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| Section | Objectives |
|---|---|
| Routing and Switching Technologies | - IP routing protocols
|
| Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
| IPv6 and Advanced IP Technologies | - IPv6 deployment
|
| Network Automation and Programmability | - SDN and automation
|
| WAN and VPN Technologies | - MPLS fundamentals
|
| Network Security and QoS | - QoS mechanisms
|
| Enterprise Network Architecture | - Network design principles
|
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NEW QUESTION # 79
The following statement about IS-IS (IPv6) is correct?
Answer: B,C,D
NEW QUESTION # 80
Which of the following is the drop probability of packets exceeding the upper threshold in WRED?
Answer: C
Explanation:
WRED (Weighted Random Early Detection) helps prevent congestion by randomly discarding packets before buffers are full.
Drop Probability Behavior:
Below lower threshold = 0% drop (packets pass normally).
Between lower & upper threshold = Progressively increasing drop probability.
Above upper threshold = 100% drop (probability = 1).
✅ Reference: Huawei HCIE-Datacom Guide - WRED Mechanism
NEW QUESTION # 81
Congestion management technology can be used to discard data packets in the buffer queue to prevent the buffer queue from being exhausted.
Answer: A
Explanation:
This statement confuses congestion management with congestion avoidance:
Congestion Management: Refers to techniques like PQ, CQ, WRR, etc., to schedule packets in queues - i.e., manage how packets are sent, not discarded.
Congestion Avoidance: Techniques like WRED are used to preemptively discard packets to avoid full queues - these do discard packets.
Hence, congestion management does NOT discard packets - it's about controlling transmission order and prioritization.
Correct answer: B. FALSE
NEW QUESTION # 82
Refer to the output information of a device below. According to the information, which of the following MPLS labels is carried in a data packet forwarded by the device to 10.0.1.1?
Answer: A
Explanation:
Comprehensive and Detailed Explanation:
# MPLS labels in SR-MPLS are calculated using the SRGB (Segment Routing Global Block) base and the Prefix-SID.
# Label Calculation Formula:
MPLS Label=SRGB Base+Prefix-SID\text{MPLS Label} = \text{SRGB Base} + \text{Prefix-SID} MPLS Label=SRGB Base+Prefix-SID
# Extracting Values from the LSDB:
* SRGB Base: 36000
* Prefix-SID: 300
# Valid MPLS Labels:
* 36000 + 300 = 36300
* 40002 and 38002 fall within the SRGB range.
* 39002 is outside the expected range, making it the incorrect answer.
# Reference: Huawei HCIE Datacom - Segment Routing Label Calculation
NEW QUESTION # 83
LDP messages are exchanged between LDLRs running the LDP protocol, and LDP messages can be divided into four types according to function, which of the following is not an LDP message type ?
Answer: D
NEW QUESTION # 84
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