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Cu hi n tp Trc nghim - An ton mng

Cu 1: M t no thch hp cho mng BusA. Cn nhiu cp hn cc cu hnh khc.B. Phng tin r tin v d s dng.C. D sa cha hn cc cu hnh khc.

D. S lng my trn mng khng nh hng n hiu sut mng.Cu 2: Giao thc SMTP s dng cng dch v s:A. 110 C. 25B. 23 D. 53

Email PortsFor networks, a port means an endpoint to a logical connection. The port number identifies what type ofport it is. Here are the default email ports for:

POP3 - port 110

IMAP - port 143

SMTP - port 25

HTTP - port 80

Secure SMTP (SSMTP) - port 465

Secure IMAP (IMAP4-SSL) - port 585

IMAP4 over SSL (IMAPS) - port 993

Secure POP3 (SSL-POP) - port 995

Cu 3: Giao thc POP3 s dng cng dch v s:A. 110 C. 25B. 23 D. 53Cu 5: nh du cc cu ng v cng TCP: (chn cc cu ng)A. ng dng web c cng TCP l 25B. ng dng email (SMTP) c cng TCP l 80C. DNS c cng 53D. ng dng email (POP) c cng 110.Cu 6: kt ni hai HUB vi nhau ta s dng kiu bm cp:A. Thng (straight-through). C. Console.B. Cho (cross-over). D. Tt c u ng.Cu 7: ni Router v my tnh ta phi bm cp kiu no?A. ThngC. Kiu no cng c

B. Cho D. Tt c u saiCu 8: Pht biu no sau y m t ng nht cho cu hnh StarA. Cn t cp hn nhiu so vi cc cu hnh khc.B. Khi HUB x l trung tm b hng th ton b mng ngng hot ng.C. Kh ti lp cu hnh hn so vi cc cu hnh khc.D. D kim sot v qun l tp trung.Cu 9: c im ca mng dng Bus :A. Tt c cc nt mng kt ni vo nt mng trung tm (V d nh Hub)-->StarB. Tt c cc ni kt ni trn cng mt ng truyn vt l.

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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.Cu 10: Trong m hnh mng kiu bus, nu mt my tnh b hng th:A. C mng ngng lm vic.B. Mng vn c th lm vic c, tuy nhin cc truy cp n my b hng l khngth.

C. Lm ng bus b hng.D. Tt c u ng.Cu 11: Trong m hnh mng kiu vng (Ring Model), nu c mt my tnh bhng, cc my tnh cn li khng th truy cp n nhau.A. Pht biu trn ng.B. Pht biu trn saiCu 12: Trong m hnh mng hnh sao (star model), nu hub x l trung tm bhng th:A. Mng khng th tip tc hot ng.B. Mng vn hot ng bnh thng cc nhnh nh.C. Khng sao c, Hub x l trung tm ko c ngha trong m hnh sao.D. Tt c u sai.Cu 13: s thp phn 172 c i sang nh phn l s no sau y:A. 10010010 C. 10101100B. 10011001 D. 10101110Cu 14: Trong Mail Server thng s dng cc giao thc no sau y(chn 2)?A. SNMP C. SMTPB. POP3 D. ICMPCu 15: Dng nh phn ca s 101 l:A. 01100111 C. 11100100B. 01100101 D. 01100011Cu 16: S thp phn 172 c i sang nh phn l s no sau y:A. 10010010 C. 10101100B. 10011001 D. 10101110Cu 17: Dng thp phn ca s 10101001 l:

A. 163 C. 169B. 167 D. 168Cu 18: Dng thp phn ca s 01010110 l:A. 83 C. 85B. 84 D. 86Cu 19: Chn pht biu ng:A. a ch ng l do ngi dng t t.B. a ch tnh l do my ch DHCP cp pht.C. a ch ng l do my ch DHCP cp.D. Tt c u sai.Cu 20: Khi ni mng gia 2 my tnh, chng ta s dng loi cp no nitrc tip gia chng.A. Cp quang C. Cp STP

B. Cp UTP thng D. Cp UTP cho (crossover)Cu 21: Vic nhiu gi tin b ng trn mng s lm cho:A. Hiu qu truyn thng ca mng tng lnB. Hiu qu truyn thng ca mng km iC. Hiu qu truyn thng ca mng khng thay iD. Ph thuc vo cc ng dng mng mi tnh c hiu qu.Cu 22: Pht biu no sau y l ng:A. a ch private l a ch do nh cung cp dch v t v ta khng th thay i n uc.B. a ch private l a ch do ngi dng t t v c th thay i c.

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Cu 23: u im ca h thng th in t l:A. C th gi cho nhiu ngi cng lc, tit kim thi gian v chi ph.B. bo mt cao, c th nhn th in t m khng cn kt ni internet.C. Khng b tht lc, c th gi km nhiu loi ti liu vi dung lng khng hn ch.D. Tt c u ng.Cu 24: a ch IP no nm cng chung subnet vi IP 200.200.200.200, subnet

mask: 255.255.255.240:A. 200.200.200.196 C. 200.200.200.177B. 200.200.200.191 D. 200.200.200.223Cu 25: a ch IP no hp l:A. 172.29.2.0 C. 192.168.134.255B. 172.29.0.2 D. 127.10.1.1

Cu 26: Chc nng chnh ca router l:A. Kt ni network vi network C. A v B u ngB. Chia nh broadcast domain D. A v B u saiCu 27: 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 Data Link ca m hnh OSI.D. S dng a ch IP v hot ng ti tng Network ca m hnh OSI.Cu 28: n v ca bng thng l: (chn cc p n ng)A. Hertz (Hz). C. Bit/second (bps).B. Volt (V). D. Ohm ().Cu 29: Chc nng chnh ca router l:A. Kt ni LAN vi LAN. C. Tt c u ng.B. Chia nh broadcast domain D. Tt c u sai.Cu 30: Thit b no tng mng c th phn mt mng vo nhng broadcastdomain khc nhau?A. Hub C. SwitchB. Bridge D. Router

Cu 31: Kin trc mt mng LAN c th l:A. RING C. STARB. BUS D. C 3 dng trnCu 32: Kin trc mt mng LAN c th l:A. RING C. STARB. BUS D. C th phi hp cc m hnh trnCu 33: Ch k in t lA. L mt chui c m ha theo thut tan bm v nh km vi vn bn gc trc khigi.B. on d liu ngn nh km vi vn bn gc chng thc tc gi ca vn bn v gipngi nhn kim tra tnh ton vn ca ni dung vn bn gc.C. A v B u ngD.Tt c c u sai

Cu 34: kt ni hai my tnh vi nhau ta c th s dng :A. Hub C. Ni cp trc tipB. Switch D. Tt c u ngCu 35: Chui s 00-08-ac-41-5d-9f c th l:A. a ch IP C. a ch MACB. a ch port D. Tt c u saiCu 36: a ch vt l gm bao nhiu bit:A. 48 C. 16B. 8 D. 32

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Cu 37: Ch k in t (digital signature) s dng thut tan no sau yA. RSA,MD5 C. MD5, SHA,RSAB. RSA,MD5, Keboros D.Khng dng thut tan no nu trnCu 38: Giao thc SSL v TLS hot ng tng no ca m hnh OSIA. Network C. TransportB. Sesion D. B v C u ng

Cu 39: Trong m hnh mng khch ch (client server), t server ch:A. My khch. B. Va l my khch, va l my ch.C. My ch. D.My tnh ang kt ni internet.Cu 40: Dch v DNS Server c chc nng chnh l g?A. Phn gii tn min (IP sang tn min v ngc li)B. Phn gii a ch MACC. Phn gii tn netbiosD. Tt c u saiCu 41: cp pht ng a ch IP, ta c th s dng dch v c giao thc no:A. Dng giao thc DHCP C. Dng giao thc DNSB. Dng giao thc FTP D. Dng giao thc HTTPCu 42: Cho bit ng dng no thuc loi Client/Server:A. WWW (world wide web)C. ExcelB. WinWord D. PhotoshopCu 43: a ch IP c lu hnh trong mng di dng:A. Dy s gm 5 trng c phn cch nhau bi du chm (.)B. Dy s gm 4 trng c phn cch nhau bi du chm (.).C. Mt dy s nguyn c phn cch nhau bi du chm (.).D. K t c bit.Cu 44: TCP/IP l:A. Phng tin truyn thng. C. Cch kt ni internet.B. B giao thc truyn thng.D. a ch ca my tnh trn mng.Cu 45: Khi thy tn min trong a ch website c .edu th website thngthuc v:A. Lnh vc chnh ph. C. Lnh vc gio dc.

B. Lnh vc cung cp thng tin. D. Thuc v cc t chc khc.Cu 46: nh du cc cu ng v cc thit b mng (chn cc cu ng):A. Repeater c chc nng ko di cp mng.B. Thit b nh tuyn lm nhim v tm ngC. Thit b bridge hot ng ti tng mng(datalink)D. Thit b switch hot ng ti tng vt l.(datalink)Cu 47: Si cp xon ni gia card mng vi hub th :A. Bm th t 2 u cp ging nhauB. i v tr cc si 1, 2 vi si 3, 6C. Mt u bm theo chun TIA/EIA T-568A, u kia theo chun TIA/EIAT568-BD. Tt c u sai.Cu 48: Cc my tnh kt ni thnh mng my tnh nhm mc tiu:

A. Tng tnh bo mt ca thng tin trn my. C. Gim kh nng chia s d liu.B. Hn ch virus. D. C 3 cu trn u sai.Cu 49: S dng mng my tnh ta s 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, bo mt v backup ttC. S dng cc dch v mng.D. Tt c u ng.Cu 50: a ch no sau y thuc lp A:a. 172.29.14.10 c. 140.8.8.8

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b. 10.1.1.1 d. 203.5.6.7Cu 51: Cng ngh mng LAN s dng ph bin hin nay l:a. Token Ring c. Ethernetb. FDDI d. ADSLCu 52: Hy ch ra a ch IP trong cc a ch sau:A. 250.154.32.10 B. thvt.edu.vn C. D. 172.154.net

Cu 53: Giao thc my tnh nhn ra nhau trong mng internet l g?A. TCP/IP B. HTTP C. SMTP D. FTPCu 53: kt ni Internet, ta c th:A. S dng modem qua ng in thoi.B. S dng ng truyn ADSL hoc cng ngh khng dy.C. S dng ng truyn ring.D. C 3 cch trn u ng.Cu 54: Mng cc b l mng:A. Ca mt gia nh hay ca mt phng ban trong mt c quan.B. Kt ni mt s lng nh my tnh gn nhau.C. Kt ni cc my tnh trong mt phm vi rng ln.D. C t 10 my tr xung.Cu 55: iu g ng i vi mng ngang hng :A. Cung cp s an ton v mc kim sot cao hn mng da trn my phc v.B. c khuyn co s dng cho mng c t 10 ngi dng tr xung.C. i hi mt my phc v trung tm c cu hnh mnh.D. Ngi dng phn b trong a bn rng.Cu 56: Giao thc FTP s dng cng dch v s (chn 2):A. 20 C. 25B. 21 D. 53Cu 57: Nhc im ca mng dng hnh sao l :a. Kh ci t v bo trb. Kh khc phc khi li cp xy ra, v nh hng ti cc nt mng khcc. Cn qu nhiu cp kt ni ti nt mng trung tmd. Khng c kh nng thay i khi lp t

Cu 58: K thut dng ni kt nhiu my tnh vi nhau trong phm vi mt vnphng gi l:A. LAN C. MANB. WAN D. InternetCu 59: Cho bit cu no ng trong cc cu sauA. Tt c Firewall u c chung thuc tnh l cho php phn bit hay i x kh nng tchi hay truy nhp da vo a ch ngunB. Chc nng chnh ca Firewall l kim sat lung thng tin gia mng cn bo v vInternet thng qua cc chnh sch truy nhp c thit lpC. H thng Firewall thng bao gm c phn cng ln phn mmD. Tt c u ngCu 60: Ni dung ca mt gi tin trong mng khng bao gm thnh phn no sauy?

A. Thng tin kim sot li.B. Danh sch cc my truyn tin trung gian.C. a ch gi, a ch nhn.D. D liu.Cu 61: Cc my tnh trong mng Internet phi c a ch v:A. bit tng s cc my tnh trn Internet.B. xc nh duy nht my tnh trn mng v gi tin khi gi n ng mynhn.C. tng tc tm kim.

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D. chia cc gi tin d dng.Cu 62: Trang thit b mng no dng ni cc mng v kim sot cbroadcast ?A. Hub C. Ethernet switchB. Bridge D. RouterCu 63: nh du cc cu ng v a ch IP (chn cc cu ng):

A. a ch IP 101.10.10.1 thuc lp BB. a ch IP 192.168.1.254 thuc lp CC. a ch IP 129.1.1.5 thuc lp AE. a ch IP 10.0.0.1 thuc lp ACu 64: Chn nh ngha NG v a ch MAC:A. c ghi sn trn card mng (NIC) C. Cu A v B ngB. Do ngi qun tr mng khai bo D. Tt c u ngCu 65: My tnh no di y m nhn vic qun l v cung cp ti nguyn:A. My trm v my khch. C. Server (my ch).B. Client (my khch). D. Workstation (my trm).Cu 66: a ch no c SWITCH s dng khi quyt nh gi data sang cng(port) no ?A. Source MAC address. C. Network address.B. Destination MAC address. D. Subnetwork address.Cu 70: Nu 4 PCs kt ni vi nhau thng qua HUB th cn bao nhiu a ch IP cho5 trang thit b ny ?A. 2 C. 4B. 3 D. 5Cu 71: di ti a cho php khi s dng dy cp mng UTP l bao nhiu mt ?A. 100 C. 200B. 185 D. 500Cu 72: Cp UTP c s dng vi u ni l:A. RJ45 C. C haiB. BNC D. Cc cu trn u saiCu 73: Cp quang c th kt ni ti a bao nhiu mt ?

A. 1000 C. ln hn 1000B. 2000 D. tt c u saiCu 74: Chc nng chnh ca Virus lA. Ly nhim v sinh snC. T pht trin c lp v ly nhimB. Sng k sinh v ly nhim D. Tt c u ngCu 75: Phn no trong a ch IP c Router s dng khi tm ng i?A. Host address C. Router address (a ch router)B. Network address (a ch mng) D. FDDICu 76: S lng bit nhiu nht c th mn chia subnets ca a ch IP lp C lbao nhiu?A. 2 C. 6B. 4 D. 8Cu 77: a ch 139.219.255.255 l a ch g?

A. Broadcast lp A C. Broadcast lp CB. Broadcast lp B D. Host lp BCu 78: Thit b mng trung tm dng kt ni cc my tnh trong mng hnhsao l ?A. Switch/HubC. RepeaterB. Router D. NICCu 79: Card mng c coi nh l thit b tng no trong m hnh OSI:A. Physical C. NetworkB. Data Link D. Transport

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Cu 80: Lnh no di y c dng xc nh ng truyn (trong h iuhnh Windows)A. nslookup C. routeB. ipconfig D. tracertCu 81: Gi s my A c a ch 172.29.14.1/24 v my B c a ch172.29.14.100/24. Ti my A, kim tra xem c th kt ni n my B c hay

khng, ta dng lnh no:A. Ping 172.29.14.1. C. Ipconfig 172.29.14.100.B. Ping 172.29.14.100. D. Tt c u sai.Cu 82: C ch bo mt SSL hot ng trn tngA.Network, Transport C.Application, SessionB.Network, SessionD.Tt c u saiCu 83: Mng Internet l s pht trin ca:A. Cc h thng mng LAN. C. Cc h thng mng Intranet.B. Cc h thng mng WAN. D. C ba cu u ng.Cu 84: Thit b mng no sau y l khng th thiu c trong mng Internet(l thnh phn c bn to nn mng Internet)A. Hub C. RouterB. Switch D. BridgeCu 85: 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.Cu 86: Lnh no sau y cho bit a ch IP ca my tnhA. IP C. FTPB. TCP_IP D. IPCONFIGCu 87: Trong mng my tnh dng giao thc TCP/IP v u dng subnet mask l255.255.255.0 th cp my tnh no sau y lin thngA. 192.168.1.3 v 192.168.100.1B. 192.168.15.1 v 192.168.15.254

C. 192.168.100.15 v 192.186.100.16D. 172.25.11.1 v 172.26.11.2Cu 88: a ch no l a ch broadcast trong subnet 200.200.200.176, subnetmask: 255.255.255.240:A. 200.200.200.192 C. 200.200.200.177B. 200.200.200.191 D. 200.200.200.223Cu 89: Trong cc a ch sau, chn a ch khng nm cng ng mng vi cca ch cn li:a. 203.29.100.100/255.255.255.240 c. 203.29.103.113/255.255.255.240b. 203.29.100.110/255.255.255.240 d. 203.29.100.98/255.255.255.240Cu 90: a ch IP 192.168.1.1:a. Thuc lp B c. L a ch ringb. Thuc lp C d. b v c ng

Cu 91: Giao thc SSL dng a. Cung cp bo mt cho d liu lu thng trn dch v HTTPb. Cung cp bo mt cho th in tc. Cung cp bo mt cho Webd. Cung cp bo mt cho xc thc ngi dng vo cc h thng vn hnh trn FlatformWindowCu 92: Cng c/c ch bo mt cho mng khng dy lA. SSL C. Giao thc PGPB. TSL D. WEP

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Cu 93: K thut tn cng ph bin trn Web lA. Chim hu phin lm vic. C. T chi dch v (DoS)B. Trn b m. D. Chn cu truy vn SQL.Cu 94: Mi trng truyn tin thng thng trong mng my tnh l:A. Cc loi cp nh: ng trc, xon i, Cp quang, cp in thoi,...B. Sng in t,...

C. Tt c mi trng nu trnCu 95: Loi Firewall no sau y cho php hot ng lp phin ( session) cam hnh OSIa. Packet filtering firewallb. Circuit level firewallc. Application level firewalld. Stateful multilayer inspection firewallCu 96: Trong mng my tnh dng giao thc TCP/IP v Subnet Mask l255.255.255.224 hy xc nh a ch broadcast ca mng nu bit rng mt mytnh trong mng c a ch 192.168.1.1A. 192.168.1.31 C. 192.168.1.15B. 192.168.1.255 D. 192.168.1.96Cu 97: Gi s h thng mng ca bn phi chia thnh 8 mng con (subnet) v sdng mt a ch lp B. Mi mng con cha t nht 2500 host. Vy subnet maskno s c s dng:A. 255.248.0.0 C. 255.255.224.0B. 255.255.240.0 D. 255.255.252.0Cu 98: Ch k in t (digital signature) s dng thut tan no sau ya. RSA,MD5 c. MD5, SHA,RSAb. RSA,MD5, Keboros d.Khng dng thut tan no nu trnCu 99: Xt cc a ch sau:a. 00001010.01111000.11111001.01101101b. 10000001.01111000.00000011.00001001c. 11000000.10101000.00000001.11111110chn pht biu ng:

A. a ch cu a l a ch publicB. a ch cu b l a ch private.C. a ch cu c l a ch private.Cu 100: a ch IP no sau y t c cho PC:A. 192.168.0.0 / 255.255.255.0B. 192.168.0.255 / 255.255.255.0C. 192.168.1.0 / 255.255.255.0D. 192168.1.255 / 255.255.255.0E. 192.168.1.2 / 255.255.255.0Cu 101: 7 tng ca m hnh OSI ln lt l:A. Physical Layer - Datalink Layer - Network Layer - Transport Layer - Session Layer -Presentation Layer- Application LayerB. Application Layer - Presentation Layer - Session Layer - Transport Layer - Network Layer

- Datalink Layer - Physical LayerC. C hai A v B u sai.D. C hai A v B u ng.Cu 1.Yu cu m bo s dng m ha i xng la. C thut tan encryption tt,c mt kha b mt c bit bi ngi nhn/giv knh truyn b mt phn pht keyb.C mt knh truyn ph hp v mt kha b mt c bit bi ngi nhn/gic.C thut tan encryption tt v c mt kha b mt c bit bi ngi nhn/gi

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d.Tt c u ng

Cu 2.Cc thut tan no sau y l thut tan m ha i xnga. Triple DES, RC4, RC5, Blowfishb.Triple DES, RC4, RC5, IDEA

c.RC4, RC5, IDEA, Blowfishd.IDEA, Blowfish, AES, Elliptic Cure

Cu 3.Cc pht biu sau y pht biu no nga. Hu ht cc thut tan m ha i xng u da trn cu trc thut tan Feistelb.Tn cng thng ip th thi gian gii m t l vi kch thc khac.Hu ht cc thut tan m ha khi u i xngd .Tt c u ng

Cu 4.C ch bo mt SSL hot ng trn tngA .Network, Transport

b. Network, Sessionc .Application, Sessiond .Tt c u sai

Cu 5.Keberos l dch v y thca. Xc thc trn Webb. Xc thc X.509c. Xc thc trn Serverd. Xc thc trn cc my trm vi nhau

Cu 6. PGP l giao thc xc thc

a. Quyn ng cp vo h thng my ch Windowb. Bo mt cho th in tc. Thc hin m ha thng ip theo thut tan RSAd. a ch ca my trm khi kt ni vo Internet

Cu 7. Cng c/c ch bo mt cho mng khng dy la. SSLb. TSLc. Giao thc PGPd. WEP

8. Giao th SSL v TSL hot ng tng no ca m hnh OSIa. Networkb. Sesionc. Transportd. T tng Trasport tr ln

Cu9. Giao thc SSL dng a. Cung cp bo mt cho d liu lu thng trn dch v HTTP

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b. Cung cp bo mt cho th in tc. Cung cp bo mt cho Webd. Cung cp bo mt cho xc thc ngi dng vo cc h thng vn hnh trn FlatformWindow

Cu 10.Chc nng chnh ca Virus la. Ly nhim v sinh snb. Sng k sinh v ly nhimc. T pht trin c lp v ly nhimd. Tt c u ng

Cu 11.Hot ng ca virus c 4 giai ona. Nm im, ly nhim, tn ph v t hyb. Ly nhim, tn cng, hy dit v t hyc. Nm im, ly nhim, khi s v tn phd. Ly nhim, khi s, tn pht, kch hat li

Cu 12.Cc dng sau y, dng no l ca virusa.sealth, c tr b nh, macro, a hnh, fileb.stealth, c tr b nh, macro, lng tnh, filec.virus k sinh, file, boot secctor, stealth, c tr b nh, macrod. virus k sinh, c tr b nh, boot secctor, Stealth, a hnh, macro

Cu 13. Virus Macro ch c kh nng tn cng vo cc filea. MS.Exel, MX Word, MS.Outlook Mailb. MS.Exel, MX Word, MS.Power Pointc. MS.Exel, MX Word,Yahoo Mail

d.Tt c cc loi file

Cu14. Cc giao thc bo mt trn Internet nh SSL, TLS v SSH hot ng tngno trn m hnh OSIa.Tng Networkb.Tng Transportc. T tng Transport tr ln n tng 7d.Tng Session

cu 15. K thut tn cng ph bin trn Web la. Chim hu phin lm vic.

b.Trn b m.c. T chi dch v (DoS)d.Chn cu truy vn SQL.

Cu 16. Cc l hng bo mt trn h thng l doa. Dch v cung cpb. Bn thn h iu hnhc. Con ngi to ra

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d. Tt c u ng

cu 17. Cho bit cu no ng trong cc cu saua. Tt c Firewall u c chung thuc tnh l cho php phn bit hay i x kh nng t chihay truy nhp da vo a ch ngun

b. Chc nng chnh ca Firewall l kim sat lung thng tin gia mng cn bo v vInternet thng qua cc chnh sch truy nhp c thit lpc. H thng Firewall thng bao gm c phn cng ln phn mmd. Tt c u ng

Cu 18. Loi Firewall no sau y cho php hot ng lp phin ( session) cam hnh OSIa. Packet filtering firewallb. Circuit level firewallc. Application level firewalld. Stateful multilayer inspection firewall

Cu 19.Nhng giao thc WAN no c th c nh hnh trn mt kt ni tun tkhng ng b (Chn 2)a. PPPb. ATMc. HDLCd. SDLC

Cu 20. Khi thu mt gii php VPN, nhng loi tn cng no bn cn phi xtn ?a. Denial of Service (DoS) attacks, Internet Viruses..

b. Distributed Denial of Service (DDoS) attacks.c. Data confidentiality, IP Spoofing.d. Network mapping, Internet Viruses.

Cu 22. Bo mt th in t l nhm m boa. Tnh tin cn (confidentiality), Tnh xc nhn, Ton vn thng ip (integrity), Sthi thc ban u (non-repudiation of origin)b. Tnh xc nhn,Ton vn thng ip(integrity), S thi thc ban u (non-repudiation oforigin), tnh bn vngc.S thi thc ban u (non-repudiation of origin), tnh bn vng, tnh n khi gi v nhnd.Tt c u ng

Cu 23. Cc giao thc c bo mt th in t la. GPG, S/MINEb.SHA-1, S/MINEc.CAST-128 / IDEA/3DESd. Keboros, X.509

Cu24. Ch k in t (digital signature) s dng thut tan no sau y

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c.MD5d.SHA

Cu 29. thc hin tn cng bng Trojan, k tn cng ch cna.To 1 file chy (*.exe, *.com) vn hnh trn my nn nhn l

b. Cho my nn nhn ly nhim mt loi virus bt k no .c. Thc hin ng thi 2 file, mt file vn hnh trn my nn nhn, file cn li hatng iu khin trn my k tn cng.d. Khng c iu no ng.

Cu 30. Giao thc bo mt IPSec hat ng tnga. Ch tng transport m hnh OSIb.T tng 4 ti tng 7 m hnh OSIc. Network Layer m hnh OSId.Tt c u sai

Cu31. Cho bit pht biu sau y pht biu no l ng nht v registrya. Registry l mt c s d liu dng lu tr thng tin v nhng s thay i,nhng la chn, nhng thit lp t ngi s dng Windows.b.Regstry l mt phn mm tin ch h tr cho ngi dng thay ii cu hnh Window khicn thitc. Regstry l mt thnh phn ca h iu hnh Windowd. Tt c u ng

Cu 32.C bao nhiu kiu d liu trong Registrya. 5 b. 4 c. 6 d. 7

Cu 33. Cc kiu d liu dng trong registry la.interger, real,text,stringb.HKEY_CLASSES_ROOT, -USER, HKEY_LOCAL_MACHINE, HKEY_USERS,HKEY_CURRENT_CONFIG, HKEY_DYN_DATAc.HKEY_CLASSES_ROOT, -USER, HKEY_LOCAL_MACHINE, REG_BINARYd. REG_BINARY, REG_DWORD, REG_EXPAND_SZ, REG_MULTI_SZ, REG_SZ

Cu34. n tt c cc a trong registry (A,B,C,D) th bin REG_DWORD trongUserkey v Systemkey c gi tr l bao nhiua. 65656000b. 67188270c. 67108863d .Tt c u sai

Cu 35. s dng xc thc Keberos V5 tt c my trm Window98, ngi tathc hin :a. Update window 98 ln XP hoc Window 2000b. Ci t tin ch Distributed Security Client trn tt c cc my chy Window 98c. Ch cn ci t Active Directory trn Server h thng

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d. Khng th thc hin c

Cu 36. Khi ci t Window 2000 Server trn h thng NTFS, nhng khng thy chin th mc Security Security tables v ?a. Update Window 2000 m khng remote trc khi ci t

b. Ci t Window 2000 nhiu ln trn Serverc. Bn Window 2000 khng c bn quynd. Tt c u ng

Cu 37. Dch v Active Directory thc hin cc chc nng saua. T chc v xy dng cc domain; xc thc v cp quyn cho cc i tngb. Duy cc hot ng ca cc dch v bo mt cho Window Server v xc thc, cp quyncho cc i tngc. Ch thc hin vic xc thc v cp cc quyn cho users v groupsd. Qun l ti nguyn v ngi dng; xc thc v cp cc quyn cho users vgroups; gim st hat ng ca cc user

Cu 38. Thut tan thc hin trong c ch bo mt IP (IP Sec) Window s dngla. MD5 v SHA1b. Kerberos v DESc. DES hoc 3DES (triple DES).d.Tt c u sai

cu 39. Trong Window 98,XP Registry c lu tr u ?a.c lu trong file Classes.dat trong th mc Windowsb.c lu trong th mc "Windows\ System32\ Config

c. Trong 2 file: user.dat v system.dat trong th mc Windowsd.Tt c u sai

Cu 40. thc hin sa i cu hnh trn registry ta thc hin nh sau:a. G regedit vo ca s Runb. Bm Ctrl+ Esc+ r ri bm Enterc. a v b ngd.Tt c u sai

Cu 41.Quy trnh crack mt sn phm phn mm n gin gm my bca. 3 c.5

b.4 d. 3 hoc 4

Cu 42. Hai giao thc s dng trong IPSec (IPSec Protocol) gma.IP Authentication Header, TCP/IPb.TCP/IP, IP Encapsulating Security Payloadc. IP Authentication Header, IP Encapsulating Security Payloadd.Tt c u ng

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Cu 43. Cc im khc nhau c bn gia dch v X.509 v Kerberos la. Da trn m ha i xngb. c s dng trong dch v mailc. Xc thc nhiu chiu

d. Tt c u ng

Cu 44. Cc chc nng c bn ca k thut tn cng Sniffera. T ng chp cc tn ngi s dng (Username) v mt khu khng c m ho,Chuyn i d liu trn ng truyn, phn tch nhng li ang mc phi trn h thng lulng ca mng.b. Bt gi tin trn ng truyn, phn tch li v gii m gi tinc. Bt gi tin trn ng truyn, m ha vag gii m d liud.Tt c u ng(T sa)

Cu 45. Cc bc tn cng ca Web Server theo trnh t sau :a. Thm d, Scan, Ginh quyn truy cp, Duy tr truy cp, Xa vtb. Scan, Thm d, Ginh quyn truy cp, Duy tr truy cp, Xa vtc. Thm d, Scan, Duy tr truy cp, Ginh quyn truy cp, Xa vtd. Ginh quyn truy cp, Duy tr truy cp, Scan, Thm d

Cu 46. Hin tng ny do loi chng trnh nguy him no gy ra : Lm mt mts file, lm phn mnh a, gy tc hi vo nhng ngy, thng c bit v.va. Virrus,Zombie c. Logicbomb, Virusb. Worm, Virus d.Trapdoors, TrojanCu 47. nh gi im mnh ca h thng IDS ngi ta da vo cc yu t sau :

a. Khi s, Cch thc hin, biu hin m n ghi nhnb. Khi s, gim st v tr, nhng c trng ghp ni hoc tch hpc. Cch thc hin, biu hin m n ghi nhn, nhng c trng ghp ni hoc tch hpd. Tt c u ng

Cu 48. Hai c ch chnh ca h thng IDS Trigger pht hin khi c mt k xmnhp tn cng mng l :A .Pht hin biu hin khng bnh thng, pht hin s dng khng ngb.Pht hin hin tng trng lp, pht hin khng bnh thngc. Pht hin thay i, pht hin s dng bt bnh thng

d.Tt c u ng

Cu 49.Mc tiu l phn tch mt m l g?a. xc nh th mnh ca cc thut ton mtb. tng cng chc nng thay th trong mt thut ton mt mc. gim chc nng transposition trong mt thut ton mt md. xc nh hon v s dng(T sa)

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Cu 50. iu g s xy ra khi mt thng bo c sa i?a. Kho cng cng c thay ib. Cha kha c nhn c thay ic. Thng ip s c thay i

d.Tin nhn c m ha ng cchCu 51.M ha no sau y l mt tiu chun dng pht trin cho vic to rathng ip an ton?a. Data Encryption Standardb. Digital Signature Standardc. Secure Hash Algorithmd. Ch k d liu tiu chun

Cu 52.Nu k tn cng ly trm mt mt khu c cha mt chiu mt khu mt m, loi tn cng, c s thc hin tm mt khu mt m?a. Tn cng Man-in-the-middleb. Tn cng Birthdayc. Tn cng Denial of Serviced. Tn cng Dictionary

Cu 53.Li th ca RSA l g so vi DSS?a. N c th cung cp cho ch k s v m ha cc chc nngb.N s dng ngun ti nguyn t hn v m ha nhanh hn bi v n s dng cc phm ixngc.N l mt thut ton mt m khi so vi mt thut ton mt m dngd.N s dng mt ln m ha pad

Cu 54.Nhng g c s dng to ra mt ch k in t?a. Kha ring ca ngi nhnb. Kha cng khai ca ngi gic. Kha ring ca ngi gid. Kha cng khai ca ngi nhn

Cu 55. Phng thc no sau y l tt nht m t mt ch k in t?a. Mt phng thc chuyn giao mt ch k vit tay vo mt ti liu in tb. Mt phng php m ha thng tin b mtc. Mt phng php cung cp mt ch k in t v m had. Mt phng php cho nhng ngi nhn ca tin nhn chng minh ngun gcv s ton vn ca mt tin nhn

Cu 56. S dng nhiu bit vi DES c hiu qu?a.56 c.32b.64 d.16Cu 57.Cc yu t nh hng n qu trnh m haa. Thut ton m ha, gii m, v tnh an ton ca knh truyn

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b. Thi gian thc hin m ha v gii mc. Thc hin m ha khi, m rng s bt x ld. Tt c u sai

Cu 58. i vi Firewall lc gi, hnh thc tn cng no sau y c thc hin

a. Nhi a ch IP, tn cng gia, tn cng binb. Nhi a ch IP, tn cng ng i ngun, tn cng tng mu nhc. Nhi a ch IP, tn cng vt firewall,tn cng tng mu nhd. Nhi a ch IP, tn cng vt firewall, tn cng ng i ngun

Cu 59.Ai l ngi tham gia vo vic pht trin u tin h thng m ha khacng?a. Adi Shamirb. Ross Andersonc. Bruce Schneierd. Martin Hellman

Cu 60. DES l vit tt ca t no ?a. Data encryption systemb. Data encryption standardc. Data encoding standardd. Data encryption signature

Cu 61. Cc pht biu sau y, pht biu no tt nht m t mt hacker m trng?A. Chuyn gia bo mtB. Cu Hacker m enC. Cu Hacker m xm

D. Hacker him c

Cu 62. Giai on u ca hacking l g?A. Duy tr truy cpB. Gaining truy cpC. Trinh stD. D tm (Scanning)

Cu 63. Khi mt hacker c gng tn cng mt my ch qua Internet n c gi lloi tn cng?A. Tn cng t xa

B. Tn cng truy cp vt lC. Truy cp a phngD. Tn cng tn cng ni

Cu 64. Cng c no sau y ng l mt cng c thc hin footprinting khngb pht hin?A. Whois searchB. Traceroute

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C. Ping sweepD. Host scanning

Cu 65. Bc tip theo s c thc hin sau khi footprinting l g?A. Scanning

B. EnumerationC. System hackingD. Active information gathering

Cu 66. Footprinting l g?A. o du vt ca mt hacker c o cB. tch lu d liu bng cch thu thp thng tin v mt mc tiuC. qut mt mng li mc tiu pht hin h iu hnh cc loiD. s b tr vt l ca mt mng ca mc tiu

cu 67. L do tt nht thc hin mt chnh sch bo mt l g?

A. Tng an ninh.B. N lm cho kh hn vic thi hnh bo mt.C. Hn ch quyn hn ca nhn vinD. Lm gim an ninh.

cu 68. FTP s dng cng g ?A. 21B. 25C. 23D. 80

Cu 69. Cng no c HTTPS s dng?A. 443B. 80C. 53D. 21

Cu 70. Trojan Horse l g?A. mt chng trnh c hi m ly cp tn ngi dng v mt khu ca bnB. gy hi nh m gi mo hoc thay th m hp phpC. Mt ngi s dng tri php nhng ngi thu truy cp vo c s d liu ngi dng cabn v cho bit thm mnh nh mt ngi s dng

D. Mt my ch l phi hy sinh cho tt c cc hacking n lc ng nhp v gim stcc hot ng hacking

Cu 71. John mun ci t mt ng dng mi vo my ch ca Windows 2000.ng mun m bo rng cc ng dng bt k ng s dng cha c ci Trojan.ng c th lm g gip m bo iu ny?A. So snh ch k MD5 ca tp tin vi mt trong nhng cng b trn cc phngtin truyn thng phn tn

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B. Xin cc ng dng thng qua SSLC. So snh ch k virus ca file vi mt trong nhng cng b trn cc phng tin truynthngD. Ci t cc ng dng t a CD-ROM

Cu 72. Hu ht cc li SQL Injection u l do (chn 2 phng n)a. cu lnh SQL saib. trnh duyt Web khng h trc. User lm cho cu lnh SQL said. S dng H qun tr CSDL khng c bn quyn

Cu73. Chnh sch bo mt la. C ch mc nh ca h iu hnhb. phng thc xc nh cc hnh vi ph hp ca cc i tng tng tc vi h thngc. cc tp lut c xy dng nhm bo v cc tn cng bt hp php t bn ngoid. Tt c u ng

Cu 74. Cc loi mc tiu ca chin tranh thng tina. Website, E-commerce serverb. Internet Relay Chat (IRC), Domain Name System (DNS)c. ISP, Email serverd. Tt c u ng

Cu 75. Khi thc hin trin khai HIDS kh khn gp la. Chi ph lp t cao, kh bo qun v duy trb. Gii hn tm nhn mng, phi x l vi nhiu h iu hnh khc trn mng.c. Thng xuyn phi cp nht bng v li

d. Thng xuyn ci t li phi khi h thng mng thay i h iu hnh