QUESTION 141
Which two HTTP code series relate to errors? (Choose two.)

A. 100
B. 200
C. 300
D. 400
E. 500

Correct Answer: DE

QUESTION 142
What is the purpose of Infrastructure as Code?

A. to manually configure and manage infrastructure at scale
B. to apply new practices on the development process
C. to provide the ability of independent development process
D. to use development engineering practices on the infrastructure

Correct Answer: D

QUESTION 143
What is a feature of a MAC address?

A. It consists of 6 hexadecimal numbers.
B. It consists of 38 bits.
C. It consists of 12 hexadecimal numbers.
D. It consists of 24 bits.

Correct Answer: C

QUESTION 144
What is a benefit of version control?

A. reuse of code-on-code patches
B. application of code directly to hardware
C. compatibility with back-end systems
D. tracking development changes

Correct Answer: D

QUESTION 145
Which tool simulates a network that runs Cisco equipment?

A. VMware
B. Docker
C. CML
D. Cisco Prime Infrastructure

Correct Answer: C

QUESTION 146
Which RFC 1918 address space includes a subnet of 172.16.0.0 that uses a mask of 255.255.0.0?

A. class A
B. class B
C. class C
D. class D

Correct Answer: B

QUESTION 147
Which HTTP response code is returned from a successful REST API call to create a new resource?

A. 201
B. 204
C. 302
D. 429

Correct Answer: A

QUESTION 148
What is a requirement when authenticating a RESTCONF API session with a router that runs Cisco IOS XE Software?

A. OAuth must be used.
B. A token must be retrieved and the associated string must be embedded in the X-Auth-Token header.
C. Basic authentication must be used.
D. No authentication is required.

Correct Answer: C

QUESTION 149
Which Python data type resembles JSON data structures?

A. Tuple
B. List
C. Dictionary
D. String

Correct Answer: C

QUESTION 150
Which HTTP response code should be returned when the request is completed but there is no content to send for the request?

A. 100
B. 204
C. 302
D. 402

Correct Answer: B

QUESTION 151
A developer created a new secure API and is testing the functionality locally. The API was added to a container for further testing, and other team members and applications need to connect to the API. Which command exposes the API in the container as port 8443 and allows connections external to the host?

A. docker run -p 0.0.0.0:8443:443/tcp myapiservice
B. docker run -p 127.0.0.1:443:8443/tcp myapiservice
C. docker run -p 127.0.0.1:80:8443/tcp myapiservice
D. docker run -p 0.0.0.0:443:8443/tcp myapiservice

Correct Answer: A

QUESTION 152
Which DNS record type allows a reverse proxy to communicate to a backend component without specifying the port?

A. PTR
B. CNAME
C. AAAA
D. SRV

Correct Answer: D

QUESTION 153
What is an advantage of using branches for developers working with a version control system?

A. making changes to code in isolation of each other
B. implementing a CI/CD pipeline to automate the deployment of code
C. using different commit methods such as GUI/CLI
D. tagging commits to capture a snapshot of a specific point in time

Correct Answer: A

QUESTION 154
Which CI/CD component allows for the storing of code packages and enables the testing of the same code that is running on the live system?

A. Git
B. Artifactory
C. ITSM
D. Jira

Correct Answer: B

QUESTION 155
A developer has created a three-tier web application for network device control and management. The application consists of multiple objects assigned for different functionalities. The architecture of the application is based on the Observer pattern. Which advantage does this pattern provide for the application design and architecture?

A. It decouples the subjects from the observers.
B. Independent observers are updated automatically.
C. It updates the state of dependent subjects directly.
D. One observer can query the state of other subjects.

Correct Answer: B

QUESTION 156
What is a benefit of managing the network configuration by using organized code that consumes APis when deploying multiple network devices?

A. simplifies the device configuration
B. eliminates use of legacy management protocols
C. fewer manual network changes
D. increased device security

Correct Answer: C

QUESTION 157
A user needs to receive a notification when messages are sent on the Cisco Webex platform. Which webhooks feature must be used to limit the events that are received?

A. Subscribe to the specific endpoint webhook of the messages.
B. Apply a signature to the events of the messages and discard all others.
C. Filter the events to be received on the webhooks POST.
D. Apply a filter for a notification to be received for events of resource types.

Correct Answer: C

QUESTION 158
A company needs to deploy several servers that run different operating systems. The servers will host new tools. The company cannot purchase dedicated servers for each tool, so the company sets up a hypervisor on a large server to run multiple virtual machines. What are two features of a virtual machine? (Choose two.)

A. It provides application-level abstraction.
B. It provides physical hardware-level abstraction.
C. It prevents the operating system from crashing.
D. It provides enhanced security.
E. It supports a snapshot and backup of the operating system.

Correct Answer: BE

QUESTION 159
What is a characteristic of an Agile development method as compared to a traditional Waterfall approach?

A. The Agile development method is phased and linear, and the Waterfall method uses a cyclic approach.
B. Agile development method requires upfront analysis and design, and the Waterfall method accepts design changes on each cycle.
C. Agile development welcomes changes, and in the Waterfall method milestones are strictly defined.
D. In Agile customer involvement is limited to the requirements collection phase, and the Waterfall method interacts with customers throughout the process.

Correct Answer: C

QUESTION 160
A developer must address a user experience issue and is working on a fork. The developer needs to push a new branch named ‘UEXP’ to the remote repository named ‘appPRO’. Any new changes that were pushed to the remote repository from other contributors must be updated on the local branch. Which Git command must be used?

A. git fetch -f
B. git pull –all
C. git merge –all
D. git reset -f

Correct Answer: B