최신 H12-821_V1.0 무료덤프 - Huawei HCIP-Datacom-Core Technology V1.0
The Next_Hop attribute in BGP records the next hop of a route. Similar to the next hop in an IGP, the Next_Hop attribute in BGP must be the IP address of a peer interface.
정답: A
설명: (DumpTOP 회원만 볼 수 있음)
An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
See the network shown in the following figure.
R1 and R2 run IS-IS and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2. Which of the following statements are true?
R1 and R2 run IS-IS and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2. Which of the following statements are true?
정답: A,D
설명: (DumpTOP 회원만 볼 수 있음)
On an OSPF network, if two routers with the same router ID run in different areas and one of the routers is an ASBR, LSA flapping occurs.
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
Which of the following is the default interval at which the DIS on a broadcast IS_IS network sends CSNPs.
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
In PIM-DM, which of the following processes are involved in SPT establishment?
정답: B,C,D
설명: (DumpTOP 회원만 볼 수 있음)
On a BGP network, a route-policy can be used to modify route attributes. Which of the following statements is false about route-policies?
정답: C
설명: (DumpTOP 회원만 볼 수 있음)
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?
Which of the following statements are true about this protocol?
정답: A,B
설명: (DumpTOP 회원만 볼 수 있음)
R1, R2, R3, and R4 run IS-IS, and the DIS priorities of their interfaces are shown in the following figure. If all these devices are started simultaneously, will be elected as the DIS. (Enter the device name, for example, R1.)
정답:
R4
* DIS Election in IS-IS:
* In IS-IS, the Designated Intermediate System (DIS) is elected on broadcast networks to reduce the number of LSAs exchanged and maintain the LSDB.
* The DIS is elected based on priority:
* The router with the highest priority is elected as the DIS.
* If priorities are equal, the System ID is used as a tie-breaker, and the router with the highest System ID becomes the DIS.
* DIS Election in IS-IS:
* In IS-IS, the Designated Intermediate System (DIS) is elected on broadcast networks to reduce the number of LSAs exchanged and maintain the LSDB.
* The DIS is elected based on priority:
* The router with the highest priority is elected as the DIS.
* If priorities are equal, the System ID is used as a tie-breaker, and the router with the highest System ID becomes the DIS.
On a P2P IS-IS network, after a neighbor relationship is established between R1 and R2, R2 finds that its LSDB is not synchronized. Then, R2 requests corresponding LSPs from R1 for LSDB synchronization. The following figure shows the synchronization process. Drag the following packet types to the steps in which they are used.(Token is reusable)
정답:
Explanation of IS-IS Packet Types and Synchronization Process:
In the given scenario, R2 requests LSPs from R1 to synchronize its Link State Database (LSDB). The following IS-IS packet types are involved in this synchronization process:
1. P2P IIH (Point-to-Point IS-IS Hello):
* Purpose: Establishes and maintains IS-IS neighbor relationships.
* Step: This packet is exchanged initially to detect and maintain the adjacency between R1 and R2.
2. PSNP (Partial Sequence Number PDU):
* Purpose: Requests missing or outdated LSPs (Link State PDUs) from a neighbor to synchronize the LSDB.
* Step: In this case, R2 sends a PSNP to R1 to request the missing or outdated LSP.
3. LSP (Link State PDU):
* Purpose: Contains routing information and is used to update the LSDB.
* Step: R1 sends the requested LSPs to R2 for synchronization.
4. CSNP (Complete Sequence Number PDU):
* Purpose: Lists all LSPs in the sender's LSDB to help neighbors verify and request missing LSPs.
* Step: R1 sends a CSNP during retransmission timeout to notify R2 of its LSPs.
In the given scenario, R2 requests LSPs from R1 to synchronize its Link State Database (LSDB). The following IS-IS packet types are involved in this synchronization process:
1. P2P IIH (Point-to-Point IS-IS Hello):
* Purpose: Establishes and maintains IS-IS neighbor relationships.
* Step: This packet is exchanged initially to detect and maintain the adjacency between R1 and R2.
2. PSNP (Partial Sequence Number PDU):
* Purpose: Requests missing or outdated LSPs (Link State PDUs) from a neighbor to synchronize the LSDB.
* Step: In this case, R2 sends a PSNP to R1 to request the missing or outdated LSP.
3. LSP (Link State PDU):
* Purpose: Contains routing information and is used to update the LSDB.
* Step: R1 sends the requested LSPs to R2 for synchronization.
4. CSNP (Complete Sequence Number PDU):
* Purpose: Lists all LSPs in the sender's LSDB to help neighbors verify and request missing LSPs.
* Step: R1 sends a CSNP during retransmission timeout to notify R2 of its LSPs.
Which of the following LSAs are advertised only within a single area?
정답: A,B
설명: (DumpTOP 회원만 볼 수 있음)
During BGP route summarization configuration, the keyword can be used to suppress all specific routes so that only the summary route is advertised. The summary route carries the Atomic-aggregate attribute rather than the community attributes of specific routes.
정답:
suppress-spec-map
Explanation:
Understanding BGP Route Summarization:
* In Border Gateway Protocol (BGP), route summarization is a technique used to aggregate multiple specific prefixes into a broader summary prefix. This reduces the size of routing tables and improves routing efficiency.
* Summarization helps to hide unnecessary details from other parts of the network while still maintaining connectivity.
Explanation:
Understanding BGP Route Summarization:
* In Border Gateway Protocol (BGP), route summarization is a technique used to aggregate multiple specific prefixes into a broader summary prefix. This reduces the size of routing tables and improves routing efficiency.
* Summarization helps to hide unnecessary details from other parts of the network while still maintaining connectivity.
When two BGP peers support different Hold Time, they will negotiate to support the shortest Hold Time interval they can support.
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
On Huawei switches, which of the following planes provides network information and forwarding entries that are mandatory for data plane forwarding?
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
GRE is a Layer 2 VPN encapsulation technology that encapsulates packets of certain data link layer protocols so that the encapsulated packets can be transmitted over an IP network.
정답: A
설명: (DumpTOP 회원만 볼 수 있음)
Preferences of routing protocols determine the sequence In which a router selects a route among routes to the same destination /earned through different routing protocols.
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
Roaming technology is typically used on a large WLAN to ensure that STA (station) services are not interrupted when STAs move between coverage areas of different APs.
정답: B
설명: (DumpTOP 회원만 볼 수 있음)