Cisco DevNet Associate 200-901 Practice Questions

RESTful APIs do not provide a user interface; they are designed for communication between systems.

While RESTful APIs can be used to interact with data storage, their primary purpose is not data storage itself.

While security can be an aspect of RESTful APIs, their primary purpose is focused on enabling communication, not specifically on security.

While security is critical, automation is not directly tied to enhancing protocols specifically.

While automation can lead to cost reductions, the key benefit is more about efficiency and error reduction.

User experience may improve indirectly, but it is not the primary benefit associated with automation in network management.

This option incorrectly defines CI/CD; it mixes up terms that do not reflect the CI/CD practices.

This option is misleading, as it simplifies the CI/CD concept and does not capture its full scope.

This option inaccurately combines terms, as CI/CD focuses on both integration and deployment, not just code deployment.

'function' is not a keyword in Python; 'def' is the correct keyword to define a function.

'define' is not a keyword in Python; 'def' is the correct keyword to define a function.

'func' is not a keyword in Python; 'def' is the correct keyword to define a function.

HTTP is primarily used for transferring web pages and is not designed for network device management.

File Transfer Protocol (FTP) is used for transferring files, not for managing network devices.

Telnet is used for remote access to devices but is not primarily for management and monitoring.

The data plane does not configure devices; that is the role of the control plane.

Monitoring is typically handled by management systems, not the data plane itself.

Establishing policies is the responsibility of the control plane, not the data plane.

The TCP/IP Model is a simpler framework but does not describe as many layers as the OSI Model.

The Physical Layer Model focuses solely on the physical connection and does not encompass the full range of networking and application interactions.

The Network Layer Model only addresses one specific layer of networking and does not provide a complete overview of application interactions.

This describes a monolithic architecture, not microservices.

Microservices are designed to be loosely coupled, allowing for independent development and deployment.

Microservices usually avoid shared databases to reduce dependencies between services.

This answer is incorrect because IaC specifically pertains to infrastructure management, not team organization.

This answer is incorrect because IaC is not a monitoring tool; it focuses on infrastructure management through code.

This answer is incorrect because IaC is not a programming language; it is a practice for managing infrastructure.

XML is also used for data interchange but is less common than JSON in modern web services due to its verbosity.

CSV (Comma-Separated Values) is primarily used for tabular data and is not typically used for web services.

YAML is a data serialization format that is less common than JSON for data interchange in web services.

Webhooks are not primarily used for transferring large amounts of data; they are more about event notifications.

Webhooks operate on real-time events, not on a scheduled basis.

While webhooks can be used to report errors, their primary function is to notify about events, not specifically for error reporting.

JavaScript is typically used for web development and is not commonly used for scripting in Cisco devices.

Ruby is not a standard language for Cisco device scripting; Python is preferred for this role.

While Perl can be used for scripting, it is not as widely adopted in Cisco environments as Python is.

Version control systems do provide some security features, but their main purpose is to manage changes and collaboration rather than solely to store code securely.

While version control can help minimize code duplication, its main function is not specifically about preventing duplication but rather about managing changes to the codebase.

Version control systems do not directly improve software performance; they primarily focus on tracking changes and collaboration among developers.

CRUD does not use 'Remove'; it uses 'Read' instead.

CRUD does not use 'Upload'; it uses 'Update' instead.

CRUD does not use 'Download'; it uses 'Delete' instead.

The forwarding of data packets is managed by the data plane, not the control plane.

The physical layer is part of the data plane, while the control plane focuses on logical functions and routing.

While security is important, the control plane's main role is in routing and signaling, not specifically security protocols.

Docker is primarily a platform for developing and running containers, but it does not directly manage them at scale like Kubernetes does.

Apache Mesos is a cluster manager that can run containerized applications, but it is not specifically a container orchestration technology like Kubernetes.

OpenShift is a container application platform based on Kubernetes, but it is not the primary technology for managing containerized applications itself.

JWTs do not focus on design but on secure information transmission.

JWTs do not store data; they are used for authentication and information exchange.

JWTs do not directly impact loading times; they serve a different purpose related to security.

This is incorrect because SDN does not refer to Structured Data Network.

This is incorrect; SDN does not mean System Development Network.

This answer is incorrect as SDN does not refer to Secure Data Network.

The urllib module is part of the standard library, but it is less user-friendly compared to the Requests library for making HTTP requests.

http.client is a lower-level module for making HTTP requests, but it is not as commonly used as the Requests library.

aiohttp is used for making asynchronous HTTP requests, but it is not the most commonly used library compared to Requests.

A load balancer distributes incoming traffic among multiple servers but does not specifically manage API requests or microservices communication.

A service registry keeps track of available services in a microservices architecture but does not serve as a gateway for managing requests.

A database connection refers to how applications interact with databases and does not pertain to managing API requests in microservices.

While REST primarily uses JSON and XML, SOAP's ability to work with various formats is a characteristic of its flexibility in data representation.

Both REST and SOAP can implement security measures, but REST is not limited to HTTPS, and SOAP can also use WS-Security for additional security features.

SOAP APIs are generally considered heavier due to their XML messaging, whereas REST APIs are designed to be more resource-efficient.

Load balancing is related to distributing network traffic but does not directly explain the concept of service discovery in microservices.

An API gateway is a pattern for managing access to microservices but does not specifically address how service discovery works.

Service scaling refers to adjusting the number of service instances based on demand, which is separate from the service discovery process.

This option misrepresents the primary function of a load balancer, which focuses on traffic distribution rather than security filtering.

This is not a function of a load balancer; caching is typically managed by other systems like content delivery networks (CDNs).

While load balancers can provide some insights into server performance, their main role is traffic distribution, not performance monitoring.

The 'requests' library can handle JSON responses, but its primary function is to make HTTP requests, not specifically handle JSON data.

The 'requests' library does not manage databases; it is focused on HTTP requests.

While 'requests' can be used in web applications, it does not create them; it is primarily for making HTTP requests.

Docker can be used for microservices, but its primary significance lies in its ability to ensure consistency across environments.|

Docker actually runs in a containerized environment, which may add some overhead compared to running directly on the host OS.|

Docker can be used in conjunction with cloud services, but it does not eliminate the need for them in deployment processes.|

PuTTY is a terminal emulator, not a command-line interface specific to Cisco devices.

SSH is a protocol used for secure access, but it's not a command-line interface itself.

Tera Term is a terminal emulation program, not specifically a command-line interface for Cisco devices.

Unit testing focuses on individual components, not the overall performance of the software application.

User feedback is typically collected through beta testing or user acceptance testing, not unit testing.

While documentation is important, unit testing specifically aims to verify the correctness of individual components rather than serving as documentation.

Environment variables can indeed store sensitive information, but this is not their primary function in enhancing application configuration.

Hardcoding values is contrary to the purpose of environment variables, which aim to separate configuration from code.

While environment variables can simplify deployment, the key enhancement they provide is flexibility in configuration across different environments.

Latency is about delay, not the capacity of data transfer.|

Latency specifically measures the delay, not the volume of data.|

Reliability is a different metric, whereas latency focuses on time delays.

While this is true, it is not the primary benefit of CI in the software development lifecycle.

This statement is incorrect; CI relies on version control systems to manage code changes effectively.

This is inaccurate; CI actually streamlines the development process by allowing quicker feedback and faster releases.

APIs are not primarily focused on providing security; they are more about enabling communication.

While APIs can be used in monitoring tools, their main function is not specifically to monitor performance.

APIs can assist in configuration management but their primary function is broader, focusing on communication between applications.

SSH is mainly used for secure shell access and is not designed for securing RESTful API communications.

FTP is a file transfer protocol that does not provide secure communication for API interactions.

TCP is a transport layer protocol that does not inherently provide security for RESTful APIs without additional protocols like TLS.

A message broker does not primarily store data; its main function is to facilitate message passing between services.

While user authentication can be part of a microservices architecture, it is not the primary role of a message broker.

Monitoring service performance is typically handled by other tools, not by the message broker itself.

NFV encompasses a wide range of network functions, not limited to security.

Traditional networking often requires more physical hardware, which can lead to higher costs in terms of equipment and maintenance.

In fact, NFV is designed to work in cloud environments, enhancing scalability and flexibility.

Using global packages can lead to version conflicts and is not recommended; virtual environments provide a better solution for managing dependencies.

Performance is not directly affected by using a virtual environment, as they primarily serve to manage libraries and dependencies.

While debugging can be easier when dependencies are isolated, the virtual environment itself does not directly simplify debugging processes.

This is not a valid command for installing packages from PyPI.

This phrase confuses the installation of Python itself with package management.

This is not a recognized command for installing Python packages.

Asynchronous programming does not inherently increase memory usage; it often helps manage resources more efficiently.

Asynchronous programming can complicate code structure due to the need for callbacks or promises, rather than simplifying it.

While asynchronous programming helps manage concurrency, it does not reduce network latency, which is determined by network conditions rather than programming model.

A tool for managing documentation is not what is meant by 'pipeline' in CI/CD.

A programming language is unrelated to the concept of a pipeline in the context of CI/CD.

A database is not related to the CI/CD pipeline concept, which focuses on automation of development processes.

This is incorrect because a service mesh does not manage databases; it focuses on service-to-service communication.

This is incorrect as a service mesh does not deal with user interfaces; it manages network traffic between services.

This is incorrect because caching is not a primary function of a service mesh, which is focused on service communication and management.

Throttling is not primarily about prioritizing requests but rather about controlling the overall volume of traffic.

While blocking may be a consequence of throttling, it is not the main function of throttling in traffic control.

Throttling does not involve increasing server capacity; it is about managing the flow of requests to existing resources.

This option is incorrect because resource allocation is typically handled by other components, not a network policy engine.

While monitoring is important, it is not the primary function of a network policy engine in a cloud-native environment.

This option is incorrect as data backup and recovery are not functions associated with a network policy engine.

Ansible's architecture does not directly relate to network configuration automation; it's a feature rather than a method.

Ansible is versatile and can manage both cloud services and network devices, making it suitable for automating network configuration.

Ansible utilizes simple YAML playbooks, making it user-friendly and not reliant on complex scripting.

While encryption can be a feature, it is not the primary role of a reverse proxy.

Caching is a function that may be performed by a reverse proxy, but it is not its main role.

Session management and authentication are typically handled by application servers, not specifically by reverse proxies.

An endpoint does not refer to data format; it refers to the location for accessing resources.

Authentication methods are separate from endpoints, which are locations for accessing resources.

An API request type is different from an endpoint, which is a specific URL for resource access.

Using OAuth 2.0 does not inherently simplify API requests; it mainly focuses on secure authentication and authorization.

While OAuth 2.0 improves security, it does not eliminate all security issues; vulnerabilities can still exist if not implemented correctly.

OAuth 2.0 actually reduces the need for users to register for multiple services by allowing them to use existing credentials from a trusted provider.

Container orchestration does not focus on simplifying coding; it manages deployment and scaling instead.

While security can be a concern, orchestration tools primarily focus on deployment management rather than directly enhancing security protocols.

Orchestration tools aim to reduce manual intervention, not increase it, making deployments more efficient and automated.

Mutable infrastructure implies that servers can be modified and updated, which is the opposite of the immutable approach.

Dynamic infrastructure suggests flexibility and changes, which contradicts the principle of immutability.

Static infrastructure does not accurately capture the concept of replacing rather than modifying servers in DevOps practices.

A service registry does not directly perform load balancing, though it can facilitate it by providing service instance information to load balancers.

While configuration management is important in microservices, it is not the primary purpose of a service registry which focuses on service discovery.

Monitoring and logging are crucial for microservices but are separate concerns from the main function of a service registry which is to manage service instances.

Telemetry data is not focused on storage; it's more about monitoring and analyzing network performance.

While user experience is important, telemetry data encompasses much more, including network health and performance metrics.

Telemetry data is crucial for effective network management as it informs decisions and optimizations.

The codebase is an important factor but not the only key principle of the Twelve-Factor App methodology.

Dev/prod parity is a principle, but it is not the only key principle of the Twelve-Factor App methodology.

While processes are important, they do not encompass all the key principles of the Twelve-Factor App methodology.

Improving database performance is not the primary function of SOA; it focuses on service communication rather than database optimization.

While SOA can lead to faster development through reusable services, its primary function is about service communication rather than merely reducing development time.

Enhancing user interface design is not related to the primary function of SOA, which is more concerned with backend service interactions than frontend design.

This command lists the status of all services but does not provide detailed information about a specific service.

This command is not valid; the correct command is `systemctl status` to check the service status.

While you can use `service` to manage services, `service status` is not a standard command; the correct usage would be `service status`.

This statement is incorrect because load testing tools focus on performance metrics rather than security vulnerabilities.|

This statement is incorrect as load testing tools focus on measuring performance, not documentation.|

This statement is incorrect because load testing tools mainly assess performance, not code quality.

The circuit breaker pattern is designed to reduce latency by stopping calls to failing services rather than increasing it.

While communication is important in microservices, the circuit breaker pattern specifically addresses fault tolerance and service failure management, not communication facilitation.

The circuit breaker pattern is focused on preventing cascading failures rather than ensuring data consistency across services.

While specifying a data format (like JSON or XML) is important, it is not considered a key component of RESTful API design, which primarily focuses on resource identification, statelessness, and HTTP methods.

Data lakes typically support various querying methods, including SQL, although the querying can be more complex than in traditional databases.

The cost of a data lake versus a traditional database can vary depending on the implementation and scale, so it is not universally more expensive.

Traditional databases can also support real-time data processing depending on their configuration and use case.

A VPC does not inherently improve network speed, as speed depends on various other factors such as bandwidth and latency.

While VPCs can help manage costs, their primary significance lies in security and resource isolation rather than cost reduction.

A VPC actually complicates access to some public cloud services by creating a private network layer that may require additional configuration.

APIs are not concerned with user interface design; their focus is on data exchange.

APIs do not manage databases directly; they act as intermediaries for data requests.

While security can be part of an API's design, its primary role is facilitating communication, not encryption itself.

This is incorrect because zero trust emphasizes verifying every user and device rather than relying on perimeter security.

This is incorrect as zero trust restricts access based on strict verification, not unrestricted access.

This is incorrect as zero trust is not specifically about using AI; it focuses on strict access controls and verification rather than predictive modeling.

Logging and monitoring tools primarily focus on tracking and analyzing application behavior rather than directly improving speed.

While logging and monitoring can help identify inefficiencies, they do not inherently lower operational costs; rather, they support better resource management.

Logging and monitoring facilitate understanding user interactions but do not directly correlate with feature updates or user experience improvements.

GraphQL's schema definition provides a clear contract between the client and server, but REST APIs can also be well-defined without a strict schema.

While GraphQL supports subscriptions for real-time updates, REST can implement real-time features using technologies like WebSockets or long polling as well.

GraphQL operates through a single endpoint for all queries and mutations, but REST APIs typically have multiple endpoints for different resources, which can be advantageous in certain scenarios.

DevOps actually promotes cross-functional teams and collaboration, rather than strict separation.

While automation is a key aspect of DevOps, the culture itself is more focused on collaboration rather than reducing tool usage.

DevOps aims to balance speed with quality and collaboration between teams, not just speed alone.

Monitoring network performance is typically handled by network monitoring tools, not configuration management tools.

Generating network traffic reports is usually the function of network analysis tools, not configuration management tools.

While compliance can be a result of configuration management, it is not the primary purpose of such tools in network automation.

Serverless architecture offloads server management to the cloud provider, eliminating the need for users to manage physical servers.

While serverless can utilize containers, it specifically refers to a model where the cloud provider handles the server infrastructure.

Serverless architecture actually enables automatic scaling, allowing applications to handle varying loads without manual intervention.

API documentation tools primarily focus on documentation rather than automating code generation.

Swagger does not directly enhance security features; it focuses on documentation and usability.

API documentation tools do not influence server load during API calls; they serve to document and explain the API instead.

Container instances are the running instances created from container images, not the images themselves.

Docker Compose files are used to define and run multi-container Docker applications, not directly related to the difference between images and instances.

Virtual machines are separate from containers; they virtualize hardware rather than applications and do not represent the difference between container images and instances.

This is incorrect because orchestration encompasses more than just monitoring; it includes deployment and management tasks as well.|

This is incorrect as orchestration tools do not involve coding but rather the management of already developed services.|

This is incorrect because orchestration tools are meant for managing existing services, not creating them.

Network segmentation primarily focuses on security, not bandwidth.

While segmentation may simplify some aspects, its main purpose is security, not management.

The primary benefit of segmentation is security, not improving data transmission speed.

This is incorrect because machine learning enhances monitoring but does not replace hardware.

This is incorrect because machine learning can also optimize traffic management and anomaly detection.

This is incorrect because machine learning can analyze data in real-time to prevent failures before they happen.

This statement is incorrect because efficiency depends on the specific use case rather than the statefulness itself.

This statement is incorrect because stateless applications do not retain any user data between requests.

While often true, this statement is not universally applicable and does not define the difference between the two types of applications.

This is not a function of WebSocket; it focuses on communication rather than data storage.

WebSocket is designed for dynamic, real-time data exchange, not for delivering static content.

While WebSocket can be part of a session, its primary function is to facilitate real-time communication rather than manage sessions.

URL versioning can help manage different versions but does not inherently ensure backward compatibility unless designed carefully.

Header versioning allows clients to specify the desired version but does not guarantee backward compatibility without careful management of changes.

Not using any versioning can lead to breaking changes that impact existing clients, making it difficult to maintain backward compatibility.

This option describes a benefit of DevOps in general but does not specifically address the role of Continuous Deployment.

This option is incorrect because Continuous Deployment emphasizes automation, reducing the need for manual reviews.

While monitoring is important in DevOps, it is not the primary role of Continuous Deployment, which focuses on the automation of the release process.

The readline method reads a single line from the file, not the entire content.

The readlines method reads all lines from the file and returns them as a list, not as a single string.

There is no get method for reading files in Python; the correct method is read.

Data encryption is a separate aspect of network security, not the main purpose of NFV.|

NFV actually aims to reduce hardware needs, not increase them.|

NFV decentralizes services, distributing them over virtualized environments instead of centralizing them.

A simplified codebase does not directly relate to scalability; it is more about performance and resource management.

In fact, distributed architectures often require sophisticated load balancing to manage traffic effectively.

This statement is false; a distributed architecture can support more simultaneous users by distributing the load across multiple nodes.

A message queue does not directly improve database performance; instead, it facilitates communication between different application components.

While message queues can facilitate near real-time processing, they do not guarantee it, as processing speed depends on the consumers and their configuration.

A well-implemented message queue actually helps eliminate single points of failure by allowing for redundancy and load balancing.

This statement is incorrect as elasticity specifically pertains to resource scaling, not the geographical aspect of data centers.

This statement is incorrect because elasticity is about resource scaling and not related to security measures in cloud services.

This statement is incorrect; elasticity involves dynamic scaling, not fixed capacity.

This approach does not align with the canary strategy, which focuses on gradual rollout and risk mitigation.

While testing is important, canary deployments specifically involve testing in production with real users.

This does not capture the essence of canary deployments, which is about risk management through gradual exposure.

Encryption is typically handled by other security measures, not firewalls.|

Firewalls do not provide backup; they focus on traffic filtering and security.|

While logging can aid in compliance, it is not the primary function of a firewall. |

APIs do not restrict access; instead, they enable controlled access to network resources for automation purposes.

APIs do not directly impact hardware costs, as they are software interfaces designed for communication, not hardware components.

APIs enhance the functionality and automation of existing devices but do not replace them; they work with the current infrastructure.

This is incorrect because event-driven architecture emphasizes asynchronous communication to improve responsiveness.

This statement is incorrect as event-driven architecture encourages loose coupling, enabling better modularity.

This misconception ignores that even smaller applications can benefit from the responsiveness and flexibility of an event-driven model.

A reverse proxy can enhance security, but its primary purpose in load balancing is to distribute requests, not to hide server identities.

While caching can be a function of a reverse proxy, it is not the main purpose related to load balancing.

SSL termination is a function of a reverse proxy, but it does not directly relate to the core purpose of load balancing.

Configuration drift is not about software updates but rather the changes in configuration settings that may occur without proper tracking.

This statement is incorrect as configuration drift is not related to backups but rather to the changes in configurations over time.

While auditing may involve checking for drift, the term specifically refers to the unintended changes in configurations rather than the auditing process itself.

A service mesh does not deal with database management; it focuses on service-to-service communication.

While security is a benefit of a service mesh, it is not the only significance; observability is also a key factor.

A service mesh does not manage scaling; it manages communication between services.

Webhooks are specifically designed to facilitate real-time communication, not just logging.|

Webhooks work asynchronously; one application can send a request to another without both being online at the same time.|

Webhooks are a type of API that does allow for real-time updates by pushing information when events occur.

While IaC can contribute to security, its primary benefit is automation in provisioning.

Cost reduction can be a benefit, but it is not the primary focus of IaC.

User experience is typically influenced by application design, not directly by IaC.

This is incorrect because mTLS does both: it encrypts data and verifies identities.

This is incorrect as mTLS is primarily used for securing API communications, not specifically for user login.

This is incorrect because mTLS adds an extra layer of security that is difficult to bypass.

Logs stored locally can lead to fragmented data, making it difficult to analyze issues that affect multiple services.

Centralized logging does not fix errors; it only helps in identifying and diagnosing them.

While it can help in identifying performance issues, centralized logging does not inherently improve application performance.

Taking an application offline increases downtime, which blue-green deployments aim to minimize.|

While they do require extra resources for maintaining two environments, the benefits of reduced downtime often outweigh these costs.|

In fact, blue-green deployments streamline the process by allowing for quick rollbacks and less manual intervention, thus enhancing efficiency.|

Centralized management is a component but not the sole key concept of SDN.

While programmability is important, it is not a standalone key concept of SDN.

OpenFlow is a protocol used in SDN but does not represent the entirety of its key concepts.

Containerization is designed to improve portability by allowing applications to run on any system that supports the container runtime.|

Containerization can enhance portability for any type of application, not just microservices, by standardizing the environment.|

Containerization simplifies deployment by providing a consistent environment, thus improving portability rather than complicating it.|

Service meshes do not focus on data storage; their primary role is in managing communication between services.|

Increasing server count does not relate to the purpose of a service mesh, which is about managing interactions between microservices.|

User interface design is unrelated to the functionalities provided by a service mesh in microservices architecture.|

Rate limiting does improve overall system security by controlling traffic, but its primary purpose is to manage request volume.|

Rate limiting is important for both public and private APIs to maintain stability and performance.|

This is incorrect; rate limiting specifically restricts the number of requests to prevent overload and abuse.

Monitoring does not directly involve configuring or managing network devices, which is the primary role of configuration management tools.

User access control focuses on security and permissions rather than automating configuration and management of network devices.

Data backup is related to data protection and recovery, not to the configuration management of network devices in automation.

Private APIs are not accessible to the general public, but they are designed for specific users or applications.

Hybrid APIs combine elements of both public and private APIs, but the question specifically asks about the difference between public and private APIs.

Open APIs are another term for public APIs, so this option does not accurately address the question about the differences between public and private APIs.

Latency does not improve data transfer speeds; it generally causes delays instead.

Latency is unrelated to bandwidth; higher bandwidth may reduce the impact of latency but does not eliminate it.

Latency does not enhance scalability; it can actually limit the performance of applications as they scale.

It does not specifically address application reliability, which is more about performance and uptime.

While collaboration is important, it does not directly impact the reliability of applications.

Updating code is a separate process and is not wholly reliant on monitoring.

TLS/SSL is actually widely used to secure API communications, not just email.

While there might be some overhead, the security benefits of using TLS/SSL outweigh the performance costs in most cases.

While TLS/SSL does help in securing communications, it does not enforce authentication methods on its own.

This statement is incorrect because microservices are designed to break down applications into smaller, independent services.

This is incorrect as microservices can use decentralized databases, which enhances flexibility and scalability.

While it may introduce complexity, it ultimately simplifies scaling and flexibility by allowing teams to work on services independently.