2021 H12-261-ENU dumps review - Professional Quiz Study Materials
H12-261-ENU Test Prep Training Practice Exam Questions Practice Tests
NEW QUESTION 103
Regarding route introduction, which of the following description is wrong?
- A. bgp supports both import and network when generating routes. Network mode is more accurate.
- B. By default, the default metric of the external route redistributed by OSPF is 1, and the imported external route type is Type2.
- C. Introducing IBGP routes in OSPF may cause routing loops.
- D. After the ISIS level-2 network route is imported to the level-1 route, the routing loop is formed if the import policy is not manually configured.
Answer: D
NEW QUESTION 104
Which of the following is not included in the digital certificate?
- A. Issuer
- B. Public key information
- C. Digital signature
- D. Digital envelope
Answer: D
NEW QUESTION 105
The topology diagram and configuration are as follows. Now I hope that there is no detailed routing entry of 10.6.3.3/32 in the R1 routing table. Which of the following statement can achieve this requirement? (Multiple choice)
- A. Configure route summarization on R3 and summarize the routes to 10.0.0.0/16.
- B. Configure filter-policy on R1, match 10.0.0.3.3/32 by ACL, and apply it in the import direction.
- C. Configure route summarization on R2 and summarize the routes to 10.0.0.0/16.
- D. Configure filter-policy on R2, match 10.0.3.3/32 by ACL, and apply it in the export direction.
Answer: A,B
NEW QUESTION 106
As shown in the figure, a part of LSP of the LSDB of a router is shown in the first line of the figure. First received a new LSP, the second hop is shown in the following picture, which of the following statement is wrong?
- A. The router will put the newly received LSP into the LSDB.
- B. If it is a broadcast network, the DIS will be in the next CSNP packet, including the summary Information of the LSP.
- C. If it is a point-to-point network, the router will send PSNP
- D. The router will ignore the LSP received from the neighbor.
Answer: D
NEW QUESTION 107
Configure AS-path-Filter ip as-path-filtr 10 permit_100$ means to match the route received from AS100.
- A. True
- B. False
Answer: B
NEW QUESTION 108
Use WRED to avoid congestion. Which of the following scenarios is better for deploying WRED?
- A. WRED randomly drops packets, the effect is not related to the scene.
- B. The main is TCP traffic in the network.
- C. The main is UDP traffic in the network.
- D. Deploy on low bandwidth links.
- E. Deploy on a serial link.
Answer: B
NEW QUESTION 109
Which of the following statements about RADIUS is correct?
- A. MAC authentication does not require a username and password, so you cannot use RADIUS to authenticate a user.
- B. RADIUS authentication and Portal authentication cannot be used together. Because Portal authentication is usually used, the Portal server can be used to authenticate users.
- C. RADIUS protocol authentication, authorization, and audit separation.
- D. RADIUS supports both wired and wireless access methods.
Answer: D
NEW QUESTION 110
A total of 6 bits indicating the priority field in the VLAN (802.1Q) data encapsulation
- A. True
- B. False
Answer: B
NEW QUESTION 111
Which of the following statements about the ISS protocol route aggregation is correct?
- A. Route aggregation can be configured and validated on all types of routers.
- B. Route aggregation can only be configured on the level--1-2 router to take effect.
- C. Route aggregation can only be configured on the level--1 router to take effect.
- D. Route aggregation can only be configured on the level--2 router to take effect.
Answer: A
NEW QUESTION 112
Which of the following descriptions are true about the establishment process of LDP LSP? (Multiple Choice)
- A. In the label publishing DoD mode, for a specific FEC, the LSR does not need to obtain the label request message from the upstream to perform label distribution and distribution.
- B. The process of establishing an LSP is actually the process of binding the FEC to the label and advertising the binding to the upstream LSR of the LSP.
- C. When the network topology changes cause the next hop neighbor to change, the LSR can directly reestablish the LSP by using the label sent by the original non-optimal next hop neighbor.
- D. By default, the LSR is for the same FEC. The received label mapping can only come from the optimal next hop. It cannot be from the non-optimal next hop.
Answer: A,B,C
NEW QUESTION 113
Assume that the BGP/MPLS IPv4 VPN of Static routing and OSPF, LDP are configured on the PE to enable the NSF function. Which of the following protocols are required to configure to enable the GR function on the PE? ( Multiple Choice)
- A. Static routing
- B. BGP
- C. OSPF
- D. MPLS LDP
Answer: B,C,D
NEW QUESTION 114
As shown in the figure, the IPSEC VPN is established between the branch and the headquarters using redundant links. At the same time, URPF is enabled on the traffic from the branch 1 on Router B.
Which of the following options is correct? (Multiple Choice)
- A. When using IPSEC backup link redundancy backup, URPF loose mode is recommended when the URPF function enables on the physical interface.
- B. When using IPSEC backup link redundancy backup, URPF strict mode can be used when URPF function enables on the physical interface.
- C. When using IPSEC multi-link redundancy backup, URPF strict mode can be used when URPF function enables on the physical interface.
- D. When using IPSEC multi-link redundancy backup, URPF strict mode can be used when URPF function enables on the tunnel interface.
Answer: A,D
NEW QUESTION 115
Enable SSM on the entire IP multicast network.
Which of the following statements about SSM are correct? (Multiple Choice)
- A. Only SPT is used for SSM.
- B. SSM is suitable for one-to-many application
- C. Only RPT is used for SSM.
- D. SSM is recommended when there are multiple sources on the network and multicast routing is simple.
- E. No RP is required.
Answer: A,B,E
NEW QUESTION 116
Which of the following statements about VXLAN messages is correct?
- A. The outer destination IP address is the IP address of the remote VTEP of the VXLAN tunnel.
- B. VNI has 24 bits and is used to distinguish VLAN segments.
- C. The source UDP port number is 4789
- D. Destination UDP port number is 4789
Answer: A,B,D
NEW QUESTION 117
Which of the following technologies use tunneling technology to communicate between IPv6 addresses?
- A. NAT64
- B. Dual Stack
- C. ISATAP
- D. 6to4
Answer: C,D
NEW QUESTION 118
The path selection tool can define multiple entries, which of the following tools will automatically generate and reject any entries at the end of the configuration? (Multiple Choice)
- A. Route policy
- B. AS-Path-filter
- C. IP-prefix
- D. Community -filter
Answer: A,B,C,D
NEW QUESTION 119
Regarding the certification of the ISIS protocol, which statements are correct? (Multiple Choice)
- A. Interface authentication can authenticate hello packets of Level-1 and Level-2.
- B. Two routers are configured for regional authentication and interface authentication. The passwords are the same, so the two can establish neighbor relationship.
- C. After the area authentication is configured, the IIH, SNP, and LSP sent by the router must be connected to the authentication TLV.
- D. After the interface authentication is configured, the IIH that the router sends must carry the authentication TLV.
Answer: A,D
NEW QUESTION 120
Regarding the BGP confederation, which of the following description is wrong?
- A. The confederation can easily detect the routing loop in the AS because EBGP is running between sub-ASs.
- B. The sub-AS number in the confederation can use a private AS number. A Huawei NE/AR router can be configured with up to 32 sub-AS numbers.
- C. The confederation divides an AS into several sub-ASs, and the external AS still considers the confederation to be an AS.
- D. The sub-AS number of the confederation is advertised to BGP peers outside the confederation by default.
Answer: D
NEW QUESTION 121
Which of the following is the access control method provided by NAC? (Multiple Choice)
- A. Web authentication
- B. AAA authentication
- C. 802.1X authentication
- D. MAC address authentication
Answer: A,C,D
NEW QUESTION 122
Router R1 runs the 0SPF protocol. Use the display ip routing-table command to view the routing table of the Router R1. Which of the following description is correct about the 0SPF information in the routing table?
- A. In the routing table, the routing entry identified by the "0SPF" identifier can only pass the LSA of class 1.
- B. In the routing table, the routing entries identified by the "0SPF" identifier can only be learned through the Type 3 LSA.
- C. In the routing table, the routing entries identified by the "0_ASE" identifier can only be learned through routing.
- D. In the routing table, the routing entries identified by the OSPF identifier can be learned through 1/2/3/5 LSAs.
Answer: C
NEW QUESTION 123
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