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发布日期：2025-09-15 浏览次数：8 来源：WOLF-LAB
CCIE EI核心笔试（CCIE重认证）350-401，DNA-Center原理与对应真题解析
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In Cisco Catalyst Center (formerly DNA Center), what is the integration API?
A an interface between the controller and the network devices, which enables network discovery and configuration management
B westbound interface, which allows the exchange of data to be used by ITSM, IPAM and reporting
C southbound consumer-facing RESTful API, which enables network discovery and configuration management
D northbound consumer-facing RESTful API, which enables network discovery and configuration management
Answer：B
In Cisco DNA Center, what is the integration API?
A southbound consumer-facing RESTful API, which enables network discovery and configuration management
B westbound interface, which allows the exchange of data to be used by ITSM, IPAM and reporting
C an interface between the controller and the network devices, which enables network discovery and configuration management
D northbound consumer-facing RESTful API, which enables network discovery and configuration management
Answer：B
What is the purpose of an integration API in Cisco DNA Center?
A Enable external systems to take actions in response to an event.
B Enable discovery and control of the network by using HTTPS verbs.
C Obtain information about clients, sites, and topology from Cisco DNA Center.
D Allow the platform into approval chains in ITSM.
Answer：D
In Cisco DNA Center, what used to publish events and notifications to a third-party product such a IPAM?
A intent API
B southbound SDK
C integration API
D RESTful API
Answer：C
What is a characteristic of Cisco DNA southbound APIs?
A implements monitoring by using the SOAP protocol
B simplifies management of network devices
C enables orchestration and automation of network devices based on intent
D utilizes REST API
Answer：B
What is a capability of the Cisco Catalyst Center (formerly DNA Center) southbound API?
A It sends webhooks from Cisco Catalyst Center (formerly DNA Center) when alerts are triggered
B It adds support for managing non-Cisco devices from Cisco Catalyst Center (formerly DNA Center).
C It allows administrators to make API calls to Cisco Catalyst Center (formerly DNA Center).
D It connects to ITSM services such as ServiceNow.
Answer：B
| 序号 | 项目 | 原理/理解 |
| 1 | Westbound integration APIs | “Westbound APIs enable ITSM/IPAM integration and approval chains.”——Cisco DNA Center Developer Guide |
| 西向集成 API | #理解: 与ITSM(如 ServiceNow) / IPAM / 报告系统交换数据, 支持 ITSM 审批链; | |
| 2 | Southbound APIs | “Southbound APIs simplify device management and extend to non-Cisco devices via SDK-generated device packs.”——Cisco DNA Center Architecture Guide |
| 南向 API | #理解: 简化网络设备管理, 通过SDK创建设备包支持非Cisco设备; | |
| 3 | Northbound intent APIs | “Northbound intent APIs are consumer-facing RESTful APIs for programmatic control of abstracted network resources.” ——Cisco SDN Design Guide |
| 北向意图 API | #理解: 北向RESTful API, 实现抽象网络资源的编程控制; | |
| “Some northbound APIs in DNA Center and vManage exchange XML-formatted content.”——Cisco API Documentation | ||
| #理解: 部分北向API (如DNA Center与vManage)交换XML格式内容; | ||
| 4 | SWIM API | The SWIM (Software Image Management) API retrieves information about software images.”—— Cisco DNA Center Image Management Guide |
| 软件镜像管理 API | #理解: 检索软件镜像信息 (属于镜像管理模块); | |
| “A golden image is a software image that meets organizational compliance (e.g., security patches, approved versions).”——Cisco DNA Center Image Management Guide | ||
| #理解: 黄金镜像是公司"钦定”"的镜像, 符合所有合规要求, 所有同类型设备都得装这个, 保证统一(避免有的设备用旧版本, 有的用新版本, 出问题); | ||
| “OUTDATED means a newer image is available in DNA Center (not just Cisco.com)—the device’s current image is older.”——Cisco DNA Center Inventory Guide | ||
| #理解: 设备显示 OUTDATED, 不是说 Cisco 官网有新版本, 而是 DNA Center 里存了更新的镜像; | ||
| “Software image operations (upload, assign, deploy) are managed in the Design workflow.”——Cisco DNA Center User Guide | ||
| #理解: 想上传/分配/部署镜像, 得去GUI的Design模块操作(因为镜像属于"设计阶段"的配置) | ||
| “The Design workflow is for greenfield deployments (no existing network), defining topology, IP addressing, and device roles from scratch.”——Cisco DNA Center Deployment Guide | ||
| #理解: Design工作流是"白纸画蓝图", 适合新建网络(绿地部署); | ||
| 5 | PnP | “Site assignment is mandatory in PnP—it associates devices with a physical location (e.g., ‘London Office’), applying location-specific configurations.”——Cisco DNA Center PnP Guide |
| 即插即用 (自动化部署) | #理解: 给新设备做PnP部署时, 需先"分配站点", DNA Center才知道该给它下什么站点的专属配置; | |
| “An ‘unclaimed’ device in PnP has been discovered but not assigned a workflow (e.g., template, site)—it’s waiting for instructions.”——Cisco DNA Center Troubleshooting Guide | ||
| #理解: 设备被发现了, 但还没给它安排 “任务”, 所以标记为"未认领"; | ||
| 6 | Template | “The Template Editor uses predefined configurations with parameterized elements (e.g., IP addresses as variables) to reuse templates across devices.”——Cisco DNA Center User Guide |
| 模板 (自动化部署) | #理解: 模板编辑器是"填空模板", 相当于"一套模板, 万能适配"; | |
| “Composite templates group multiple templates to execute sequentially (e.g., configure VLANs first, then security policies).”——Cisco DNA Center Template Guide | ||
| #理解: 复合模板是"模板的套餐", 比如把"先配VLAN, 再配接口, 最后配安全策略"这三个步骤做成三个模板, 然后用复合模板把它们串起来, 一次执行, 自动完成多步配置, 省得反复操作; | ||
| “The Policy application in DNA Center handles group-based access control—defining which groups (e.g., ‘Sales’) can access which resources (e.g., CRM servers).”——Cisco DNA Center Security Guide | ||
| #理解: Policy模块是"网络门禁", 按组来控制权限, 管理更高效; | ||
| 7 | 设备/拓扑发现, 流量路径 | “SNMPv2c is a primary protocol for device discovery—it retrieves device details (model, IP, status) from SNMP-enabled devices.”——Cisco DNA Center Discovery Guide |
| #理解: SNMPv2c是"设备发现"的主要协议; | ||
| “LLDP (Link Layer Discovery Protocol) is a vendor-neutral protocol for topology discovery of non-Cisco devices (CDP is Cisco-only).”——Cisco DNA Center Topology Guide | ||
| #理解: LLDP是"中立厂商的拓扑发现"协议; CDP的只适合Cisco家的设备; | ||
| “Path Trace verifies host reachability by tracing the network path between two endpoints, identifying failures (e.g., a downed switch port).”——Cisco DNA Center Assurance Guide | ||
| #理解: Path Trace是"网络 GPS", 可用来查两个主机能否互通; | ||
| 8 | 安全与运维 | “Client 360 retrieves user context (username, devices used) from the Identity Services Engine (ISE), which handles authentication.”——Cisco DNA Center Security Guide |
| #理解: Client 360里的用户信息是从ISE同步来的, ISE 负责认证用户, 把这些信息分享给DNA Center展示; | ||
| “After authenticating with username/password, the API returns a token. This token is used in subsequent requests to prove identity, avoiding repeated credential sharing.”——Cisco DNA Center API Reference | ||
| #理解: 访问DNA Center的API时, 先拿账号密码换一个"令牌", 之后每次调用 API都带着这个令牌, 不用每次都输密码, 更安全也更方便; | ||
| “Graceful shutdown of DNA Center requires CLI access to ensure services stop cleanly, preventing data loss.”——Cisco DNA Center Administration Guide | ||
| #理解: 优雅关机不是直接拔电源, 得通过CLI告诉DNA Center: 慢慢关, 先保存数据, 再停服务; | ||
| 9 | DNA Center | “In SD-Access, DNA Center manages the entire fabric lifecycle: design, deployment, provisioning, and assurance.”（Cisco SD-Access Design Guide） |
| #理解: SD-Access里DNA Center是"总管家": 从设计, 部署, 配置, 到保障, 全流程包办; |
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