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| Section | Objectives |
|---|---|
| Topic 1: MPLS and VPN Technologies | - MPLS fundamentals
|
| Topic 2: Advanced Routing Protocols | - OSPF Advanced Concepts
|
| Topic 3: Network Design and Troubleshooting | - Troubleshooting methods
|
| Topic 4: BGP and Internet Routing | - BGP fundamentals
|
| Topic 5: IPv6 and Network Services | - Network services
|
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NEW QUESTION # 20
On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is
49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. The import-route isis level-2 into level-1 command is configured on R2 and R5. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RR (Route Reflectors), and R1, R4, R3, and R6 are the iBGP peer relationship clients. The iBGP peer relationship ID is 10.0.0.X/32, where X is the number of the iBGP router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command.
Which of the following statements are true?
Answer: C
NEW QUESTION # 21
On the network shown in the figure, the DHCP server function is enabled on GE0/0/0 of R2, and the address pool is an interface address pool.
When GE0/0/0 and GE0/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.
Options:
Answer: A
Explanation:
Comprehensive and Detailed In-Depth Explanation:
Understanding the DHCP Process in This Scenario:
* DHCP Server on R2:
* The DHCP server is configured on interface GE0/0/0 of R2.
* The address pool is an interface address pool, meaning that IP addresses are allocated from the subnet of GE0/0/0 (i.e., 10.0.12.0/24).
* DHCP Clients on R1:
* Both interfaces (GE0/0/0 and GE0/0/1) on R1 are set as DHCP clients, meaning they will send DHCP DISCOVER messages to obtain an IP address dynamically.
* Why Only One Interface Gets an IP Address?
* Interface address pools in Huawei devices assign only one IP address per MAC address (which is typically the router's MAC).
* Since both interfaces belong to R1, they share the same MAC address when making a DHCP request.
* As a result, the DHCP server on R2 only assigns one IP address to the first requesting interface.
* The second request is ignored or denied by the DHCP server due to the duplicate MAC address issue.
Key Takeaways:
* Huawei routers using an interface-based DHCP address pool assign only one IP per MAC address.
* Since both interfaces on R1 have the same MAC, only one gets an IP.
* This behavior is expected in Huawei's HCIP-Datacom-certified DHCP configurations.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* Huawei HCIP-Datacom Official Certification Guide, Chapter on DHCP Server and Client Configurations.
* Huawei Datacom Configuration Guide, Section on Interface Address Pools and Address Assignment Limitations.
* Huawei Enterprise Networking Training Materials, DHCP Relay and DHCP Server Behavior.
NEW QUESTION # 22
Regarding the description of the label encapsulation format in MPLS, which one is correct? (Multiple choice)
Answer: A,D
NEW QUESTION # 23
Entries in a MAC address table are classified into dynamic, static, and blackhole entries. In addition, the MAC address table of a switch also contains service MAC address entries, which are typically converted from dynamic entries.
Answer: A
Explanation:
Huawei classifies the principal MAC address-table entries as dynamic, static and blackhole entries:
* Dynamic entries are learned automatically from the source MAC addresses of received frames and are subject to aging.
* Static entries are manually configured, do not age and remain after a saved configuration is restarted.
* Blackhole entries are manually configured to discard frames sourced from or destined for specified MAC addresses.
Service modules can further classify or convert dynamically learned entries according to a particular service.
Huawei examples include secure MAC, authentication MAC, guest MAC and MUX MAC entries. These are collectively referred to as service MAC address entries. Their forwarding and aging behavior is controlled by the feature that created or converted them-for example, port security, access authentication or MUX VLAN.
Therefore, the statement is correct: in addition to the three fundamental MAC-entry classes, a switch may contain service-specific MAC entries that are generally derived from or further classifications of dynamically learned entries. Huawei MAC address-entry classification
NEW QUESTION # 24
IPSG is a source IP address filtering technology based on the three-layer interface. It can prevent malicious hosts from forging the IP addresses of legitimate hosts to impersonate legitimate hosts to access legitimate network resources.
Answer: B
NEW QUESTION # 25
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