CISSP Question #1039: Real Exam Question with Answer & Explanation

Question

Which of the following determines how traffic should flow based on the status of the infrastructure layer?

Options

• ATraffic plane
• BApplication plane
• CData plane
• DControl plane

Explanation

The control plane is the part of a network that determines how traffic should flow based on the status of the infrastructure layer. The control plane is responsible for the configuration and management of the network devices, such as routers, switches, or firewalls, and the routing protocols, such as OSPF, BGP, or RIP, that control the path selection and forwarding of the network traffic. The control plane communicates with the data plane and the management plane to ensure the optimal and secure operation of the network. The data plane is the part of a network that carries the user or application data from the source to the destination. The data plane is responsible for the processing and forwarding of the network packets, such as IP, TCP, or UDP, that encapsulate the data. The data plane communicates with the control plane to receive the routing and forwarding instructions. The management plane is the part of a network that monitors and controls the network devices and their performance. The management plane is responsible for the administration and maintenance of the network devices, such as configuration, backup, update, or troubleshooting, and the network services, such as SNMP, SSH, or Telnet, that enable the remote access and management of the network devices. The management plane communicates with the control plane and the data plane to collect and analyze the network information and statistics. The traffic plane is not a part of a network, but rather a term that refers to the network traffic itself, or the data that flows through the network.

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