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NEW QUESTION # 110
According to this picture, what can we judge? (Multiple choice)
- A. There are 4 equivalent paths for R1 to access 172.16.1.4
- B. There are 2 equivalent paths for R1 to access 172.16.1.4
- C. R1 access to 172.16.1.4 requires a 2-hop router
- D. R1 access to 172.16.1.4 requires a 4-hop router
Answer: B,C
NEW QUESTION # 111
In the network shown in the figure, PC1 and PC2 are required to belong to the same VLAN, but cannot communicate at Layer 2. Which of the following technologies can be used to achieve this?
(Multiple choice)
- A. MUX VLAN technology, put PC1 and PC2 into the same Group WAN
- B. VLAN aggregation technology, putting PC1 and PC2 into the same Sub-VLAN
- C. Port isolation technology: add the GE0/0/1 and GE0/0/2 ports of the Switch to the same port isolation group.
- D. NUX VLAN technology, put PC1 and PC2 into the same Separate VLAN
Answer: C,D
NEW QUESTION # 112
As shown in the figure, the network administrator deployed the DHCP Snooping trust function on the switch, where GE0/0/2 is the trusted interface and GE/0/3 is the untrusted interface.
Which of the following descriptions of these two interfaces are correct? (Multiple choice)
- A. When the switch receives a DHCP response message from port GE0/0/3, it forwards the message from port GE0/0/1.
- B. When the switch receives a DHCP request message from port GE0/0/2, it forwards the message from port GE0/0/3.
- C. When the switch receives a DHCP response message from port GE0/0/2, it forwards the message from port GE0/0/1.
- D. When the switch receives a DHCP request message from port GE0/0/3, it forwards the message from port GE0/0/2.
Answer: B,C,D
NEW QUESTION # 113
ping -a X-c Y-s z -vpn-instance M 10.5.16.2, what is the meaning of this command? (Multiple choice)
- A. The ICMP request of the ping, the packet size is Z (excluding IP and ICMP header)
- B. The ping sends Y ICMP requests
- C. The source IFP address of the ping packet is X
- D. The ping packet belongs to VPN instance M
Answer: A,B,C,D
NEW QUESTION # 114
The LSP fast diffusion feature can speed up the diffusion of LSP. Under normal circumstances, when IS-IS receives an LSP from another router, if this LSP is newer than the corresponding LSP in the local LSDB, it updates the LSP in the LSDB and uses a timer to periodically diffuse the updated LSP in the LSDB. When a device with the LSP fast diffusion feature enabled receives one or more newer LSPs, it diffuses LSPs less than the specified number before route calculation to speed up the synchronization process of the LSDB.
- A. False
- B. True
Answer: B
NEW QUESTION # 115
As shown in the figure, all interfaces of the router enable OSPF, and the configurations of R1, R2, and R3 are as shown in the figure, then () will generate a Type 3 LSA with a linkState ID other than 0.0.0.0. (Please fill in the device name, such as R1)
Answer:
Explanation:
R3
NEW QUESTION # 116
On the network shown in the figure, the network administrator deploys DHCP snooping on the switch to defend against bogus DHCP server attacks.
Which of the following interfaces should be configured as the DHCP trusted interface?
- A. GE0/0/1
- B. GE0/0/4
- C. GE0/0/3
- D. GE0/0/2
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
Understanding DHCP Snooping and Trusted/Untrusted Ports
1. What is DHCP Snooping?
* DHCP Snooping is a security feature that prevents rogue DHCP servers from providing unauthorized IP configurations to clients.
* It categorizes switch ports into:
* Trusted Ports: Allow DHCP Offer and ACK messages from a legitimate DHCP server.
* Untrusted Ports: Block unauthorized DHCP responses to prevent rogue DHCP attacks.
Analyzing the Network Setup in the Figure
Interface
Connected Device
DHCP Role
Should it be Trusted?
GE0/0/1
PC1 (DHCP Client)
Requests DHCP leases
# Untrusted
GE0/0/2
DHCP Server (Legitimate)
Provides DHCP leases
# Trusted
GE0/0/3
Web Server
Not involved in DHCP
# Untrusted
GE0/0/4
Bogus (Rogue) DHCP Server
Malicious DHCP Server
# Untrusted & Blocked
* GE0/0/2 is connected to the legitimate DHCP server, meaning it should be marked as a TRUSTED interface.
* GE0/0/4 connects to a bogus DHCP server, which must be UNTRUSTED to block unauthorized DHCP responses.
* GE0/0/1 (Client) and GE0/0/3 (Web Server) do not need to be trusted.
# Thus, the correct answer is: D. GE0/0/2.
Final Conclusion:
# GE0/0/2 should be configured as the trusted DHCP interface.# GE0/0/1 (Client) should remain untrusted.# GE0/0/3 (Web Server) does not need DHCP trust.# GE0/0/4 (Bogus DHCP Server) should be blocked.
Thus, the correct answer is: D. GE0/0/2.
NEW QUESTION # 117
Generally, large-scale and important cutover projects require setting up an environment in the laboratory for advance verification, which is called laboratory testing. Successful laboratory testing means that the cutover plan is feasible and there is no need to meet with the customer for review.
- A. True
- B. False
Answer: B
NEW QUESTION # 118
The figure shows the debugging information on an OSPF router. Which of the following is the router ID of this router?
- A. 10.0.1.1
- B. 10.0.12.2
- C. 10.0.12.1
- D. 10.0.2.2
Answer: D
NEW QUESTION # 119
In the figure, an administrator needs to enable MPLS LDP on R1 to R4. Which of the following configurations of R1 is correct?
- A. [R1] mpls lsr-id 1.1.1.1
[R1] mpls
[R1-mpls] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls
[R1-GigabitEthernet0/0/1] mpls ldp
[R1-GigabitEthernet0/0/1] quit - B. [R1] mpls lsr-id 1.1.1.1
[R1] mpls
[R1-mpls] quit
[R1] mpls ldp
[R1-mpls-ldp] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls
[R1-GigabitEthernet0/0/1] mpls ldp
[R1-GigabitEthernet0/0/1] quit - C. [R1] mpls
[R1-mpls] quit
[R1] mpls ldp
[R1-mpls-ldp] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls
[R1-GigabitEthernet0/0/1] mpls ldp
[R1-GigabitEthernet0/0/1] quit - D. [R1] mpls lsr-id 1.1.1.1
[R1] mpls
[R1-mpls] quit
[R1] mpls ldp
[R1-mpls-ldp] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls
[R1-GigabitEthernet0/0/1] quit
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
To determine the correct configuration, we need to analyze how MPLS LDP (Label Distribution Protocol) is correctly enabled on a Huawei router.
1. Required Steps to Enable MPLS LDP on R1
To enable MPLS LDP on R1 and establish LDP sessions, the following steps must be followed:
# Step 1: Configure the MPLS LSR ID (Loopback IP recommended)
* MPLS LSR ID is a unique identifier for the Label Switch Router (LSR).
* Command:
shell
CopyEdit
mpls lsr-id 1.1.1.1
* Why?
* The LSR ID must be configured for LDP to function properly in an MPLS network.
* It is usually set to a loopback address for stability and consistency.
# Step 2: Enable MPLS Globally
* Command:
shell
CopyEdit
mpls
* Why?
* This enables MPLS forwarding on the device.
# Step 3: Enable MPLS LDP Globally
* Command:
shell
CopyEdit
mpls ldp
* Why?
* LDP is needed for label distribution in the MPLS domain.
* Without this, routers cannot exchange MPLS labels.
# Step 4: Enable MPLS and LDP on the Required Interface
* Command:
shell
CopyEdit
interface gigabitethernet 0/0/1
mpls
mpls ldp
* Why?
* MPLS must be enabled on interfaces that participate in MPLS forwarding.
* LDP must also be enabled on these interfaces to distribute labels over MPLS links.
2. Analyzing the Answer Choices
# Option B (Correct)
shell
CopyEdit
[R1] mpls lsr-id 1.1.1.1 # (Sets LSR ID)
[R1] mpls # (Enables MPLS globally)
[R1-mpls] quit
[R1] mpls ldp # (Enables LDP globally)
[R1-mpls-ldp] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls # (Enables MPLS on interface)
[R1-GigabitEthernet0/0/1] mpls ldp # (Enables LDP on interface)
[R1-GigabitEthernet0/0/1] quit
* This configuration correctly enables MPLS LDP on R1.
* All required steps are followed, including the LSR ID, MPLS, LDP, and interface activation.
# Option A (Incorrect)
shell
CopyEdit
[R1] mpls lsr-id 1.1.1.1
[R1] mpls
[R1-mpls] quit
[R1] mpls ldp
[R1-mpls-ldp] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls #
[R1-GigabitEthernet0/0/1] quit # (Missing "mpls ldp" under interface)
* Missing mpls ldp under interface configuration.
* Without this, the interface will not establish an LDP session # Incorrect.
# Option C (Incorrect)
shell
CopyEdit
[R1] mpls
[R1-mpls] quit
[R1] mpls ldp
[R1-mpls-ldp] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls
[R1-GigabitEthernet0/0/1] mpls ldp
[R1-GigabitEthernet0/0/1] quit
* Missing mpls lsr-id 1.1.1.1.
* LSR ID is critical for LDP sessions # Incorrect.
# Option D (Incorrect)
shell
CopyEdit
[R1] mpls lsr-id 1.1.1.1
[R1] mpls
[R1-mpls] quit
[R1] interface gigabitethernet 0/0/1
[R1-GigabitEthernet0/0/1] mpls
[R1-GigabitEthernet0/0/1] mpls ldp
[R1-GigabitEthernet0/0/1] quit
* Missing global MPLS LDP configuration (mpls ldp).
* Without enabling LDP globally, labels will not be distributed.
* This makes LDP sessions fail. # Incorrect.
NEW QUESTION # 120
OSPF is deployed in a campus to achieve network interworking, and OSPF is also enabled on the GEO/0/2 interface of R3. Area1 is deployed as an NSSA area, and the device addresses are shown in the figure. An engineer configures a static route on R3 to access the loopback interface address of R4, and imports the static route in the 0SPF process. At this point, in the Type5 LSA received by R1, the forwarding address (FA) is____. (Note: Please fill in the IP address without mask)
Answer:
Explanation:
(10.1.23.2)
NEW QUESTION # 121
In the OSFFV3 network shown in the figure, there are () Link-LSAs in R2's LSDB.
Answer:
Explanation:
3
NEW QUESTION # 122
The Router ID of R1 is 10.0.1.1. In the LSDB of R1, the LSA shown in the figure is seen. The network engineer makes the following inferences based on the LSA. Which one is wrong?
- A. The router that generates the LSA does not support importing external routes into OSPFv3
- B. This LSA is not generated by R1
- C. The router that generates the LSA has at least two interfaces with OSPFv3 enabled
- D. The router that generates this LSA will not generate a Network-LSA
Answer: A
NEW QUESTION # 123
In an MPLS VPN network, data packets are forwarded when they enter the public network. Will be encapsulated with two layers of MPLS labels.
Which of the following descriptions are correct about the processing of the data packet? (Multiple choice)
- A. The packet is forwarded to the Egress PE device after the outer label pops up on the penultimate hop device
- B. The Egress PE device receives untagged IP packets
- C. The Egress PE device correctly sends the data packet to the corresponding VPN according to the inner label
- D. The outer label of the packet received by the penultimate hop device is 3
Answer: A,C
NEW QUESTION # 124
In the test phase of cutover, which standards that can indicate the test has been completed?
- A. Test network business as normal as the standard
- B. The configuration check result of the IP device is normal as the standard
- C. Check that the network is running normally as a standard
- D. The upper-layer application service test carried by the network is normal as the standard
Answer: D
NEW QUESTION # 125
The rollback operation of project cutover can be temporarily determined according to the situation during cutover, and no advance plan is required.
- A. True
- B. False
Answer: B
NEW QUESTION # 126
A message with a destination IP address of 4.4.4.4 forwarded by R1 is transmitted in an MPLS network. Part of the LSP information of R3 is shown in the figure. Which of the following devices will perform MPLS label operations during the transmission of the message? (Multiple choice)
- A. R2
- B. R3
- C. R4
- D. R1
Answer: A,B,D
NEW QUESTION # 127
MPLS has the concept of FEC-Forwarding Equivalence Class, so on which of the following standards cannot FEC be allocated based?
- A. Application Protocol
- B. Fragment of offiset
- C. Class of Service
- D. Destination Addess
Answer: B
NEW QUESTION # 128
In order to speed up the perception of link failures in the IS-IS network, IS-IS can be linked with BFD.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 129
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HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Certification Sample Questions and Practice Exam: https://vceplus.actualtestsquiz.com/H12-831_V1.0-ENU-test-torrent.html
