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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q53-Q58):

NEW QUESTION # 53
Which of the following statements regarding OSPF route summarization is false?

A. Route summarization can reduce routing information, decrease the routing table size, and improve router performance.
B. OSPF supports two route summarization modes: ABR summarization and ASBR summarization.
C. Any router in OSPF can summarize routes.
D. Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.

Answer: C

Explanation:
Route summarization in OSPF is restricted to specific routers: Area Border Routers (ABRs) and Autonomous System Boundary Routers (ASBRs). These devices perform summarization to reduce routing table size and minimize advertised routing information between areas or across AS boundaries. Regular routers cannot perform route summarization, making this statement false .

NEW QUESTION # 54
A session is an entry used to record the connection status of a protocol and is fundamental for the firewall to forward packets. Which of the following protocol packets will the firewall create sessions for?

A. GRE
B. Subsequent fragment
C. ICMP error packet
D. TCP

Answer: A,D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. What is a Firewall Session?
* A firewall session is an entry used to maintain the connection state of a protocol.
* When a packet is forwarded, the firewall creates a session for it and tracks subsequent packets for the same connection to ensure efficient forwarding and security enforcement.
2. Analysis of Each Option:
Option A: Subsequent fragment
* Incorrect.
* A session is created for the initial fragment of a packet. Subsequent fragments are matched to the existing session and do not trigger the creation of a new session.
Option B: ICMP error packet
* Incorrect.
* ICMP error packets (e.g., Destination Unreachable) are considered exceptions and do not create new sessions.
Option C: GRE (Generic Routing Encapsulation)
* Correct.
* GRE is a tunneling protocol that encapsulates packets. A firewall creates a session for GRE traffic to track the state of the encapsulated connection.
Option D: TCP (Transmission Control Protocol)
* Correct.
* TCP is a connection-oriented protocol, and firewalls create sessions for TCP connections to track their state (e.g., SYN, SYN-ACK, FIN).
3. Summary:
* The firewall creates sessions for GRE and TCP protocols.

NEW QUESTION # 55
On an RSTP network, if a port receives an RST BPDU and finds that its buffered RST BPDU is superior to the received RST BPDU, the port discards the received RST BPDU without responding.

A. FALSE
B. TRUE

Answer: B

Explanation:
RST BPDU Handling
* On an RSTP network, if a port receives an RST BPDU and determines its own buffered BPDU is superior, it discards the received BPDU without responding. This ensures stability and proper convergence in the network.
HCIP-Datacom-Core Reference
* BPDU handling is described in the RSTP operation chapters.

NEW QUESTION # 56
The VRID of the VRRP virtual router is 3 and the virtual IP address is 100.1.1.10. What is the virtual MAC address?

A. 01-00-5E-00-01-64
B. 00-00-5E-00-01-64
C. 01-00-5E-00-01-03
D. 00-00-5E-00-01-03

Answer: D

Explanation:
The virtual MAC address for a VRRP virtual router is determined by the formula 00-00-5E-00-01-[VRID in hexadecimal]. For VRID 3, the hexadecimal equivalent is 03. Thus, the virtual MAC address is 00-00-5E-00-
01-03 .

NEW QUESTION # 57
See the following figure. RTA, RTB, RTC, and RTD are in the same AS and establish IBGP peer relationships through direct links. RTB an RTC are route reflectors (RRs), RTA and RTC are the RR clients of RTB, and RTB and RTD are the RR clients of RTC. If RTA advertises the route 10.1.1.0/24 to the BGP process, the Originator ID of the BGP route received by RTD is------------------.

Answer:

Explanation:
1.1.1.1
Explanation:
The Originator ID in a BGP route represents the Router ID of the device that originally advertised the route into the BGP domain. Since RTA originates the route 10.1.1.0/24 into the BGP process, the Originator ID in the route received by RTD will be set to 1.1.1.1 .

NEW QUESTION # 58
......

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