Cisco 300-550 Online Practice Questions and Exam Preparation

Cisco 300-550 Online Questions & Answers

• Question 91:

  The YANG data modeling language uses which two node types? (Choose two.)

  A. leaf-list
  B. array
  C. leaf-array
  D. spine
  E. container
  A. leaf-list
  E. container

  ---

  Reference: https://www.cisco.com/c/en/us/td/docs/optical/ncs1000/60x/b_Datamodels_cg_ncs1000/b_Datamodels_cg_ncs1000_chapter_00.pdf

• Question 92:

  

  Refer to the exhibit. Which action effectively secures the controller?

  A. Enable HTTP to HTTPS redirect.
  B. Require complex passwords.
  C. Use NUT on the router before the controller.
  D. Blacklist the public WAN.
  E. Whitelist the Admins network and block all others.
  A. Enable HTTP to HTTPS redirect.

• Question 93:

  Which Linux command gives you an overview of all currently running processes on the system?

  A. print all
  B. ps aux
  C. iostat
  D. star all
  B. ps aux

  ---

  Reference: https://www.cyberciti.biz/faq/show-all-running-processes-in-linux/

• Question 94:

  DRAG DROP

  Drag and drop the network automation protocol on the left to the transport protocol that it supports on the right. Some options are used more than once.

  Select and Place:

  

  

• Question 95:

  Which two northbound protocols are supported by the Cisco NSO Controller? (Choose two.)

  A. REST
  B. SOAP
  C. OpenFlow
  D. NETCONF
  E. PCEP
  A. REST
  D. NETCONF

  ---

  Reference:

  https://developer.cisco.com/site/nso/help/faq/

  Referred to Cisco Learning Labs,

  https://learninglabs.cisco.com/lab/06-dmi-02-yang-data-modeling-overview/step/3

  

• Question 96:

  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
  D. in JSON in the payload

  ---

  Authentication to the REST API for username/password-based authentication uses a special subset of request URIs, including aaaLogin, aaaLogout and aaaRefresh as the Dn target of a POST operation. Their payloads contain a simple XML or JSON payload containing the MO representation of an aaaUser object with attributes name and pwd defining the username and password, for example: . The response to the POSTs will contain an authentication token as both a Set-Cookie header as well as an attribute to the aaaLogin object in the response named token, for which the XPath is /imdata/aaaLogin/@token if encoded as XML. Subsequent operations on the REST API can use this token value as a Cookie named "APIC-cookie" to have future requests authenticated.

  Reference: http://aci-troubleshooting-book.readthedocs.io/en/latest/rest.html