View Full Cisco CCNP 300-435 Exam Dumps and Practice Test Dumps

 

Question 101.

Which Python structure stores paired keys and values?

1. Dictionary
2. Tuple
3. Set
4. Generator

Correct Answer: 1

Explanation:

A Python dictionary stores data as key-value pairs, making it useful for structured network information. For example, device names can serve as keys while management addresses, credentials, or interface details are stored as corresponding values. Dictionaries are especially useful when automation scripts need to access specific attributes quickly. Tuples and lists organize sequences, while sets store unique elements without key-value relationships. Generators produce values dynamically rather than maintaining key-value mappings. In Cisco network automation, dictionaries frequently represent API responses, configuration parameters, device metadata, and structured payloads.

Question 102.

Which HTTP status indicates a forbidden request?

1. 404 Not Found
2. 403 Forbidden
3. 500 Server Error
4. 302 Redirect

Correct Answer: 2

Explanation:

HTTP status code 403 indicates that the server understood the request but refuses to authorize access to the requested resource. In network automation, a 403 response can occur when an authenticated automation account lacks sufficient permissions for an API operation. This differs from 401, which generally indicates missing or invalid authentication credentials. A 404 means the requested resource cannot be found, while 500 represents a server-side failure. Automation scripts should handle authorization failures separately because retrying the same request without changing permissions generally will not resolve the problem.

Question 103.

Which protocol provides secure remote CLI access to network devices?

1. Telnet
2. FTP
3. SSH
4. TFTP

Correct Answer: 3

Explanation:

SSH provides encrypted remote command-line access to network devices and is widely used in network automation. It protects authentication credentials and session data from being transmitted as plain text. Automation frameworks and Python libraries can use SSH to establish sessions and execute commands or transfer information securely. Telnet does not provide encryption, while FTP and TFTP are primarily file-transfer protocols rather than remote CLI protocols. In automated environments, SSH is commonly integrated with tools such as Netmiko, Paramiko, and Ansible to manage supported infrastructure.

Question 104.

Which Ansible file commonly defines managed hosts and groups?

1. playbook.yml
2. roles.yml
3. ansible.cfg
4. inventory

Correct Answer: 4

Explanation:

The Ansible inventory identifies managed hosts and organizes them into groups. It can contain IP addresses, hostnames, connection variables, and group-level information used by playbooks. Inventory files may use INI or YAML syntax depending on the environment and configuration. The playbook defines automation tasks, while ansible.cfg contains Ansible configuration settings. Roles provide reusable automation structures but do not serve as the primary host inventory. Proper inventory organization helps automation target specific device groups consistently and supports scalable network management.

Question 105.

Which Python library commonly handles regular expressions?

1. re
2. csv
3. pathlib
4. socket

Correct Answer: 1

Explanation:

Python’s re module provides regular-expression functionality for searching, matching, and manipulating text patterns. Network automation scripts can use regular expressions to extract values from command output, identify interface information, validate structured strings, or locate specific configuration lines. The csv module works with comma-separated data, pathlib manages filesystem paths, and socket provides low-level networking functionality. Although structured APIs and parsing libraries are generally preferable when available, regular expressions remain useful when automation must process semi-structured text returned by legacy command-line interfaces.

Question 106.

Which NETCONF operation retrieves configuration data?

1. lock
2. get
3. commit
4. copy-config

Correct Answer: 2

Explanation:

The NETCONF get operation retrieves both configuration and operational state information from a device, depending on the requested data scope. It can be combined with filters to obtain only relevant portions of the datastore. This makes NETCONF useful for structured network management instead of relying exclusively on CLI output parsing. lock controls datastore access, commit finalizes candidate configuration changes on systems supporting that workflow, and copy-config copies configuration between datastores. Understanding these operations helps automation scripts interact predictably with NETCONF-enabled devices.

Question 107.

What does idempotent automation aim to achieve?

1. Random configuration changes
2. Continuous device rebooting
3. Consistent desired state
4. Manual command execution

Correct Answer: 3

Explanation:

Idempotent automation aims to produce the same intended state even when an operation is executed multiple times. This behavior is valuable because automation workflows may be rerun after failures, during scheduled reconciliation, or across large device groups. Instead of blindly issuing commands, an idempotent process determines whether the desired state already exists and changes the system only when necessary. This reduces unnecessary modifications and improves predictability. Declarative tools such as Ansible emphasize desired-state management, making idempotency an important principle for reliable network automation.

Question 108.

Which HTTP method is commonly used to partially modify a resource?

1. PATCH
2. TRACE
3. HEAD
4. OPTIONS

Correct Answer: 1

Explanation:

The HTTP PATCH method is commonly used when an API client needs to modify part of an existing resource rather than replacing the entire resource representation. In network automation, PATCH can be useful when an API exposes individual attributes that can be updated independently. PUT is generally associated with replacing or fully updating a resource representation, while GET retrieves information. TRACE and OPTIONS serve different HTTP purposes. Selecting the appropriate method is important because APIs may enforce specific semantics for each operation, and incorrect methods can result in failed automation requests.

Question 109.

What does Ansible use to render dynamic configuration templates?

1. XML schemas
2. Jinja2 expressions
3. SQL statements
4. Markdown syntax

Correct Answer: 2

Explanation:

Ansible commonly uses Jinja2 templating to generate dynamic configuration files and command parameters. Variables, conditional expressions, loops, and filters can be incorporated into templates so that one template can produce different configurations for different devices or environments. This supports reusable automation while reducing duplicated configuration files. XML schemas validate XML structures, SQL statements interact with databases, and Markdown provides document formatting. In network automation, Jinja2 is especially useful when device-specific values such as interface addresses, routing parameters, or hostnames need to be inserted into standardized templates.

Question 110.

Which mechanism can prevent concurrent configuration conflicts?

1. Data compression
2. Packet mirroring
3. Datastore locking
4. DNS caching

Correct Answer: 3

Explanation:

Datastore locking can prevent multiple management sessions from simultaneously modifying the same configuration datastore. In NETCONF-based environments, a lock helps ensure that an automation process can safely perform a sequence of configuration operations without another client changing the targeted datastore unexpectedly. This is particularly important in environments where several automation systems, administrators, or orchestration platforms interact with the same devices. Compression affects data size, packet mirroring copies traffic for analysis, and DNS caching improves name-resolution efficiency. Locking instead addresses coordination during configuration management.

Question 111.

Which Python statement handles exceptions during execution?

1. import
2. with
3. try
4. yield

Correct Answer: 3

Explanation:

Python uses the try statement together with except to handle exceptions that may occur during execution. Network automation frequently encounters runtime problems such as connection failures, invalid responses, authentication errors, or unavailable resources. Exception handling allows scripts to respond appropriately instead of terminating unexpectedly. For example, an automation workflow can catch a connection-related exception, record the affected device, and continue processing other devices. The import statement loads modules, with manages context-controlled resources, and yield creates generator behavior. Proper exception handling improves automation resilience.

Question 112.

Which API design principle exposes resources through predictable paths?

1. Resource-oriented URLs
2. Random endpoint naming
3. Hidden CLI aliases
4. Static screen layouts

Correct Answer: 1

Explanation:

Resource-oriented URLs provide predictable API paths representing identifiable resources. For example, an API might expose devices, interfaces, or policies through structured endpoint paths. This design makes automation easier because clients can construct requests consistently and understand how related resources are organized. RESTful APIs commonly use HTTP methods together with resource-oriented endpoints to represent operations such as retrieval, creation, modification, and deletion. Random endpoint naming makes automation harder to maintain because scripts must depend on irregular paths. Predictable resource modeling therefore supports reusable API clients and clearer integration workflows.

Question 113.

What is a primary purpose of network automation testing?

1. Increase cable length
2. Validate expected behavior
3. Disable monitoring
4. Remove documentation

Correct Answer: 2

Explanation:

Network automation testing validates that scripts, workflows, and integrations behave as expected before changes are introduced into production infrastructure. Tests can verify configuration generation, API interactions, input validation, exception handling, and desired outcomes. Automated testing reduces the risk of introducing errors through repeated manual changes and makes future modifications easier to evaluate. Depending on the workflow, unit, integration, functional, or end-to-end tests may be appropriate. Testing does not replace operational monitoring; instead, it complements monitoring by identifying problems before or during controlled deployment.

Question 114.

Which Git command creates a new branch from the current state?

1. git merge
2. git status
3. git branch
4. git stash

Correct Answer: 3

Explanation:

The git branch command can create a new branch from the current repository state when supplied with a branch name. Branches allow automation engineers to develop and test changes independently from the main development line. This is useful when modifying network automation scripts, templates, or configuration logic because experimental changes can be reviewed before integration. git merge combines branch histories, git status reports repository state, and git stash temporarily stores uncommitted changes. Using branches with code review provides an additional control point for automation development.

Question 115.

Which NETCONF feature enables selective data retrieval?

1. Filtering
2. Encryption
3. Compression
4. Fragmentation

Correct Answer: 1

Explanation:

NETCONF filtering allows a client to request only specific portions of available data instead of retrieving an entire datastore or operational tree. This is particularly useful when devices expose large configurations or substantial operational information. By limiting returned data to relevant elements, automation workflows can reduce unnecessary processing and make responses easier to handle. NETCONF supports filtering mechanisms associated with its data retrieval operations. Encryption protects communications, compression reduces transferred data size, and fragmentation concerns how data is divided during transmission. Filtering directly addresses selective information retrieval.

Question 116.

Which Python library is commonly used for HTTP API requests?

1. NumPy
2. Requests
3. Pillow
4. Tkinter

Correct Answer: 2

Explanation:

The Python Requests library provides a straightforward interface for making HTTP requests to REST APIs and other web services. Network automation scripts can use it to send GET, POST, PUT, PATCH, and DELETE requests while handling headers, authentication information, parameters, payloads, and responses. This makes Requests useful when interacting with controller APIs, management platforms, and cloud services. NumPy focuses on numerical operations, Pillow handles image processing, and Tkinter supports graphical interfaces. For API-driven automation, Requests simplifies communication with HTTP-based management systems.

Question 117.

Which automation approach describes the desired end state?

1. Imperative scripting
2. Manual operation
3. Declarative management
4. Interactive troubleshooting

Correct Answer: 3

Explanation:

Declarative management specifies the desired state rather than requiring the operator to describe every individual command needed to reach that state. The automation system determines which actions are necessary to reconcile the current condition with the desired configuration. This model can improve consistency and supports repeatable workflows across large environments. Imperative scripting explicitly defines procedural steps, while manual operation depends on human execution. Interactive troubleshooting is primarily focused on diagnosing problems. Declarative approaches are common in modern infrastructure automation because they emphasize outcomes and state reconciliation.

Question 118.

Which HTTP response commonly indicates successful resource creation?

1. 200 OK
2. 204 No Content
3. 201 Created
4. 304 Not Modified

Correct Answer: 3

Explanation:

HTTP status code 201 Created commonly indicates that a request successfully created a new resource. REST APIs may return this status after operations such as creating a device object, policy, user, or configuration resource. The response may also contain information about the newly created resource, such as its identifier or location. Status 200 indicates general success, 204 indicates successful completion without response content, and 304 indicates that a cached representation remains valid. Automation scripts should inspect response codes so they can distinguish successful creation from other successful or unsuccessful outcomes.

Question 119.

What does a CI pipeline commonly automate for network code?

1. Physical cable replacement
2. Automated validation
3. Console-room access
4. Hardware transportation

Correct Answer: 2

Explanation:

A continuous integration pipeline can automatically validate network automation code whenever changes are submitted. Typical stages may include syntax checking, linting, unit tests, security checks, template validation, and packaging. This provides rapid feedback before automation changes reach deployment environments. CI pipelines do not physically replace cables, provide console-room access, or transport hardware. Their purpose is software-oriented validation and controlled integration. For network automation teams, integrating testing into CI helps detect defects early and creates a repeatable quality-control process for scripts, modules, templates, and supporting infrastructure code.

Question 120.

Which practice keeps sensitive credentials outside source code?

1. Hard-coded passwords
2. Public configuration files
3. Plain-text comments
4. Secret management

Correct Answer: 4

Explanation:

Secret management keeps sensitive information such as passwords, API tokens, private keys, and other credentials outside ordinary source-code files. Automation systems can retrieve secrets securely at runtime from an approved secret-management mechanism or protected environment. This reduces the likelihood that credentials will accidentally appear in repositories, logs, or shared scripts. Hard-coded passwords and plain-text configuration expose sensitive information unnecessarily. Proper secret handling should also include access controls, rotation, auditing, and careful treatment of logs. Protecting credentials is an important security requirement for production network automation.