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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q310-Q315):

NEW QUESTION # 310
On an STP network, only the designated port processes inferior BPDUs. On an RSTP network, a port with any role processes inferior BPDUs.

A. FALSE
B. TRUE

Answer: B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* STP and RSTP Behavior:
* STP: Only the designated port processes inferior BPDUs. Inferior BPDUs are received from downstream switches and typically indicate topology changes.
* RSTP: All ports, regardless of role (root, designated, or alternate), process inferior BPDUs to ensure faster convergence.
* Behavior Difference:
* RSTP improves convergence by allowing any port to process inferior BPDUs, unlike STP, which restricts this function to designated ports.
References:
* HCIA-Datacom Study Guide, Chapter: STP vs RSTP
Huawei STP and RSTP Configuration Comparison

NEW QUESTION # 311
Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?

A. 802.11b
B. 802.11ax
C. 802.11ac
D. 802.11n

Answer: C

NEW QUESTION # 312
BGP is a distance-vector protocol that implements route reachability between ASs and selects optimal routes.
Which of the following statements are true about this protocol?

A. BGP provides various routing policies.
B. BGP supports automatic peer discovery.
C. BGP does not support authentication. Therefore, it cannot ensure network security.
D. BGP uses TCP as the transport layer protocol.

Answer: A,D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Overview of BGP:
BGP (Border Gateway Protocol) is an Exterior Gateway Protocol (EGP) designed to exchange routing information between different Autonomous Systems (ASs) on the internet. Unlike traditional distance-vector protocols (like RIP), BGP is considered a path-vector protocol, as it not only determines reachability but also ensures policy-based routing decisions and advanced path selection mechanisms.
2. Analysis of Each Option:
Option A: BGP does not support authentication. Therefore, it cannot ensure network security.
This statement isincorrect.
BGP supports authentication using mechanisms such as TCP MD5 (Message Digest 5) and TCP-AO (Authentication Option). These authentication mechanisms ensure that BGP messages are not tampered with or intercepted during transmission, enhancing network security.
HCIA-Datacom Study Guide, Chapter "BGP Concepts and Features," Authentication Section.
Option B: BGP uses TCP as the transport layer protocol.
This statement iscorrect.
BGP relies on TCP (Transmission Control Protocol) as its transport layer protocol, specifically on port 179.
TCP provides reliable delivery of BGP messages and ensures the session remains established in case of transient network issues.
TCP also handles error recovery and sequencing, making it a suitable choice for BGP, which requires reliable communication between peers.
Reference: HCIA-Datacom Study Guide, Chapter "BGP Basics," Transport Protocol Section.
Option C: BGP provides various routing policies.
This statement iscorrect.
One of the primary advantages of BGP is its robust routing policy configuration capabilities. Administrators can define import and export policies, route preferences, and community attributes to influence routing decisions. This allows for granular control over which routes are advertised or accepted.
Routing policies make BGP a highly flexible protocol for large-scale and complex networks.
Reference: HCIA-Datacom Study Guide, Chapter "BGP Route Policies," and "Attributes Overview." Option D: BGP supports automatic peer discovery.
This statement isincorrect.
BGP does not support automatic peer discovery. All BGP peers must be manually configured with their IP addresses and AS numbers. This ensures precise control over peer relationships, but also increases administrative overhead.
In contrast, some IGPs (Interior Gateway Protocols) like OSPF support automatic neighbor discovery.
Reference: HCIA-Datacom Study Guide, Chapter "BGP Neighbor Relationships," Manual Configuration Section.
Summary of Correct Answers:
Correct Options:B, C
Incorrect Options:A, D
References:
Huawei HCIA-Datacom Study Guide
BGP Protocol Concepts - "Huawei HCIA Training Material"
RFC 4271: Border Gateway Protocol 4 (BGP-4)

NEW QUESTION # 313
IGMP group entries play an important role in multicast forwarding. An administrator runs a command to view information about a multicast entry. The information is as follows:
sql
Copy
<HUAWEI> display igmp group
Interface group report information
Vlanif100(10.1.6.2):
Total 1 IGMP Group reported
Group Address Last Reporter Uptime Expires
225.1.1.2 10.1.6.10 00:02:04 00:01:17
Given this, which of the following statements are true?

A. This entry can be used to construct the corresponding (S, G) entry.
B. 225.1.1.2 is the address of the group that the user joins.
C. This entry is created when the device receives an IGMP Join message from a user.
D. Expires indicates the aging time of the IGMP group.

Answer: B,C,D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding the IGMP Group Entry:
The IGMP group entry contains key information about multicast groups on the interface:
* Group Address (225.1.1.2): The multicast group address that the user has joined.
* Last Reporter (10.1.6.10): The IP address of the last host that sent an IGMP Report message for this group.
* Uptime: The duration since the group was first reported.
* Expires: The remaining time before the group entry ages out if no further reports are received.
2. Analysis of Each Statement:
Option A: This entry can be used to construct the corresponding (S, G) entry.
* Incorrect.
* This is a group entry for IGMP, which contains information about the group (G) but does not include a specific source (S). (S, G) entries are created in PIM (Protocol Independent Multicast), not IGMP.
Option B: This entry is created when the device receives an IGMP Join message from a user.
* Correct.
* IGMP Join messages are used by hosts to signal their intent to join a multicast group. When such a message is received, the group entry is created.
Option C: Expires indicates the aging time of the IGMP group.
* Correct.
* The "Expires" field shows the remaining time before the group entry ages out if no further IGMP reports are received.
Option D: 225.1.1.2 is the address of the group that the user joins.
* Correct.
* The "Group Address" field explicitly states that 225.1.1.2 is the multicast group that the user has joined.
3. Summary:
* Correct Options: B, C, D

NEW QUESTION # 314
The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?

A. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.
B. Filters LSPs to be advertised.
C. Is used together with the route import function to advertise some imported external routes to neighbors.
D. Controls the advertisement of routes generated by the device.

Answer: A

NEW QUESTION # 315
......

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