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QUESTION NO: 1

Huawei GB0-360: Practice Exam

Which of the following are right about the Stub area? ( )

A. There can not be any ASBR in the Stub area.

B. You should configure as many Stub areas as possible.

C. There can be one ASBR at most in the Stub area.D. External routes can not be propagated in the Stub area.

Answer: A,B,D

QUESTION NO: 2

Which of the following are reason for using layer 3 switches instead of routers in a LAN? ( )

A. Isolate the broadcast domain.

B. Cost less.

C. Enable more route policies.

D. Based on the hardware, the packet is forwarded in line-speed.

Answer: B,D

QUESTION NO: 3

Quidway AR18 series routers are meant for ( ).

A. Convergence layer

B. Core layer

C. All layers

D. Access layer

Answer: D

QUESTION NO: 4

Which of the following protocols are in the WAN? ( )

A. PPP

B. ATM

C. Ethernet-II

D. LAPB

E. X.25

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F. Frame-Relay

Answer: A,B,D,E,F

QUESTION NO: 5


Which of the following protocols are in the WAN? ( )

A. PPP

B. LAPB

C. X.25

D. ATM

E. Frame-Relay

F. Ethernet-II

Answer: A,B,C,D,E

QUESTION NO: 6

Which of the following are advantage in segmenting the network with layer 2 Ethernet switches? (

)

A. Minimize collisions

B. Prohibit the broadcast packet from being dispatched

C. Provide dedicated bandwidth for each user

D. Reduce the items in the routing table

Answer: A,C

QUESTION NO: 7

Comparing with POS, the implementation of ATM is more complex and expansive. ( )

A. True

B. False

Answer: A

QUESTION NO: 8


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Which of the following are right about RIP V1 and RIP V2? ( )

A. RIP V2 does not support multicast. It is OK that no subnet information is advertised.

B. RIP V1 does not support multicast. By default, no subnet information is advertised.

C. RIP V2 by default uses the broadcast. To advertise the RIP message in multicast, use the rip

version 2 multicast command.

D. In RIP V1, route aggregation can be canceled to advertise the subnet information.

Answer: B

QUESTION NO: 9

2 VLANs are specified on a layer 2 Ethernet switch. Interface 1, 2 and 6 are assigned to VLAN2

for the engineering department. Interface 3, 4 and 5 are assigned to VLAN3 for the marketing

department. How does the marketing department communicate with the engineering department?

( )

A. Depend on the broadcast packet forwarding

B. Via this switch

C. Via a router

D. Via the trunk link

Answer: C

QUESTION NO: 10

A frame relay network can be full-meshed. If there are 6 routers connected to the frame relay

network, the required number of PVCs will be ( ).

A. 30

B. 6

C. 5

D. 15

Answer: D

QUESTION NO: 11

Which of the following items are included in the Network design? ( )

A. Routing design


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B. WAN design

C. Subnet planning

D. LAN design

Answer: A,B,C,D

QUESTION NO: 12


What are the two ATM cells defined in the B-ISDN network? ( )

A. VCI

B. VPI

C. NNI

D. UNI

Answer: A,B

QUESTION NO: 13

Normally, What equipments are needed for an ISP?

A. DNS server

B. Routers

C. RADIUS server

D. Access server

E. Web server

Answer: A,B,C,D,E

QUESTION NO: 14

The LAN varies from WAN in many terms. The most significant difference is that LAN which has

only one computer communication network consists of no network layer but two lowest layers. ( )

A. True

B. False

Answer: B

QUESTION NO: 15


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When analyzing the traffic in the network, you should understand the traffic generated by protocols

and applications. Which of the following factors will affect the traffic in the network? ( )

A. Broadcast data

B. Frame size

C. Error check mechanism

D. Traffic control policy

Answer: A,B,C,D

QUESTION NO: 16

ISDN provides two types of service. Which is the one supported by the BRI interface? ( )

A. 23B+DB. 2B+D

C. 1B+2D

D. 30B+D

Answer: B

QUESTION NO: 17

In a small-scale network the 3-layers network can be simplified to ( )

A. Meshed network

B. One layer centrally radiated network

C. One layer distributed network

D. 2-layers network

Answer: B,C,D

QUESTION NO: 18

A router running OSPF, an interface of which belongs to Area 0, and another of which belongs to

Area 9. Five static routes are imported. How many LSAs will the router produce at least? ( )

A. 10

B. 5

C. 9

D. 8


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E. 7

Answer: C

QUESTION NO: 19


Where is the U interface defined in the ISDN network? ( )

A. Between NT1 and the ISDN network

B. Between NT1 and NT2

C. Between TE2 and TA

D. Between TE1 and NT

Answer: A

QUESTION NO: 20

Which are right about VLAN? ( )

A. It is impossible to communicate between VLANs.

B. It partitions the broadcast domain.

C. It offers logical security.

D. It is convenient to add, remove or change a terminal.

Answer: B,C

QUESTION NO: 21

Which of the following are right description to the range of the subnet IP address in an IP network?

( )

A. The IP address unnumbered can be adopted to save the IP address, so the subnet address

range should be smaller than the necessary.

B. All of the above contains something reasonable, but not reasonable enough to be carried out in

practice.

C. The subnet address range should meet the actual requirement, and have the redundancy for

the future extending.

D. The IP address range should be the exponential of 2 for the convenience of policy

implementations.

Answer: C,D


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QUESTION NO: 22


Which topology can be adopted for the frame relay network? ( )

A. Central radiationB. Partial mesh

C. Full mesh

D. Full mesh in use of sub-interfaces

Answer: A,B,C,D

QUESTION NO: 23

In a frame relay network, what protocol is used to monitor and control the state of PVC? ( )

A. FECN

B. LMI

C. BECN

D. DLCI

Answer: B

QUESTION NO: 24

The switch dispatches a BPDU (Bridge protocol data unit) from all its activated interfaces in a

certain amount of time. When the other switches receives the BPDU, they compute with the STA

(Spanning Tree Algorithm) to see whether there is a loop in the network. ( )

A. False

B. True

Answer: B

QUESTION NO: 25

Multiple mediums can be chosen for LANs. Which has the furthest transmission distance? ( )

A. Unshielded twisted pairs

B. Copper shielded twisted pairs


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C. Single-mode optics

D. Multi-mode optics

Answer: C

QUESTION NO: 26


Suppose that a central station connects to a frame relay network via a serial line. Five virtual

circuits have been defined to communicate with 5 remote stations respectively. Now the remote

station can not receive the route update packet, which by examination is caused by split horizon.

What do you suggest to resolve this problem? ( )

A. Specify static routes

B. Modify the metric

C. Enable sub-interfaces

D. Disable the split horizon

E. Filter the route

Answer: A,C,D

QUESTION NO: 27

As QoS can be described by a series of measurable parameters, which of the following

parameters can be used to describe QoS? ( )

A. Service availability

B. Delay, variable delay

C. Throughout

D. Packet loss rate

Answer: A,B,C,D

QUESTION NO: 28

Which of the following items are the WAN redundancy backup technologies? ( )

A. Router backup

B. All the above items are not the WAN redundancy backup technology.

C. VRRP technologyD. Port backup technology


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Answer: A,C,D

QUESTION NO: 29


Which of the following descriptions of the route is false?

A. One route entry may include multiple network segments by adopting the CIDR technology.

B. VLSM, CIDR and the routing summary technology enable a simpler router configuration.

C. The scale of the routing table is reduced by adopting the CIDR and the routing summary

technology.

D. When multiple routes to the same destination are found in a routing table, adopt the longest

match algorithm.

Answer: B

QUESTION NO: 30

Which of the following descriptions of CAR are true? ( )

A. CAR can be used either in egress or ingress of the network and the service flow can be

differentiated according to the packet classification result.

B. As a bandwidth management mechanism, it adopts the token bucket technology to allocate and

measure the bandwidth,

C. Not colliding with the queue technology, the CAR technology can only be adopted in the

network edge access layer to ensure that the core is not affected by the excessive high priority

service.

D. It is used to restrict the flow of a certain packet, for example, it restricts the bandwidth

proportion occupied by the FTP packet to be less than 50%.

Answer: A,B,C,D

QUESTION NO: 31

Which are right about the full duplex Ethernet? ( )

A. Ethernet frames can not be received and sent at the same time.

B. It can be used for the Point-to-Multi-point connection.

C. It can only be used for the Point-to-Point connection.

D. Ethernet frames can be received and sent over the twisted pairs at the same time.

Answer: C,D


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QUESTION NO: 32


Which of the following descriptions of DIF-SERV service model are true? ( )

A. It needs not the signaling for notifying the router before the application program sends out thepacket. And to the Differentiated service, the network need not allocate the state for every flow.

B. It is generally used to provide end-to-end Qos for some important application.

C. It is realized by the CAR or queue technology.

D. It may designate the QoS of the packet in different ways, for example, designating the

precedence, the source address and destination address of the packet.

Answer: A,B,C,D

QUESTION NO: 33

Which of the following principles should be observed when implementing the IP address planning?

( )

A. Continuity

B. Extendibility

C. Uniqueness

D. Flexibility

Answer: A,B,C,D

QUESTION NO: 34

The core layer of a network is responsible for data forwarding with high speed. It ensures the

reachability of every equipment in the network. The equipment for the core layer can filter androute the packet according to the routing policy. Therefore, we should configure as many routing

policies as possible on the core layer equipment to enable a better performance. ( )

A. True

B. False

Answer: B

QUESTION NO: 35


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Suppose such a case: Two Quidway AR18-12 routers, RTA and RTB, connect to each other via a

serial interface. The IP address of RTA is 10.110.0.1/30 and the IP address of RTB is

10.110.0.2/30. The IP address of the LAN to which RTA is connected (referred as RTA LAN) via

an Ethernet interface is 11.110.0.0/16, the IP address of the LAN to which RTB is connect

(referred as RTB LAN) via an Ethernet interface is 11.111.0.0/16. If only RIP V1 is enabled on all

the interfaces mentioned above, including the two ports, which of the following are right? ( )

A. The user in the RTA LAN can have access to the PC in the RTB LAN.

B. The user in the RTA LAN can not have access to the PC in the RTB LAN.

C. The user in the RTB LAN can have access to the PC in the RTA LAN.

D. The user in the RTB LAN can not have access to the PC in the RTA LAN.

Answer: B,D

QUESTION NO: 36

Which are right about the collision domain and the broadcast domain? ( )

A. All nodes in a collision domain belong to one broadcast domain.

B. All nodes in the collision domain share one transmission medium.

C. Hubs can isolate the collision domain.

D. The layer 2 switch can isolate the collision domain.

E. The router can isolate the broadcast domain. Each collision domain contains more than onebroadcast domains.

Answer: A,B,D

QUESTION NO: 37

If a PVC is defined with CIR=256Kbit/s, and committed rate measure interval Tc10s. What is the

committed burst size(Bc)? ( )

A. 1544Kbps

B. 15440Kbps

C. 10

D. 2560Kbps

E. 256Kbps

Answer: D


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QUESTION NO: 38


For the route from the IBGP peers and with the same destination, the router will choose the route

with the highest local preference. Similarly, for the route from the EBGP peers and with the same

destination, the route will choose the route with the lowest MED.( )

A. FalseB. True

Answer: B

QUESTION NO: 39

The network designer communicates with the user to get the requirement for the network. What

should be paid attention at this stage? ( )

A. Understand the organization hierarchy of the user and find the appropriate person to consult.

B. List the requirement for the network performance

C. Differentiate what requirement are to be fulfilled in practice by the user, what to be fulfilled in

the design

D. Obtain the investment details

Answer: A,B,C,D

QUESTION NO: 40

You should make a analysis according to the information collected for the network design. Which

of the following should among your consideration for the network with data, voice and video

transmission? ( )

A. WAN connection type to be adopted

B. Network scale

C. Reliability

D. Real-time

Answer: A,B,C,D

QUESTION NO: 41

Which of the following technologies can be adopted by BGP4 to aggregate multiple Class C routes

into one route? ( )


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A. IBGP

B. VLSM

C. EBGP

D. CIDR

Answer: D

QUESTION NO: 42


Which of the following are right description to IP Over SDH and IP Over ATM?( )

A. IP Over ATM requires costly equipments.

B. IP Over ATM provides a variety of QoS features.

C. IP Over SDH is usually applied to the Point-to-Point link.

D. IP Over SDH is more adaptable to the status.

Answer: A,B,C,D

QUESTION NO: 43

Which of the following types are the abstract of the topology in OSPF? ( )

A. The interface is connected to a router via a Point-to-Point network.

B. The interface is connected to multiple routers via a broadcast network or a NBMA network.

C. There is only one router in the network segment to which the interface is connected.

D. The interface is connected to multiple routers via a Point-to-Multipoint network.

Answer: A,B,C,D

QUESTION NO: 44

Generally we analyze the network security of users from two aspects. One is from the layers of the

network such as the security threat existing in the network layer or the link layer. The other is from

the networking of users. It is recommended that the actual service of the users should be

considered, such as the key trade data. We should remind the users to pay attention to the

security problem like this all the time. These descriptions are true? ( )

A. False

B. True

Answer: B


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QUESTION NO: 45



reachability of every equipment in the network. The equipment for the core layer can filter and

route the packet according to the routing policy. Therefore, we should configure as many routing

policies as possible on the core layer equipment to enable a better performance. ( )

A. False

B. True

Answer: A

QUESTION NO: 46

Which of the following descriptions of the INT-SERV service model are true? ( )

A. It can guarantee the bandwidth and delay limit to satisfy the requirement of the application

program.

B. The signaling RSVP sends the Qos request to the router application program.

C. Under this model, the network allocates a status for every traffic and the classification, traffic

policing, queue and dispatching of the packet are performed on the basis of this state to fulfill the

commitment to the application program.

D. It can provide the controlled-load service: It provides the Controlled-Load service to guarantee

the quasi-non-overload service provided to the packet even in the case of network overload. That

is, the low delay and high passing rate of the application program packet is guaranteed in the case

of the network congestion.

Answer: A,B,D

QUESTION NO: 47

Which of the following items are the costs for the network reliability? ( )

A. Maintenance cost: Cost of the equipment management, maintenance and personnel

B. Line cost: The lease fee of the redundant lines such as ISDN, PSTN and FR if needing to

backup the line

C. Equipment cost: The cost of the redundant equipment including the system, software, router

and switch to guarantee the reliability

D. Firewall cost for avoiding the Hacker


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Answer: A,B,C

QUESTION NO: 48


Which of the following items describe the functions of NAT (Network address translation) ? ( )

A. It may hide the physical address of the interior network and enable the exterior network to get

only its logical address.

B. It may provide the services of WEB, FTP, SMTP and TELNET to the outside. The server put in

the interior network not only guarantees the security but also facilitate the server maintenance.

C. Combining with dial-control-center, it enables users in the LAN to be online easily through a

router.

D. It can map the source address+port of the packet sent out by the interior users to be the

address+port of an interface.

Answer: B,C,D

QUESTION NO: 49

Which of the following items should be considered when implementing the routing protocol

design? ( )

A. Whether it satisfies the future expansion of the network

B. Adaptability to the change of the network topology structure

C. The openness of the routing protocol

D. It can be interconnected with other network

Answer: A,B,C,D

QUESTION NO: 50

Which of the following is right about the defects of the Ethernet and their resolution? ( )

A. The main problem for an Ethernet is collision. But collision is common for every network.

B. Ethernet can lead to collisions. Switches can be used to partition the collision domains to isolate

the collision.

C. The switched Ethernet adopts the star topology physically, but logically is a bus topology, which

enables the traffic can be monitored by each equipment. It is recommended to use the physical

bus topology.

D. To resolve the collision, the Ethernet adopts back-off algorithm, thus increases the network

traffic and consumes the bandwidth. Switches can be used to resolve the problems caused by the

back-off algorithm.


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Answer: B

QUESTION NO: 51


Which of the following should be considered in LAN designing? ( )

A. Network construction cost

B. Security

C. Expansibility

D. Bandwidth requirement

Answer: A,B,C,D

QUESTION NO: 52

There is a contradiction presented in most of the network design. A true understanding of it will

help to improve the performance of the network under design. What is the contradiction? ( )

A. Investment and network scalability

B. Network reliability and response time

C. Cost and network performance

D. Network security and real-timeness

Answer: C

QUESTION NO: 53


reachability of every equipment in the network. The equipment for the core layer can filter and

route the packet according to the routing policy. Therefore, we should configure as many routingpolicies as possible on the core layer equipment to enable a better performance. ( )

A. True

B. False

Answer: B

QUESTION NO: 54

Which is mostly used in the frame relay network? ( )


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A. DLCI

B. SVC

C. PVC

D. LMI

Answer: C

QUESTION NO: 55


The router running BGP will follow some advertising rules for forwarding the route. Which are

wrong about the rules? ( )

A. The used routes in its routing table will be advertised only to its IBGP peers.

B. All routes obtained from its IBGP peers will be advertised to its EBGP peers.

C. The used routes in its routing table will be advertised only to its EBGP peers.

D. All routes obtained from its EBGP peers will be advertised to its IBGP peers.

Answer: A,B,C

QUESTION NO: 56

Which layer is Quidway S3526E for in an enterprise network? ( )

A. Network layer

B. Access layer

C. Core layer

D. Convergence layer

Answer: D

QUESTION NO: 57

Which of the following types are the abstract of the topology in OSPF? ( )

A. The interface is connected to multiple routers via a broadcast network or a NBMA network.

B. There is only one router in the network segment to which the interface is connected.

C. The interface is connected to multiple routers via a Point-to-Multipoint network.

D. The interface is connected to a router via a Point-to-Point network.

Answer: A,B,C,D


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QUESTION NO: 58


Which of the following can be a right IP address of a host? ( )

A. 224.0.0.5

B. 202.112.5.0/24

C. 127.32.5.62/24D. 162.111.111.111/24

Answer: D

QUESTION NO: 59

Which of the following are right about RIP V1 and RIP V2? ( )

A. RIP V1 does not support multicast. By default, no subnet information is advertised.

B. In RIP V1, route aggregation can be canceled to advertise the subnet information.

C. RIP V2 by default uses the broadcast. To advertise the RIP message in multicast, use the rip

version 2 multicast command.

D. RIP V2 does not support multicast. It is OK that no subnet information is advertised.

Answer: A

QUESTION NO: 60

Which of the following route types is adopted for the Stub domain in OSPF network to be

connected with the backbone area? ( )

A. Dynamic routing

B. The default routing automatically generated by the router

C. Static routing

D. Floating static routing

Answer: B

QUESTION NO: 61

In the network environment as shown in the figure, which of the routing protocol will generate two

colliding routes to 172.16.0.0 in the router A? ( )


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A. RIP

B. OSPF

C. BGP

D. IS-IS

Answer: A

QUESTION NO: 62


Which of the following will be prohibited in a typical application of the firewall? ( )

A. Static route

B. Telnet

C. Proxy ARP service

D. Proxy service

Answer: B,C,D

QUESTION NO: 63

A topology has to be chosen for a LAN or a WAN. Which topology has the smallest delay, the

highest reliability but the most complicate management? ( )

A. Ring

B. Star

C. TreeD. Mesh


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Answer: D

QUESTION NO: 64


Which is the bandwidth of one channel of voice data flow pressed by the G.729 in the IP-bore

network? ( )

A. 48Kbps

B. 728Kbps

C. 12kbps

D. 2Kbps

Answer: C

QUESTION NO: 65

Which of the following are right about the route aggregation? ( )

A. Route aggregation can be performed dynamically by the dynamic routing protocol. But the

performance varies with protocols.

B. Route aggregation can summarize all routes of IP addresses of an organization into one route

to reduce the entries in the routing table.

C. Route aggregation is meant for the hierarchical structured network, not for the plane (non-

hierarchical) structured.

D. Route aggregation can hide the internal topology changes to the external.

Answer: A,B,C,D

QUESTION NO: 66

It should be noted that different topologies enable different fault recovery. Which of the following

topologies have single point fault?

A. Ring topology

B. Mesh topology

C. Star topology

D. Tree topology

Answer: C,D


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QUESTION NO: 67


A qualified network design should be implemented step by step. The next step after the

requirement analysis is ( ).

A. Solution output

B. Choice of equipmentsC. Choice of network design model and topology

D. Traffic analysis

Answer: C

QUESTION NO: 68

Which of the following should be considered in LAN designing? ( )

A. Security

B. Expansibility

C. Network construction cost

D. Bandwidth requirement

Answer: A,B,C,D

QUESTION NO: 69

Which of the following defines the spanning tree protocol? ( )

A. 802.1d

B. 802.3u

C. 802.2

D. 802.5

Answer: A

QUESTION NO: 70

Which of the following descriptions of the BGP routing protocol are true? ( )

A. BGP only calculates the routing increment and is insensitive to the network topology and scale.

In a large-scale network, it has a faster convergence speed than OSPF.

B. BGP suppresses the inter-domain routing oscillation by the means of the routing attenuation to

restrict the routing change in one domain. And the convergence suppression time can be modified.


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C. BGP which does not search the routing itself only transmits the routing searched by IGP.

D. BGP is a distance vector routing protocol

Answer: A,B,C,D

QUESTION NO: 71

Which of the following descriptions of the BGP routing protocol are true? ( )

A. BGP is a distance vector routing protocol

B. BGP which does not search the routing itself only transmits the routing searched by IGP.

C. BGP suppresses the inter-domain routing oscillation by the means of the routing attenuation to

restrict the routing change in one domain. And the convergence suppression time can be modified.

D. BGP only calculates the routing increment and is insensitive to the network topology and scale.

In a large-scale network, it has a faster convergence speed than OSPF.

Answer: A,B,C,D

QUESTION NO: 72

The cable for cabled TV signals can be used to provide high bandwidth data transmission. What is

the adopted technology? ( )

A. Cable Modem

B. ADSL

C. XDSL

D. DSL

Answer: A

QUESTION NO: 73

For network 172.168.16.0, its subnet mask is 255.255.252.0, then Which of the following can be

the address of the neighboring subnet? ( )

A. 172.168.24.0

B. 172.168.20.0

C. 172.168.32.0

D. 172.168.48.0

Answer: B


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QUESTION NO: 74


Generally we analyze the network security of users from two aspects. One is from the layers of the

network such as the security threat existing in the network layer or the link layer. The other is from

the networking of users. It is recommended that the actual service of the users should be

considered, such as the key trade data. We should remind the users to pay attention to the

security problem like this all the time. These descriptions are true? ( )

A. True

B. False

Answer: A

QUESTION NO: 75

When making the network reliability design, which of the following items should be considered? ( )

A. Different security requirements of different layers

B. The interruption times of the specific service because of the network congestion

C. Invested cost

D. Benefit/loss

Answer: A,C,D

QUESTION NO: 76

Order the following in the descending sequence of cost of network topologies. The correct answer

is ( )

A. Ring>Tree>Star>Mesh

B. Tree>Star>Mesh>Ring

C. Star>Tree>Ring>Mesh

D. Mesh>Ring>Tree>Star

Answer: D

QUESTION NO: 77

Quidway AR18 series routers are meant for ( ).


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A. Access layer

B. All layers

C. Core layer

D. Convergence layer

Answer: A

QUESTION NO: 78


Which of the following are right about the route aggregation? ( )

A. Route aggregation can summarize all routes of IP addresses of an organization into one route

to reduce the entries in the routing table.

B. Route aggregation is meant for the hierarchical structured network, not for the plane (non-

hierarchical) structured.

C. Route aggregation can be performed dynamically by the dynamic routing protocol. But the

performance varies with protocols.

D. Route aggregation can hide the internal topology changes to the external.

Answer: A,B,C,D

QUESTION NO: 79

Which of the following descriptions of AAA (Authentication, Authorization and Accounting) are

true? ( )

A. Authentication: Users (including Login users and PPP access users) must be authenticated

before being permitted to access the network resource. When authenticating, the user database

maintained by the router or by the RADIUS server can be selected

B. All the above descriptions are false

C. Authorization: Describe the authority information of user rights by defining a series of attributesand this information is stored in the database maintained by the RADIUS server.

D. Accounting: Its function is to trace and audit users?access to the network resource

Answer: A,C,D

QUESTION NO: 80

WAN is the backbone of the Internet. Which of the following is the most important in the WAN

design?


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A. Reliability

B. Cost

C. Traffic amount

D. Network delay

Answer: A

QUESTION NO: 81


The related design documents must accompany with the network solution, such as solution

proposal. ( )

A. True

B. False

Answer: A

QUESTION NO: 82

Which of the following are needed to construct an Enterprise network?( )

A. Routers

B. Ethernet switch

C. PCs

D. Operation system

Answer: A,B,C,D

QUESTION NO: 83

Network security should be considered when implementing remote access. For every security

protocol adopted by the router, it will reduce the performance of the equipment. ( )

A. True

B. False

Answer: A

QUESTION NO: 84


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For the route imported by BGP, its origin can be IGP or Incomplete. Because the route with the

Incomplete attribute is imported through the import-route command, it has higher priority. ( )

A. True

B. False

Answer: B

QUESTION NO: 85

which of the following are right about the split horizon in the RIP? ( )

A. The split horizon is used to solve the route loop problem. Its main idea is not to forward the

routing information to the neighbor from the interface over which the routing information is

received from the neighbor.B. The split horizon has some side-effects, sometimes some side effect will deviate the router from

the correct routing information.

C. The split horizon is enabled by default. If necessary, it can be disabled.

D. The split horizon can only solve the route loop between 2 routers. It can not solve the route loop

between more than 2 routers.

Answer: A,B,C,D

QUESTION NO: 86

For network 172.168.16.0, its subnet mask is 255.255.252.0, then Which of the following can be

the address of the neighboring subnet? ( )

A. 172.168.32.0

B. 172.168.48.0

C. 172.168.24.0

D. 172.168.20.0

Answer: D

QUESTION NO: 87

A router running OSPF, an interface of which belongs to Area 0, and another of which belongs to

Area 9. Five static routes are imported. How many LSAs will the router produce at least? ( )

A. 7


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B. 9

C. 5

D. 10

E. 8

Answer: B

QUESTION NO: 88


QoS provides different quality services to meet different requirements. Which of the following

items are the functions provided by QoS? ( )

A. Set the priority of the packet

B. Prevent and manage the network congestion

C. Provide the special bandwidth to users

D. Reduce the loss rate of the packet

Answer: A,B,C,D

QUESTION NO: 89

Which of the following should be considered during your requirement collection for mainframe

computer? ( )

A. Backups

B. Security

C. Usage rate

D. Database

Answer: A,B,C,D

QUESTION NO: 90

Which topology can be adopted for the frame relay network? ( )

A. Partial mesh

B. Central radiation

C. Full mesh

D. Full mesh in use of sub-interfaces

Answer: A,B,C,D


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QUESTION NO: 91


Which of the following are the feature of the layer 3 switching? ( )

A. Ethernet provides a variety of interfaces to interconnect with multiple subnets.B. Except the first route decision, the following data traffic with the same source and destination

addresses are forwarded via layer 2.

C. In corporation with the appropriate hardware, data switching can be accelerated.

D. Optimized routing mechanism can improve the routing efficiency.

Answer: A,B,C,D

QUESTION NO: 92

Which of the following is right about the defects of the Ethernet and their resolution? ( )

A. To resolve the collision, the Ethernet adopts back-off algorithm, thus increases the network

traffic and consumes the bandwidth. Switches can be used to resolve the problems caused by the

back-off algorithm.

B. The main problem for an Ethernet is collision. But collision is common for every network.

C. Ethernet can lead to collisions. Switches can be used to partition the collision domains to

isolate the collision.

D. The switched Ethernet adopts the star topology physically, but logically is a bus topology, which

enables the traffic can be monitored by each equipment. It is recommended to use the physical

bus topology.

Answer: C

QUESTION NO: 93

Which of the following descriptions of CQ queue strategy are true? ( )

A. CQ can allocate different bandwidth to different service data.

B. CQ allocates the bandwidth to different service packets in proportion. The bandwidth of the

existing packet can be expanded automatically if some types of packets do not exist.

C. The defect of CQ is that it needs to be configured and the processing speed is slow.

D. All the above descriptions are false.

Answer: A,B,C


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QUESTION NO: 94


Which is right about the core layer? ( )

A. Routers working the core layer do not need to backup.

B. Complicated QoS policies must be implemented in the core layer.

C. The main task of the core layer is to exchange packets.D. Core layer should adopt the star topology.

Answer: C

QUESTION NO: 95

Which of the following are right about the LAN? ( )

A. The LAN can adopt multiple transmission mediums, such as twisted pairs cable, optical fibers

or coaxial cable.

B. Compared to the WAN, LAN is more reliable in data transmission, and the error ratio is lower.

C. The most significant difference between LAN and WAN is bandwidth. LAN has a higher

bandwidth.

D. The most significant difference between LAN and WAN is the scope of area. LAN has a smaller

area.

Answer: A,B,D

QUESTION NO: 96

Which of the following should be provided for each leased line connection? ( )

A. Node switch

B. A router interface

C. CSU/DSU

D. Physical line

Answer: B,C,D

QUESTION NO: 97

Which of the following are right about the Stub area? ( )

A. You should configure as many Stub areas as possible.

B. External routes can not be propagated in the Stub area.


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C. There can not be any ASBR in the Stub area.

D. There can be one ASBR at most in the Stub area.

Answer: A,B,C

QUESTION NO: 98

Which of the following items should be considered when making network plan? ( )

A. Network topology designing

B. IP address planning

C. Analysis of the physical locations and the requirements of the customers

D. Network equipment deployment

E. Equipment purchase

Answer: A,B,C

QUESTION NO: 99

As QoS can be described by a series of measurable parameters, which of the following

parameters can be used to describe QoS? ( )

A. Service availability

B. Packet loss rate

C. Throughout

D. Delay, variable delay

Answer: A,B,C,D

QUESTION NO: 100

Which is the bandwidth of the E1 interface of the Quidway serial routers? ( )

A. 128Kbps

B. 155Mbps

C. 1.544Mbps

D. 2.048Mbps

Answer: D


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QUESTION NO: 101


In a small LAN, sometimes a 2 layers design model will take the place of the 3 layers design

model. Which of the following can be the reason for it? ( )

A. Such a network reduces the fault occurrence.

B. Only the 2 layers design model enables the implementation of the VLAN.C. Under the 2 layers design model, the equipment for the Convergence layer/Core layer does not

need to interconnect with each physical network.

D. Such a network costs less and is appropriate for a small network.

Answer: D

QUESTION NO: 102

Which of the following is a right description about the route loop in the RIP? ( )

A. The route loop can be resolved through setting the maximal hops.

B. The holder time may result in a slow convergence, but it can solve the route loop problem

thoroughly.

C. Given a topology diagram, the D-V algorithm can be sure to find the shortest path.

D. Split horizon can only eliminate the route loop between 2 routers.

Answer: D

QUESTION NO: 103

What role can routers usually play in the X.25 network? ( ).

A. PSE

B. None of the above

C. DCE

D. DTE

Answer: D

QUESTION NO: 104

Compared with bridges, what features do layer 2 switches have? ( )

A. Bridge forwarding is based on the hardware; while switched forwarding is based on the

software.


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B. Layer 2 switches have shorter delay.

C. Data switching is implemented at the higher layers of the OSI Reference Model.

D. Compared with bridge forwarding, switched forwarding is less flexible.

E. Both bridges and switches forward the data, but with different mechanism.

Answer: B,E

QUESTION NO: 105

Besides the dual-homing redundancy design, redundancy is also achieved by establishing the link

between the routers on the convergence layer. The difference is that there is only one link

between every router of the convergent layer and that of the core layer and the redundant link is

established between the routers in the convergence layer. Which of the following items are the

disadvantages of this design? ( )

A. The redundant link between the routers in the convergent layer may cause the routing flapping

in the convergence layer when the link is unstable. And all the branches of the convergent layer

may get this flapping so that the convergent time is added.

B. The data may be transmitted to the core layer through the redundant path.

C. The size of the routing table in the core layer is doubled.

D. To reach the router in the convergent layer, the router in the core layer chooses the redundant

path of the convergence layer rather than the path of the core layer.

Answer: A,B,D

QUESTION NO: 106

Which of the following are suitable for working in the core layer of a large network? ( )

A. Quidway R4001

B. Quidway NetEngine 16EC. Quidway R2630

D. Quidway NetEngine 80

Answer: B,D

QUESTION NO: 107

Which are right about the full duplex Ethernet? ( )

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