السؤال #1

Assuming that the neighbor relationship between BGP routers has been established successfully, the configuration on R1 is as shown in the figure. Which router can the routing entry 10.10.10.0/24 published by 1 be delivered to the farthest?

A. R1

B. R2

C. R3correct

D. R4

عرض الإجابة

اجابة صحيحة: C

السؤال #2

A network engineer captured a multicast data frame whose destination MAC address is 01-00-5e-00-01-01. Based on this analysis, which of the following cannot be the destination IPv4 address?

A. 224

B. 224

C. 225

D. 239

عرض الإجابة

اجابة صحيحة: A

السؤال #3

In the network shown in the figure, R1 and R2 are configured with single-hop BFD detection. The network engineer found that the BFD session was Down, so he queried the configuration related to R1 and R2 BD. The configuration information has been marked in the figure. According to the configuration information, the reason for the BFD session Down is that the time parameters configured on R1 and R2 do not match.

A. True

B. Falsecorrect

عرض الإجابة

اجابة صحيحة: B

السؤال #4

About the difference between NSR and NSF, which is correct?

A. NSFCan be done without neighbor routers

B. NSRMust rely on neighbor routers to complete

C. NSFMust rely on neighbor routers to complete

D. NSRandNSFBy6Requires neighbor router to complete

عرض الإجابة

اجابة صحيحة: C

السؤال #5

An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. As shown in the figure, an engineer captures the packet to view the update message sent by R1. Regarding the description of the message information, which of the following statements is correct?

A. The next-hop address of the route described in this message is: 2001:db8::2345:1

B. The message describes the currently revoked IPv6 route

C. The routing address prefix and its prefix length described in this message are: 2001:db8:2345:1::1/128/

D. The route described in the message may be imported through import

عرض الإجابة

اجابة صحيحة: C

السؤال #6

According to this figure, we can judge:

A. R1 is configured with zone authentication

B. The device type of R1 is Level-1

C. The device type of R1 is Leve-2correct

D. R1 sets routing domain authentication

عرض الإجابة

اجابة صحيحة: C

السؤال #7

A network engineer discovered that a link failure alarm frequently appeared on the interface of a certain device. The interface is an Ethernet optical port. Which of the following commands can the network engineer use to check the transmit and receive optical power of the interface?

A. display alarm all

B. display pon-transceiver

C. display transceivercorrect

D. display temperature

عرض الإجابة

اجابة صحيحة: C

السؤال #8

The MPLS architecture consists of the control plane and forwarding plane, each of which contains multiple protocols and entries. Which of the following tables is used to forward MPLS labeled packets? Options:

A. FIB

B. RIB

C. LIB

D. LFIB

عرض الإجابة

اجابة صحيحة: D

السؤال #9

As shown in the figure, Site1 and Site2 need to achieve mutual access through the operator's BGP/MPLS IPVPN. It is known that the public network tunnel between PE1 and PE2 has been established (the label information is shown in the figure), and PF1 has advertised the 192.168.1.0/24 network segment route in Site1 to PE2 through the MP.JIBGP neighbor relationship, and the route learning is normal. When capturing the data that Site2 visits the 192.168.1.0/24 of Site1 between P and PE1, what should be the outer

A. 661

B.

C. 662

D. 888

عرض الإجابة

اجابة صحيحة: A

السؤال #10

In the OSPFv3 network shown in the figure, area 1 is an NSSA area. R1 imports the external route 2000::1/128 into OSPFv3. What types of LSAs are in area 0 by default? (Multiple choice)

A. Link-LSAcorrect

B. Inter-Area-Router-LSA

C. Inter-Area-Prefix-LSAcorrect

D. Intra-Area Prefix-LSAcorrect

عرض الإجابة

اجابة صحيحة: ACD

السؤال #11

In the OSPFv3 network shown in the figure, the IPv6 address of R3 Loopback0 interface is 2000::3/128, and OSPFv3 is enabled. Which of the following descriptions are correct? (Multiple choice)

A. R2 will definitely generate a Link-LSAcorrect

B. R1 will definitely generate a Network-LSA

C. R3 will definitely generate an Intra-Area-Prefix-LSAcorrect

D. The Link-LSA generated by R2 will not appear in R1's LSDBcorrect

عرض الإجابة

اجابة صحيحة: ACD

السؤال #12

A campus deploys OSPF to achieve network interoperability. An engineer configures R2 as shown in the figure. Which of the following description of LSAs in the OSPF network is wrong? [R2] acl 2000 [R2-acl-basic-2000] rule deny [R2-acl-basic-2000] quit # [R2] ospf [R2-ospf-1] area 1 [R2-ospf-1-area-0.0.0.1] filter 2000 import [R2-ospf-1-area-0.0.0.1] quit [R2-ospf-1] default-route-advertise always

A. There is Type5 LSA flooding in Area2

B. There is no Type3 LSA flooding in Area2

C. There is Type5 LSA flooding in Area1

D. There is no Type3 LSA flooding in Area1correct

عرض الإجابة

اجابة صحيحة: D

السؤال #13

What fields are added in Update in order to advertise IPv6 routes in BGP4+.

A. a new oneNLRITypes of"Pv6_NLR,which carryIPv6 NLRI prefix lengthandIPv6 NLRI prefix

B. A new path attribute:MP_UNREA, CH_NLRI

C. A new path attribute:MP_REA, CH_NLRI

D. a new path attribute:IPv6_REA, CH_NLRI

عرض الإجابة

اجابة صحيحة: C

السؤال #14

A network engineer captured a multicast data frame whose destination MAC address is 01-00-5e-00-01-01. Based on this analysis, which of the following cannot be the destination IPv4 address?

A. 224

B. 224

C. 225

D. 239

عرض الإجابة

اجابة صحيحة: A

السؤال #15

As shown in the figure, an enterprise hopes to achieve secure mutual visits between the headquarters and branches, as well as business isolation between the R&D area and the non-R&D area without changing the network deployment. To meet this requirement, the administrator deploys BGP/MPLS IP VPN in the network. Which of the following descriptions of this scenario are correct? (Multiple choice)

A. To achieve mutual access between the headquarters and the branch R&D area, you can set the ERI and IRT of VPN1 and VEN2 to 10

B. Since the address space of the R&D area and the non-R&D area overlap, it is impossible to isolate the business of the two areas

C. To isolate the R&D area and non-R&D area of the headquarters, you can set the RT value of VPN1 to 100:100 and the RT value of VPN3 to 200:200

D. To achieve mutual access between the headquarters and the branch R&D area, the RD values of VPN1 and VFN2 need to be set to the same value

عرض الإجابة

اجابة صحيحة: AC

السؤال #16

A network engineer wants to clear the serial port login password.

A. 5

B. 3

C. 6correct

D. 4

عرض الإجابة

اجابة صحيحة: C

السؤال #17

Which of the following statements about IPSG is false?

A. IPSG can prevent IP address spoofing attacks

B. IPSG is a source IP address filtering technology based on Layer 3 connectioncorrect

C. The IPSG can enable the IP packet inspection alarm function, and link the network management to alarm

D. IPSG can prevent the host from changing the IP address privately

عرض الإجابة

اجابة صحيحة: B

السؤال #18

In the networking shown in the figure, R1 and R2 cannot establish an EBGP neighbor relationship through the directly connected interface. The network engineer first checked the BGP-related configurations of R1 and R2, and determined that the reason why R1 and R2 cannot establish an EBGP neighbor relationship is that the Router ID and the interface IP address are inconsistent.

A. True

B. Falsecorrect

عرض الإجابة

اجابة صحيحة: B

السؤال #19

As shown in the figure, R1 to R4 are four routers in AS123. They all run OSPF to implement route reachability within the AS. Network segments 10.1.1.0/24 and 10.4.4.0/24 are not advertised into OSPF. R1 and R4 establish an IBGP peer relationship using Loopback0 and advertise network segments 10.1.1.0/24 and 10.4.4.0/24 into BGP. Which of the following methods can be used to implement communication between PC1 and PC2? Options:

A. ADeploy policy-based routing on R1 and specify R2 as the next hop for traffic from PC1 to PC2

B. BDeploy MPLS and LDP on R1 to R4 and establish LSPs for routes 1

C. CRun BGP on R2 and R3, and establish full-mesh IBGP connections in AS 123

D. DOn R1 and R4, import routes 10

عرض الإجابة

اجابة صحيحة: CD

السؤال #20

In the enterprise network shown in the figure, R3 is connected to the enterprise network management server, and all devices in the network communicate with the network management server through VPN. During the inspection, it was found that R3 had redundant RT configurations. Which of the following commands can be executed on R3 to delete the redundant RTs without affecting the connectivity of all devices and the network management server? (Multiple choice)

A. undo vpn-target 1:3 import-extcommunitycorrect

B. undo vpn-target 3:1 import-extcommunitycorrect

C. undo vpn-target 1:3 export-extcommunitycorrect

D. undo vpn-target 2:3 export-extcommunitycorrect

عرض الإجابة

اجابة صحيحة: ABCD

السؤال #21

To speed up the detection of link failures in IS-IS networks, you can associate IS-IS with BFD.

A. TRUEcorrect

B. FALSE

عرض الإجابة

اجابة صحيحة: A

السؤال #22

The MPLS label is a 20-bit local identifier. When the administrator configures a static LSP, the incoming label and outgoing label can be manually specified. The value range is 0~1048575.

A. True

B. Falsecorrect

عرض الإجابة

اجابة صحيحة: B

السؤال #23

Part of the configuration of R1 is as follows. Which statement about OSPF on R1 is correct?

A. The device type of R1 is Leve-2

B. The device type of R1 cannot be determined

C. The device type of R1 is Level-1

D. The device type of R1 is Level-1-2correct

عرض الإجابة

اجابة صحيحة: D

السؤال #24

As shown in the figure, MPLS/BGP IPVPN is deployed in the network, and the MP-BGP neighbor relationship is established between PE1 and PE2 through the Loopback0 interface. After the configuration is complete, it is found that CE1 and CE2 cannot learn routes from each other. Use the command on PE2 Looking at the neighbor information as shown, what is the most likely cause of the problem?

A. The VPN instance parameters on PE1 or PE2 are incorrectly configured

B. PE1 and PE2 do not have bell neighbors enabled in the BGP-VPN4 unicast address family viewcorrect

C. The LSP tunnel between PE1 and PE2 is not established

D. Misconfiguration of routing protocols between PE1 or PE2 and their respective CEs

عرض الإجابة

اجابة صحيحة: B

السؤال #25

Network maintenance can be divided into two categories: daily maintenance and troubleshooting. If the maintenance personnel have a high level of technical skills, they can maintain the network based on experience without following operating specifications.

A. True

B. Falsecorrect

عرض الإجابة

اجابة صحيحة: B

السؤال #26

On the 05PFv3 network shown in the figure, each interface of R1 and R2 has two IPv6 addresses. Although the IPv6 address prefixes of R1 and R2 are different, they can still be used to establish an OSPFv3 neighbor relationship. If R2 is the DR, the Intra-Area-Prefix-LSA generated by R2 contains four prefixes.

A. TRUE

B. FALSE

عرض الإجابة

اجابة صحيحة: A

السؤال #27

There are many types of MAC address entries on the switch. Which of the following types are manually configured by the user and cannot be aged? (Multiple choice)

A. Blackhole MAC address tablecorrect

B. MUX MAC address table

C. Dynamic MAC address table

D. Static MAC address tablecorrect

عرض الإجابة

اجابة صحيحة: AD

السؤال #28

As shown in the figure, OSPF is enabled on all interfaces of the router. The ip address marked in the figure is the IP address of the loopback0 interface. The Loopback0 of R1, R2, and R3 is advertised in area 1, and the Loopback0 of R4 is advertised in area 0, Loopback0 of R5 announces which of the following functional addresses in area 2 can ping each other?

A. 10

B. 10

C. 10

D. 10

عرض الإجابة

اجابة صحيحة: C

السؤال #29

When troubleshooting a network, if you need to confirm the business traffic path, which of the following may need to be done ()

A. Confirm data link layer service traffic path

B. Confirm the network layer service traffic path

C. Investigate service traffic path planning in the network design phase

D. Confirm the frequency of failure

عرض الإجابة

اجابة صحيحة: ABC

السؤال #30

According to this diagram, can we break the

A. system-IDforee8c

B. system-IDforee8c

C. R4belong only toLevel-1

D. R4dry onlyLevel2

عرض الإجابة

اجابة صحيحة: BC

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