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DevNet
| Question | Answer |
|---|---|
| Which function is used to get input from a user in Python? | input() |
| Python is a language. | High-level |
| Which Linux course is free and self-paced for beginners? | Linux Unhatched |
| Which Cisco course is recommended for Linux beginners? | Linux Unhatched |
| Which two labs help you prepare for DEVASC? | Python Lab & Linux Lab |
| Which of the following is required to run a virtual machine? | A modern computer and OS |
| What Python statement is used for decision-making? | if |
| Webex Teams installation is part of which lab? | Virtual Lab Environment |
| Which Linux command modifies file permissions? | chmod |
| In Python, which function displays output? | print() |
| Which Python keyword ends a loop early? | break |
| Which Linux command displays file contents? | cat |
| Which keyword is used to define a function in Python? | def |
| Linux command to change file permissions: | chmod |
| The Python for loop is best used for: | Iterating over a sequence |
| Which Python function opens a file? | open() |
| Which of the following is NOT a Python feature mentioned? | Proprietary licensing |
| What does the command pwd display? | Current working directory |
| Which lab includes system administration tasks? | Linux Review Lab |
| Which lab task involves preparing your computer for virtualization? | Install the Virtual Lab Environment |
| Which module helps determine readiness for the DEVASC course? | Course Introduction |
| Which of these is a common use of Linux? | IoT devices and servers |
| Which module objective is emphasized in Module 1? | Use Python and Linux skills |
| The DEVASC course prepares learners for: | Network automation and programmability |
| Which of these is a Linux command to list files? | ls |
| DevNet Learning Labs include tutorials on: | Networking, IoT, Python, REST APIs |
| DevNet Knowledge Base consists of: | Troubleshooting articles for reference |
| What is the main benefit of DevNet Sandboxes? | Test APIs and platforms in safe environments |
| DevNet forums are primarily for: | Developer community collaboration and support |
| DevNet developer program integrates which of the following? | Website, tools, sandboxes, forums, documentation |
| Which DevNet Exchange has over 1,500 solutions? | Ecosystem Exchange |
| DevNet Learning Labs allow you to: | Set up development environments and practice coding |
| Which of the following is part of DevNet Developer Support? | Knowledge Base |
| Which of the following is included in the DevNet Home page? | Start Now, Learning Tracks, Video Courses, Sandboxes, Code Exchange |
| DevNet community interaction is mainly supported through: | Forums, chat, and community spaces |
| The Ecosystem Exchange provides: | Over 1,500 solutions across technologies and industries |
| What is the purpose of DevNet Sandboxes? | Provide hands-on exploration of software and APIs |
| Which of the following is NOT a feature of DevNet? | Hardware simulation software |
| DevNet Exchange that uses GitHub API is: | Code Exchange |
| A developer can troubleshoot API issues in DevNet by: | Using DevNet Developer Support |
| Which DevNet Exchange is most likely to help in designing solutions with partners? | Ecosystem Exchange |
| DevNet Developer Support provides help for: | API integrations, connections, and developer use cases |
| DevNet Sandboxes are best described as: | Production-like environments for testing and development |
| Which is a lab objective in Module 2? | Find and navigate a Learning Lab |
| Which is an example of getting DevNet support? | Logging a support ticket online |
| Which DevNet resource is most helpful for finding third-party Cisco-related solutions? | Ecosystem Exchange |
| Which DevNet Exchange lists solutions across industries and geographies? | Ecosystem Exchange |
| A developer can access DevNet forums by visiting: | devnetsupport.cisco.com |
| What is the DevNet Ecosystem Exchange best for? | Finding diverse Cisco-related solutions |
| Which DevNet Exchange provides automation use cases and toolkits? | Automation Exchange* |
| Which keyword defines a function in Python? | def |
| Which testing validates the full system functionality? | System Testing |
| In MVC, which part handles business logic? | Model |
| JSON arrays are represented with: | [] |
| In MVC, which part interacts with the user? | View |
| Which Git command switches branches? | git checkout |
| Which design pattern notifies objects when state changes? | Observer |
| Which format is lightweight and commonly used in APIs? | JSON |
| Which design pattern creates objects without specifying the class? | Factory |
| Which Python structure is immutable? | Tuple |
| Which principle encourages short, focused functions? | Single Responsibility Principle |
| In MVC, which part processes input and updates the model? | Controller |
| Which Git command initializes a repository? | git init |
| Which testing ensures old features still work after changes? | Regression Testing |
| Which Git command uploads commits to a remote? | git push |
| Which Git command combines branch changes? | git merge |
| Which SDLC phase ensures the system aligns with business needs? | Requirements Analysis |
| Which format is indentation-sensitive? | YAML |
| Which Git command shows current file states? | git status |
| Which statement exits a loop early? | break |
| YAML lists are represented with: | Dash (- ) |
| Continuous Integration (CI) focuses on: | Frequently merging code changes |
| Which Python structure stores key-value pairs? | Dictionary |
| Which SDLC model delivers software in sequential steps? | Waterfall |
| Which SDLC phase involves fixing bugs and improving software post-release? | Maintenance |
| Which requirement is necessary to consume a webhook? | Application must be running to receive HTTP POST |
| Which HTTP status code means ‘Created’? | 201 |
| Which of the following is NOT one of the six REST principles? | Multi-threading |
| Which authentication method uses unique alphanumeric keys assigned to users? | API Key |
| REST was authored by: | Roy Thomas Fielding |
| Which HTTP status code means ‘No Content’? | 204 |
| An API Rate Limit is primarily used to: | Prevent overload and DoS attacks |
| Which API design style allows execution to continue while waiting for a response? | Asynchronous |
| Which HTTP method is used to remove a resource? | DELETE |
| Which rate limit algorithm checks requests within a moving time frame? | Sliding Window Counter |
| Which part of a URI provides filtering or additional request details? | Query |
| Which HTTP status code means ‘Bad Request’? | 400 |
| Authentication proves: | Identity of the user |
| Which error category represents server-side mistakes? | 5xx |
| Which part of a URI represents the host and port? | Authority |
| What does API stand for? | Application Programming Interface |
| Which HTTP status code means ‘Not Found’? | 404 |
| Which category of HTTP status codes indicates server error? | 5xx |
| SOAP uses which format for messaging? | XML |
| Authorization defines: | Permissions of the user |
| Which HTTP method is typically used to create a new resource? | POST |
| Which rate limit algorithm uses a queue and processes at a fixed rate? | Leaky Bucket |
| Which of the following is NOT a benefit of using APIs? | Manual Data Entry |
| Which status code means ‘Service Unavailable’? | 503 |
| Which HTTP status code means ‘OK’? | 200* |
| A system administrator issues the apt-get upgrade command on a Linux operating system. What is the purpose of this command? | Every application installed will update itself to the latest version. |
| A Linux system administrator is searching the passwd file for any username that starts with a digit. Which grep command should the administrator use? | grep ‘^[0-9]’ /etc/passwd |
| What is the output when the following code is entered into a Python program interpreter? | [1,2,4,5,3,6] |
| What is displayed after the following code is entered into a Python interpreter? | 32 |
| A Linux administrator is attempting to use a terminal to configure the network interface card on a computer. The administrator receives a message that the administrator does not have necessary permissions to perform the configuration. What should be done | use the sudo command |
| A network engineer needs to review the status of all network interfaces of a server running a Linux operating system. The engineer enters the command ifconfig -a. What is the result of this command? | Both active and inactive interfaces will display information. |
| A system administrator attempts to determine what is causing a computer to perform slower than normal. The administrator issues the ps command. What is displayed by this command? | active processes using CPU time |
| A user issues the Linux command ls -l myfile.sh to check the permission of the file myfile.sh. devasc@labvm:~/Documents$ ls -l myfile.sh -rwxr-xr-- 1 self test 15 Mar 30 21:24 myfile.sh Which two statements describe the permissions assigned to the fil | The user with the user ID of self can modify the file. Any user in the test group can execute the file. |
| Which Python command creates a conditional control structure? | if |
| A user enters the commands as shown. What is the result after the mv command is entered? devasc@labvm:~/Documents$ pwd /home/devasc/Documents devasc@labvm:~/Documents$ mv myfile.sh ../Desktop/myfile2.sh | The file myfile.sh is moved to the /home/devasc/Desktop directory and renamed as myfile2.sh. |
| A student new to Python is working in the interactive interpreter mode. The student issues the commands: >>> ipAddress = {"R1":"10.1.1.1","R2":"10.2.2.1","R3":"10.3.3.1"} Which data type is used to represent the variable ipAddress? | dictionary |
| A student new to Python is working in the interactive interpreter mode. The student issues the command: >>> ipAddress = {"R1":"10.1.1.1","R2":"10.2.2.1","R3":"10.3.3.1"} Which Python expression can be used to retrieve the IP address of R2? | ipAddress[‘R2’] |
| A user issues a series of Linux commands as shown. (omitted)$ pwd /home/devasc/labs/ansible/backups (omitted)$ cd ../.. Which directory is the current directory after the cd command is entered? | /home/devasc/labs |
| A student new to Python is working in the interactive interpreter mode. The student issues the commands: >>> devicenames=["RT1", "RT2", "SW1", "SW2"] >>> hostnames=devicenames + ["RT3", "SW3"] >>> del hostnames[3] >>> hostnames What is the result? | [‘RT1’, ‘RT2’, ‘SW1’, ‘RT3’, ‘SW3’] |
| A student is learning Python in the interactive interpreter mode. The student issues the commands: >>> y=2 >>> y*3 6 >>> 'Test'*y What is the result? | ‘TestTest’ |
| A student is learning Python and is reviewing a Python script as follows: aclNum = int(input("What is the IPv4 ACL number? ")) if aclNum >= 1 and aclNum <= 99: print("This is a standard IPv4 ACL.") elif aclNum >=100 and aclNum <= 199: print | when the if statement is false |
| A user issues a Linux command and the result is shown: total 40 drwxr-xr-x 2 devasc devasc 4096 Mar 30 21:25 Desktop drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Documents drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Downloads drwxr-xr-x 5 devasc | ls -l |
| A network engineer needs to review the status of all network interfaces of a server running a Linux operating system. The engineer enters the command ifconfig -a . What is the result of this command? | Both active and inactive interfaces will display information. |
| What is network programmability? | the ability to configure, monitor, and react to events in the network in real time |
| What is the purpose of Cisco DevNet? | to teach everyone about the different Cisco API offerings and how to use them |
| What are two benefits of using APIs and integrations between applications? (Choose two.) | Integrations are used to provide applications the ability to notify each other when a specific event happens. Integrations enable the applications to request actions from each other. |
| What is the contracted response time after a developer opens a case-based ticket with the DevNet support service? | one business day |
| Which Cisco DevNet developer support option provides 1-on-1 support to the members of the Solution Partner program? | case-based ticket |
| Which technology trend enables an industry shift towards automation, applications, and integrations? | advanced API capabilities |
| What resources are available in the Cisco DevNet sandboxes? | production-like development and code testing environments |
| Which link is used from the Cisco DevNet Learning Labs to access the largest collections of labs? | Tracks |
| Which Cisco DevNet online resource provides use cases for network automation, including listing data and activating policies across domains? | Automation Exchange |
| What are two requirements when participating in the DevNet Learning Labs? (Choose two.) | The user must successfully log in with a DevNet account. The user must have an active internet connection. |
| What are three major areas that comprise DevNet? (Choose three.) | interactive and collaborative developer community integrated community forums coordinated developer tools |
| What resources are available in the Cisco DevNet Code Exchange? | a repository of sample code written by other developers |
| A developer issues the Linux command pip3 freeze in an activated Python 3 virtual environment. What is the function that is provided by the command? | to output a list of installed Python packages |
| What are two characteristics of the Git version control system? (Choose two.) | It is a distributed VCS. It is open source |
| Match the Lean term with a description. | |
| What characteristic describes a formal code review? | The entire code base is reviewed in a series of meetings. |
| Which fundamental Lean principle forms the basis from which all other Lean principles flow? | eliminate waste |
| When a unified diff file is being reviewed, which symbol is used to indicate that a line has been added? | + |
| What special characters are used to enclose JSON objects? | curly braces {} |
| What are two features of the formal code review? (Choose two.) | It promotes discussion among all of the reviewers. It involves a review of the entire code base in a series of meetings. |
| Which statement describes the Waterfall methodology of software development? | Each step in the process must be completed before the next step starts |
| What is clean code? | code that is easy to read and understand |
| Match the Git command with its function. | |
| What is the role of the view component in the Model-View-Controller (MVC) flow? | It accepts selected data and displays the visual representation to the user. |
| A developer is constructing some functions in Python. When is a function referred to as a module in Python? | when the function is packaged in a single Python file |
| A student is learning Python using the interactive interpreter mode. The student issues these commands: >>> class Uri(): ... def_init__(self, host, prot): ... self.host = host ... self.prot = prot ... self.url = self.prot + "://" + self.host >>> Wh | >>> url2 = Url(‘www.cisco.com’, ‘http’) |
| A developer issues a Linux command python3 -m venv devenv . What is the developer trying to achieve? | to create a Python 3 virtual environment named devenv |
| When a unified .diff file is being reviewed, which symbol is used to indicate that a line has been added? | + |
| Refer to the exhibit. A network administrator is using a Python script to test a REST API request. The traceback message indicates that there is an error in the URI. What is a possible issue? | The destination host address is wrong. |
| Match the RESTful API method to CRUD function. | |
| What is an architectural constraint to which a true RESTful API web service must adhere? | It operates in a stateless way. |
| Refer to the exhibit. A network administrator is using a Python script to send a REST API request. What is the purpose of the line of code resp = requests.get(url, verify = False) ? | It bypasses the certificate validation check. |
| A client is sending a REST API request to a web server. The request includes the need for data compression. Which three values are acceptable for the Accept-Encoding request header? (Choose three.) | * br gzip |
| What is the meaning of the term flow as it relates to the OAuth 2.0 authorization framework? | It is a process for an API user to obtain an access token from the authorization server. |
| What is a characteristic of a RESTful API? | It uses HTTP methods to gather and manipulate data. |
| Which characteristic of the SOAP architecture specifies communication between all similar and dissimilar application types? | independence |
| In the REST API request URI example , which term describes the component example.com ? | authority |
| Which SOAP message root element defines the XML document as a SOAP message? | Envelope |
| Which type of credential information is used for the bearer authentication in REST APIs? | a string generated by an authentication server |
| What are two purposes for using rate limits on public and unrestricted APIs? (Choose two.) | to avoid a server overloading from too many requests at the same time to provide better service and response time to all users |
| Which HTTP response status code indicates that the user is not authenticated to access the site? | 401 |
| Which API architectural style uses an XML-based messaging protocol to communicate between applications? | SOAP |
| A network engineer is learning about Rest APIs. When executing a particular API, the server responds with curl. How is this information useful? | Curl shows how to access the content displayed in the response body using curl. |
| In which situation would a synchronous API be used? | when data is being retrieved from a database |
| What Linux command is used to display the contents of the current directory? | ls |
| What command is used to rename a file in a Linux system? | mv |
| ls -lr | |
| A system administrator of a Linux server is searching the passwd file for the username taylor that appears at the beginning of the line. Which grep command should the administrator use? | grep ‘^taylor’ /etc/passwd |
| A user issues the apt-get upgrade command to update system files in a Ubuntu Linux system and receives an error message of “permission denied.” What should the user do to complete the task? | Issue the sudo apt-get upgrade command. |
| A student is learning Python using the interactive interpreter mode. The student issues the commands: >>> routers=[] >>> switches=[] >>> devices=[\"RT1\", \"RT2\", \"RT3\", SW1\", \"SW2\", \"SW3\"] >>> devices=devices + [\"RT4\", \"SW4\"] >>> for i i | [‘SW1’, ‘SW2’, ‘SW3’, ‘SW4’] |
| A student is learning Python in the interactive interpreter mode. The student issues the commands: >>> devicenames=[\"RT1\", \"RT2\", \"SW1\", \"SW2\"] >>> devicenames[-1] | SW2 |
| A developer needs to check the version of the running Python package. Which command should the developer use? | python3 -V |
| A student is learning Python in the interactive interpreter mode. The student issues the command: >>> type(True) What is the data type reported by Python? | Boolean |
| Which Python programming function is used to display output? | |
| What type of learner should take the DevNet Associate course? | anyone interested in network automation and programmability |
| What is contained within a DevNet Sandbox? | a preconfigured environment already installed with Cisco platforms |
| Which two DevNet resources are available online? (Choose two.) | Automation Exchange Code Exchange |
| Which DevNet resource would a developer use if the developer is using a Cisco API and needs help understanding the error message received? | DevNet Support |
| What is Cisco DevNet? | a developer program |
| What is required in order to ensure that clients are able to talk to applications that are outside a local system? | a network |
| What is the purpose of the Cisco DevNet Learning Labs? | They provide self-paced tutorials including coding. |
| What is a requirement when creating a Cisco DevNet account for accessing educational resources, such as Learning Labs and the DevNet Sandbox? | The account must be created using an existing online identity or via a new Cisco account. |
| Which DevNet event is provided by Cisco partners and Cisco offices? | DevNet Express |
| Which website provides the entry point for Cisco DevNet? | developer.cisco.com |
| Which software development methodology prescribes that developers follow a strict process order by completing one step in the SDLC process before proceeding to the next step. | Waterfall |
| Which SDLC development methodology employs many quick iterations known as sprints? | Agile |
| Which two programming components are defined as blocks of code that perform tasks when executed? (Choose two.) | functions methods |
| A developer wants to find the location of the Python 3 executable file. Which command should the developer use? | which python3 |
| Which SDLC phase concludes with functional code that satisfies customer requirements and is ready to be tested? | implementation |
| What are the three states of a Git file? (Choose three.) | staged committed modified |
| Which term is used to describe the first line of an XML document? | prologue |
| How does an application use a module in Python? | through the import statement |
| What is the role of the controller component in the Model-View-Controller (MVC) flow? | It takes user input and manipulates it to the proper format for the model. |
| Which code review method involves the developer going through the code line-by-line with the reviewer, allowing the developer to make changes on the spot? | over-the-shoulder |
| What is REST? | It is an architecture style for designing web service applications. |
| Which HTTP response status code indicates that the request to update the database is completed? | 201 |
| How many elements does a SOAP message contain? | 4 |
| Refer to the exhibit. A network administrator is using a Python script to test a REST API request. The traceback message indicates there is an error in the URI. What is the error? | The protocol is missing. |
| Which type of encoding is used in basic authentication for REST APIs? | Base64 |
| What is an architectural constraint to which a true RESTful API web service must adhere? | It runs as client/server model. |
| What is a reason that a network engineer would use APIs? | to automate configuration or data collection tasks |
| What is a webhook for REST APIs? | It is an HTTP callback to a URL to notify the client application that an event has occurred. |
| As part of creating an API request using Python, the following commands are entered. What is the purpose of this step? ipaddr = 10.1.50.1 interface = Ethernet1/1 hostname = R1 | to create variables |
| A web service uses a rate limit algorithm that puts all incoming REST API requests into a queue in the order in which they arrive. The algorithm allows incoming requests to arrive at any rate, but the server processes the requests from the queue at a fixe | leaky bucket |
| What is an application requirement in order to receive a notification from a webhook provider? | The application must always be running to receive HTTP POST requests. |
| Which RESTful operation corresponds to the HTTP GET method? | read |
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