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DevNet Exam

A pharmaceutical company wants to contract the services of a cloud provider to store employee data and company-specific applications with strict access security. Which type of cloud would be the most appropriate for this scenario?

Community cloud

Public cloud

Hybrid cloud

Private cloud

What is a function provided by an implementation of a read-only automation solution?

The ability to reduce risk by implementing security policies across the network infrastructure via automated changes

The ability to use GET and SET requests to retrieve and send data across the network infrastructure

The ability to use an automated request to audit configurations and manually deploy changes in order to implement compliance

The ability to implement network infrastructure that receives a configuration from a specific centralized server

Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)

The TCP process running on the PC randomly selects the destination port when establishing a session with the server.

UDP segments are encapsulated within IP packets for transport across the network

The TCP source port number identifies the sending host on the network

The UDP destination port number identifies the application or service on the server which will handle the data.

The source port field identifies the running application or service that will handle data returning to the PC

TCP is the preferred protocol when a function requires lower network overhead

What type of attack targets an SQL database using the input field of a user?

Buffer overflow

SQL injection

Cross site scripting

XML injection

Which command can be used on Linux and MAC hosts to get IP addressing information?

Ipconfig

Ip address

Ifconfig

Networksetup -getinfo

What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)

To create fewer collision domains

To create more broadcast domains

To enhance user bandwidth

To isolate ARP request messages from the rest of the network

To eliminate virtual circuits

To isolate traffic between segments

Which tool might a developer use as part of a Continuous Integration pipeline in order to build and test source code?

SQL

REST

Docker

Jenkins

A packet is received by a server. The packet has a destination port number of 8008. What protocol or service is requested?

Telnet over SSH

RESTCONF

HTTP

NETCONF

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

Devices in VLAN 20 and the management VLAN see the frame.

All devices in all VLANs see the frame

Only devices that are connected to the local switch see the frame

Only devices in VLAN 20 see the frame.

Which piece of software is responsible for creating and managing virtual machines, including allocating system resources to each virtual machine as needed?

Supervisor

Hypervisor

Host operating system

Hosted operating system

How is an Ethernet MAC address constructed?

The first 3 bytes represent the network upon which the host resides, and the last 3 bytes uniquely identify the host.

The first 3 bytes represent the vendor OUI, and the last 3 bytes are assigned uniquely by the vendor

The first 3 bytes are uniquely assigned by LANA, and the last 3 bytes represent the serial number of the host

The first 3 byles represent the vendor OUI, and the last 3 byles are assigned randorily by the operating system.

Which Cisco SDK works with ACI?

Cobra

IMC

UCS

Instant Connect

What platforms are provided by DevNet for community members to share solutions, tool kits, and other resources with each other?

Communities

Forums

Sandboxes

Exchanges

Which two data formats can RESTCON use when requesting data or responding with data? (Choose two.)

JSON

XML

YAML

YANG

HTML

Which DevNet resource would a developer use to look for a Python library that supports APIs for a specific Cisco product?

DevNet Learning Labs

Devlet Support

Code Exchange

DevNet Sandbox

A component was created with the intent of combining the disciplines and skills of Dev and Ops. This component created a new job role and implemented a best-practices playbook for doing Ops with software methods. Which component matches this description?

Agile Infrastructure and Operations

The SRE approach

Automated infrastructure

Shared Version control

Match the DevNet exhange type with the decription.

Code

Automation exchange

Ecosystem

System

Refer to the exhibit. A user is working on Ansible on the local NMS to manage remote network devices. Which file is the user creating?

Service

Playbook

Variable

Hosts

Which DevNet resource would a developer use in order to test custom code in a production-like environment?

Devlet Support

DevNet Learning Labs

Code Exchange

DevNet Sandbox

In which situation would a company implement a reverse proxy as a security solution?

When the company has a database and needs to point to a DNS server that uses different IP addresses for development resources

When the company wants all responses to clients to look like they came from the same server instead of individual ones

When a hash is created based on the IP address of the request to a particular protected server

When responses frorri servers need to be sent over different paths to ensure quality response time to the client devices making the requests

A software development company specializes in being able to use whatever software development method their customer wants to use. One customer company wants to use the Agile method. What is a characteristic of this method? (Choose 2)

A software development process where the highest priority is to satisfy the customer through early and continuous delivery of valuable software

A process that eliminates anything that does not add value to the project including meetings and documentation

A software development process that has the results of one phase feed into the next phase

A more traditional software development process as they have used this process in past projects

A software development method that tracks closely with the software development life cycle

A network engineer is creating a Docker container using the docker build command. If the engineer does not specify a tag, which tag will be used by default?

Tag

Latest

(a blank space)

Default

Which component in the pyATS ecology handles bundling and running jobs?

AEtest

Clover

Genie

EasyPy

Which three avenues are available within DevNet for developers who need help with specific developer scenario questions concerning Cisco products? (Choose three.)

Logging a ticket

Posting to the DevNet zone

Posting to a news group

Posting to a community forum

Posting to a Webex Teams space

Posting on the Cisco Learning Network

A student who is interested in network programmability approaches an instructor for advice on learning more about the subject. The student is a kinesthetic learner who learns by doing. Which DevNet resource should the instructor consider telling the student about?

DevNet Create

DevNet Learning Labs

DevNet Express

DevNet Zone

What is the default shell commonly used on macOS and Linux?

Tcsh

Csh

Bourne

Bash

What is immutable infrastructure in DevOps?

Infrastructure that is deployed with all component versions locked except for the ability to perform manual configuration changes

Infrastructure that is only deployed and maintained in containers

Infrastructure that is entirely maintained and deployed in code and never subjected to manual changes

Virtualized infrastructure that is deployed as golden images

What is the most common cause of IT outages?

An engineer misconfiguring a device or network with manual changes

An experienced engineer using an open source product

An experienced engineer implementing a configuration using automation

A threat actor largeting the enterprise equipment

Which string of characters is used to identify the beginning of a new separate document when multiple documents are in a single YAML file?

Three slashes “///”

Three dots “…”

Three pound signs “###”

Three dashes “—“

What is the difference between functions and methods in the Python programming structure?

Functions can use global variables whereas methods can only use local variables.

Functions are called by a referencing object whereas methods are called by the names.

Functions can pass arguments whereas methods can pass only predefined keywords.

Functions are standalone code blocks whereas methods are code blocks associated with an object.

Which command is used to create a new Git repository?

Git init

Git add

Git commit

Git clone

Which stakeholder determines the useful value of software product features in the Lean process?

The customer

The Scrum master

The reviewer

The programmer

Match the SDLC phase with its description. (Not all options are used.)

Deployment

Implementation

Designing

Requirement & analysis

What is a principle of the Lean software development model?

Adding additional product features that the customer did not ask for so that the customer is getting more than expected

Assigning resources to multiple projects so that effort can be divided on more than one task at a time

Making decisions as late as possible in the process so that more facts and details are available

Ordering workers to do tasks they may not want to do to ensure they get done

What character is used to separate the key and value pairs in YAML?

Colon :

Semi colon ;

Underscore _

Forward slash /

Which git command is used to compare changes between files?

Git diff

Git merge

Git checkout

Git status

Refer to the exhibit. Match the missing components of the Python script for authenticating to the Cisco Network Services Orchestrator and obtaining a list of network devices using the username of “superadmin” and password of “soverysecure!”. (Not all options are used.)

Superadmin

Soverysecure!

List

Get

Username

Password

Device

What is an example of a use supported by Cisco UCS Director and UCS Manager?

Bare metal server provisioning and monitoring of virtual environments

Call center and call management over IP networks

Underlying central system workflow management and migration

Telemetry data collection and analysis

How can a Webex Teams administrator retrieve additional details about a user through an API call?

By using the value of the organization name in the API call

By using the value of a Webex Teams registered email address in the API call

By using the value of the person id key in the API call

By using the value of orgld in the API call

Which library is the most commonly used Python library for connecting NETCONF clients with a NETCONF server?

Posix

Pyclient

Ncclient

Pypi

Refer to the exhibit. Match the missing components of the Python script for authenticating to the Cisco DNA Center and obtaining an authentication token using the username of “adminuser” and password of “Sup3rC1$c0”. (Not all options are used.)

Dnacip

Auth

Password

Adminuser

Post

Refer to the exhibit. Match the missing components to the Python script for authenticating to the Cisco DNA Center and obtaining a token using the username of “secureuser” and password of “C1$c0”. (Not all options are used.)

C1$c0

Password

Token

Superuser

Refer to the exhibit. Match the missing components of the Python script for the following tasks. (Not all options are used.) delete all previous demo rooms create a new demo room enroll Allan and Jane as members post a message to the new room

Delete

Create

Groups

Text

Remove

Which two APIs allow for Cisco Meraki device provisioning and real-time notifications? (Choose two.)

Webhook API

Investigation API

Dashboard API

Enforcement API

Reporting API

A packet is received by a server. The packet has a destination port number of 443. What protocol or service is requested?

HTTP

NTP

DHCP

HTTPS

When thinking about the functional planes of a network, what is unique about the data plane?

It includes protocols used to remotely access network devices.

It includes the SSH protocol.

It manipulates data and outputs it in the XML format.

It is responsible for the switching of packets in hardware.

Which Docker component defines the steps needed to create an image that can be deployed in a variety of environments?

UnionFS

Dockerfile

Cross-site script

Namespaces

Which three statements describe characteristics of a virtual machine? (Choose three.)

It is created and deployed using the Docker format.

It includes a guest operating system.

It runs on top of a hypervisor

It shares the operating system of the host computer.

It is completely self-contained with its own emulated storage, memory, and network interfaces.

It requires Windows as the host operating system.

Match the use cases of a load balancer to the description. (Not all options are used.)

Blue-green

Canary

Round robin

Green-blue

What are two characteristics of the staging environment of the four-tier deployment environment structure? (Choose two.)

It is the point where code has been tested multiple times and is error free.

It is structured as close as possible to the actual production environment.

It is where the code undergoes final acceptance testing in a realistic environment.

It is where end users will interact with the code.

It often includes automated testing tools such as Jenkins, CircleCl, or Travis Cl.

Refer to the exhibit. A network engineer has created a Jenkins pipeline. Which menu option would the engineer use to run the pipeline?

Configure

Changes

Build Now

Workspace

A network engineer is configuring a Jenkins job and finishing with the following script in order to trigger the build:

It makes sure that any previous instances of a particular Docker container are stopped and removed.

It catches and removes any errors.

It runs the SUCCESS Docker container.

It places a log of any errors in the SUCCESS file.

Which technique is used to make the output of password hashing nondeterministic?

Password length and complexity

Multifactor authentication

Password salting

Password strength validation tools

What does self-service refer to in the context of enterprise IT?

Imaging frequently used server configurations for rapid deployment

Distributing and implementing broad access to public cloud infrastructure-as-a-service services

Mainstreamed processes that promote a lower IT headcount by implementing automation

Automated tools and methods that deliver preconfigured developer platforms on demand

Which statement describes the term orchestration in IT automation?

Orchestration is aimed at managing workload lifecycles and reacting dynamically to changing conditions in order to optimize processes.

Orchestration is the process of preparing a server through the installation of libraries or daemons.

Orchestration is the building, arranging, integration, and preparation of multi-component applications across multiple nodes.

Orchestration is the obtaining and provisioning of compute, storage, and network infrastructure.

What is an example of a read-only automation solution?

Streamlining the management of L3 firewall rules in Cisco Meraki networks

Gathering SD-WAN inventory data using Python and recording the values in a database

Simplifying the automation of network device authentication, configuration, and consistency

Gathering the current list of ACL entries on an IOS XE router and enforcing consistency

A student is setting up the CSR1000v VM in VirtualBox that is already installed on the local computer. The VM is imported to the VirtualBox and starts successfully. The student tries to verify communications to the CSR1000v VM by opening the Firefox web browser on the local computer and enters the URL https://192.168.56.101 . A security message “Warning: Potential Security Risk Ahead” appears. What is the security issue that results in this message?

The SSL/TLS certificate uses a public key size of less than 1024 bits.

The SSL/TLS certificate is self-signed by the router.

The CA for the SSL/TLS certificate cannot be reached.

The traffic to the VM is not encrypted.

How do APIs affect traditional IT tasks?

They are used to replace network infrastructure and implement network virtualization.

They are used to eliminate repetitive manual tasks and replace them with automation.

They are used to increase computer processing speed and lower power consumption.

They are used to increase hardware speed and lower power consumption.

Refer to the exhibit. PC1 needs to resolve the host name of the web server into an IP address by using DNS. What destination IP address and destination port number will PC1 assign to the DNS query packet?

192.168.20.2 port 80

192.168.20.3 port 53

192.168.20.3 port 80

192.168.10.1 port 53

Which two statements are true about NTP servers in an enterprise network? (Choose two.)

There can only be one NTP server on an enterprise network

All NTP servers synchronize directly to a stratum 1 time source.

NTP servers at stratum 1 are directly connected to an authoritative time source.

NTP servers ensure an accurate time stamp on logging and debugging information.

NTP servers control the mean time between failures (MTBF) for key network devices.

Match the steps with the actions that are involved when an internal host with IP address 192.168.10.10 attempts to send a packet to an external server at the IP address 209.165.200.254 across a router R1 that is running dynamic NAT. (Not all options are used.)

Step 5

Step 2

Step 4

Step 1

Step 3

Step 6

A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?

Traceroute

Ipconfig

Telnet

Netstat

Which two HTTP functions correspond to the UPDATE function in CRUD? (Choose two.)

POST

DELETE

PATCH

PUT

GET

Match the term to the RESTAPI request http://example.com/update/person?id=42&email=person%40example.com. (Not all options are used.)

Scheme

Path

Authority

Query

Method

Which HTTP status code category is used in the response to indicate that a REST API request contains an error on the client side?

1xx

2xx

3xx

4xx

5xx

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 the error?

The protocol is wrong.

The resource path is wrong.

The SSL certificate is invalid.

The destination web host address is invalid.

What are two requirements for an application to communicate with a webhook provider? (Choose two.)

The application must support JSON.

The application must always be running.

The application must register a URL with the webhook provider.

The host where the application is running must have an SSH client installed.

The host where the application is running must have an SSH server running.

A student is learning network automation by using a REST API. The student sends a request to a network device and receives a response with the status code of 202. What does this status code mean?

The request was understood but has been rejected by the server.

The request was successful and typically includes a payload.

The request has been accepted for processing, but the processing has not been completed.

Because of a server error, the request cannot be fulfilled.

What are two characteristics of stateless applications? (Choose two.)

They must run on container orchestrators like Kubernetes.

They can be freely scaled across available capacity without disrupting ongoing customer connections.

They can be scaled only by redeploying them and destroying the data that users or operators previously needed.

They maintain the user state within the local user machine so that automation can work non-destructively.

They can store a user state in an accessible database separate from application servers and other components.

What is a characteristic of the continuous integration component of the CI/CD philosophy for software development?

Code changes are continually merged with the main branch of the application, so change sets are small.

Code changes are tested and integrated with the main branch then tested again before they are deployed into production

Code is constantly deployed into production where users serve as the final testers.

Application development is performed in short sprints so that enough code is always in a deployable state.

A software development company specializes in being able to use whatever software development method their customer wants to use. One customer company wants to use the Waterfall method. What is a characteristic of this method?

A software development process that prioritizes responding to change over following a plan

A process that eliminates inefficient ways of working like expecting coders to multitask

A software development process that focuses on frequent delivery of working software as well as collaboration between developers and business employees

A software devilment process that can only go forward.

In which SDLC phase is the software product installed into the production environment to decide if it is ready for release?

Implementation

Deployment

Design

Testing

Which convention is used in Python to indicate that methods and variables in a class are private and not to be used outside of the class?

By using a single preceding underscore ( _ ) for a method or variable

By using the command class private classname() : to start the class definition

By using two preceding hyphens ( — ) for a method or variable

By declaring a private method or variable in the beginning of the class definition

A packet is received by a server. The packet has a destination port number of 80. What protocol or service is requested?

DHCP

Telnet over SSH

HTTP

RESTCONF

A network administrator is developing an application to control a Webex device through xAPI. Which three protocols can be used to access xAPI? (Choose three.)

Telnet

HTTP

XML

RS-232

FTP

JSON

Which type of request is used to send a message to a Webex Teams space using Python and the Messages API?

PUT

POST

GET

PATCH

A network administrator is assigned the 172.16.0.0/24 block of addresses to use in designing an IP addressing scheme. The administrator submits this design for approval: 172.16.0.0/26 172.16.0.64/27 172.16.0.96/26 172.16.0.128/27 What should be the response from the senior network engineer regarding this design?

This design is flawed because the 172.16.0.128/27 network number is invalid.

This design will work for the branch office.

This design is flawed because no design could have two networks that use a /26 mask and are not consecutive blocks of addresses.

This design is flawed because the 172.16.0.96/26 network is not a valid block of addresses.

This design is flawed because the 172.16.0.96/26 network overlaps with other addresses.

Which statement describes a stateful firewall?

It can filter packets based on information at Layers 3, 4, 5 and 7 of the OSI reference model.

It can determine if the connection is in the initiation, data transfer, or termination phase.

It can only filter packets based on limited Layer 3 and 4 information.

It can expand the number of IP addresses available and can hide network addressing design

A software development company specializes in being able to use whatever software development method their customer wants to use. One customer company wants to use the Lean method. What is a characteristic of this method?

A process that eliminates inefficient ways of working like expecting coders to multitask

A software development process that focuses on frequent delivery of working software as well as collaboration between developers and business employees

A software development process that has the results of one phase feed into the next phase

A software development process that can only go forward

Refer to the exhibit. Match the Python coding information in the authentication request to the Cisco DNA Center to the location in the script. (Not all options are used.)

1001001027331

Url

Auth=("person1","super2")

Import json

A student is learning REST API application. The student constructs an URI to query the MapQuest API for a route from New York, NY to Boston, MA. What is the valid URI format?

Https://www.mapquestapi.com/directions/v2/route?key= key &from=New+York+NY&to=Boston+MA

Https://www.mapquestapi.com/directions/v2/route?key: key &from:New+York%2C+NY&to:Boston%2C+MA

Https://www.mapquestapi.com/directions/v2/route?key== ke y&from==New+York%2C+NY&to==Boston%2C+MA

Https://www.mapquestapi.com/directions/v2/route?key= key &from=New+York%2C+NY&to=Boston%2C+MA

Refer to the exhibit. A student constructs a URI to query the MapQuest API for a route from New Orleans, LA to New York, NY. Match the components to the MapQuest URL. (Not all options are used.)

Directions/v2/route

Key=get_your_api_key

From=New+Orleans

To=New+York

Orig=New+Orleans

Refer to the exhibit. Match the Python code components to the function. (Not all options are used.)

Str(resp.status_code)

Verify = False

Api/v1/host

'X-Auth-Token:ticket

Sys.exit()

Content-type:application/json

Tablefmt='fst'

A packet is received by a server. The packet has a destination port number of 123. What protocol or service is requested?

DNS

SSH

NTP

RESTCONF

Which scenario exhibits the “social proof” principle of human influence?

A user receives a phone call from someone claiming to be from the IT department who needs to verify user credentials.

A user visits a web site offering a free gift if the user provides contact information.

A user opens an email advertising a free trial on a website that is only available for a few hours.

A user completes a survey requesting personal information after seeing co-workers completing the survey.

Which SQL injection defense method should be used only as a last resort?

Escaping all user-supplied input

Using a database firewall

Implementing whitelist input validation

Using parameterized queries

Which type of ISE node provides network access, posturing, guest access, client provisioning, and profiling services?

Monitoring

Administration

PxGrid

Policy service

Which communication protocol does Ansible use to connect to remote devices?

Telnet over VPN

HTTPS

Secure FTP

SSH

Refer to the exhibit. Router R2 is configured with static NAT. Place in order the steps that occur when the client accesses the web server through the router. (Not all options are used.)

Step 2

Step 6

Step 3

Step 4

Step 5

step 1

Refer to the exhibit. What is the function of the identified missing information in regards to the parameter and method contained in the request?

A Webex Teams space will be identified by using a specified title, and additional details will be retrieved.

It provides the name for a Webex teams space to be deleted.

A Webex Teams space will be identified and a message will be posted with the title specified

It provides the name for a new Webex teams space.

What is an architectural constraint to which a true RESTful API web service must adhere?

It must support XML-RPC and JSON-RPC.

It allows resource caching.

It should be behind a firewall.

It operates as a cloud service.

A packet is received by a server. The packet has a destination port number of 53. What protocol or service is requested?

DNS

NetBIOS (NetBT)

POP3

IMAP

Which statement accurately describes dynamic NAT?

It always maps a private IP address to a public IP address.

It provides an automated mapping of inside local to inside global IP addresses.

It provides a mapping of internal host names to IP addresses.

It dynamically provides IP addressing to internal hosts.

A packet is received by a server. The packet has a destination port number of 830. What protocol or service is requested?

NTP

DHCP

NETCONF

HTTPS

Which programming language is supported by the Webex xAPI to develop macros for on-device customization?

Java

Python

JavaScript

C++

Which Cisco management system is designed as the solution for Software-Defined Networking and runs on Nexus 9000 hardware?

Application Centric Infrastructure platform (ACI)

IOS XE

Nexus Operating System (NX-OS)

DNA Center

A developer issues a Linux command python3 -m venv devenv . What is the developer trying to achieve?

To install the devnet tool sets in the Python 3 virtual environment named venv

To create a Python 3 virtual environment named devenv

To activate the Python 3 virtual environment named devenv

To enter the Python 3 virtual environment named venv using the devnet tool sets

Refer to the exhibit. Match the missing components of the Python script for the APIC-EM REST API request for the user “secureuser”. (Not all options are used.)

Secureuser

Requests

Header

Url

Two network engineers are discussing the methods used to forward frames through a switch. What is an important concept related to the cut-through method of switching?

The fragment-free switching offers the lowest level of latency.

Fast-forward switching can be viewed as a compromise between store-and-forward switching and fragment-free switching.

Fragment-free switching is the typical cut-through method of switching.

Packets can be relayed with errors when fast-forward switching is used.

When thinking about the functional planes of a network, what is unique about the control plane?

It forwards data through a network device.

It manipulates data and outputs it in the XML format.

It includes the SNMP protocol.

It includes network traffic being processed by EIGRP or OSPF.

Refer to the exhibit. If PC1 is communicating with a web server on the Internet, which two TCP/IP layers are responsible for encapsulating the message that requests data from that particular server and assigning a source port number? (Choose two.)

Session

Network

Transport

Physical

Application

A network security administrator is evaluating products that automate threat containment through APIs when a threat is detected. Which Cisco product with the desired capability provides a rule-based engine for enabling policy-based network access to users and devices?

Identity Services Engine

Umbrella

Threat Grid

Advanced Malware Protection

Match the purpose with its DHCP message type. (Not all options are used.)

Refer to the exhibit. Match the missing components to the Meraki API script to complete the following tasks. (Not all options are used.) retrieve the organizations retrieve the networks and the corresponding id retrieve the devices and corresponding device id

When thinking about the functional planes of a network, what is unique about the management plane?

It forwards data based on STP settings.

It is responsible for the switching of packets in hardware.

It includes protocols used to monitor network devices.

It includes applications and protocols used between network devices such as routers.

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