Which layer focuses on securing data as it moves across networks?

Which layer focuses on securing data as it moves across networks?

• A. Physical Security
• B. Perimeter Security
• C. Network and Data Transit Security
• D. Data Security

Answer: (C)

Protecting information while it travels across networks is the focus here. This avenue of security centers on securing the path data takes, using encryption, integrity checks, and authentication of endpoints along transport channels. Secure transmission protocols like TLS for web traffic or IPsec for VPNs, along with strong key management, keep data confidential and unaltered as it moves between systems. In other words, it covers data in transit across networks. Physical security is about safeguarding the hardware and facilities, not the data as it flows. Perimeter security concentrates on defending network boundaries from unauthorized access, but it doesn't guarantee protection for data once it’s inside the network or as it travels between nodes. Data security typically refers to protecting the data itself, often at rest or during processing, rather than focusing specifically on transport across networks. Because the item is about safeguarding data during transmission across networks, the best fit is the layer that handles network and data transit security. An example would be implementing TLS or IPsec to protect traffic between endpoints.

Protecting information while it travels across networks is the focus here. This avenue of security centers on securing the path data takes, using encryption, integrity checks, and authentication of endpoints along transport channels. Secure transmission protocols like TLS for web traffic or IPsec for VPNs, along with strong key management, keep data confidential and unaltered as it moves between systems. In other words, it covers data in transit across networks.

Physical security is about safeguarding the hardware and facilities, not the data as it flows. Perimeter security concentrates on defending network boundaries from unauthorized access, but it doesn't guarantee protection for data once it’s inside the network or as it travels between nodes. Data security typically refers to protecting the data itself, often at rest or during processing, rather than focusing specifically on transport across networks.

Because the item is about safeguarding data during transmission across networks, the best fit is the layer that handles network and data transit security. An example would be implementing TLS or IPsec to protect traffic between endpoints.