Verified H12-261-ENU dumps Q&As - Pass Guarantee Exam Dumps Test Engine [2021]
H12-261-ENU dumps and 525 unique questions
NEW QUESTION 115
Which of the following description about the OSPF virtual link is true?
- A. A virtual connection can be established in any area, and itself belongs to the area after it is established.
- B. The virtual link uses the outbound interface P as the link address.
- C. The virtual link can be used to solve the problem that area 0 is divided.
- D. The cost of the virtual link is the optimal link.
Answer: C
NEW QUESTION 116
Router HW is enabled with OSPF and the role of the router HW is ABR, and abr -surmnary is configured. Which classes of LSA will be aggregated? (Multiple Choice)
- A. Type 1 LSA
- B. Type 4 LSA
- C. Type 2 LSA
- D. Type 3 LSA
- E. Type 5 LSA
Answer: A,C
NEW QUESTION 117
ISIS does not send CSNP packets under the P2P network type during the neighbor establishment process.
- A. True
- B. False
Answer: B
NEW QUESTION 118
Which layers are shared in the OSI reference model and the TCP/IP model? (Multiple Choice)
- A. Expression layer
- B. Application layer
- C. Session layer
- D. Transport layer
- E. Data link layer
Answer: B,D
NEW QUESTION 119
When an administrator wants to manage some routes on the router during operation and maintenance, which of the following tools can mark these routes so that the administrator can configure the policy? (Multiple Choice)
- A. Use ip-prefix to mark routes on the router.
- B. If the BGP protocol is running, use the community attribute to mark the route.
- C. Use ACLs to mark routes on the router.
- D. Use Tag value to mark routes on the router.
Answer: B,D
NEW QUESTION 120
BGP 4+ runs between the two routers. The neighbor relationship is normal. However, the BGP routing table of the local router does not have neighbor's routing entry. What is the possible reason? (Multiple Choice)
- A. Peer ignore configured on the peer
- B. The next hop address of the BGP routing entry is unreachable.
- C. The routing entries of the peer BGP routing table are non-optimal.
- D. Active-route-advertise configured on the peer
Answer: B,C,D
NEW QUESTION 121
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 122
In the process of using the LACP protocol, which of the following description is correct? (Multiple choice)
- A. You can prevent the Eth-Trunk interface from frequently oscillating due to physical link by using the following command: interface eth-trunk 1 lacp preempt enable lacp preempt delay delay-time
- B. You can configure the source IP address for load balancing in the enabled link aggregation group by using the following command: interface eth-trunk 1 load-balance src-dst-ip
- C. You can remove a member interface in an enabled link aggregation group by using the following command: interface Gigabitethemnet0/0/0 shutdown interface Gigabitethernet0/0/1 undo eth-trunk 1 interface Gigabitetheret0/0/ undo shutdown
- D. You can add member interfaces to the enabled link aggregation group by using the following command: interface Gigabitethernet0/0/1 shutdown interface Gigabitethernet0/0/1 trunkport Gigabitethernet0/0/ interface Gigabitethernet0/0/1 undo shutdown
Answer: A,C
NEW QUESTION 123
Which of the following operations can implement fast fault detection on multicast network? (Multiple choice)
- A. Reduce the interval for sending Join/Prune messages.
- B. Establishing PIM BFD session between neighbors
- C. Reduce the interval at which the interface sends Hello messages.
- D. Shorten the Holdtime of Join/Prune messages
Answer: B,C
NEW QUESTION 124
IPSG can configure static binding table or use DHCP-snooping to form a binding table.
- A. True
- B. False
Answer: A
NEW QUESTION 125
Two EBGP neighbors connected by two parallel cables. What method will you use to achieve bidirectional load sharing between two EBGP neighbors connected through these two parallel serial cables?
- A. Configure the EBGP neighbor relationship with the loopback interface as the update source. The IGP in each AS must have two equal-cost paths to the EBGP neighbor loopback address. You need to use the command "next-hop-local".
- B. Configure the loopback interface to establish an EBGP neighbor relationship and configure EBGP Multi-hop. Configure the loopback interface as the update source, and then use IGP to implement equal-cost path load sharing between addresses.
- C. Configure the EBGP neighbor relationship with the loopback interface as the update source. The IGP in each AS needs to import two equal-cost paths to the EBGP neighbor loopback address. You need to use the commands ebgp-max-hop and next- Hop-local
- D. Use the command at both ends "ebgp-load-balance
- E. Without any method, BGP automatically implements load sharing between different autonomous systems on the available links.
Answer: B
NEW QUESTION 126
Which of the following options is correct for the assertion mechanism?
- A. In the assertion mechanism, winner is responsible for forwarding multicast data to the broadcast network segment.
- B. In the assertion mechanism, loser shut down the interface connected to the broadcast network.
- C. The size of the IP address will not be used as a condition for election during the election of the winner.
- D. The assertion mechanism is used for the election of the DR.
Answer: A
NEW QUESTION 127
When deploying LLQ, you need to configure bandwidth parameters. What is the meaning of bandwidth parameters?
- A. This parameter is an option because LLQ always takes precedence over other queues
- B. It indicates that the reference CR is used to calculate the burst size of the built-in tactical merging bucket.
- C. This parameter should be as small as possible. It means that the bandwidth is always reserved, even if LLQ is used, this parameter will reduce the available bandwidth of the interface.
- D. Provide a built-in policer to limit the maximum available bandwidth of low latency queues during congestion
Answer: D
NEW QUESTION 128
The interface Serial0 of an existing router is in OSPF area 1, and the interface Serial0 is set to the Silent interface, so what effect does this setting have?
- A. OSPF establishes available adjacencies through this interface.
- B. OSPF will receive routing updates from neighbors
- C. OSPF does not establish any adjacencies through the interface.
- D. OSPF does not add routes learned from the interface to the local routing table.
Answer: C
NEW QUESTION 129
As shown in the figure, in the IPv4 and IPv6 environment, the SEL field in the ISIS NET address always takes the value 00.
- A. True
- B. False
Answer: A
NEW QUESTION 130
In the case of not dividing the area, which of the following description is true about the link state routing protocol? (Multiple Choice)
- A. Routers in the entire flooding domain have the same wrong path state database
- B. The router will send all the wrong path status information sent by one neighbor to all other neighbors to ensure the synchronization of the database.
- C. Each router learns the route directly from the routing update and adds it to the routing table.
- D. Routers in the flooding domain may repeatedly receive the same link state information.
- E. Each router establishes a topological structure of the entire flood domain
Answer: A,D,E
NEW QUESTION 131
As shown in the figure, which of the following statement is correct? (Multiple Choice)
- A. If the R2 Ethernet 0/0/1 interface is down, the next hop of the route that R1 reaches 10.0.0.2 is changed to 10.0.12.2.
- B. If the R2 Ethernet0/0/0 interface is down, the next hop of the route that R1 reaches 10.0.0.2 is changed to 10.0.21.2.
- C. If the BFD function is disabled on R2, the BFD session of R1 will be down. It will cause OSPF neighbor relationship down.
- D. The OSPF status changes to FULL, which triggers the BFD session.
- E. If the R2 Ethernet 0/0/1 interface is down, the R1 BFD session can quickly detect the fault and notify R1 to make the OSPF neighbor relationship down.
Answer: D,E
NEW QUESTION 132
Which of the following are used in Ethernet networks? (Multiple Choice)
- A. 802.3 encapsulated frames
- B. Canonical format MAC addresses.
- C. 802.5 encapsulated frames.
- D. CSMA/CD for media access.
- E. Non-Canonical format MAC addresses.
Answer: A,B,D
NEW QUESTION 133
Mainstream second-tier technologies include VXLAN, TRILL, NVGRE and MPLS.
- A. True
- B. False
Answer: A
NEW QUESTION 134
The HW network consists of Network A and B that are connected via Router HW1 and Router HW2. The HW network is shown in the following exhibit.
To set up an IPSec VPN between routers HW1 and HW2, which of the following crypto access-lists must be configured on Router HW1 in order to send LAN to LAN traffic across the encrypted VPN tunnel?
- A. rule permit ip source 192.168.1.10 destination 192.168.1.2 0
- B. rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
- C. rule permit ip source 192.168.1.10 destination 10.1.2.0 0.0.0.255
- D. rule permit ip source 10.1.1.0 0.0.0.255 destination 192.168.1.2 0
- E. rule permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
Answer: B
NEW QUESTION 135
Which of the following statements about BGP attributes are correct?
- A. A path can only have one Community attribute value.
- B. The number of the neighboring AS is displayed on the right side of the As Path list of the BGP routing entry.
- C. The Local_Pref attribute is exchanged only between EBGP peers and is not advertised to the other ASs.
- D. When a route learned from an EBGP peer is advertised to an IBGP peer, the BGP speaker does not change the Next_Hop attribute of the route.
Answer: D
NEW QUESTION 136
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