da trn c s tng k lin trc D. A v C u ng

87

Chn pht biu khng phi l tn gi ca t chc chun ho A. ISO B. CCITT C. ANSIC D. IEEE

88

Card mng (NIC) l thit b A. Kt ni cc mng vi nhau B. Cung cp kh nng truyn thng gia cc my tnh trn mng C. c xc nh bi a ch vt l 16 byte D. Cung cp kh nng tng thch vi cc loi ng truyn

89

kt ni cc mng li vi nhau ta s dng A. Router B. NIC C. Multiplexer D. Switch

90

kt ni cc mng li vi nhau ta s dng A. Repeater B. Transducer C. Brigde D. Hub

91

Cc mng s dng giao thc khc nhau c th kt ni v giao tip bng A. Router B. Repeater C. Socket D. Hub

92

Mng hnh RING s dng thit b no A. Router B. Repeater C. T-Connector D. Terminator

93

Mng hnh BUS s dng thit b no A. Router B. Repeater C. T-Connector D. Terminator

94

Mng hnh STAR s dng thit b no A. Router B. Brigde C. T-Connector D. Switch

95

Chn pht biu ng vi thit b Modem A. C chc nng chuyn i tn hiu s sang analog v ngc li B. L thit b lin mng C. Cho php s dng in thoi v Internet cng lc D. A, B v C u ng

Chng 2: KIN TRC PHN TNG OSI

Stt Cu hi v p n

1

DTE l khi nim ch A. Cc thit b u cui d liu B. Modem, Multiplexer C. Terminal, Transducer D. Cc thit b cui knh d liu

2

DCE l khi nim ch A. Cc thit b u cui d liu B. Modem, my tnh C. Terminal, Transducer D. Cc thit b cui knh d liu

3

DTE l khi nim ch A. Repeater, Router B. My tnh PC, My in C. My tnh Main Frame, Multiplexer D. Repeater, Brigde

4

DCE l khi nim ch A. My tnh Main Frame, My in B. Modem, my tnh C. Multiplexer, Transducer D. Repeater, Terminal

5

Chun RS-232-C nh ngha giao din tng vt l gia A. My tnh v Modem B. Modem v Repeater C. My tnh v DTE D. DCE v DCE

6

Chun RS-449, RS-422-A, RS-423-A nh ngha giao din tng vt l gia A. My tnh v DTE B. Modem v DCE C. My tnh v DCE D. DTE v DTE

7

Chn pht biu ng vi cc chun RS-449, RS-422-A, RS-423-A A. Tc tn hiu qua giao din nh hn chun RS-232-C B. S dng cng ngh n bn dn C. Qui nh cc tn hiu s 0 v 1 tng ng vi cc tn hiu in 3V D. S dng u ni 25 chn, chia lm hai hng

8

Chn pht biu ng vi cc chun RS-232-C, V24 A. S dng du ni 35 chn, chia lm hai hng B. Tc tn hiu qua giao din

9

Giao thc BSC/Basic Mode thuc nhm giao thc A. D b hng k t B. ng b hng k t C. D b hng bit D. ng b hng bit

10

Giao thc HDLC thuc nhm giao thc A. D b hng k t B. ng b hng k t C. D b hng bit D. ng b hng bit

11

Vi giao thc BSC/Basic Mode, chn pht biu sai A. ENQ: yu cu tr li t mt trm xa B. ETB: k t kt thc an tin C. DLE EOT: ngng truyn tin tm thi D. ETX: kt thc vng d liu

12

Vi giao thc BSC/Basic Mode, chn pht biu sai A. EOT: kt thc truyn trong qu trnh truyn d liu B. EOT B ENQ: mi B truyn tin C. B ENQ: mi B nhn tin D. EOT B ENQ: mi B nhn tin

13

Khun dng Frame tng qut ca giao thc BSC/Basic Mode nh sau A. SOH HEADER STX ... Text ... ETX/ETB BCC B. SOH HEADER EOH STX ... Text ... ETX BCC C. SOH HEADER STX ... Text ... ETX BCC D. SOH HEADER STX ... Text ... ETB BCC

14

Vi khun dng Frame tng qut ca giao thc BSC/Basic Mode, chn pht biu sai A. Header: bao gm a ch ni nhn, s gi tin, bin nhn ACK/NAK, B. BCC: dng 8 bit kim tra li theo kiu parity cho cc k t thuc vng Text vi Basic Mode C. BCC: dng 16 bit kim tra li theo kiu CRC cho cc k t thuc vng Text vi BSC D. Vng d liu Text c kch thc bt k

15

Vi giao thc BSC/Basic Mode, trng thi phc hi s gi A. EOT B ENQ n ln B. B ENQ n ln C. ENQ n ln D. EOT n ln

16

Vi giao thc HDLC, xu bit cn truyn i l 0111111010011111100111110001111110, khi qua tng Data Link ta c xu bit l A. 01111110...1001111101001111100...01111110 B. 011111010...1001111101001111100...011111010 C. 01111110...10011111010011111000...01111110 D. 011111010...100111111001111100...011111010

17

Vi giao thc HDLC, chn pht biu sai A. Frame loi U dng thit lp, hu b lin kt d liu B. Frame loi S l frame iu khin C. Frame loi U dng kim sot li, kim sot lung d liu D. Frame loi U l frame iu khin

18

Vi giao thc HDLC, chn pht biu sai A. Frame loi I dng truyn d liu B. Frame loi I dng thng bo cc frame ang gi, nhn tt C. Frame loi S dng kim sot li, kim sot lung d liu D. Frame loi U dng kim sot lung d liu

19

Chn pht biu sai v k thut chn ng A. K thut chn ng l chn ng i ti u cho cc gi tin t trm ngun n trm ch B. K thut chn ng bao gm c thut ton chn ng, cc tiu chun thc hin v s cp nht thng tin C. K thut chn ng l mt phn ca phn mm lp mng D. Tt c cc k thut chn ng u thch nghi c vi mi s thay i trn mng

20

Tn ti mt trung tm iu khin thc hin vic chn ng, cc nt mng c th khng gi thng tin tng th v trung tm iu khin, trung tm iu khin s cp nht cc bng chn ng theo cc thng tin nhn c t cc nt mng. y l k thut chn ng no ? A. K thut chn ng tp trung B. K thut chn ng khng thch nghi C. K thut chn ng thch nghi D. K thut chn ng phn tn

21

Tn ti mt trung tm iu khin thc hin vic chn ng, vic chn ng thc hin m khng c s trao i thng tin, Tiu chun chn ng v bn thn con ng c chn mt ln cho ton cuc. y l k thut chn ng no ? A. K thut chn ng tp trung B. K thut chn ng thch nghi C. K thut chn ng khng thch nghi D. K thut chn ng phn tn

22

Giao thc X25 PLP nh ngha giao din tng mng gia A. DTE/DTE B. DTE/DCE C. DCE/DCE D. DTE/DTE v DTE/DCE

23

Giao thc X25 PLP nh ngha lin kt PVC l A. Lin kt o tm thi, c thit lp v xo b bi cc th tc ca X25 PLP B. Lin kt o c thit lp vnh vin khng cn cc th tc ca X25 PLP C. Lin kt o tm thi, khng cn cc th tc ca X25 PLP D. Lin kt o vnh vin, khng b tc ng bi cc th tc ca X25 PLP

24

Chn pht biu sai v giao thc X25 PLP A. C hai loi khun dng tng qut cho cc gi tin X25 PLP B. C bn loi khun dng tng qut cho cc gi tin X25 PLP C. Khun dng gi tin d liu thng dng chun nh s theo modulo 8 D. Khun dng gi tin d liu thng dng m rng nh s theo modulo 128

25

Mng X25 c cc c ch kim sot li, iu khin lung, cung cp cc dch v tin cy, tc trao i thng tin ti a l A. 128 Kbps B. 100 Kbps C. 64 Kbps D. 100 Mbps

26 Vi k thut Frame Relay th cu no sau y l sai A. Chc nng chn ng c thc hin tng Data link B. Khun dng tng qut ca Frame ging nh Frame ca HDLC

C. Chc nng dn knh c thc hin tng 2 D. Kch thc ca gi tin l 256 bytes

27

Vi k thut Frame Relay th A. Chc nng chn ng c thc hin tng Data Link B. Khun dng tng qut ging nh khun dng ca BSC/Basic Mode C. Chc nng dn knh c thc hin tng Transport D. Kch thc ca gi tin l 128 bytes

28

Vi k thut Frame Relay th khung d liu c di A. C nh B. Thay i C. 256 bytes D. 128 bytes

29

Vi cng ngh ATM th cu no sau y l sai A. T bo ATM c 5 byte Header v 59 byte data B. Thng lng c th t n hng trm Mbps C. Cc t bo ATM c khun dng khc nhau D. Kch thc ca t bo c nh

30

Vi phn Header ca t bo ATM th A. VCI nh danh ng dn o B. PT ch u tin ca t bo C. VPI nh danh knh o D. Kch thc ca t bo c nh

31

Trong Header ca ATM, mt ..?.. hon ton c th xc nh bi s kt hp gia VPI v VCI A. ng dn o B. Knh o C. Lin kt vt l D. Lin kt logic

32

Vi khun dng phn Header ca cc t bo ATM th A. Tham s GFC dng kim sot lung d liu B. Tham s PT ch u tin loi b t bo C. Tham s VCI dng chn ng dn o D. Tham s VPI dng chn knh o

33

Chn pht biu sai v giao thc tng giao vn A. C nhiu loi TPDU B. Khun dng tng qut ca cc TPDU c 3 phn: LI, Header, Data C. Khun dng tng qut ca cc TPDU c 3 phn: Fixed part, Variable part, Data D. Khun dng tng qut ca cc TPDU c 4 phn: LI, Fixed part, Variable part, Data

34

Chn pht biu ng v tng giao vn A. N phi c kh nng thch ng vi mt phm vi rt rng cc c trng ca mng B. N phi bit c yu cu v cht lng dch v ca mng bn di C. N phi bit c kh nng cung cp dch v ca cc tng trn D. Trong m hnh OSI, tng giao vn l tng thp trong nhm cc tng cao

35

Cn c vo cht lng ca tng loi mng v chc nng ca cc lp giao thc, ta phn cc lp giao thc tng ng vi cc loi mng nh sau A. Loi A: lp 0, 1 B. Loi B: lp 1, 3 C. Loi C: lp 0, 1, 2, 3, 4 D. Loi A: lp 1, 2

36 Chn pht biu ng trong cc pht biu sau y A. Giao thc chun tng phin s dng mt loi n v d liu (SPDU: Session Protocol Data Unit)

B. Tng phin khng cung cp cc im ng b ha kim sot vic trao i thng tin C. Giao thc chun tng phin c nhiu loi khun dng tng qut ca SPDU (Session Protocol Data Unit) D. Giao thc chun tng phin s dng nhiu loi n v d liu (SPDU: Session Protocol Data Unit)

37

Chn pht biu ng trong cc pht biu sau y A. n v d liu ca tng vt l l PPDU (Physical Protocol Data Unit) B. PPDU c phn header cha thng tin iu khin C. D liu c truyn i theo dng bt D. D liu c truyn i theo tng khi k t

38

Cn c vo cht lng ca tng loi mng v chc nng ca cc lp giao thc, ta phn cc lp giao thc tng ng vi cc loi mng nh sau A. Loi A: lp 0, 1 B. Loi B: lp 2, 3 C. Loi C: lp 0, 1, 2, 3, 4 D. Loi A: lp 0, 2

Chng 3: MNG CC B

Stt Cu hi v p n

1

Chn pht biu sai v mng cc b A. Qun l khai thc mng han tan tp trung, thng nht B. Hin nay, mng cc b ch dng cu hnh sao C. Mng cc b c tc cao v t li D. Khng cn dng cc thit b dn ng vi cc mi lin h phc tp

2

Cu no sau y khng phi l u im ca mng hnh sao A. Cc thit b hub, repeater, c ch to bng cng ngh tn tin hn, thng xuyn ra i nhng th h sn phm mi B. Vic lp t, bo tr, m rng rt d dng, mng khng b gin on C. S c xy ra trn on cp ca my no th ch c ring my b c lp khi mng, mng vn hot ng bnh thng D. Chi ph thp hn cc kiu khc do gi thnh cc thit b ngy cng h

3

Cng ngh LAN no s dng phng php CSMA/CD A. FDDI B. Ethernet C. Token Ring D. ArcNet

4

Hin nay, mng kiu Bus khng c cc nh thit k mng a chung, nguyn nhn l A. D liu gi i t mt my s truyn i theo c hai chiu, gy nh hng n tc trao i thng tin trong mng B. Khi c s c trn cp th vic khc phc rt kh khn hoc cn m rng th mng phi ngng hot ng C. Chi ph u t ln D. Kt ni rt phc tp

5

i vi mng hnh Bus th A. Khi mt nt mng b s c th ton mng c th b nh hng B. Khi mt ch no trn cp chnh b s c th ton mng ngng hot ng C. Khi mt nt mng b s c th cc trm cn li vn hot ng bnh thng D. Vic khc phc s c rt d dng

6

Chn pht biu khng ng v mng hnh Ring A. Bao gm mt ng trn khng c im u v im cui B. Thng tin trn mng hot ng theo mt chiu xc nh C. Khi qua cc nt, thng tin c khuych i nn khong cch gia 2 nt c th xa nhau D. Th bi dch chuyn tun t trn vng vt l

7

Khi ni v cch kt ni v hot ng ca mng b tr kiu vng th trng hp no sau y l sai A. Cc my tnh ng vai tr nh mt b khuch i tn hiu trc khi gi i tip B. Cc gi tin c gi i km theo mt th bi (Token) C. Cc gi tin trong mng c truyn i theo c hai chiu D. Cc my tnh trong mng c kt ni thnh mt vng khp kn, my cui cng k lin sau my u tin

8

Th bi (Token) l mt n v d liu c bit, c ni dung gm cc thng tin A. V kim sot li v lung d liu B. D liu ca ngi s dng C. iu khin c quy nh ring cho mi phng php D. Bng chn ng

9

Trong phng php truy cp ng truyn Token Bus, vng logic l vng A. Gm cc nt mng c nhu cu gi v nhn thng tin B. Gm cc nt mng c nhu cu gi v khng nhn thng tin C. Gm cc nt mng ch c nhu cu nhn thng tin D. Gm cc nt mng c nhu cu gi thng tin

10

Khng nh no ng khi ni v phng php truy nhp ng truyn c c ch xc nhn ACK A. TOKEN RING B. CSMA/CD C. TOKEN BUS D. CSMA/CA

11

Trong phng php truy cp ng truyn Token Ring, gi tin A. Sau khi n ch s b hu b B. Sau khi n ch s tip tc i v trm ngun C. Sau khi n ch s chuyn trng thi t bn sang ri D. Sau khi n ch s c thm k t ACK

12

Khng nh no ng khi ni v nguyn nhn ph v h thng trong mng Token RING A. Trng a ch B. Th bi bn khng ngng trn vng C. t vng D. Khi to vng logic

13

Trong phng php truy cp ng truyn Token Ring, Token A. Di chuyn trong vng logic B. Di chuyn theo mt th t xc nh trc C. Di chuyn trong vng vt l D. Di chuyn t do trong vng vt l

14 Nhc im ca cc phng php dng th bi A. Trong trng hp ti nh, hiu qu km hn CSMA/CD

B. Khng c kh nng iu ho lu lng trong mng C. Gii hn kch thc ca gi tin D. Quy nh thi gian s dng th bi

15

Tm pht biu sai trong cc pht biu sau y A. Cc mng c dy kt ni vi nhau bng cp xon i, cp ng trc, cp quang, N c th kt ni cc my tnh, tivi to thnh mng B. Cc mng c dy khng c kh nng thc hin cc kt ni mi thi im, mi ni C. Cc mng khng dy kt ni vi nhau bng sng rai, cc bc x hng ngoi hay sng truyn qua v tinh thng qua cc im truy cp khng dy WAP. N c th kt ni cc my tnh, in thoi di ng to thnh mng D. Vng ph sng ca mng khng dy khng b hn ch

16

Vi phng thc s dng gii thng ca ng truyn Baseband th A. Ton b gii thng ca ng truyn c dnh cho mt knh truyn thng duy nht B. Gii thng ca ng truyn c chia thnh nhiu gii tn con (knh), mi gii tn con s cung cp cho mt knh truyn thng C. Vi phng thc ny, tn hiu c truyn i di dng tng t D. Vi phng thc ny, tn hiu c truyn i di dng s bi thit b iu ch

17

Vi phng thc s dng gii thng ca ng truyn Broadband th A. Ton b gii thng ca ng truyn c dnh cho mt knh truyn thng duy nht B. Cc tn hiu a vo ng truyn ch c th truyn i theo mt chiu C. Vi phng thc ny, tn hiu c truyn i di dng tng t D. Vi phng thc ny, tn hiu c truyn i di dng s bi thit b iu ch

18

Tm pht biu sai trong cc pht biu sau y A. Vi phng thc Broadband, tn hiu c th c truyn i di dng tng t hoc s, khng cn thit b iu ch B. Vi phng thc Broadband, cc tn hiu a vo ng truyn c truyn i theo c hai chiu C. Vi phng thc Baseband, tn hiu c th c truyn i di dng tng t hoc s thng qua thit b iu ch D. Vi phng thc Baseband, tn hiu c th c truyn i di dng tng t hoc s, khng cn thit b iu ch