Practice Huawei Certified ICT Expert H12-891_V1.0 exam. Online Exam Practice Tests with detailed explanations! Pass H12-891_V1.0 with confidence!
H12-891_V1.0 - HCIE-Datacom V1.0 Practice Tests 2024 | Actualtests4sure
NEW QUESTION # 274
As shown in the figure, a company sets up an OSPF network. The links in the figure all form OSPF adjacencies, and all OSFP devices declare their own loopback addresses. One day SIR2 The two links of the S2AR1 suddenly failed, and in order to detect if the network was operating properly, the engineers performed a device status check, which is correct as described below
- A. R3 can not learn the loopback route to R2
- B. R1 can normally learn the loopback route
- C. R3 of R2 The loopback route of R2 can be learned normally
- D. R5 can normally learn the loopback route to R2
Answer: A,D
NEW QUESTION # 275
If a Huawei switch runs the RSTP protocol, when will the BPDUs on a port on the switch be aged?
- A. On the interface, RSTP does not age BPDU
- B. After Ma ge times out
- C. After Hello time times out
- D. after the Forward Delay timeout
- E. After more than 6 seconds
Answer: B
NEW QUESTION # 276
Which of the following is the benefit of VLAN aggregation?
- A. Implements isolation of broadcast domains between Sub-VLANs
- B. Increased number of available VLANs
- C. Increased flexibility in addressing
- D. Reduce the waste of IP addresses
Answer: A,C,D
NEW QUESTION # 277
XLAN uses BGP EVPN to establish a tunnel, what type of message is used? ( Single choice questions).
- A. Type2
- B. Type4E. Type5
- C. Typel
- D. Type3
Answer: D
NEW QUESTION # 278
Regarding the BGP alliance, the following description is wrong? Radio
- A. The subas number of the federation, which by default is advertised to the BGP peer outside the federation
- B. The consortium divides an AS into sub-AS, and the alliance external AS still considers the consortium to be an AS
- C. Subsystems within a consortium can use private AS numbers. Huawei NE/AR routers, a consortium can be configured with up to 32 subsystems.
- D. Consortium can easily detect the routing loop within the AS because EBGP is running between the subAS
Answer: A
NEW QUESTION # 279
What are the main reasons why RSTP converges faster than STP?
- A. RSTP has a smaller overhead
- B. RSTP increases the variety of port states
- C. RSTP does not converge based on timer
- D. RSTP has a smaller timer
Answer: C
NEW QUESTION # 280
Assume that BGP/MPLSIPVVPN, OSPF, LDP, and static routing protocols are already enabled on the PE router . Which of the following protocols need to enable GR on PE in order to get NSF functionality?
(Multiple choice questions).
- A. Static circuit
- B. MPLS LDP
- C. BGP
- D. OSPF
Answer: B,C,D
NEW QUESTION # 281
In EPIM-SM, the following description of the PIM Join message is correct?
- A. The upstream router sends a PIM Join acknowledgment in response to each PIM Join message received from the downstream router
- B. The PIM Join message is sent every 60 seconds to refresh the status of the upstream router mroute for the multicast tree
- C. PIM Join messages are sent every 3 minutes, and status
- D. PIM Join messages for the multicast tree are only sent when the multicast tree is first established
Answer: B
NEW QUESTION # 282
There is no routing protocol running on the router HW and only one default route reaches the remote network.
On the router job with the extension Ping remote file server address 105401. The result of Ping on the router job is presented as "Request time." out"? Based on the above description, the error in the following analysis is
?
- A. There is a firewall in the remote destination network, and no ICMP traffic is allowed
- B. Router HW does not have a legitimate route to the destination address
- C. Ping is successful, but congestion occurs on the path to the destination address
- D. ICMP packets can reach the destination address But the destination device failed to reply
- E. Router HW's next hop router does not have a path to the destination address
Answer: E
NEW QUESTION # 283
A company's two-layer phase network architecture as shown in the figure, when the engineer is configured to find that the business between departments can not communicate, through the command to view the status of the equipment as follows, please determine the possible causes?
- A. The Transition VLAN mapping between the handover machines is not configured to be caused
- B. Inconsistent Registry Name configuration between text exchange machines
- C. The BPDU interval between switches is not configured
- D. The Revislon Level configuration is inconsistent between switches
Answer: A,B,D
NEW QUESTION # 284
The following description of BGP ring protection is correct
- A. Any routing information from the IBGP peer is advertised to the other IBGP peers
- B. , through the AS-path attribute, discard any update information received from the EBGP peer that contains its own AS number in the AS-path attribute
- C. BGP routers that are not RR do not announce any updates from the IBGP peer to other IBGP peers
- D. The BGP router does not announce any updates from the EBGP peer to other EBGP peers
Answer: B,C
NEW QUESTION # 285
WRED is configured on the newly deployed router HW. What is the correct description of the WRED features below? (Multiple choice questions).
- A. Low-bandwidth traffic is easier to drop than high-bandwidth traffic
- B. WRED can set different drop thresholds and packet loss rates for packets of different priority
- C. Avoid global synchronization by selectively dropping multiple TCP streams
- D. When the flow exceeds the minimum threshold, WRED begins to discard all inlet flow (tail drop)
Answer: B,C
NEW QUESTION # 286
How do 8021w and 8021D handle BPDUs?( Confirmed) The
- A. The 8021D bridge does not forward BPDU messages
- B. 8021w Bridge does not forward BPDU packet
- C. 8021D bridge only forwards BPDU packets received from the root bridge
- D. The 8021w bridge forwards only BPDU packets received from the root bridge
Answer: C
NEW QUESTION # 287
The following statement about the NSSA area is correct (multiple choice).
- A. In the NSSA area where the OSPF neighbor sends hello packets, the N position 0, E within the option field Position 1
- B. In the OSPF neighbor in the NSSA region sends hello packets, position 1 within the option field , position E
- C. The NSSA zone must automatically generate a default LSA to access the external network
- D. The NSSA zone generates a Category VII LSA to advertise external routing, and the FA address in the Category VII LSA acts to prevent loops
Answer: B
NEW QUESTION # 288
As shown in the figure, the neighbor relationship between R1 and R2 has just been established, and the database synchronization process between R1 and R2 is correct.
- A. R1 to R2 is an LSP packet. The message sent by
- B. The message sent by R1 to R2 is a PSNP message
- C. R1 sends the packet of R2 as the CSNP packet. The message sent by
- D. R1 to R2 is the Hello message.
Answer: C
NEW QUESTION # 289
Which of the following options can affect the establishment of IBGP neighbors?
- A. BGP protocol version inconsistencies
- B. IGP routing is not passable
- C. Authentication is unsuccessful
- D. iBGP-Multi-hop is not configured
Answer: A,B,C
NEW QUESTION # 290
Which of the following scenarios send free ARP messages?( Multiple choice questions).
- A. When a host connected to the switch issues a Ping message.
- B. The DHCP client receives an acknowledgment message from the server after it sends it
- C. When a new host configured with an IP address is connected to the network
- D. After the VRRP protocol master and standby role election is completed
Answer: B,C,D
NEW QUESTION # 291
WRED is configured on the newly deployed router HW The following description of the WRED feature is correct as ?( Multiple select).
- A. When traffic exceeds the minimum threshold, WRED starts dropping all ingress traffic (tail drops).
- B. WRED can set different drop thresholds and packet loss rates for packets of different priority
- C. Avoid global synchronization by selectively dropping multiple TCP streams Low-bandwidth traffic is easier to drop than high-bandwidth traffic
Answer: B,C
NEW QUESTION # 292
If you run PIM-SM in a multicast network, you need to build a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive the multicast effect, so what are the following options for the correct tree sketch for the build?
- A. Built between the RPT tree
- B. RP and the receiver is built between the RPT tree
- C. What is built between the multicast source and the RP is the SPT tree
- D. RP and the swap is the SPT tree
Answer: B,C
NEW QUESTION # 293
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