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| Section | Objectives |
|---|---|
| Topic 1: IPv6 | - IPv6 Fundamentals
|
| Topic 2: Network Service and Management | - O&M Technologies
|
| Topic 3: Routing Basics | - IP Routing Fundamentals
|
| Topic 4: Routing and Traffic Control | - Traffic Management
|
| Topic 5: IS-IS | - IS-IS Fundamentals
|
| Topic 6: WLAN | - Wireless Networking
|
| Topic 7: Ethernet Switching Technology | - Switching Fundamentals
|
| Topic 8: Network Solutions | - Enterprise Network Solutions
|
| Topic 9: Network Security | - Security Technologies
|
| Topic 10: OSPF | - OSPF Fundamentals
|
| Topic 11: Network Reliability | - Reliability Technologies
|
| Topic 12: BGP | - BGP Technologies
|
| Topic 13: Multicast | - IP Multicast Technologies
|
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NEW QUESTION # 294
A filter named si is configured on a device using the as-path-filter command and is applied to a specified BGP peer. The detailed configurations are as follows:
csharp
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[SW1] ip as-path-filter si permit _65500$
[SW1] bgp 65100
[SW1-bgp] ipv4-family unicast
[SW1-bgp-af-ipv4] peer 10.1.1.2 as-path-filter si import
After the configuration is complete, which of the following statements is true about the way the local device processes the routes received from the peer?
Answer: C
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding the AS-Path Filter:
* The as-path-filter command is used in BGP to filter routes based on the AS_PATH attribute.
* In this configuration:
* The filter si is defined with the regular expression _65500$.
* The _65500$ expression specifies that the AS_PATH must end with 65500, meaning that the route's last hop must have passed through AS 65500.
2. Option Analysis:
Option A: It accepts only the routes whose AS_Path contains AS 65500.
* Incorrect.
* The _65500$ filter specifically matches routes where AS 65500 is the last AS in the AS_PATH. A route may contain AS 65500 somewhere in the middle of the AS_PATH but will not match this filter unless it is the last AS.
Option B: It accepts only the routes originated from AS 65500.
* Incorrect.
* Routes that originate from AS 65500 have an AS_PATH that starts with 65500. However, the filter
_65500$ only matches routes where AS 65500 is the last AS, not the first AS.
Option C: It accepts only the routes that last pass through AS 65500.
* Correct.
* The _65500$ filter ensures that the AS_PATH ends with 65500. This means that the route must have last passed through AS 65500 before being received by the local BGP router.
Option D: It accepts only the routes forwarded by AS 65500.
* Incorrect.
* While AS 65500 may forward the route, this is not what the filter _65500$ specifically checks for. It only ensures that AS 65500 is the last AS in the AS_PATH.
3. Summary:
* The as-path-filter with _65500$ accepts only the routes where AS 65500 is the last AS in the AS_PATH.
NEW QUESTION # 295
Which of the following statement regarding the display ospf peer command output is true?
Answer: A
NEW QUESTION # 296
The DHCP relay is responsible for forwarding DHCP messages between the DHCP server and the DHCP client, and assists the DHCP server in dynamically allocating network parameters to the DHCP client.
Answer: B
NEW QUESTION # 297
An IS-IS router with an interface priority of 0 cannot participate in DIS election.
Answer: A
NEW QUESTION # 298
During routine operation and maintenance, an engineer checks the IGMP configuration on RTA. The configuration is as follows:
Interface information of VPN-Instance: public net
GigabitEthernet0/0/1 (192.168.1.1):
IGMP is enabled
Current IGMP version is 2
IGMP state: up
IGMP group policy: none
IGMP limit: -
Value of query interval for IGMP (negotiated): -
Value of query interval for IGMP (configured): 60 s
Value of other querier timeout for IGMP: 0 s
Value of maximum query response time for IGMP: 10 s
Querier for IGMP: 192.168.1.1 (this router)
Given this, which of the following statements is false?
Answer: B
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding IGMP (Internet Group Management Protocol):
IGMP is used in multicast networking to manage membership of devices in multicast groups.
Key parameters in the configuration provided:
Interface IP Address: 192.168.1.1
IGMP Version: 2
Query Interval (Configured): 60 seconds
Maximum Query Response Time: 10 seconds
Querier Address: 192.168.1.1
2. Analysis of Each Statement:
Option A: The IP address of the interface is 192.168.1.1.
Correct (True Statement).
The configuration clearly shows that the IP address of the interface is 192.168.1.1.
Option B: The maximum response time to Query messages is 10s.
Correct (True Statement).
The configuration explicitly mentions: Value of maximum query response time for IGMP: 10 s.
Option C: The interval for sending Group-Specific Query messages is 60s.
Incorrect (False Statement).
The 60-second value refers to the query interval, which is the time interval between general queries sent by the querier.
The interval for group-specific queries is not specified in this configuration. It is determined dynamically based on the multicast environment and is usually shorter than the general query interval.
Option D: The IGMP version is IGMPv2.
Correct (True Statement).
The configuration specifies: Current IGMP version is 2.
3. Why Option C is False:
The 60-second value is for general query interval, not group-specific query interval.
The statement misinterprets the configuration, making it false.
4. Summary:
C: (The interval for sending Group-Specific Query messages is 60s).
Reference:
Huawei HCIA-Datacom Study Guide, Chapter "IGMP Protocol Configuration." RFC 2236: IGMPv2 Specification.
NEW QUESTION # 299
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