無料H12-831-ENU試験ブレーン問題集認定ガイド問題と解答
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質問 # 206
Which of the following commands can be used to view information about BGP VPNV4 routes and BGP private network routes on PE?
- A. display bgp vpnv4 routing-table
- B. display bgp routing-table ipv4-family vpnv4
- C. display bgp routing-table address-family vpnv4
- D. display vpnv4 bgp routing-table
正解:A
質問 # 207
To speed up the detection of link failures in IS-IS networks, you can associate IS-IS with BFD.
- A. FALSE
- B. TRUE
正解:B
質問 # 208
DHCP Snooping is a DHCP security feature that can be used to defend against a variety of attacks, including ( ). (Multiple choice)
- A. Defense against man-in-the-middle attacks and IP/MAC Spoofing attacks
- B. Defense against TCP flag attacks
- C. Defense against DHCP spoofing attacks
- D. Defense against starvation attacks that change the CHADOR value
正解:A、C、D
質問 # 209
IEIF expands the functions of OSPF by taking advantage of the strong expansibility of OSPF. To enable it to support IPv6 networks, the expanded protocol is called OSPFv3, and OSPFv3 is compatible with OSPFv2.
- A. TRUE
- B. FALSE
正解:B
質問 # 210
Deploying port isolation technology in Ethernet can realize Layer 2 intercommunication and Layer 3 isolation, making networking more flexible.
- A. TRUE
- B. FALSE
正解:B
質問 # 211
As shown in the figure, Client1 and Client2 serve as clients of RR1 and RR2 at the same time. RR1 and RR2 are in the same Cluster, and R1 has entered 10 routes. It is assumed that BGP is configured correctly.
All neighbor relationships have been established. How many routing entries exist in the BGP routing table of Client2?
- A. 0
- B. 1
- C. 2
- D. 3
正解:A
質問 # 212
The OSPF protocol is run between CE and PE, when CE1 advertises the route of this site to CE2. Which of the following descriptions is incorrect?
- A. The Domain ID configured on PE can be used as the extended community attribute of BGP and sent to PE2 along with the route
- B. When PE2 receives a BGP route from PE1 with a different Domain ID than the local one, it is correct for all LSAs
- C. When PE2 receives the BGP route sent by PE1 and carries the same Domain ID as the local one, for Type1LSA and Type2LSA
- D. When PE2 receives the BGP route sent by PE1 and carries the same Domain ID as the local one, the Type3LSA
正解:D
質問 # 213
In order to advertise IPv6 routes in BGP4+, what fields are added in Update?
- A. A new path attribute: IPV6_REACH_NLRI
- B. A new path attribute: MP_REACH NLRI
- C. A new path attribute: AP_UNREACH_NLRI
- D. A new NLRI type, IPv6 NLR
正解:B
質問 # 214
As shown in the figure, OSPF is deployed in a campus, and Area1 is deployed as an NSSA area. By default, R2 will automatically generate a default route of Type7 LSA and flood it in the NSSA area.
- A. FALSE
- B. TRUE
正解:B
質問 # 215
Network administrator A wants to view the neighbor status of BGP router R2. The BGP neighbor status information of R2 is shown in the figure. Please help network administrator A to obtain the following information: The AS where R2 is located is AS ( ). (write only numbers, do not add punctuation or spaces)
- A. 102
正解:A
質問 # 216
In the VLAN aggregation technology, multiple Sub-VLANs are used to isolate the wide recruitment area, and these Sub-VLANs are aggregated into a logical Super-VLAN. A company divides different departments into different Sub-VLANs, because Sub-VLANs It not only includes physical connection, but also can establish a three-layer VL ANIF interface, which can directly communicate with the external network at three-layer.
- A. True
- B. False
正解:B
質問 # 217
What is the value of the linkage between OSPF and BFD?
- A. Any change in BFD state will not affect OSPF neighbor state
- B. The sending interval of BFD packets can reach the millisecond level, which is slower than OSPF sensing link status
- C. BFD detected at the millisecond level
- D. The hello sending interval of OSPF is in seconds, which is faster than BFD sensing link status
正解:C
質問 # 218
The routing policy tools that BGP can use mainly include Filter-policy and Route-policy. Filter-policy can only filter routes, and Route-policy can only modify routes.
- A. True
- B. False
正解:B
質問 # 219
In the MPLS forwarding process, which descriptions are correct about the forwarding of the ingress node? (Multiple choice)
- A. After receiving the data packet, the Ingress node recycles the ILM table first and finds the Tunnel ID
- B. View the NHLFE entry, you can get the outgoing interface, next hop, outgoing label and label operation type, the label operation type is Push
- C. Find the corresponding NHLFE entry according to the Tunnel ID of the ILM table and associate the LFIB with the NHLFE entry
- D. Press the obtained label into the IP packet, and process the EXP and TTL according to the QoS policy
正解:B、D
質問 # 220
As shown in the figure, a sham link is established between PE1 and PE2 through the LoopBack0 interface. CE2 can learn the route of network segment 192.168.1.0/24 (the direct route on CE1) through the sham link and the backdoor link. If the default configuration is maintained, the cost of the route from CE2 to network segment 192.168.1.0/24 should be ( ). (Please fill in the Arabic numerals directly, without symbols)
- A. 4
正解:A
質問 # 221
OSFFv2 is an IGP running on an IPv4 network, and OSPFV3 is an IGP running on an IPv6 network. Compared with OSPFv2, OSPFv3 has a similar LSA type, but has slightly different functions. Which of the following is not included in the LSA type of OSPFv3?
- A. Router-LSA
- B. AS-External-LSA
- C. ASBR-Summary-LSA
- D. Network-LSA
正解:C
質問 # 222
As shown in the figure, the MP BGP neighbor relationship is established between PE1 and PE2 through the Loopback0: interface. After the configuration is completed, it is found that CE1 and CE2 cannot learn routes from each other. Which of the following options will cause this problem? (Multiple choice)
- A. The LSP tunnel between PE1 and PE2 is not established
- B. PE1 or PE2 do not have neighbors enabled in the BGP-VPNv4 unicast address family view
- C. The routing protocol configuration between PF1 or PE2 and the respective CE is incorrect
- D. The VPN instance parameters on PE1 or PE2 are incorrectly configured
正解:A、B、C、D
質問 # 223
As shown in the figure, the entire network of a company uses OSPF to open up the network. However, RouterS and RouterE cannot establish an OSPF neighbor relationship. When network administrators detect OSPF faults, they can run the display ospf ( ) 1000 interface GE0/0/1 command on RouterS to obtain information about the errors. Users can perform OSPF fault diagnosis based on the information. (Please use English lowercase letters to complete the command, and the command cannot be abbreviated)
- A. error
正解:A
質問 # 224
When troubleshooting network faults, you judge and eliminate the root cause of the problem layer by layer in the order of access layer, aggregation layer, and core layer. Which of the following is this method of network troubleshooting?
- A. Segmentation
- B. Bottom-up approach
- C. Block method
- D. Contrastive configuration method
正解:A
質問 # 225
What is the meaning of the display current-configuration I include vlan command?
- A. View the IP address of the VLANIF interface
- B. Check which VLANs are currently created
- C. View all configurations that contain the \VLAN\ keyword
- D. View the physical interface information bound under each VLAN
正解:C
質問 # 226
R1 performs operation ping-a 10.1.1.1 10.5.16.2, what is the meaning of this command?
- A. The source IFP address of the ping packet is the outgoing interface address of the optimal IP route of R1 pointing to 10.5.16.2, and not 10.1.1.1
- B. The source IP address of the ping packet is any directly connected interface address of R1
- C. The source IP address of the ping packet is 10.1.1.1
- D. The destination IP addresses of the ping packets are 10.1.1.1 and 10.5.16.2
正解:C
質問 # 227
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