GB0-Huawei

8/11/2019 GB0-Huawei

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HuaWei GB0-183

HuaWei-3Com Certificated Network Engineer

Q&A v 3.2

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1. Frame Relay adopts ( ) as the switching method.

A.Routing

B.Circuit switching

C.Fast switching

D.Packet switching

Answer: d

2. A network protocol is a set of rules and conventions that prescribe how network devices inter-communicate.

The communication parties shall understand and abide the protocol. ( )

T.True

F.False

Answer: t

3. Which layer of the OSI reference model implements encryption. ( )

A.Physical layer

B.Transport layer

C.Session layer

D.Presentation layer

Answer: d

4. Both the transport layer and the data link layer perform error check. ( )

T.True

F.False

Answer: t

5. Common routing protocols are ( ).

A.IPX


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B.OSPF

C.RIP

D.IP

Answer: bc

6. To test the gateways that a packet will pass through from the source host to the destination, use the command ( )

in the H3C COMWARE command line.

A.ping

B.tracert

C.show path

D.display path

Answer: b

7. What algorithm is adopted in PPP CHAP authentication? ( )

A.MD5

B.DES

C.RSA

D.SHA

Answer: a

8. Two routers are in back-to-back connection with the following configuration. Can they communicate with each

other? ( )

[Router1] display current-configuration

#

sysname Router1

#

FTP server enable

#


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l2tp domain suffix-separator @

#

radius scheme system

#

domain system

#

local-user admin

password cipher .]@USE=B,53Q=^Q`MAF4


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#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#

user-interface con 0

user-interface aux 0

user-interface vty 0 4

authentication-mode none

user privilege level 3

#

return

A.Yes

B.No

C.No decision can be made, for there is not enough information.

Answer: b

9. If the user data exceeds the Bc (committed burst ) in a frame relay network, the exceeding data will be dropped.

( )

T.True

F.False

Answer: f

10. Two routers are in back-to-back connection with the following configuration. Can they communicate with

each other? ( )

[Router1]display current-configuration

#

sysname Router1

#

FTP server enable


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#


#

fr switching

#


#

domain system

#

local-user admin



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#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Ethernet0/0

ip address dhcp-alloc

#



#

interface Serial0/0

clock DTECLK1

link-protocol fr

#

interface Serial0/0.1 p2p

fr dlci 20

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a

11. The command to save the current configuration on the H3C router COMWARE 3.4 is ( ).

A.write


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B.save

C.copy

D.reset

Answer: b

12. The H3C AR routers can be upgraded in different ways. Which of the following is not supported? ( )

A.Xmodem

B.FTP

C.TFTP

D.HGMP

Answer: d

13. Which of the following is right about OSPF? ( )

A.It is fast in convergence.

B.It is loop-free, and supports variable-length subnet mask.

C.It supports equal-cost multipath and area division.

D.It supports authentication, and the protocol packets sending with multicast.

Answer: abcd

14. RIP adopts ( ) as the transport protocol with the port number 520.

A.TCP

B.UDP

C.IP

D.PPP

Answer: b

15. The types of ACLs are identified with numbers. The range 4000-4999 refers to the ( ).


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A.Interface-based ACL

B.Basic ACL

C.Advanced ACL

D.MAC-based ACL

Answer: d

16. The TFTP port number is ( ).

A.TCP port 68

B.UDP port 68

C.TCP port 69

D.UDP port 69

Answer: d

17. DCC can carry IP or IPX independently, or carry them at the same time. ( )

T.True

F.False

Answer: t

18. Which of the following is a correct description of IP address? ( )

A.Each IP address contains the network address and the host address.

B.The minimum IPv4 address is 0.0.0.0, and the maximum is 255.255.255.255.

C.32-bit binary address is used.

D.The IP address mask and the IP address perform Boolean AND operation. The bits with the result value 0 are

the host bits.

Answer: abc

19. Which of the following is a correct description of subnet mask? ( )


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A.There are two ways to express the subnet mask. One of them uses mask length.

B.It decides which part of the IP address identifies the network, and which part identifies the host.

C.The address mask of Class A addresses is 255.255.0.0.

D.None of the above is right.

Answer: ab

20. Which of the following is an application layer protocol that uses port number 25? ( )

A.FTP

B.TFTP

C.Telnet

D.SMTP

Answer: d

21. In case of congestion on the intermediate equipment, TCP can use the sliding window technology for flow

control. ( )

T.True

F.False

Answer: f

22. Which of the following can be contained in ISDN functional group? ( )

A.Network termination 1 (NT1)

B.Network termination 2 (NT2)

C.Terminal equipment type 1 (TE1)

D.Terminal equipment type 2 (TE2)

E.Terminal adaptor (TA)

Answer: abcde


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23. By default, the delay to switch from using the active interface to using the standby interface is ( ) seconds.

A.0

B.10

C.30

D.A polling period

Answer: a

24. Configure on the router with command standby threshold 50 20. If the bandwidth of the link is 100Mbps, and

the traffic on the active interface is 80Mbps, the system will ( ).

A.Enable the backup interface with higher priority

B.Not enable the backup interface

C.Shutdown the backup interface

D.Shutdown the backup interface permanently

Answer: a

25. Which of the following is right? ( )

A.The IP address whose network address bits are all ones is a broadcast address.

B.The IP address whose network address bits are all zeros means the whole network.

C.The IP address whose network address is 127 is a loopback address.

D.The IP address whose host address bits are all ones means the whole network.

Answer: c

26. LAN consist of ( ).

A.Ethernet

B.Token ring

C.Token bus

D.FDDI

Answer: abcd


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27. CE1 can be divided into 31 logical channels of 64Kbps, with one channel used for synchronization and the

other 30 used for data transmission. ( )

T.True

F.False

Answer: f

28. The length of 802.3 frame varies from 64 bytes to 1518 bytes. In case of 64 bytes, the length of user data is ( ).

A.46 bytes

B.46 bits

C.2408 bits

D.512 bits

Answer: a

29. Xerox Ethernet is very successful. Xerox drafts a 100 Mbps Ethernet standard together with DEC and Intel.

This standard is called DIX, which is the basis of IEEE802.3. ( )

T.True

F.False

Answer: f

30. Which of the following is right about STP? ( )

A.STP is defined in IEEE 802.1D.

B.STP eliminates possible loops through blocking redundant links in the network.

C.The STP algorithm is implemented between STP bridges through transmitting a special message (BPDU).

D.In case of active link failures, STP can resume the blocked redundant link to ensure uninterrupted service.

Answer: abcd


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31. The typical logical topology of Ethernet is ( )

A.Star

B.Bus

C.Ring

D.Mesh

Answer: b

32. The main function of a network is to ( )

A.Expand storage capacity

B.Improve calculation speed

C.Transmit files

D.Share resources

Answer: d

33. The dominating standard of LAN is ( ).

A.IEEE 802.1X

B.IEEE 802.1Q

C.IEEE 802.X

D.TCP/IP

Answer: c

34. The rudiment of todays Internet is ( )

A.IBM SNA

B.TELENET

C.ARPANET

D.CYBERNET

Answer: c


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35. ( ) puts forward the OSI reference model.

A.IEEE

B.ISO

C.ANSI

D.IETF

Answer: b

36. Which of the following functions can a computer network provide? ( )

A.Resource sharing

B.Information transmission and centralized processing

C.Load balancing and distributed processing

D.Integrated information services

Answer: abcd

37. Common cables for LANs include ( ).

A.Optical fiber

B.Twisted-pair cable

C.V.35 cable

D.Coaxial cable

Answer: abd

38. The main parameters of a network interface card include ( ).

A.Bandwidth

B.Delay

C.Bus mode

D.Electrical interface mode


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Answer: acd

39. What functions can an Ethernet switch provide? ( )

A.Data filtering

B.Network segmentation

C.Broadcast control

D.Access control

Answer: abcd

40. A WAN can adopt ( ) as the switching technology.

A.Circuit switching

B.Storage switching

C.Packet switching

D.Fast switching

Answer: ac

41. Common network topologies include ( ).

A.Bus

B.Star

C.Tree

D.Ring

E.Full-mesh

Answer: abcde

42. Two main parameters for network performance evaluation are ( ).

A.Scope

B.Bandwidth


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C.Delivery protocols

D.Delay

Answer: bd

43. Network delay includes ( )

A.Transmission delay

B.Media access delay

C.Exchange delay

D.Queue delay

Answer: abcd

44. Which of the following describes WAN correctly? ( )

A.It runs over a wide geographic area.

B.The network control shall comply with public service rules.

C.Normally access through low-speed serial links is adopted.

D.It provides full-time or part-time connections.

Answer: abcd

45. Modems can work in synchronous or asynchronous mode, which are connected to the synchronous or

asynchronous serial port of a router. Which of the following WAN connections can a synchronous modem be used

in? ( )

A.Lease line

B.Frame Relay

C.PSTN

D.X.25

Answer: abd


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46. Which of the following is the WAN technology? ( )

A.ISDN

B.WLAN

C.PSTN

D.ATM

Answer: acd

47. Which description is wrong about Frame Relay? ( )

A.It is developed on the basis of X.25.

B.It allows certain burst traffic for users in data transmission.

C.It adopts point-to-point topology.

D.Its rate ranges from 256 Kbps to 2.048 Mbps.

Answer: cd

48. A device can communicate with other network devices even if it does not support TCP/IP. ( )

T.True

F.False

Answer: t

49. The leading LAN standard is put forward by the International Organization for Standardization (ISO). ( )

T.True

F.False

Answer: f

50. Routers are used for network interconnection. They provide addressing and packet forwarding for different

networks. ( )

T.True


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F.False

Answer: t

51. The two channels of ISDN BRI can not work for two applications independently. ( )

T.True

F.False

Answer: f

52. The features of LAN are ( ).

A.Short distance

B.Low delay

C.High speed

D.Provision of data communication services in a wide area

Answer: abc

53. Which of the following is a standard for the Wireless LAN (WLAN) ? ( )

A.802.3

B.802.4

C.802.5

D.802.11

Answer: d

54. Computer network is to interconnect computers and special peripheral equipment that are distributed in

different geographic areas through communication links to form a big and powerful network system, so that a

great number of computers can transmit information and share resources conveniently. ( )

T.True

F.False


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Answer: t

55. Computer networks originated in 1970s. The concept of network at that time was host-based low-rate serial

connections, and the network provided remote program execution, remote printing and data services. ( )

T.True

F.False

Answer: f

56. Generally, computer networks fall into Ethernet and LAN according to the geographic coverage. ( )

T.True

F.False

Answer: f

57. LAN is used in limited geographic area. Access of high-bandwidth medium is not allowed in LAN. ( )

T.True

F.False

Answer: f

58. LAN features in short distance, low delay, high rate, and unreliable data transmission. ( )

T.True

F.False

Answer: f

59. For a hub, the average data volume and rate per user (port) is limited by the total number of active users

(ports). ( )

T.True


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F.False

Answer: t

60. The WAN connects LANs that are far away from each other, therefore, its architecture falls into the end

system (a set of users at both ends) and the communication system (intermediate links). ( )

T.True

F.False

Answer: t

61. Routers forward data between segments of WAN and between LANs, but they do not participate in route

generation. ( )

T.True

F.False

Answer: f

62. Network topology is a logic architecture, and it has no strict relationship with physical connections of the

equipments. ( )

T.True

F.False

Answer: t

63. Adopting circuit switching, the PSTN must allocate a specialized voice channel for each call. Messages are

transmitted in the form of digits over the PSTN. ( )

T.True

F.False

Answer: f


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64. Packet switching of WAN adopts store-and-forward switching. It divides the information to be transmitted into

packets of fixed length or variable length, and then stores and forwards in the unit of packet. ( )

T.True

F.False

Answer: t

65. Adopted in the cell switching network, the Asynchronous Transfer Mode (ATM) features in high-rate, low

delay and ensured transmission quality. ( )

T.True

F.False

Answer: t

66. Star topology networks are convenient to install, and easy to design, maintain and change. In addition, it is

easy to diagnose failures. Therefore, star topology is widely used in LANs.

T.True

F.False

Answer: t

67. The main functions of the physical layer includes ( ).

A.Defining physical addresses

B.Establishing end-to-end connections

C.Transmitting bit stream between terminal equipment with voltage, interfaces, cable specifications, and transport

distance defined

D.Transmitting data from one end to another

Answer: c


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68. Which of the following is a device for the data link layer? ( )

A.WAN switch

B.Router

C.Repeater

D.Gateway

Answer: a

69. Headers are added to the packets at the data link layer to form ( ). Then, they are transmitted to the physical

layer, and the bit stream is transmitted on the physical layer.

A.Frames

B.Cells

C.Packets

D.Fragments

Answer: a

70. Bridges work in the ( ) layer of the OSI reference model.

A.1st

B.2nd

C.3rd

D.4th

Answer: b

71. A host communicates with the other hosts in the local area network through ( ) at the data link layer.

A.Port number

B.Hardware address

C.Default gateway

D.Logic network address

Answer: b


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72. IP corresponds to the ( ) layer of the OSI reference model.

A.5th

B.3rd

C.2nd

D.1st

Answer: b

73. The main function of the network layer of the OSI reference model is to ( ).

A.Transmit the original bit stream over the channel

B.Ensure the correctness of information fragments

C.Decide how to route from the source to the destination

D.Strengthen bit stream transmission at the physical layer and perform flow control

Answer: c

74. Data fragmentation is performed at the ( ) of the OSI reference model.

A.Physical layer

B.Network layer

C.Transport layer

D.Access layer

Answer: c

75. When the data unit is in the network layer, we call it ( )

A.Fragment

B.Packet

C.Bit

D.Frame


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Answer: b

76. The ( ) of the OSI reference model provides end-to-end reliable data transmission and flow control.

A.Presentation layer

B.Network layer

C.Transport layer

D.Session layer

Answer: c

77. Which of the following is a TCP-based application? ( )

A.PING

B.TFTP

C.TELNET

D.OSPF

Answer: c

78. TCP, UDP and SPX are protocols of the ( ) layer of the OSI reference model.

A.Network

B.Transport

C.Session

D.Presentation

Answer: b

79. Which of the following is not a function of the transport layer? ( )

A.Maintenance of virtual connection

B.Error check

C.Flow control


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D.Route selection

Answer: d

80. The DNS works at the ( ).

A.Network layer

B.Transport layer

C.Session layer

D.Application layer

Answer: d

81. The SNMP works at the ( ).

A.Network layer

B.Application layer

C.Session layer

D.Presentation layer

Answer: b

82. Layer-3 switches are devices working at the ( ).

A.Network layer

B.Transport layer

C.Session layer

D.Data link layer

Answer: a

83. In internetworking and computer network engineering, the RFCs is the documents published by ( ).

A.ISO

B.IETF


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C.ITU

D.IEEE

Answer: b

84. OSI stands for ( ).

A.Organization for Standards Institute

B.Organization for Internet Standards

C.Open Standards Institute

D.Open Systems Interconnection

Answer: d

85. What layers does the OSI reference model have from the top to the bottom?( )

A.Application layer, transport layer, network layer, and physical layer

B.Application layer, presentation layer, session layer, network layer, transport layer, data link layer, and physical

layer

C.Application layer, presentation layer, session layer, transport layer, network layer, data link layer, and physical

layer

D.Application layer, session layer, transport layer, and physical layer

Answer: c

86. The correct process for data encapsulation is ( ).

A.data fragment -> packet -> frame -> bit stream -> data

B.bit stream -> data fragment -> packet -> frame -> data

C.data ->packet -> data fragment -> frame -> bit stream

D.data -> data fragment ->packet -> frame -> bit stream

Answer: d


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Answer: t

92. EIA/TIA-232, also known as RS-232, is a public physical layer standard. It is used to support unbalanced

circuits with the rate up to 64 kbps. ( )

T.True

F.False

Answer: t

93. To connect two routers through Ethernet interfaces, straight-through cable should be used between the routers.

( )

T.True

F.False

Answer: f

94. The session layer is used for virtual link establishment, error check, duplex negotiations and session

synchronization. ( )

T.True

F.False

Answer: f

95. Multiple application programs can share one link, which is called multiplexing. ( )

T.True

F.False

Answer: t

96. Between the network layer and the LLC sub-layer, Media Access Control (MAC) sub-layer is the management


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layer of the upper layer and the lower layer.

T.True

F.False

Answer: f

97. Transport layer protocols consist of protocols such as TCP, UDP and SPX. UDP and SPX provide unreliable

and connectionless services.

T.True

F.False

Answer: f

98. There are three methods for flow control. They are buffer technology, source quench message, and window

mechanism. The window mechanism adopts positive acknowledgement, therefore, it is reliable. ( )

T.True

F.False

Answer: t

99. Flow control mechanism is implemented at the data link layer. ( )

T.True

F.False

Answer: f

100. Encapsulation means that the network node packets the data to be transmitted with a specific protocol header

before transmission, sometimes it will add some information at the tail of the data unit. ( )

T.True

F.False

Answer: t


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101. Non-shielded twisted-pair cable provides enhanced anti-interference capability, and further transmission

distance than shielded twisted-pair cable.

T.True

F.False

Answer: f

102. Connection-orientated services are reliable packet services, and incur less data loss. ( )

T.True

F.False

Answer: t

103. Connection-orientated services are modeled on the postal system, with each packet carrying a complete

destination address. In addition, each packet is independent of other packets, and is transmitted via the selected

route. ( )

T.True

F.False

Answer: f

104. Which of the following is a network layer protocol? ( )

A.IP

B.ARP

C.ICMP

D.RARP

Answer: abcd


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105. Which of the following is a common cable standard for the Ethernet? ( )

A.10BASE-T

B.100BASE-T

C.100BASE-TX

D.1000BASE-TX

E.10BASE-TX

Answer: abc

106. Which of the following is DTE of the WAN? ( )

A.WAN switch

B.MODEM

C.Terminal host

D.Router

Answer: cd

107. Which of the following is common DCE of WAN? ( )

A.CSU/DSU

B.Router

C.WAN switch

D.MODEM

Answer: acd

108. Which of the following is a correct description of Ethernet MAC address? ( )

A.The MAC address of the equipment is globally unique.

B.The MAC address is composed of 56 binary digits, and we generally use the hex to express it.

C.The preceding six hex digits are allocated by the IEEE, and the subsequent six hex digits are assigned by the

producer.

D.If a computer is configured with two network interface cards, it will have two MAC addresses.


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C.Remote Procedure Call (RPC)

D.America Standard Code for International Interchange (ASCII)

Answer: abc

113. Common Presentation layer protocols are ( ).

A.JPEG

B.GIF

C.MPEG

D.MIDI

Answer: abcd

114. Protocol Data Units (PDUs) contained in the OSI reference model include ( ).

A.APDUs

B.BPDUs

C.PPDUs

D.SPDUs

Answer: acd

115. Which of the following is a WAN interface? ( )

A.X.21 interface

B.RS-232 interface

C.V.24 interface

D.V.35 interface

Answer: abcd

116. Which of the following is included in the connection-orientated service? ( )

A.Connection establishment


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B.Data transmission

C.Connection termination

D.Dynamic allocation of resources

Answer: abc

117. The data link layer functions to ( ).

A.Carry the packets of the network layer

B.Manage network topology

C.Check errors

D.Control flows

Answer: abcd

118. What features are defined in the physical layer? ( )

A.Error control in bit steam transmission

B.Mechanical feature

C.Electrical feature

D.Functional feature

Answer: bcd

119. Which of the following is right about the H3C router? ( )

A.The software platform of the H3C router is VSP.

B.The configuration of the H3C router can be implemented through the console interface only.

C.The console interface of the H3C router is RJ45.

D.The default baudrate of console interface is 9600 bps.

Answer: cd

120. To configure the H3C router using the HyperTerminal application on Windows system, flow control must be


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enabled on the HyperTerminal. ( )

T.True

F.False

Answer: f

121. To clear the configuration of a router, use the ( ) command.

A.reset history-command

B.reset saved-configuration

C.reset current-configuration

D.erase saved-configuration

Answer: b

122. To view the configuration of a H3C router, use the ( ) command.

A.show running-configuration

B.show current-configuration

C.display current-configuration

D.display configuration

Answer: c

123. To enter the system view from user view on a H3C router, use the ( ) command.

A.super

B.system-view

C.system view

D.enable

Answer: b

124. To get all commands and their descriptions in a command view, key in ( ) :


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A.?

B.!

C./

D.\

Answer: a

125. To stop the current command line execution on a H3C router, press ( ).

A.Ctrl+C

B.Ctrl+D

C.Ctrl+N

D.Ctrl+X

Answer: a

126. To check the connectivity of the network, use the command ( ) in the H3C COMWARE command line.

A.ping

B.display ip routing-table

C.show path

D.display path

Answer: a

127. To upgrade a H3C router through TFTP, which of the following statement is true? ( )

A.Upgrade through TFTP can be implemented via the console interface.

B.Only the router can act as the TFTP server.

C.Username and password need to be configured.

D.Upgrade through TFTP is faster than upgrade through Xmodem.

Answer: d


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128. When the NET method is chosen in BOOTROM menu to upgrade an H3C router, the transport protocol is

actually FTP.

T.True

F.False

Answer: f

129. In COMWARE3.4 of H3C router, show history-command can display history commands. ( )

T.True

F.False

Answer: f

130. In COMWARE3.4 of H3C router, run no shutdown can resume the port that has been shut down. ( )

T.True

F.False

Answer: f

131. On a H3C router, what short-cut keys can be used to complete a command?( )

A.Tab

B.?

C.Enter

D.Ctrl+C

Answer: a

132. The default encapsulation protocol on the WAN interface of a H3C router is ( ).

A.HDLC

B.X.25

C.PPP


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B.Initial

C.Establish

D.Authenticate

E.KeepAlive

F.Network

G.Terminate

Answer: acdfg

137. There is a/an ( ) handshake in the CHAP authentication of PPP.

A.one-way

B.two-way

C.three-way

D.four-way

Answer: c

138. Which is a wrong statement about CHAP authentication? ( )

A.The authenticating party sends the first authentication packet.

B.The authenticated party sends the first authentication packet.

C.The password will be transmitted during the authentication.

D.No password will be transmitted during the authentication.

Answer: bc

139. Which statement is wrong about Multilink PPP?

A.MP is negotiated in the NCP phase.

B.No authentication can be performed in MP negotiation.

C.PPP channels of different endpoint discriminators can be bound together.

D.MP binding only requires the same username of each PPP channel.

Answer: abcd


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140. In case of PPP PAP authentication failures, which of the following will occur? ( )

A.LCP is up, and NCP is down.

B.LCP is down, and NCP is down.

C.IP can be set up.

D.Both LCP and NCP can be up.

Answer: b

141. Which of the following statements is right about MP? ( )

A.MP does not allow packet fragmentation.

B.Parameters for MP negotiation include MRRU, SSNHF, endpoint discriminator and username.

C.Generally, MP-group binding is recommended.

D.The more MP bindings there are, the better it is.

Answer: c

142. Which of the following statements is true? ( )

A.PAP does not provide as much security as CHAP. Therefore, PAP shall not be used.

B.PPP links will be disconnected after being idle for a certain time.

C.PPP consists of MAC protocol, LCP protocol and NCP protocol.

D.PPP is a data link layer protocol, which provides point-to-point data link layer encapsulation.

Answer: d

143. The status of a PPP link shows:

Serial 1/0 current state : Administratively DOWN

Line protocol current state : DOWN

This means ( ).

A.The physical link has some problem.


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B.The interface was shutdown by the administrator.

C.The parameters are configured incorrectly.

D.Rebooting the router can solve the problem.

Answer: b

144. PPP CHAP/PAP authentication occurs before LCP negotiation. ( )

T.True

F.False

Answer: f

145. Which of the following statement is right about MP? ( )

A.In the MP mode, the MP parameters are negotiated at the NCP phase, instead of the LCP phase.

B.The endpoint discriminator uniquely identifies a network entity. Therefore, the PPP channels in one MP binding

shall not have same endpoint discriminator.

C.A MP link has a DTE party and a DCE party.

D.The MP link allows packet fragmentation. The fragments will be sent to the same destination over multiple

point-to-point links.

Answer: d

146. The encryption algorithm of CHAP authentication is very secure. Therefore, the username and password can

be transmitted over the network.

T.True

F.False

Answer: f

147. MP can be bound to the virtual-template interface only.

T.True


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F.False

Answer: f

148. For CHAP authentication, the authenticating party needs to know the username of itself and that of the

authenticated party, while the authenticated party does not need to know the username of the authenticating party.

T.True

F.False

Answer: t

149. Which of the following is wrong about PAP and CHAP? ( )

A.The authenticating party in CHAP authentication sends a random string to the authenticated party, attaching its

host name at the same time.

B.The authenticated party in PAP authentication sends the username and password to the authenticating party.

C.In PAP authentication, once the authenticated party receives the NAK packet, it will disconnect the link

immediately.

D.After the authenticating party of CHAP receives the response returned by the authenticated party, it will

calculate a result with the locally stored password and the random string, and then compare its own result with the

result in the received response If the two results match, an ACK message will be returned, otherwise, a NAK

message will be returned instead.

Answer: c

150. Which of the following is wrong? ( )

A.Serial 1/0 current state : DOWN; Line protocol current state : DOWN means the interface is not activated or the

physical layer is not up.

B.Serial number is up, line protocol is up(spoofing) means the interface is a dial-up interface, and connection is

established.

C.Serial 1/0 current state : UP; Line protocol current state : UP means the interface is ready for data transmission.

D.Serial 1/0 current state : UP; Line protocol current state : DOWN means the interface is activated, but the data


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link protocol is still under negotiation.

Answer: b


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Serial1/1

clock DTECLK1

link-protocol ppp

ip address ppp-negotiate

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: b


each other? ( )


#

sysname Router1

#

FTP server enable

#


#



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#

domain system

#

local-user admin



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FTP server enable

#


#


#

domain system

#

local-user admin



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return

A.Yes

B.No


Answer: b


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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async mode flow

#

interface Serial0/0

link-protocol ppp

ppp authentication-mode chap

ppp chap user h3c

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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service-type telnet terminal

level 3

service-type ftp

local-user h3c

password simple h3c

service-type ppp

#

interface Aux0

async mode flow

#

interface Serial0/0

clock DTECLK1

link-protocol ppp

ppp chap user h3c

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a


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each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Aux0

async mode flow

#



#



#

interface Serial0/0

clock DTECLK1

link-protocol ppp

ppp chap user h3c

ip address 10.0.0.2 255.255.255.0

#






#

return

A.Yes

B.No


Answer: a


each other? ( )



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#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

domain system

#

local-user admin



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#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin


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#


#


#

domain system

#

local-user admin



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#

return

A.Yes

B.No


Answer: a


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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ip address 10.0.0.1 255.255.255.0

#

interface Aux0

async mode flow

#

interface Serial0/0

link-protocol ppp

ppp mp Virtual-Template 1

#

interface Serial1/0

link-protocol ppp

ppp mp Virtual-Template 1

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#



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#

domain system

#

local-user admin



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#

return

A.Yes

B.No


Answer: a


each other? ( )


#

sysname Router1

#

FTP server enable

#


#

ppp mp user router-b bind Virtual-Template 1

#


#

domain system

#

local-user admin



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password simple router-b

service-type ppp

#

interface Virtual-Template1

ip address 10.0.0.1 255.255.255.0

#

interface Aux0

async mode flow

#

interface Serial0/0

link-protocol ppp

ppp authentication-mode pap

ppp pap local-user router-a password simple router-a

ppp mp

#

interface Serial1/0

link-protocol ppp



ppp mp

#

interface NULL0

#






#

return



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#

sysname Router2

#

FTP server enable

#


#

ppp mp user router-a bind Virtual-Template 1

#


#

domain system

#

local-user admin



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ppp pap local-user router-b password simple router-b

ppp mp

#

interface Serial1/0

clock DTECLK1

link-protocol ppp



ppp mp

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a


each other? ( )


#

sysname Router1


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interface Serial1/0

link-protocol ppp


ppp mp

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#

ppp mp user router-a bind Virtual-Template 1

#


#

domain system

#

local-user admin



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level 3

service-type ftp

local-user router-a

password simple router-a

service-type ppp

#

interface Virtual-Template1

ip address 10.0.0.2 255.255.255.0

#

interface Aux0

async mode flow

#

interface Serial0/0

clock DTECLK1

link-protocol ppp


ppp mp

#

interface Serial1/0

clock DTECLK1

link-protocol ppp


ppp mp

#

interface NULL0

#







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#

return

A.Yes

B.No


Answer: b


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Serial0/0

link-protocol ppp

ip address 20.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Aux0

async mode flow

#

interface Serial0/0

clock DTECLK1

link-protocol ppp

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a

163. If frame relay PVC switching is enabled on a router, the type of the frame relay interface shall be ( ).

A.DCE

B.DTE

C.NNI

D.UNI

Answer: ac


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C.Implement statistic multiplexing, transparent transmission of frames and error inspection at the data link layer

D.Provide SVC and PVC services

Answer: a

173. Frame relay works at the ( ) of the OSI reference model.

A.Physical layer and application layer

B.Physical layer and data link layer

C.Data link layer and network layer

D.Data link layer and Presentation layer

Answer: b

174. Which of the following describes frame relay correctly? ( )

A.The SVC is identified with a locally valid DLCI.

B.The SVC is identified with a globally valid DLCI.

C.The PVC is identified with a locally valid DLCI.

D.The PVC is identified with a globally valid DLCI.

Answer: ac

175. In a frame relay network, if static mapping is configured, Inverse ARP messages will not be sent over the

virtual circuit. ( )

T.True

F.False

Answer: t

176. Which of the following is right about DLCI? ( )

A.The DLCI is only valid locally.

B.The DLCI is assigned by the DCE party.


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C.The user DLCI ranges from 1 to 1007

D.Different physical interfaces can be set with the same DLCI.

Answer: abd

177. The available interface types for a frame relay sub-interface are ( ).

A.Point-to-point

B.NBMA

C.Point-to-multipoint

D.Broadcast

Answer: ac

178. Which of the following DLCIs are used by the Frame relay LMI generally? ( )

A.0

B.16

C.1007

D.1023

Answer: ad

179. The point-to-point sub-interface of frame relay can identify the remote end without being configured with

static address mapping. ( )

T.True

F.False

Answer: t

180. Which of the following is the LMI function of frame relay? ( )

A.Maintaining link status

B.Maintaining PVC status


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C.Advertising the adding of PVC

D.Advertising the deletion of PVC

Answer: abcd


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface Serial0/0

link-protocol fr

fr interface-type dce

fr map ip 10.0.0.2 255.255.255.0 20 broadcast

fr dlci 20

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#


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local-user admin



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A.Yes

B.No


Answer: a


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#



#

interface Serial0/0

link-protocol fr



fr dlci 30

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system


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#

local-user admin



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#



#

interface Serial0/0

link-protocol fr


fr dlci 20

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system


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return

A.Yes

B.No


Answer: b

184. Two routers are in direct back-to-back connection with the following configuration. Can they communicate

with each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#



#

interface Serial0/0

link-protocol fr

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin


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Answer: b


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface Serial0/0

link-protocol fr


fr dlci 20

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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level 3

service-type ftp

#

interface Aux0

async mode flow

#



#



#

interface Serial0/0

clock DTECLK1

link-protocol fr

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a


99/243

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each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



100/243

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link-protocol fr



fr dlci 30

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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service-type ftp

#

interface Aux0

async mode flow

#



#



#

interface Serial0/0

clock DTECLK1

link-protocol fr


fr dlci 20

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: b


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each other? ( )


#

sysname Router1

#

FTP server enable

#


#

fr switching

#


#

domain system

#

local-user admin



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#

interface Serial0/0

link-protocol fr

fr interface-type nni

fr dlci 20

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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level 3

service-type ftp

#

interface Aux0

async mode flow

#



#



#

interface Serial0/0

clock DTECLK1

link-protocol fr

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: b


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each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



106/243


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#


#


#

domain system

#

local-user admin



108/243

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#

return

A.Yes

B.No


Answer: a


each other? ( )


#

sysname Router1

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Aux0

async mode flow

#



#



#

interface Serial0/0

link-protocol fr


fr lmi type nonstandard

fr dlci 20

ip address 10.0.0.1 255.255.255.0

#

interface NULL0

#






#

return


#

sysname Router2

#

FTP server enable

#


110/243

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#


#

domain system

#

local-user admin



111/243


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async mode flow

#



#



#

interface Serial0/0

link-protocol fr


fr lmi type ansi

fr dlci 20

ip address 10.0.0.1 255.255.255.0

#

interface Serial1/0

clock DTECLK1

link-protocol ppp


#

interface Serial1/1

clock DTECLK1

link-protocol ppp


#

interface NULL0

#






113/243

TestInside GB0-183


#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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clock DTECLK1

link-protocol fr

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: b


each other? ( )


#

sysname Router1

#

FTP server enable

#


#

fr switching

#


115/243


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#

return


#

sysname Router2

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface Serial0/0

clock DTECLK1

link-protocol fr

#

interface Serial0/0.1

fr dlci 20

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#






#

return

A.Yes

B.No


Answer: a

192. Three routers are connected as shown in the figure. Can RTA and RTB communicate with each other with the

following configuration? ( )

[RTA]display current-configuration

#

sysname RTA

#

FTP server enable


118/243


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authentication-mode scheme

#

return

[RTB]display current-configuration

#

sysname RTB

#

FTP server enable

#


#


#

domain system

#

local-user admin



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clock DTECLK1

link-protocol fr


fr dlci 200

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#





#

return

A.Yes

B.No


Answer: a





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#

sysname RTA

#

FTP server enable

#


#


#

domain system

#

local-user admin



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ip address 10.0.0.1 255.255.255.0

#

interface Serial2/1

clock DTECLK1

link-protocol ppp


#

interface NULL0

#





#

return

[FR-SWITCH]display current-configuration

#

sysname FR-SWITCH

#

FTP server enable

#


#

fr switching

#


#

domain system

#

local-user admin



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level 3

service-type ftp

#

interface Aux0

async mode flow

#



#



#

interface Serial0/0

link-protocol fr


fr dlci-switch 200 interface Serial1/0 dlci 100

fr dlci 200

#

interface Serial1/0

link-protocol fr


fr dlci-switch 100 interface Serial0/0 dlci 200

fr dlci 100

#

interface Serial1/1

clock DTECLK1

link-protocol ppp


#

interface NULL0


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#





#

return


#

sysname RTB

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#

interface Serial0/0

clock DTECLK1

link-protocol fr


fr dlci 200

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#





#

return

A.Yes

B.No


Answer: a


128/243


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link-protocol fr


fr dlci 100

ip address 10.0.0.1 255.255.255.0

#

interface Serial2/1

clock DTECLK1

link-protocol ppp


#

interface NULL0

#





#

return


#

sysname FR-SWITCH

#

FTP server enable

#


#

fr switching

#


#

domain system


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#

local-user admin



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#



#

interface Serial0/0

clock DTECLK1

link-protocol fr


fr dlci 200

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#





#

return

A.Yes

B.No


Answer: b


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#

sysname RTA

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Serial2/0

clock DTECLK1

link-protocol fr


fr dlci 100

ip address 10.0.0.1 255.255.255.0

#

interface Serial2/1

clock DTECLK1

link-protocol ppp


#

interface NULL0

#





#

return


#

sysname FR-SWITCH

#

FTP server enable

#


#

fr switching

#



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#

domain system

#

local-user admin



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#

interface NULL0

#

fr switch pvc interface Serial0/0 dlci 200 interface Serial1/0 dlci 100

#





#

return


#

sysname RTB

#

FTP server enable

#


#


#

domain system

#

local-user admin



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async mode flow

#



#



#

interface Serial0/0

clock DTECLK1

link-protocol fr


fr dlci 200

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#





#

return

A.Yes

B.No



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Answer: b

196. Two routers are in back-to-back connection with the following configuration. Which of the following is right?

( )


#

sysname RTA

#

FTP server enable

#


#


#

domain system

#

local-user admin



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interface Aux0

async mode flow

#


ip address 20.0.0.1 255.255.255.0

#



#

interface Serial0/0

link-protocol fr


fr map ip 10.0.0.2 255.255.255.0 100

fr dlci 100

ip address 10.0.0.1 255.255.255.0

#

interface Serial1/0

link-protocol ppp


#

interface Serial1/1

clock DTECLK1

link-protocol ppp


#

interface NULL0

#

rip

network 10.0.0.0

network 20.0.0.0

peer 10.0.0.2


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#






#

return


#

sysname RTB

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#



#

interface Serial0/0

clock DTECLK1

link-protocol fr

fr map ip 10.0.0.1 255.255.255.0 100

fr dlci 100

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#

rip

network 10.0.0.0

network 30.0.0.0

peer 10.0.0.1

#






#

return

A.The serial ports of the two routers can communicate with each other.

B.The serial ports of the two routers can not communicate with each other.

C.The two routers can learn the routes for the subnets of the Ethernet interfaces from each other.

D.The two routers can not learn the routes for the subnets of the Ethernet interfaces from each other.


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Answer: ac


( )


#

sysname RTA

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#






#

return


#

sysname RTB

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#



#

interface Serial0/0

clock DTECLK1

link-protocol fr

fr map ip 10.0.0.1 255.255.255.0 100

fr dlci 100

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#

rip

network 10.0.0.0

network 30.0.0.0

#






#

return






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Answer: ad


( )


#

sysname RTA

#

FTP server enable

#


#


#

domain system

#

local-user admin



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network 10.0.0.0 0.0.0.255

network 20.0.0.0 0.0.0.255

#






#

return


#

sysname RTB

#

FTP server enable

#


#


#

domain system

#

local-user admin



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#


ip address 30.0.0.1 255.255.255.0

#



#

interface Serial0/0

clock DTECLK1

link-protocol fr

fr map ip 10.0.0.1 255.255.255.0 100

fr dlci 100

ip address 10.0.0.2 255.255.255.0

#

interface NULL0

#

ospf 1

peer 10.0.0.1

area 0.0.0.0

network 10.0.0.0 0.0.0.255

network 30.0.0.0 0.0.0.255

#






#

return




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Answer: ac


( )


#

sysname RTA

#

FTP server enable

#


#


#

domain system

#

local-user admin



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service-type ftp

#

interface Aux0

async mode flow

#


ip address 20.0.0.1 255.255.255.0

#



#

interface Serial0/0

link-protocol fr


fr map ip 10.0.0.2 255.255.255.0 100

fr dlci 100

ip address 10.0.0.1 255.255.255.0

#

interface Serial1/0

link-protocol ppp


#

interface Serial1/1

clock DTECLK1

link-protocol ppp

i

GB0-Huawei

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