DEVNET FINALS 2.0 (INCOMPLETE)
DEVNET FINALS 2.0 Quiz
Challenge your knowledge with the DEVNET FINALS 2.0 quiz, designed for aspiring network professionals and developers. This quiz covers a variety of topics related to cloud computing, network security, automation, and programming.
Test your skills in:
- Cloud computing solutions
- Networking fundamentals
- Automation tools and methods
- Software development practices
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 isolale 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
Uses the Github API and human moderators to categorize and display releated repositories
Code
Ecosystem
Automation exchange
A collection of network automation use cases with different solutions and toolkits
Code
Ecosystem
Automation exchange
Provides solutions across different technologies, industries, and geographies to jump start solution design and development
Code
Ecosystem
Automation exchange
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?
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 process that prioritizes responding to change over following a plan
A software development method that tracks closely with the software development life cycle
A process that was developed for manufacturing, but adapted to other industries
A more traditional sollware developical process as they have used this process ini past projects
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
Clone
Which stakeholder determines the useful value of software product features in the Lean process?
The customer
The Scrum master
The reviewer
The programmer
Software is installed into the production environment
Requirement & analysis
Implementation
Deployment
Code is developed according to low level and high level design documents
Requirement & analysis
Implementation
Deployment
The product owner and qualified team member gather the requirements for the software to be built
Requirement & analysis
Implementation
Deployment
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
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
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.
It forwards data through a network infrastructure device.
It includes protocols used to remotely configure network devices.
It manipulates data and outputs it in the JSON format.
It includes network traffic being processed by EIGRP or OSPF.
It manipulates traffic using Python.
It includes applications and protocols used between network devices such as routers.
It includes the SNMP protocol.
It forwards data through a network device such as a router or a switch.
It forwards data through a network device.
It includes routing protocols.
It manipulates data and outputs it in the XML format.
It includes protocols used to monitor network devices.
47. 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.
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.
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
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 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:
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
A software development process where the highest priority is to satisfy the customer through early and continuous delivery of valuable software
A software development process that can only go forward
A process that amplifies learning as well as delivers as quickly as possible
A more traditional software development process as they have used this process in past projects
A process that was developed for manufacturing, but adapted to other industries
A software development process where a particular phase depends on the results of the previous phase
A software development method that tracks closely with the software development life cycle
A software development method that tracks closely with the software development life cycle
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
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. 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.
It operates in a stateless way.
It uses HTTPS to transport data.
It must operate along with a DNS server.
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.
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
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.
It forwards data based on STP settings.
It includes applications and protocols used between network devices such as routers.
It includes protocols used to monitor network devices.
It is responsible for the switching of packets in hardware.
It manipulates data and outputs it in the JSON format.
It includes the SNMP protocol.
It processes data in hardware.
It processes network traffic that is paramount to maintaining the functionality of the network infrastructure.
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
Threat Grid
Threat Grid
Advanced Malware Protection
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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