Cisco CCNA 200-901 CCNAAUTO Practice Exam

• A. YAML Correct answer
• B. XML
• C. JSON
• D. HTML

Option A is correct because YAML uses whitespace indentation to express nesting. JSON relies on braces and brackets, while XML and HTML use opening and closing tags.

• A. {'name': 'R1', 'up': true}
• B. {name: "R1", up: true}
• C. {"name": "R1", "up": true} Correct answer
• D. {"name": "R1", "up": true,}

Option C is correct because JSON requires double-quoted keys and strings, and this document has valid syntax. Option A uses single quotes, B leaves the key unquoted, and D has a trailing comma, all of which JSON forbids.

• A. Every element must have a closing tag
• B. It supports arrays as a native structure Correct answer
• C. It allows // comments in the document
• D. Object keys must be strings enclosed in double quotes Correct answer

Options B and D are correct because JSON has arrays as a native structure and requires object keys to be double-quoted strings. Closing tags belong to XML, and the JSON specification does not allow // comments.

• A. data["devices"]["sw3"]["vlan"]
• B. data["vlan"][2]
• C. data["devices"][2]["vlan"] Correct answer
• D. data["devices"][3]["vlan"]

Option C is correct because the exhibit shows devices as a list of dictionaries, and sw3 is the third entry, which is index 2 because Python lists are zero-indexed. Option D uses index 3, which would raise an IndexError, and A and B treat the list as a dict keyed by device name or refer to a nonexistent top-level vlan key.

• A. POST
• B. PUT
• C. GET Correct answer
• D. DELETE

Option C is correct because GET is the safe, read-only method for retrieving a resource. POST, PUT and DELETE all change server state (create, replace, remove).

• A. GET
• B. HEAD
• C. DELETE
• D. POST Correct answer

Option D is correct because POST submits a new resource to a collection endpoint, and the server assigns its identifier. GET and HEAD only read data, and DELETE removes a resource.

• A. POST Correct answer
• B. HEAD
• C. DELETE Correct answer
• D. GET

Options A and C are correct because POST creates or submits data and DELETE removes a resource, both changing server state. HEAD and GET are read-only methods that only retrieve headers or representations.

• A. Request a new access token immediately
• B. Change the request method from GET to POST
• C. Wait at least 30 seconds, then retry the request Correct answer
• D. Retry immediately with a smaller request body

Option C is correct because the exhibit shows an HTTP 429 (Too Many Requests) response with Retry-After: 30 and X-RateLimit-Remaining: 0, so the client has used its quota and must wait at least 30 seconds before retrying. A new token, a different method or a smaller body would not clear a rate limit, and retrying immediately would just be rejected again.

• A. merakisdk
• B. meraki Correct answer
• C. dashboardapi
• D. ciscomeraki

Option B is correct because the official Meraki Dashboard API Python library is published on PyPI as `meraki` (installed with `pip install meraki`). The other names are not the official SDK package.

• A. ucsmsdk
• B. ncclient
• C. pyats
• D. dnacentersdk Correct answer

Option D is correct because `dnacentersdk` is the Python SDK for the Cisco Catalyst Center (formerly DNA Center) REST APIs. Option A (ucsmsdk) targets UCS Manager, B (ncclient) is a generic NETCONF client, and C (pyATS) is a test framework.

• A. Credentials are no longer needed
• B. REST endpoints are exposed as Python methods and objects Correct answer
• C. The code runs directly on the network device
• D. Authentication and pagination are handled by SDK methods Correct answer

Options B and D are correct because an SDK exposes REST endpoints as Python methods and objects and handles authentication and pagination for you. Credentials are still required, and SDK code runs on your workstation or server rather than on the network device.

• A. Storing all data in a single public cloud region
• B. Running applications only on end-user laptops
• C. Processing data close to where it is generated instead of in a distant central data center Correct answer
• D. Encrypting data at rest only

Option C is correct because edge computing moves processing close to the source of the data, such as sensors or branch sites. Storing everything in one cloud region is the opposite of edge, and encrypting data at rest is unrelated to where computation happens.

• A. Lower latency and less bandwidth consumed toward the cloud Correct answer
• B. Unlimited storage capacity
• C. Elimination of the need for local devices
• D. Automatic patching of all applications

Option A is correct because processing data locally cuts round-trip latency and reduces the volume sent over the WAN to the cloud. Edge does not give unlimited storage, remove local devices, or patch applications automatically.

• A. No need for security controls
• B. Less data sent to the central cloud Correct answer
• C. Lower latency for local processing Correct answer
• D. Unlimited compute capacity

Options B and C are correct because processing data at the edge sends less data to the central cloud and gives lower latency for local processing. Edge computing does not remove the need for security controls, and edge nodes have limited rather than unlimited capacity.

• A. OpenAPI Specification (OAS), used for REST API documentation
• B. MIB (Management Information Base), used with SNMP over UDP
• C. YANG Correct answer
• D. XML Schema Definition (XSD), used for web service contracts

Option C is correct because YANG (Yet Another Next Generation) is the data modeling language specifically designed to describe the structure, syntax, and constraints of configuration and operational data for NETCONF and RESTCONF. OpenAPI Specification is used for documenting REST APIs and is not a network device data model; MIB is used with SNMP and cannot represent the hierarchical configuration structures that YANG handles.

• A. gNMI, which uses gRPC as its transport with Protocol Buffer encoding
• B. RESTCONF Correct answer
• C. SNMP v3, which uses MIB trees over UDP with community-string authentication
• D. NETCONF, which uses SSH as its transport and encodes data in XML only

Option B is correct because RESTCONF is the protocol that runs over HTTP/HTTPS and supports both JSON and XML encoding of YANG-modeled data. NETCONF uses SSH as its transport and supports only XML encoding, while gNMI uses gRPC with Protocol Buffer encoding rather than HTTP.

• A. Compresses all CSV files from /var/data/reports and saves a single archive to a date-stamped directory
• B. Copies all CSV files from /var/data/reports into a date-stamped backup directory Correct answer
• C. Moves all CSV files from /var/data/reports into a date-stamped backup directory, removing the originals
• D. Searches /var/data/reports for CSV files and replaces any existing backup copies in the destination with updated versions

Option B is correct because the script uses find with -exec cp to copy each matched CSV file to the destination directory; the originals in /var/data/reports are not removed. mkdir -p creates the date-stamped directory if it does not yet exist, and the final echo line reports the count of files copied. A move operation would require mv instead of cp.

• A. 32
• B. 48 Correct answer
• C. 64
• D. 128

Option B is correct because a MAC address is 48 bits (six bytes), usually written as 12 hexadecimal digits. 32 bits is the size of an IPv4 address, and 128 bits is an IPv6 address.

• A. A VLAN increases the link speed
• B. A VLAN forms a separate broadcast domain Correct answer
• C. A VLAN encrypts traffic between hosts
• D. Trunk links identify VLANs using 802.1Q tags Correct answer

Options B and D are correct because a VLAN creates a separate broadcast domain, and trunk links identify the VLAN of each frame with 802.1Q tags. VLANs do not increase link speed or encrypt traffic.

• A. PC4 only Correct answer
• B. PC2 and PC4
• C. PC3 and PC4
• D. PC2, PC3, and PC4

Option A is correct because a broadcast stays within its VLAN. PC1 is in VLAN 10, and the only other VLAN 10 host is PC4 on SW2, reached across the Gi0/1 trunk, which allows VLANs 10 and 30. PC2 and PC3 are in VLAN 20, so they do not receive the frame.