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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q174-Q179):

NEW QUESTION # 174
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. TCP
B. GRE
C. ICMP error packet
D. Subsequent fragment

Answer: A,B

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 # 175
To inject IGP routes into BGP routes, you can only use the network command.

A. TRUE
B. FALSE

Answer: B

NEW QUESTION # 176
An enterprise administrator wants to configure single-hop BFD to implement fast detection of direct links.
Which of the following configurations are mandatory?

A. Enable BFD globally.
B. Configure the remote discriminator of a BFD session.
C. Configure the local discriminator of a BFD session.
D. Configure a multicast IP address for BFD.

Answer: A,B,C

Explanation:
For single-hop BFD (Bidirectional Forwarding Detection), the configuration must include the local and remote discriminators to uniquely identify the session endpoints. Additionally, enabling BFD globally is a prerequisite for initiating BFD sessions. Configuring multicast IP addresses is unnecessary for single-hop BFD, as it operates over direct links. Huawei's configuration guidelines specify these requirements to ensure effective deployment and operation of BFD.
Understanding BFD (Bidirectional Forwarding Detection):
* BFD is a protocol used to detect link faults quickly between two routers.
* Single-hop BFD operates on directly connected links and is commonly used for fast fault detection in routing protocols like OSPF and BGP.

NEW QUESTION # 177
Route attributes are specific descriptions of routes. BGP route attributes can be classified into four types.
Which of the following are well-known discretionary attributes?

A. Local-Preference
B. MED
C. Atomic_Aggregate
D. Community

Answer: A,C

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. BGP Attributes Overview:
BGP uses attributes to describe the properties of routes. These attributes are classified into the following categories:
* Well-Known Mandatory: Attributes that must be recognized and included in every BGP update.
Examples: AS_PATH, ORIGIN, NEXT_HOP.
* Well-Known Discretionary: Attributes that must be recognized but are not required in every BGP update. Examples: LOCAL_PREF, ATOMIC_AGGREGATE.
* Optional Transitive: Attributes that may or may not be recognized, but must be passed along to other BGP peers. Examples: COMMUNITY.
* Optional Non-Transitive: Attributes that may or may not be recognized, and are not passed along to other BGP peers. Examples: MED (Multi-Exit Discriminator).
2. Analysis of Each Option:
Option A: Atomic_Aggregate
* Correct.
* This is a well-known discretionary attribute. It indicates that the advertised route is an aggregate route that summarizes multiple specific routes.
Option B: Local-Preference
* Correct.
* This is a well-known discretionary attribute. It is used within an AS to prioritize routes, with higher values being preferred.
Option C: Community
* Incorrect.
* The COMMUNITY attribute is an optional transitive attribute. It is used to tag routes with specific labels to apply routing policies.
Option D: MED (Multi-Exit Discriminator)
* Incorrect.
* The MED attribute is an optional non-transitive attribute. It is used to influence the choice of the preferred path when there are multiple entry points into an AS.
3. Summary:
* Well-Known Discretionary Attributes: Atomic_Aggregate and Local-Preference.

NEW QUESTION # 178
Drag the following VRRP states to the corresponding working mechanisms.

Answer:

Explanation:

Explanation:
Master
Backup
Master
Backup

NEW QUESTION # 179
......

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q174-Q179):

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