H12-223 Free Exam Study Guide! (Updated 165 Questions)
H12-223 Dumps for HCNP-Routing&Switching Certified Exam Questions and Answer
NEW QUESTION 16
A local key pair must be configured for a device working as an SSH server.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 17
When a Huawei router serves as an SSH client and attempts to log in to another Huawei router, the login fails. It is suspected that the SSH server configuration is incorrect. Which of the following causes is the most impossible for the server fault?
- A. The SSH first-time authentication function is disabled.
- B. The user service type, authentication type, and user service type are not configured.
- C. The SSH server and client have inconsistent versions.
- D. The SSH protocol is not bound in the VTY user interface view.
Answer: A
NEW QUESTION 18
The structured network troubleshooting process is triggered by a fault report. The basic principle is to simplify troubleshooting by narrowing down or isolating all possible causes of a fault into several small subsets. In what sequence are structured network troubleshooting steps carried out? 1. Information collection 2. Fault identification 3. Cause list 4. Troubleshooting assessment 5. Fault analysis 6. One-by-one check 7. Fault rectification
- A. 2->l->5->3->4->6->7
- B. 2->l->3->5->6->4->7
- C. 1->2->3->6->4->5->7
- D. 1->2->3->6->5->4->7
Answer: A
NEW QUESTION 19
Which of the following are sources of network optimization requirements? (Multiple Choice)
- A. Replace severely aged signal cables in an ELV well.
- B. After long-term network maintenance, propose suggestions and improvements for centralized rectification.
- C. As the videoconferencing service is required on the network, add switching devices that support Layer 2 multicast.
- D. For enterprise information security, deploy new security devices.
Answer: A,B,C,D
NEW QUESTION 20
Which of the following aspects should be considered during preliminary analysis of a migration project?
(Choose three.)
- A. Necessity
- B. Costs
- C. Risks
- D. Feasibility
Answer: A,C,D
NEW QUESTION 21
When a Huawei router serves as an SSH client and attempts to log in to another Huawei router, the login fails. It is suspected that the SSH server configuration is incorrect.
Which of the following causes is the most impossible for the server fault?
- A. The SSH first-time authentication function is disabled.
- B. The user service type, authentication type, and user service type are not configured.
- C. The SSH server and client have inconsistent versions.
- D. The SSH protocol is not bound in the VTY user interface view.
Answer: A
NEW QUESTION 22
Which of the following networks are involved during construction of a large enterprise network?
- A. Wireless network
- B. Storage network
- C. Transport network
- D. Backbone network
- E. Data center network
Answer: A,B,C,D,E
NEW QUESTION 23
In the current Internet access market, carriers are promoting fiber to the home (FTTH). Which of the following technologies is mainly used by FTTH?
- A. GPON/EPON
- B. HFC
- C. xDSL
- D. FTTH
Answer: A
NEW QUESTION 24
Which of the following aspects should be considered for migration risk assessment?
- A. Loss caused by risks
- B. Risk impact scope
- C. Key risk positions
- D. Risk impact time
Answer: A,B,C,D
NEW QUESTION 25
Migration rollback is to restore the network state back before the migration.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 26
During MSTP troubleshooting, the display current-configuration command is executed to obtain the configuration file of the device.
Which of the following statements is false?
- A. Check whether the interface is added to the correct VLAN.
- B. The port connected to a user device has MSTP disabled or is configured as the edge port.
- C. Check the port configuration to verify that the MSTP-enabled port is configured (for example, using the bpdu enable command) to send protocol packets.
- D. The BPDU tunnel configuration has no impact on MSTP.
Answer: A
NEW QUESTION 27
To rectify a VRRP group two-master fault, run the display this command on VLANIF interfaces on both ends of the VRRP group. Which of the following operations is not performed?
- A. Check whether the interface IP addresses are on the same network segment.
- B. Check whether the VLANIF interfaces have the same VRRP group ID.
- C. Check whether the virtual IP address is the same on the VLANIF interfaces in the VRRP group.
- D. You do not need to check whether the interval for sending VRRP Advertisement packets is the same on the VLANIF interfaces.
Answer: D
NEW QUESTION 28
Which of the following causes may result in a BGP peer relationship fault?
- A. An ACL is configured to disable TCP port 179.
- B. The peer connect-interface command is not configured when loopback interfaces are used to establish the BGP peer relationship.
- C. The peer ebgp-max-hop command is not configured when loopback interfaces are used to establish the EBGP peer relationship.
- D. The peer router ID conflicts with the local router ID.
Answer: A,B,C,D
NEW QUESTION 29
Which of the following is the core idea of network troubleshooting?
- A. Information collection
- B. Determining and analysis
- C. Service traffic path check
- D. Top-down
Answer: B
NEW QUESTION 30
Ethernet supports broadcast. Once a network loop occurs, this simple broadcast mechanism will cause catastrophic consequences.
Which of the following symptoms may be caused by a loop?
- A. The CPU usage exceeds 70%.
- B. Users cannot log in to the device remotely.
- C. The display interface command output shows a large number of broadcast packets received on an interface.
- D. A lot of ICMP packets are lost in ping tests.
Answer: C
NEW QUESTION 31
During troubleshooting, you analyze and check the fault cause at the access layer, aggregation layer, and core layer in sequence. Which of the following troubleshooting methods is used in this process?
- A. Bottom-up
- B. Chunking
- C. Segmentation
- D. Configuration comparison
Answer: C
NEW QUESTION 32
Upon VRRP group flapping, the vrrp vrid timer advertise command is executed on the router to increase the interval for sending VRRP packets, and then the display vrrp command is executed repeatedly on the backup device to check the State field. It is found that the value of State remains unchanged. Which of the following statements regarding these operations is true?
- A. A large interval for sending VRRP packets may cause status flapping of the backup device.
- B. A small interval for sending VRRP packets may cause status flapping of the backup device.
- C. The fault cause is not found, and it takes time for the device to recover from the fault.
- D. Status flapping of the backup device is irrelevant to the interval for sending VRRP packets.
Answer: B
NEW QUESTION 33
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