Explanation:
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Explanation:
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Comprehensive and Detailed In-Depth Explanation:
* The Flag field in a routing table entry provides specific information about the route.
* G (Gateway flag): This flag indicates that the next hop is a gateway (another router) rather than a directly connected destination.
* S (Static flag): This flag indicates that the route was manually configured as a static route.
* H (Host flag): This flag means that the destination is a directly connected host, not a network.
* D (Dynamic flag): This flag is used for dynamically learned routes from protocols like OSPF, EIGRP, or BGP.
* Since we are looking for the flag that indicates the next hop is a gateway, the correct answer is G.
# Reference: Huawei HCIA-Datacom Study Guide, Chapter on Routing Table and FIB Entries.

Comprehensive and Detailed in-depth Step-by-Step Explanation:In IS-IS, the interface cost is a metric used to determine the best path to a destination. Lower-cost paths are preferred over higher-cost paths. By default, IS-IS interface costs can range from 1 to 63.
* Default Cost Range:
* IS-IS allows the configuration of interface costs within the range of 1-63 by default. This range is sufficient for most networks.
* Maximum Configurable Cost:
* The maximum value that can be configured by default is 63. If there is a requirement for a higher cost range, the metric-style can be changed to wide, which allows the cost range to extend beyond 63.
* Option A (67): Incorrect. 67 is not the maximum default value.
* Option B (63): Correct. This is the maximum default cost value.
* Option C (64): Incorrect. This is beyond the default range.
* Option D (68): Incorrect. This is beyond the default range.
References:
* Huawei HCIA-Datacom Study Guide, Chapter on "IS-IS Cost and Route Selection".
* RFC 5308 - Routing IPv6 with IS-IS.

Comprehensive and Detailed Step-by-Step Explanation:
1. Overview of PBR (Policy-Based Routing):
Policy-Based Routing (PBR) allows you to override traditional routing decisions by defining user-specific policies.
* Interface-Based PBR: Applied to packets arriving at a specific interface and affects traffic being forwarded through the device.
* Local PBR: Applied to traffic generated by the local router itself (e.g., locally originated packets such as management traffic).
2. Analysis of Each Statement:
Option A: Interface-based PBR takes effect only for forwarded packets.
* Correct (True Statement).
* Interface-based PBR applies only to packets arriving at a specific interface and being forwarded through the router. It does not affect locally originated traffic.
Option B: Local PBR takes effect only for locally originated packets.
* Correct (True Statement).
* Local PBR specifically applies to traffic generated by the router itself, such as pings, SNMP requests, or routing protocol updates.
Option C: Interface-based PBR is configured on an interface and takes effect only for incoming packets on the interface.
* Correct (True Statement).
* Interface-based PBR is applied directly on the interface using commands like policy-based-route. It only affects traffic entering the specified interface.
Option D: Local PBR is configured in the protocol view.
* Incorrect (False Statement).
* Local PBR is not configured in the protocol view. It is typically configured using the command local- policy in the system view to handle traffic generated by the router.
3. Summary:
* Correct answer: D (Local PBR is NOT configured in the protocol view).