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- CCNA Routing and Switching 200-125
121.
On which network plane would a routing protocol perform?
- A.Data plane
- B.Control plane
- C.Management plane
- D.Routing plane
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Routing protocols such as OSPF and EIGRP would perform their function on the control plane, since they are controlling the routing of the data plane. |
122.
Which platform is Cisco’s software-defined network controller offering for
enterprise connectivity?
- A.APIC-EM
- B.OpenSDN
- C.OpenStack
- D.OpenDaylight
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The Application Policy Infrastructure Controller (APIC) is Cisco’s SDN controller. This package is freely downloadable from the Cisco DevNet website as of the writing of this book. It comes with several built-in apps, such as a plug and play module and a path trace module. Many other apps can be built on top of the APIC to extend functionality of the controller. |
123.
Which protocol is normally used with REST APIs?
- A.SNMP
- B.HTTP
- C.SNTP
- D.SOAP
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Representational State Transfer (REST) APIs normally utilize HTTP for moving data. It performs this via a get URI and it receives a response in XML, JSON, or another date transfer language. Although you can encrypt the HTTP traffic with SSL (HTTPS), its core language is still HTTP. |
124.
When an application communicates with a software-defined network (SDN)
controller, which mechanism does it use to communicate?
- A.The southbound interface (SBI)
- B.The core of the controller
- C.IPv6 addresses in different subnets
- D.The northbound interface (NBI)
- E.Simple Network Management Protocol (SNMP)
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The northbound interface (NBI) is responsible for allowing communication between applications and the core of the controller. Applications therefore directly communicate with the core through the northbound interface. |
125.
When a network packet is routed in a router, which network plane is facilitating
the traffic?
- A.Data plane
- B.Control plane
- C.Management plane
- D.Switch plane
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The data plane is responsible for switching and routing data. Any data that isdestined for endpoints is switched or routed on the data plane. For example, when one computer pings another, the ping is switched and routed on the data plane. |
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