Valid H12-831-ENU Exam Q&A PDF H12-831-ENU Dump is Ready (Updated 420 Questions)
Exam Questions and Answers for H12-831-ENU Study Guide
NEW QUESTION # 177
In BGP4+, what is the content of the next hop network address field carried by the AP_REACH_NLRI attribute in the Update message?
- A. Can be just a link-local address
- B. Can only be a global unicast address
- C. Can carry link-local addresses and global unicast addresses at the same time
- D. Only link-local addresses
Answer: C
NEW QUESTION # 178
Please match the OSPFv3LSA with its delivery range.
Answer:
Explanation:
NEW QUESTION # 179
In the vAR application scenario, which functions of the AR router can be virtualized on the server? (Multiple choice)
- A. VOIP
- B. Firewall
- C. NAT
- D. VPN
Answer: A,B,C,D
NEW QUESTION # 180
MPLS has always been slower than IP forwarding.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 181
Please match the command with the function implemented.
Answer:
Explanation:
NEW QUESTION # 182
An engineer uses 2 routers to test the IPV6 service, and runs the BGP4+ module to communicate with the branch. As shown in the figure, an engineer captures packets to view the Update message sent by R1. Which of the following statements is true about the description of the message information? (Multiple choice)
- A. Only one BGP attribute is described in this packet: multi-protocol unreachable NLRI attribute
- B. The next hop address of the route described in this packet is: 2001
- C. The maximum length before the routing address described in this packet is: 2001
- D. This packet describes the currently withdrawn IPv6 route
Answer: A,C,D
NEW QUESTION # 183
In order to advertise IPv6 routes in BGP4+, what fields are added in Update?
- A. A new path attribute: AP_UNREACH_NLRI
- B. A new NLRI type, IPv6 NLR
- C. A new path attribute: IPV6_REACH_NLRI
- D. A new path attribute: MP_REACH NLRI
Answer: D
NEW QUESTION # 184
In BGP/MPLS IP VPN, OSPF multi-instance process uses DN bits to prevent Type5 LSA loops.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 185
A park has deployed IPv6 for service testing. There are 4 routers (R1, R2, R3 and R4) in the network, running OSPFV3 to realize the interconnection of the IPv6 network. A new router R5 needs to be connected to the network for testing. An engineer introduces a direct route in the OSPFV3 process of R4 so that devices in the campus network can access the GE0/0/1 port address of R5.
Which of the following statements about the scene is true? (Multiple choice)
- A. R4 will generate a Type5 LSA describing the imported IPv6 routing prefix
- B. R2 will generate a Type4 LSA and only flood in Area 0
- C. R4 will generate a Type5 LSA and only flood in Area1
- D. R2 will generate a Type4 LSA describing the Router ID of R4
Answer: A,B,D
NEW QUESTION # 186
As shown in the figure, configure a backhaul summary route 10.0.0.0/24 on border route R1.
The next hop points to R2. At the same time, the default route to the external network is configured. At this point, routing black holes will appear. Which of the following statements about routing black holes is correct? (Multiple choice)
- A. Precise routing summary can avoid routing black hole
- B. If the terminal in the network sends data packets to the network segment that does not appear on the internal network, a loop will occur
- C. Configuring black hole routing can solve the routing black hole problem
- D. Routing black hole has no effect on the network and can be ignored
Answer: A,B,C
NEW QUESTION # 187
What can we infer from this graph? (Multiple choice)
- A. R1 has both level-1 and level-2 link status information
- B. The system-ID of R1 is ee8c.a0c2.bafl
- C. In a level-2 network, there are a total of 8 routers
- D. R1 only has level-2 link state information
Answer: B,D
NEW QUESTION # 188
Which of the following commands is used to configure VRRP preemption delay?
- A. vrrp vrid 1 timer delay 20
- B. vrrp vrid 1 preempt-delay20
- C. vrrp vrid 1 preempt-mode timer delay 20
- D. vrrp vrid 1 preempt-timer20
Answer: C
NEW QUESTION # 189
Which of the following belong to the delivery process of dry MPLS VPN routes? (Multiple choice)
- A. The process of injecting MP-BGP routes into VRF
- B. The process of VRF route injection into MP-BGP
- C. Route exchange between CE and PE
- D. Distribution process of public network labels
Answer: A,B,C,D
NEW QUESTION # 190
Which of the following statements about IS-IS (IPv4 6) is correct? (Multiple choice)
- A. Added TLV232236 to support IPv6 routing processing and calculation of IS-IS
- B. IS-IS works at the data link layer and only needs to add a new TLV to support IPv6
- C. By default, IS-IS enables the multi-topology feature
- D. In order to support the processing and calculation of IPv6 routes, IS-IS adds NLPID to 129 TLV
Answer: A,B,D
NEW QUESTION # 191
Regarding the description of the encapsulation format of labels in MPLS, which of the following is correct? (Multiple choice)
- A. The total length of a single MPLS label is 4 bytes (32bits)
- B. S field in the label is 1bit
- C. The TTL field in the label and the TTL (Time To Live) in the IP packet.
- D. For the packets of Ethernet and PPP, the label stack is located between the Layer 2 header and the data like the 'cushion layer': when there is a VLAN tag, the MPLS header is placed between the Ethernet header and the VLAN tag
Answer: A,C
NEW QUESTION # 192
Which of the following is not a preliminary preparation for the cutover plan?
- A. Cutover target
- B. Risk Assessment
- C. Existing network root description
- D. Field Defence
Answer: D
NEW QUESTION # 193
According to this figure, what can we judge? (Multiple choice)
- A. R1 has 6 IS-IS IPv6 routes
- B. The device type of R1 is definitely not Leve1-1
- C. GigabitEthernet0/0/1 of R1 must enable IS-IS IPv6
- D. R1 does not have IS-IS IPv6 routing
Answer: A,B,C
NEW QUESTION # 194
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. Bottom-up approach
- B. Block method
- C. Contrastive configuration method
- D. Segmentation
Answer: D
NEW QUESTION # 195
Which of the following sequences can be matched by the regular expression 100.S? (Multiple choice)
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B,D
NEW QUESTION # 196
The default MPLS label publishing mode, label distribution control mode and label retention mode of Huawei routers are:
- A. Label release method free method, label distribution control method independent method, label retention method downstream independent method
- B. Independent method of label release method, free method of label distribution control method, and downstream independent method of label retention method
- C. Label release method downstream independent method, the label distribution control method free method, the label retention method independent method.
- D. Label release method downstream independent method, label distribution control method independent method, label retention methodm free method
Answer: D
NEW QUESTION # 197
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