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42. Frage
Which of the following statements are true about common storage types used by enterprises?
Antwort: C,D
Begründung:
A). FTP servers are typically used for file storage.
This is correct. FTP (File Transfer Protocol) servers are indeed a common way to store and share files. They are widely used for basic file storage and transfer needs.
B). Object storage devices are typically disk arrays.
This is incorrect. Object storage devices are not typically disk arrays in the traditional sense.
Object storage is designed for massive amounts of unstructured data. While they use disks for persistence, they present data as objects with metadata, rather than as blocks or files. Object storage solutions often use distributed systems across many servers, not just a single array.
C). Block storage applies to databases that require high I/O. This is correct. Block storage is ideal for applications that demand high I/O performance, such as databases. Block storage provides raw, unformatted data blocks, giving applications direct control and low latency.
D). Block storage typically applies to remote backup storage. This is partially true, but not the typical primary use case. While block storage can be used for remote backups, it is generally considered less efficient and more expensive than object storage for this purpose. Object storage is better suited for large, unstructured backup datasets. Block storage is better for applications that need fast read/write speeds, such as databases and virtual machines.
Therefore, the correct answers are A and C.
43. Frage
Which of the following statements are true about common storage types used by enterprises?
Antwort: C,D
Begründung:
Comprehensive and Detailed in Depth
A . FTP servers are typically used for file storage.
This is correct. FTP (File Transfer Protocol) servers are indeed a common way to store and share files. They are widely used for basic file storage and transfer needs.
B . Object storage devices are typically disk arrays.
This is incorrect. Object storage devices are not typically disk arrays in the traditional sense. Object storage is designed for massive amounts of unstructured data. While they use disks for persistence, they present data as objects with metadata, rather than as blocks or files. Object storage solutions often use distributed systems across many servers, not just a single array.
C . Block storage applies to databases that require high I/O.
This is correct. Block storage is ideal for applications that demand high I/O performance, such as databases. Block storage provides raw, unformatted data blocks, giving applications direct control and low latency.
D . Block storage typically applies to remote backup storage.
This is partially true, but not the typical primary use case. While block storage can be used for remote backups, it is generally considered less efficient and more expensive than object storage for this purpose. Object storage is better suited for large, unstructured backup datasets. Block storage is better for applications that need fast read/write speeds, such as databases and virtual machines.
Therefore, the correct answers are A and C.
Reference to Huawei Data Center Network documents:
Huawei storage product documentation detailing block storage (e.g., OceanStor Dorado), file storage, and object storage (e.g., OceanStor Pacific) characteristics and use cases.
Huawei white papers on data center storage architectures, which compare and contrast different storage types.
Huawei HCIP-Storage training materials, which will have very detailed information regarding each of the storage types, and their use cases.
44. Frage
Which of the following statements is false about VXLAN tunnel establishment?
Antwort: A
Begründung:
VXLAN (Virtual Extensible LAN) tunnels are used to encapsulate Layer 2 traffic over a Layer 3 network, a key component in Huawei's CloudFabric data center solutions. Let's evaluate each statement:
A). A VXLAN tunnel is identified by a pair of VTEPs: This is true. A VXLAN tunnel is identified by the pair of VXLAN Tunnel Endpoint (VTEP) IP addresses (local and remote), along with the VNI (VXLAN Network Identifier). This ensures unique tunnel identification. TRUE.
B). After a tunnel is established, if one end of the tunnel goes Down, the other end may not go Down:
This is true. VXLAN tunnels are unidirectional, and the status of one end does not automatically affect the other unless the underlay network connectivity (e.g., Layer 3 reachability) is lost. The remote VTEP may remain operational if it can still encapsulate/decapsulate traffic. TRUE.
C). For a static tunnel, you need to manually configure the local and remote VNIs: This is true. In a static VXLAN tunnel, administrators must manually configure the VNI and VTEP IP addresses on both ends, as there is no dynamic control plane (e.g., BGP EVPN) to automate the process.
TRUE.
D). Dynamic tunnels depend on EVPN Type 5 routes to transmit information: This is false.
Dynamic VXLAN tunnels rely on BGP EVPN as the control plane, but Type 5 routes (IP Prefix routes) are specifically used for advertising host IP routes and external network routes, not for general tunnel establishment. Dynamic tunnel setup primarily uses Type 2 (MAC/IP Advertisement) and Type 3 (Multicast) routes to exchange VNI and VTEP information. Type 5 routes are relevant for Layer 3 routing, not the initial tunnel setup. FALSE.
Thus, D is the false statement because dynamic tunnels depend on EVPN Type 2 and Type 3 routes, not Type 5, for initial establishment.
45. Frage
In the spine-leaf DCN architecture, the border leaf node and service leaf node can be deployed on the same device.
Antwort: A
Begründung:
In Huawei's spine-leaf data center network (DCN) architecture, the topology consists of spine nodes (core) and leaf nodes (access/aggregation). Leaf nodes can serve different roles:
Border Leaf Node: Connects the DCN to external networks or other domains, handling Layer 3 routing.
Service Leaf Node: Connects to internal services (e.g., servers, VMs), often handling Layer
2/Layer 3 traffic.
In practice, a single physical device can be configured to perform both roles (border and service) if it has the necessary interfaces and routing capabilities. Huawei's CloudFabric documentation supports this flexibility, allowing a leaf switch to act as both a border and service node based on configuration (e.g., using VRFs or VXLAN gateways). This reduces hardware costs and simplifies deployment in smaller DCNs.
The statement is TRUE (A) because the border leaf and service leaf roles can be deployed on the same device in a spine-leaf architecture.
46. Frage
Which of the following statements are true about a routing design that employs OSPF on the underlay network of a DC? (Select All that Apply)
Antwort: B,C
Begründung:
OSPF (Open Shortest Path First) is a routing protocol used in the underlay network of Huawei's CloudFabric DCNs. Let's evaluate each statement:
A). Typically, the IP address of Loopback0 is configured as the VTEP IP address and the same IP address is planned for active-active leaf nodes in the same group: This is true. Loopback0 IP is commonly used as the VTEP IP for stability, and in active-active leaf node groups (e.g., M-LAG), the same IP can be configured with VRRP or anycast to ensure consistency. TRUE.
B). The network type of spine and leaf nodes can be set to P2P in order to accelerate convergence: This is true. Setting OSPF network type to Point-to-Point (P2P) on spine-leaf links reduces overhead (e.g., no DR/BDR election) and speeds up convergence, a recommended practice in Huawei DCNs. TRUE.
C). This routing design is recommended when the DC has more than 300 switches: This is false.
OSPF is suitable for smaller to medium-sized DCNs (e.g., up to 200-300 switches). For larger networks (>300 switches), EBGP is preferred due to better scalability and reduced complexity.
FALSE.
D). It is recommended that all devices be planned in Area 0: This is false. While a single Area 0 is possible for small DCNs, multi-area OSPF is recommended for larger networks to manage scalability and reduce routing table size, avoiding a flat Area 0 design. FALSE.
Thus, A and B are true statements about OSPF routing design in a DC underlay.
47. Frage
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