Simulation H12-821_V1.0 Questions | H12-821_V1.0 Exam Questions And Answers

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q160-Q165):

NEW QUESTION # 160
Which of the following statements is false about the default processing of the next hop address when a BGP device advertises a route?

A. A BGP device does not change the next hop address of a route if the route is received from an IBGP peer and is to be sent to another IBGP peer.
B. When advertising a locally originated route to an IBGP peer, a BGP device sets the next hop address to the IP address of its interface connected to the peer.
C. When advertising a route to an EBGP peer, a BGP device sets the next hop address to the IP address of its interface connected to the peer.
D. When advertising a non-labeled route received from an EBGP peer to an IBGP peer, a BGP device changes the next hop address to the IP address of its interface connected to the IBGP peer.

Answer: D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Default Next Hop Behavior in BGP:
* Locally Originated Routes (A): The next hop is set to the advertising router's interface IP address.
* Routes Received from EBGP (B): The next hop is not changed when these routes are advertised to IBGP peers. (This makes Option B false.)
* Routes Advertised to EBGP (C): The next hop is set to the interface IP address of the advertising router.
* Routes Advertised Between IBGP Peers (D): The next hop is not modified by default.
* Incorrect Statement:
* Option B is incorrect because the next hop of a non-labeled route received from an EBGP peer is not changed when it is advertised to IBGP peers.
References:
* HCIA-Datacom Study Guide, Chapter: BGP Next Hop Behavior
Huawei BGP Routing Principles

NEW QUESTION # 161
Which of the following descriptions of multicast routing are correct? (Multiple choice)

A. If an upstream neighbor or downstream neighbor on the multicast distribution tree is unreachable, multicast routing will re-converge.
B. Multicast routing protocols are divided into intra-domain multicast routing protocols and inter-domain multicast routing protocols.
C. Multicast routing protocols include IGMP protocol
D. Multicast routing protocols are used to establish and maintain multicast routes, and forward multicast packets correctly and efficiently.

Answer: A,B,D

NEW QUESTION # 162
The following is the information output by a router through the display bgp routing-table command:
BGP Local router ID is 192.168.2.2 Status codes: *-valid, >-best, d-damped, h-history, i-internal, s- suppressed, S- Stale Origin: i-IGP, e-EGP, ? incomplete Total Number of Routes: 9 Network Next Hop MED LocPrfPrefVal Path/0gn*>1.1.1.9/32 0.0.0.0*)i 2.2.2.7/32 10.1 .1.2100 (65001)i 1.3.1 1000 (6501165001)i*i 1.2.2100 (65011)i*>i
2.2.2.8/32 (6500165011)i 1.3.2100*i
Regarding the description of the above output information, which one is wrong?

A. Routes to 2.2.2.7/32 are injected through the network command.
B. The route to 2.2.2.7/32 with the next hop being 10.1.3.1 is the optimal route.
C. There are two paths to 2.2.2.8/32
D. The Router ID of this device is 192.168.2.2

Answer: B

NEW QUESTION # 163
In a broadcast network, what is the default interval for sending Hello by DIS?

A. 3.3s
B. 5s
C. 10s
D. 40s

Answer: A

NEW QUESTION # 164
DDoS attack means that the attacker controls a large number of zombie hosts and sends a large number of carefully constructed attack messages to the target network, thereby causing the attacker to refuse to provide services to requests from normal users.

A. TRUE
B. FALSE

Answer: A

NEW QUESTION # 165
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