A developer creates a web application that receives a username and password and uses them to sync the credentials to other services through HTTPS. API keys to services are part of the configuration files of the application, but the credentials to the database that stores the synchronization logs are obtained through an external vault service. What is the security issue in this scenario?

Communication between the application and the services is not encrypted.

The database credentials should be stored in the configuration files so that they are secured on the same server.

The API keys are stored in the configuration files but should be stored in the vault service

The synchronization logs should be encrypted and not stored in a relational database

Refer to the exhibit. A Python code has been written to query a device. The executed code results in the error shown. Which action resolves the problem?

requests(ג€GETג€, base_url + request_url, cookies=cookies)

Refer to the exhibit. The script returns an output of 401. To use the supplied URL, an HTTP GET request must be sent with an Authorization header. The header value is a base64 encoded concatenation of the username and password. Which action must be taken to return an output of 200?

Modify the method from LOGIN to GET and supply the username:password value as JSON payload.

Change the verify=False setting in the request to verify=True to enable HTTP Basic authentication.

Verify that the username and password values imported from the configuration file are still valid.

Insert an Authorization header with the values username:password from the supplied configuration file.

In Python, which expression checks whether the script returns a success status code when the Requests library is used?

response.status_code == requests.codes .ok

response.code == requests.codes .ok

response.status_code == requests.ok

response.status_code != requests.codes .ok

Refer to the exhibit. A developer creates a Python script that queries Cisco Webex. When the script is executed, a 401 code is returned. After troubleshooting, the developer discovers that the service is missing privileges. Which change to the header in line 4 of the script results in the code 200?

. header = {ג€Authorizationג€ : ג€Bearer YOUR_TOKENג€}

header = {ג€Authenticationג€: ג€Bearer YOUR_TOKENג€}

header = {ג€Authentication Bearerג€ : ג€YOUR_TOKENג€

header = {ג€Authorization Bearerג€ : ג€YOUR_TOKENג€}

Refer to the exhibit. Which command needs to be placed on the box where the code is missing to output the value of page_id in the Python 3.7 script?

print(items.get('items').get('page_id'))

print(items.get('items')[0].get('page_id'))

print(items['items']['page_id'].keys())

print(items['items']['page_id'])

Refer to the exhibit. A network engineer must manage the network devices. The engineer prepares a Python script to authenticate to the Cisco DNA Center API and request a device list. The device request fails and returns error code 401. Which action solves the problem?

Send the Authentication header in the request with a valid configuration

Update the credentials that are already supplied and retry the request.

Send the request to another network in case there are reachability issues.

Update the API URL, which matched the API endpoint for device list

What is a difference between a synchronous API and an asynchronous API?

Synchronous API calls are returned immediately while asynchronous calls do not guarantee an immediate response.

Synchronous API calls require an authentication header to be sent while asynchronous calls do not require authentication.

An asynchronous API can make offline calls while synchronous APIs do not have this capability.

An asynchronous API can make a larger number of calls in a specified time period than a synchronous API.

Which API is used to obtain data about voicemail ports?

. Cisco Unified Communications Manager

Which two use cases are supported by Meraki APIs? (Choose two.)

Configure network devices via the Dashboard API.

Build location-aware apps from Wi-Fi and LoRaWAN devices.

Build a custom Captive Portal for Mobile Apps.

Deploy applications onto the devices.

Retrieve live streams from a Meraki Camera.

What caused the error in this API request?

The submitted JSON payload has a formatting issue.

The API resource does not support the POST operation.

The API resource does not support JSON format payloads.

The submitted JSON payload includes a field that is not supported by the API resource.

Which two statements describe the traits of an asynchronous API call? (Choose two.)

A callback function typically is used to process the response from an API call.

A call to an API does not block the code, but rather it allows application processing to continue.

Code execution blocks or waits for the call to an API to return.

The end user can experience latency or performance lag while waiting for the API call to return.

The order in which API calls return can be guaranteed.

A developer is troubleshooting an API with the given API documentation and cURL command. What is the cause of this problem?

The authorization header is missing or incomplete.

The request body is missing or incomplete.

The API token specified is expired.

. The user is not allowed to post messages from their account.

What are two benefits of managing network configuration via APIs? (Choose two.)

reduction in network changes performed manually

increased scalability and consistency of network changes

more security due to locking out manual device configuration

configuration on devices becomes less complex

eliminates the need of legacy management protocols like SNMP

An administrator attempts to perform a GET using the Cisco IOS XE RESTCONF API to return the hostname of a device. The sequence diagram illustrates theHTTP messages observed. Which change to the API request resolves the issue?

Add ג€"'u cisco:cisco' in the end of the cURL command

Remove the ג€"H 'Accept: application/yang-data+json' HTTP header because it is not required.

Change the request method from ג€"X ג€GETג€ to ג€"X ג€POSTג€

Add Content-Type HTTP header with 'application/yang-data+json' using ג€"H 'Content-Type: application/yang-data+json'

Which method should be used to safely store the API keys?

in an environment variable unique to the system database

encrypted in a configuration file that is separate from the code

plain text in the code as a constant

encrypted in the code in a function

How does requesting a synchronous API operation differ from requesting an asynchronous API operation?

clients can access the results immediately

clients receive responses with a task ID for further processing

clients subscribe to a webhook for operation results

. clients poll for the status of the execution of operations

What are two use cases where webhooks are effective? (Choose two.)

Close a session with a web server after a specific amount of time.

Send an email to a customer of an online store after payment is complete

Filter out information from a response to an API call.

Inform a previously defined chat channel after a deployment fails

Change the response format or content type of an API call.

Refer to the exhibit. Which data is specified in the response header?

ג€typeג€: ג€switchג€

{ ג€idג€: ג€a123456bcdeג€, HTTP/1.1 200 OK ג€statusג€: ג€onlineג€, ג€typeג€: ג€switchג€ } Hide Solution Discussion 5

An API call is constructed to retrieve the inventory in XML format by using the API. The response to the call is 401 Unauthorized. Which two headers must be added to the API call? (Choose two.)

Authorization: Bearer dXNlcm5hbWU6cGFzc3dvcmQ=

Bearer-Token: dXNlcm5hbWU6cGFzc3dvcmQ=

Authentication: Bearer dXNlcm5hbWU6cGFzc3dvcmQ=

Which action resolves a 401 error in response to an HTTP GET that is issued to retrieve a configuration statement using RESTCONF on a CSR 1000V?

Check the authentication credentials

Check the MIME types in the HTTP headers

Change the transport protocol to HTTPS

A developer is trying to retrieve data over a REST API. The API server responds with an HTTP client error response code. After investigating the response, the developer realizes the response has a Retry-After header. What is the root cause of this error?

Too many requests were sent to the REST service in a given amount of time

An appliance limited the rate of requests to the transport layer.

The REST service is unreachable at the time of the REST request.

An appliance limited the rate of requests to the application layer.

A 401 HTTP response code is returned when calling a REST API. What is the error state identified by this response code?

The request has not been accepted because it requires authentication.

The server cannot process the request as it has detected an issue in the request syntax or body.

The sever accepted the request but the client is not authorized for this content.

The server cannot find the requested resource because the path specified is incorrect.

A REST API returns this JSON output for a GET HTTP request, which has been assigned to a variable called `vegetables`. Using Python, which output is the result of this command? print(filter(lambda 1: 1['type'] == 'fruit', vegetables) [0]['items'][0]['items'][0])

{'color': 'green', 'items': ['kiwi', 'grape']}

What is a comparison of YAML and JSON?

JSON does not support comments and YAML does.

YAML has a more consistent approach to representing data compared to JSON.

YAML is a more verbose data structure compared to JSON.

JSON has more common usage in configuration management tools compared to YAML.

Several teams at a company are developing a new CRM solution to track customer interactions with a goal of improving customer satisfaction and driving higher revenue. The proposed solution contains these components:* MySQL database that stores data about customers* HTML5 and JavaScript UI that runs on Apache* REST API written in PythonWhat are two advantages of applying the MVC design pattern to the development of the solution? (Choose two.)

to provide separation between the view and the model by ensuring that all logic is separated out into the controller

to ensure that only one instance of the data model can be created

to enable multiple views of the same data to be presented to different groups of users

to ensure data consistency, which requires that changes to the view are also made to the model

to provide only a single view of the data to ensure consistency

What is a benefit of version control?

keeps track of all changes to the files

prevents two users from working on the same file

keeps the list of data types used in the files

A developer is working on a feature for a new application. The changes in the existing branch named 'feat00304' must be integrated into a single commit with the current working primary branch named 'prodapp411926287'. Which git command must be used?

git checkout --squash feat00304

What is the difference between YAML and JSON data structure?

YAML uses spaces; JSON uses parentheses

YAML uses indentation; JSON uses brackets and braces

YAML uses brackets and braces; JSON uses indentation

YAML uses parentheses; JSON uses spaces

What is a benefit of using functions in the code for the development process?

better user experience in the end product

What is a functionality of the Waterfall method as compared to the Agile method for software development?

A phase begins after the previous phase has ended in Waterfall while Agile phases run in parallel.

Waterfall increases agility to implement faster while Agile promotes reliability.

Customers get feedback during the process in Waterfall while they can see the result at the end in Agile.

Requirements can be updated in Waterfall while in Agile it should be gathered in the beginning.

Package updates from a local server fail to download. However, the same updates work when a much slower external repository is used. Why are local updates failing?

The update utility is trying to use a proxy to access the internal resource.

The server is running out of disk space.

The Internet connection is too slow.

The Internet is down at the moment, which causes the local server to not be able to respond.

Devnet-100

Authored by мадияр алимов

Mathematics

1st Grade

Used 3+ times

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100 questions

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MULTIPLE SELECT QUESTION

10 sec • 1 pt

1 Which two concepts describe test-driven development? (Choose two.)

User acceptance testers develop the test requirements.

It enables code refactoring.

Tests are created when code is ready for release

Implementation is driven by incremental testing of release candidates

Write a test before writing code

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

A developer is attempting to retrieve all the messages from a Cisco Webex space. The server responds by sending the first 1,000 messages. The developer must make additional requests to retrieve the rest of the messages. Which API constraint is described in this scenario?

payload limiting

throttling

pagination

rate limiting

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Refer to the exhibit. A collaboration engineer has developed a script to automate the gathering of information by providing the email address of the individual.When the engineer tests the script, a 401 error is received. Which command fixes the script?

Add ג€Authorizationג€: ג€Bearer <WEBEX_TOKEN>ג€ to the headers.

Add ג€Authenticationג€: ג€Basic <WEBEX_TOKEN>ג€ in the base_url after ג€https://ג€.

Add ג€<Authorization>:<password>@ג€ in the base_url after ג€https://ג€.

Add ג€Authenticationג€: ג€Bearer <WEBEX_TOKEN>ג€ to the headers.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

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Devnet-100

1 Which two concepts describe test-driven development? (Choose two.)

A developer is attempting to retrieve all the messages from a Cisco Webex space. The server responds by sending the first 1,000 messages. The developer must make additional requests to retrieve the rest of the messages. Which API constraint is described in this scenario?

Refer to the exhibit. A collaboration engineer has developed a script to automate the gathering of information by providing the email address of the individual.When the engineer tests the script, a 401 error is received. Which command fixes the script?

Which HTTP code group is issued when a request is received successfully, understood, and processed?

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