CCNA AI and Network Operations Questions

Incorrect because DELETE does not encrypt payloads; it removes resources from the server. Encryption is handled separately and not by HTTP methods themselves.

Incorrect because PUT does not retrieve lists of resources; it replaces or updates an existing resource. Retrieval is typically done by GET.

Incorrect because while many APIs require tokens for authentication, GET itself does not inherently require a token; authentication depends on API security design, not the HTTP method.

Option A is incorrect because HTTP 200 does not indicate resource deletion. Deletion success is usually represented by 204 No Content or 202 Accepted, not 200.

Option C is incorrect since authentication failures return 401 Unauthorized or 403 Forbidden, not 200. A 200 response confirms successful authentication and request processing.

Option D is incorrect because HTTP 200 does not signal any server reboot requirement. Server maintenance or reboot notifications are not conveyed via standard HTTP success codes.

This option incorrectly claims version control increases interface bandwidth, which is unrelated to version control functionality. Bandwidth is a physical and configuration attribute unaffected by file management systems.

This option is incorrect because version control does not replace device backups. Backups protect device states and data beyond just file changes, which version control alone cannot ensure.

This option falsely asserts that version control guarantees error-free configuration changes. While it improves process discipline, it cannot prevent human errors or validate correctness automatically.

Encryption is not the primary reason; CLI can use SSH and APIs are about structured interaction.

Screen-scraping can be automated network-wide; the key differentiator is the interface structure.

Human error is mitigated by automation itself, not a unique advantage of APIs.

Option C is incorrect because JSON is not an encryption protocol; it does not provide any security or protection for API sessions, which are handled by other protocols like TLS.

Option D is incorrect because JSON does not replace authentication; authentication is a separate process that controls access to APIs and network devices.

Option E is incorrect because JSON is a data format, not an API or directional interface like a southbound API, which refers to communication from controllers to devices.

A 401 status code specifically indicates authentication failure, not a missing endpoint. A non-existent endpoint would return a 404 Not Found status code, which is a different HTTP error.

A successful request with an empty body would return a 204 No Content status code, not 401. The 401 code explicitly means the request was not processed due to missing or invalid authentication.

A server overload is indicated by a 503 Service Unavailable status code, not 401. The 401 code is solely related to authentication issues, not server capacity.

Incorrect because tokens are usually time-limited and expire after a set period to enhance security, so they are not permanent credentials.

Incorrect because Telnet is unrelated to API token authentication; tokens do not depend on Telnet or any specific legacy protocol.

Incorrect because authentication tokens do not convert data formats; their sole purpose is to authenticate clients, not to transform JSON into XML or any other format.

YANG is a data modeling language, not a data format; it describes the structure of data but does not use key-value pairs for API responses.

Syslog is a protocol for logging system events, not a data format for REST API responses.

CDP is a Cisco proprietary discovery protocol for neighbor devices, irrelevant to data formats in REST APIs.

The source interface must be Loopback0 for consistency, and the trap level should be warnings (4) to include warnings.

The NTP server address must be updated to 198.51.100.1; 192.0.2.1 is the misconfigured server.

The trap level should be warnings (4), not debugging (7). Debugging sends all messages, flooding the server.

Option A incorrectly claims version control automatically fixes coding mistakes. While version control tracks changes, it does not validate or correct errors in scripts, so this option is false.

Option C falsely suggests version control removes the need for API authentication. Authentication is a separate security process and is not affected by version control.

Option D incorrectly claims version control replaces the device operating system. Version control manages script versions only and does not interact with device OS software.

This describes a static automation script that runs on a schedule without feedback, but the scenario involves an agent that detects an issue, takes action, re-checks, and escalates if needed, which is adaptive and not static.

Tool-calling is a component of the workflow (executing diagnostic commands and configuration changes), but the overall process includes detection, action, verification, and escalation, which is more than just calling tools.

Reinforcement learning involves continuous trial-and-error learning from rewards, but the scenario uses predefined diagnostics and actions, not learning from past outcomes to improve future decisions.

A packet sniffer captures and analyzes network traffic, but it cannot generate or manipulate configuration templates. It is a monitoring tool, not a configuration automation tool.

A DNS recursive resolver translates domain names to IP addresses and has no capability to generate or manage configuration templates. It is a name resolution service, not a configuration tool.

An STP root bridge is a switch role in Spanning Tree Protocol that prevents loops in a network. It is a functional role, not a tool for creating reusable configuration templates.

Logs must be retained for security investigations; automatic deletion undermines forensics.

Network devices have diverse roles; a uniform configuration cannot address specific security needs.

Indiscriminately opening ports during peak hours exposes the network to unnecessary risk.

The DELETE method is used to remove a resource from the server, not to retrieve information. Using DELETE for retrieval would violate REST principles and could lead to unintended data loss.

POST is used to create a new resource or submit data to be processed, not to retrieve information. It is not idempotent and often changes server state, making it unsuitable for simple retrieval.

PUT is used to update or replace an existing resource, or create one at a specific URI. It is idempotent but modifies server state, so it is not appropriate for retrieving information.

Option A is incorrect because controller-based architectures do not remove the need for IP addressing. IP addresses remain essential for device identification, management, and routing functions within the network.

Option C is incorrect since the data plane on switches is not eliminated. Switches continue to forward traffic locally based on instructions from the controller, maintaining essential forwarding functions.

Option D is incorrect because controller-based networks do not force all routes to become static. Dynamic routing protocols such as OSPF and EIGRP still operate under centralized policy control.

Option B is incorrect because REST APIs do not use Telnet; they rely on HTTP or HTTPS protocols for communication, making Telnet irrelevant in this context.

Option D is incorrect since REST APIs are not limited to physical routers; they are also implemented on controllers, switches, and other network devices, enabling broad automation capabilities.

Option E is incorrect because REST APIs require authentication and authorization to secure access, so they do not eliminate the need for security controls in network automation.

Incorrect because a single scalar string cannot represent multiple interfaces with distinct attributes, making it unsuitable for detailed interface lists.

Incorrect because wildcard masks are related to ACL configurations and do not represent JSON data structures for interface lists.

Incorrect because a route metric table is a routing concept and not a JSON data structure used to represent interface information.

This option is incorrect because structured telemetry and APIs do not eliminate the need for secure transport or access control; security remains a fundamental requirement in network operations.

This option is incorrect since structured telemetry and APIs do not force devices to stop supporting CLI access; Cisco devices commonly support both CLI and programmable interfaces simultaneously.

This option is incorrect because structured telemetry and APIs are broadly applicable across many Cisco network devices and are not limited to wireless LAN controllers.

The NTP server having a higher stratum level than the local clock does not prevent synchronization outright; the router will still attempt to sync if the server is reachable and authenticates, so this is not the most likely cause.

Configuring the server as a peer is unnecessary for an NTP client; the client uses the ntp server command.

NTP version incompatibility does not prevent synchronization because devices negotiate versions automatically.

The problem states there is no firewall, so this cannot be the cause.

Incorrect because DELETE is the HTTP method used to remove resources. GET does not delete or alter the endpoint or its data, so this option misrepresents REST API semantics.

Incorrect because replacing or updating a resource is typically done with the PUT method. GET does not modify or replace resources, so this option confuses method purposes.

Incorrect because forcing a device into PPP mode is a configuration action unrelated to REST API method semantics. GET calls do not trigger operational mode changes.

Option A is incorrect because version control systems do not replace authentication for API clients. Authentication is handled by security protocols and credentials, not by version control.

Option C is incorrect because version control does not assign VLANs or perform any real-time network configuration tasks; it only manages the files that define such configurations.

Option D is incorrect because discovering neighboring devices at Layer 2 is a network function performed by protocols like CDP or LLDP, not by version control systems.

The specific factual error: The GET URI is missing ?content=nonconfig, and the Accept header should be application/yang-data+json. The error for wrong Accept is 406, not 404.

The specific factual error: The YANG module path should be ietf-interfaces:interfaces/interface=..., not Cisco-IOS-XE-native:interface/.... The error for wrong path is 404, not 406.

The specific factual error: The Accept header must be application/yang-data+json; application/json is not acceptable and returns 406, not 404.

The specific factual error: 'logging trap 7' is not a valid Cisco IOS command; the correct command uses the keyword 'debugging'. Also, the NTP server command alone does not fix the source interface issue.

The specific factual error: 'logging trap warnings' only sends messages with severity 0-4, missing severity 5-7 (notifications, informational, debug).

The specific factual error: 'ntp update-calendar' is not needed for NTP synchronization; the source interface is the key missing piece. 'logging trap informational' does not include debug messages.

Incorrect because programming forwarding tables on switches is a southbound API function, not northbound.

Incorrect because a physical management port does not define API direction and is unrelated to northbound or southbound APIs.

Incorrect because wireless uplinks are physical connections and do not represent API communication directions.

Option A incorrectly suggests that tokens replace the need for an IP address on the client. IP addresses are fundamental for network communication and routing, and tokens do not substitute for them. This misunderstanding confuses network-layer addressing with application-layer authentication.

Option C incorrectly claims that tokens encrypt every packet at Layer 1. Tokens are not encryption mechanisms and do not operate at the physical layer. Encryption is handled by separate protocols such as TLS or IPsec.

Option D falsely asserts that tokens change HTTP from a stateless protocol to a routing protocol. HTTP remains stateless, and tokens enable session continuity without altering the protocol’s fundamental nature. Routing protocols are unrelated to token use.

Predictive analytics forecasts future network conditions (e.g., link utilization trends) but does not automatically reconfigure devices; automation requires separate closed-loop systems like Cisco DNA Assurance with RMA (reactive, proactive, predictive) workflows. The statement incorrectly combines prediction with automatic reconfiguration.

ML models in network operations can be trained using both supervised learning (labeled data for known attacks) and unsupervised learning (unlabeled data to discover unknown patterns). The statement incorrectly claims exclusive use of labeled datasets, ignoring unsupervised anomaly detection which is critical for identifying novel threats.

Rule-based systems are static and cannot adapt to new, unknown patterns without manual rule updates. ML models, especially unsupervised learning, excel at detecting anomalies without predefined rules. The statement reverses the strengths of rule-based and ML approaches.

This describes direct device communication or southbound APIs, not the northbound API used by orchestration.

Northbound APIs are logical software interfaces, not physical cable standards or hardware.

Capacity forecasting using ML is not listed as a core application in objective 5.1; it is a more advanced AIOps use case.

Automatically generating configs via NLP is not a core application in objective 5.1; it is not covered at CCNA level.

Reinforcement learning for routing optimization is not a core AI/ML application described in objective 5.1; it is beyond scope.

Predictive analytics forecasts future traffic volumes but does not establish a dynamic baseline for normal behavior; thus, it cannot adapt to daily variations and would not reduce false positives from current traffic patterns.

Intent-based networking automates policy deployment and verification based on business intent, but it does not analyze traffic patterns or adapt alert thresholds; therefore, it does not directly reduce false positive alerts from monitoring systems.

Deep packet inspection with static rules can detect known threats but cannot adapt to new or evolving traffic patterns; thus, it would not reduce false positives from normal traffic variations and may even increase them due to rigid rules.

SNMPv3 provides significantly higher security than SNMPv2c by adding authentication and encryption, whereas SNMPv2c uses only community strings in clear text. Both versions support traps, so the statement incorrectly claims SNMPv3 has additional trap support, which is not a distinguishing feature.

SNMPv2c supports GET, SET, and trap operations, just like SNMPv1 and SNMPv3. The statement is incorrect because it claims SNMPv2c does not support traps, which is false; traps are a key feature for asynchronous notifications in network monitoring.

SNMPv3 uses the User-based Security Model (USM) with usernames and authentication keys, not community strings. Community strings are a feature of SNMPv1 and SNMPv2c, which are transmitted in clear text and provide weak security.

Closed-loop remediation is defined by autonomous execution without manual approval for standard actions.

AI agents rely on continuous telemetry and machine learning, not solely static baseline configurations, to detect anomalies.

AI agents reduce but do not eliminate the need for human oversight, especially for policy exceptions and strategic decisions.

Option B is incorrect because RESTful APIs do not require Layer 2 adjacency; they operate over routed IP networks, allowing clients and servers to communicate across different subnets.

Option D is incorrect because RESTful APIs do not replace routing protocols; they provide programmable access to device functions but do not handle routing or forwarding decisions.

SNMPv2c uses a pull model where the manager polls devices for data. Frequent polling intervals increase CPU usage on network devices and can cause scalability issues with thousands of devices, making it unsuitable for high-frequency, real-time data collection with minimal overhead.

NetFlow is designed for traffic flow analysis, capturing details like source/destination IPs and ports, not for collecting device health metrics such as CPU or memory. Its export mechanism can be CPU-intensive and does not provide the push-based efficiency needed for real-time monitoring of device status.

IPFIX is an extension of NetFlow for flexible flow export and shares the same focus on traffic flows, not device health metrics. Like NetFlow, it does not offer the push-based, low-overhead data delivery required for real-time monitoring of thousands of devices.

This option is incorrect because CLI output is specifically designed to be human-readable; the problem is not readability but the lack of structured data suitable for software parsing.

This option is incorrect because APIs still require authentication and authorization to secure network access; they do not remove the need for security controls.

This option is incorrect because orchestration software commonly uses HTTPS-based APIs for secure communication; the inability to use HTTPS is not a valid reason for preferring APIs over CLI.

The specific factual error: The 'lines' parameter should only contain the configuration commands to be applied under the parent context, not the parent command itself.

The specific factual error: The ios_command module does not handle configuration mode properly and is not intended for configuration tasks; it sends commands and returns output without state management.

The specific factual error: The 'parents' parameter expects the exact command that enters the configuration context, such as 'interface GigabitEthernet0/0', not just the interface name.

The specific factual error: SNMPv3 user is configured with MD5 and DES instead of SHA and AES 128; community strings are missing RO/RW keywords.

The specific factual error: The v2c trap host uses 'private' instead of 'public' community string.

The specific factual error: NetFlow export version is set to 5 instead of 9.

The group level 'auth' does not permit encryption; 'priv' is required for AES-128 encryption.

The encryption algorithm specified is DES (56-bit) instead of AES-128.

NetFlow export version is 5, not 9 as required.

This statement is incorrect because CLIs remain essential for tasks that require human judgment, such as debugging complex issues, interactive configuration, and learning device behavior. APIs complement but do not replace CLIs, as many operational scenarios benefit from direct human interaction.

This is incorrect because CLIs are widely used for monitoring, troubleshooting, and ad-hoc inspection beyond initial configuration.

This statement is incorrect because structured data (e.g., JSON, XML) is commonly returned by both APIs and modern CLIs (e.g., via 'show' commands with formatting options) to facilitate machine parsing and automation. Returning structured data is a best practice for integrating network devices with management systems.

Ansible is the tool known for push-based orchestration; Puppet and Chef rely on agent-initiated pull cycles.

Mixing up the DSL/language associations: Ansible = YAML, Chef = Ruby, Puppet = Puppet DSL (declarative).

This error stems from confusing the agentless nature of Ansible with the agent-based architecture of Puppet/Chef.

The specific factual error is that 'show ip route ospf' shows only existing OSPF routes, not neighbor states. Redistribution is not needed for directly connected interfaces in the same OSPF area.

The specific factual error is that debugging is not the initial diagnostic step; it should be used after verifying neighbor states and interface parameters. Changing the router ID is unnecessary unless there is a duplicate router ID issue.

The specific factual error is that 'show ip protocols' does not display per-interface OSPF parameters. The problem is likely at the interface level, not the process level.

The admin-status is 'up', which means the interface is not administratively shut down. A shut down interface would show admin-status as 'down'.

An interface operating normally would have oper-status 'up'. The oper-status 'down' indicates the interface is not passing traffic, so it is not functioning normally.

A loopback interface is a virtual interface that is always up/up (admin up, oper up) unless administratively shut down. The JSON shows oper-status 'down', which is not typical for a loopback.