DDoS mitigation services often employ scrubbing centers, which are specialized data centers equipped to absorb and filter large volumes of malicious traffic. They analyze incoming traffic, remove the attack traffic, and forward only legitimate requests to the target server.

MPLS is a data-carrying mechanism that speeds up network traffic flow and makes it easier to manage. It assigns short path labels to network packets, avoiding complex routing table lookups and enabling faster and more efficient forwarding, especially in large enterprise networks and ISPs.

A VPN (Virtual Private Network) establishes a secure, encrypted connection over a less secure network, such as the internet. This allows users to securely access private network resources as if they were directly connected to the private network.

VPN stands for Virtual Private Network. This technology creates a secure tunnel for data transmission over a public network, such as the internet. By encrypting the user's internet traffic and routing it through a server operated by the VPN provider, a VPN can effectively hide a user's IP address, protect data from eavesdropping, and bypass geographical restrictions on content. It's 'Virtual' because it's not a physical direct connection, and 'Private' because it secures and privatizes your connection over a public infrastructure.

Net neutrality is the principle that Internet service providers (ISPs) should treat all data on the Internet equally, not discriminating or charging differently by user, content, website, platform, application, type of attached equipment, or method of communication.

A Permanent Virtual Circuit (PVC) is a pre-configured logical connection between two data communication devices. Unlike Switched Virtual Circuits (SVCs), which establish and tear down a connection for each session, a PVC remains perpetually established. Therefore, maintaining this continuous logical connection (Option A) is fundamental to its nature. Once established, its primary purpose is to facilitate the transfer of data packets (Option B) between the two endpoints without the overhead of connection setup or release for every transmission. Option C is incorrect because PVCs are 'permanent,' meaning they do not involve setup and teardown phases for individual data transmission sessions; those phases are handled at the time the PVC itself is provisioned by the network provider, not for each data transfer. Thus, both maintaining the connection and transferring data are key aspects of a PVC's operation.

A man-in-the-middle (MITM) attack involves an attacker secretly relaying and possibly altering the communication between two parties who believe they are communicating directly with each other. This allows the attacker to eavesdrop or manipulate the data exchange.

RTP (Real-time Transport Protocol) is designed to handle the transmission of real-time data, like audio and video streams, over IP networks. It provides features such as sequence numbering and timestamping to assist with reordering and synchronization.