15 11 2018
[November-2018]Braindump2go 73Q 300-550 VCE Free Download[Q34-Q44]
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QUESTION 34
Which two tools help you to program against Nexus APIs? (Choose two.)
A. Jenkins
B. Cisco Nexus 1000v
C. VIRL
D. DevNet sandboxes
E. Cisco Open SDN Controller
Answer: CD
Explanation:
https://developer.cisco.com/site/nx-os/
QUESTION 35
Which statement about shading in ACI is true?
A. Sharding is the technology that is designed to prevent “split-brain” scenarios in ACI
B. Sharding is the service that presents the API on a Cisco APIC
C. Sharding is the mechanism for distributing the database and configuration changes on a Cisco APIC cluster.
D. Sharding is the distributed topology that is used in ACI (also referred to as spine-leaf).
Answer: C
Explanation:
https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/unified-fabric/white-paper-c11-730021.html
Sharding Technology
In the case of a split-brain condition, automatic reconciliation is performed based on timestamps.
Each Cisco APIC has all Cisco APIC functions; however, processing is evenly distributed throughout the Cisco APIC cluster.
QUESTION 36
How are authentication credentials sent in a Cisco APIC REST API authorization request?
A. by using OAuth
B. in a token in the header
C. by using Basic Auth
D. in JSON in the payload
Answer: B
Explanation:
http://aci-troubleshooting-book.readthedocs.io/en/latest/rest.html#authentication
QUESTION 37
Which two statements about OpenFlow are true? (Choose two.)
A. The Open Flow table contains header fields, counters, and actions.
B. OpenFlow automatically determines network forwarding rules.
C. OpenFlow interfaces with the management plane.
D. OpenFlow is a southbound protocol.
E. OpenFlow is an agentless technology, like Ansible.
F. OpenFlow is a northbound protocol.
Answer: AD
Explanation:
For A, http://archive.openflow.org/documents/openflow-spec-v1.0.0.pdf
For D, https://learninglabs.cisco.com/lab/restconf-101/step/3
QUESTION 38
Where is the node-ui.log stored on the Cisco APIC-EM appliance?
A. in the /var/log/grapevine/services/node-ui directory within the container that is running the node-ui instance
B. in the Cassandra database instance that is running within the container that is running the node-ui instance
C. in the /opt/CSCOapicem/logs/node-ui directory within the Cisco APIC-EM appliance root
D. in the /var/log/grapevine/services/node-ui directory within the Cisco APIC-EM appliance root
E. in the Cisco APIC-EM Cassandra database instance
QUESTION 39
Drag and drop the technology on the left to its appropriate use case on the right.
Answer:
Explanation:
Netconf – used to send RPCs to retreive operational data via SSH
Restconf – uses HTTP verbs for getting and setting configuration data
Openflow – used to program the data plane of network devices
Opflex – standards-based protocol that is used to distribute policies to programmable network eledments
PCEP – used to distribute the traffic engineering database
BGP-LS – uses TLVS to pass messsages between client and server
QUESTION 40
Which network configuration protocol uses JSON as a data representation format?
A. NETCONE
B. SOAP
C. RESTCONF
D. HTML
Answer: C
Explanation:
https://tools.ietf.org/html/draft-ietf-netconf-restconf-13#section-1.1.1 5.3.2
https://tools.ietf.org/html/draft-box-http-soap-00 XML payload format in SOAP
QUESTION 41
Which two statements about the NX-API are true? (Choose two.)
A. NX-API supports XML-RPC
B. NX-API is enabled by default
C. NX-API supports JSON-RPC.
D. The nxapi_auth cookie expires in 30 minutes.
E. NX-API maps to NX-05 NETCONF.
Answer: AC
Explanation:
https://www1.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/programmability/guide/b_Cisco_Nexus_9000_Series_NX-OS_Programmability_Guide/b_Cisco_Nexus_9000_Series_NX-OS_Programmability_Guide_chapter_011.pdf
NX-API is an enhancement to the Cisco Nexus 9000 Series CLI system, which supports XML output. NX-API also supports JSON output format for specific commands.
QUESTION 42
Which two statements about YANG are true? (Choose two.)
A. YANC3 was conceptualized by Jerry Yang, former CEO of Yahoo.
B. YANG provides security beyond SSL 3.0.
C. YANG can be executed similarly to a Python script.
D. YANG is used by NETCONF to define objects and data in requests and replies.
E. YANG represents configuration, operational, and RPC data.
Answer: DE
Explanation:
https://www.slideshare.net/cmoberg/a-30minute-introduction-to-netconf-and-yang
QUESTION 43
Which computer security concept is violated when a web server is written that uses the “root” account for all Interactions with a Linux system?
A. RBAC
B. Permit Root login
C. certificate-based authentication
D. principle of least privilege
QUESTION 44
An organization leverages a multivendor network to sell connectivity services using Layer 3 VPN and VPLS. Where possible, the organization wants to use common APis across vendors, in order to automate the configuration of network services. Which technology should the organization consider for the southbound interface?
A. BGP-LS
B. OpFlex
C. OpenFlow
D. NETCONF
E. PCEP
Answer: D
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