Which protocol operates at the network layer and provides for full point-to-point encryption of all communications and transmissions?
Which protocol operates at the network layer and provides for full point-to-point encryption of all communications and transmissions?
IPSec is a protocol that operates at the network layer (Layer 3) and provides comprehensive encryption for all communications and transmissions between two points. It ensures both data integrity and confidentiality, making it suitable for secure communication over IP networks. SSL and TLS operate at higher layers (Layer 4-7) and are not designed for network layer encryption. VPN, on the other hand, refers to a secure network setup and is not a protocol by itself.
The answer reasoning specifically states why VPN is NOT the right answer: "Although a VPN allows a secure channel for communications into a private network from an outside location, it's not a protocol." The question is asking which "protocol" would be used, not technology. Therefore the only right answer is IPsec
A: IPSec
VPN (Virtual Private Network) is not the correct answer to the previous question because it is not a protocol.
The correct answer is "A". VPN itself is not a protocol, it uses various protocols to create secure and private connections between your device and a remote server.
B. VPN
Yeah this is not totally write. VPN would have been closer. In transport mode, IPsec never encrypts the IP header data (information such as the source and destination address), but in tunnel mode the IP header and payload are encrypted
No, not all VPNs work at layer 3.
VPN is a technology; it's not a protocol.
VPN is the technology. IPSEC is a VPN protocol. There are different VPN technology. MPLS, L2VPN, etc
You should read the meaning of VPN and IPsec, then you can answer. VPN is a technology, where you can use IPSEC L4 or SSL L7 to encrypt the traffic.
VPN is a technology; it's not a protocol.
IPSec and TLS are protocols. IPSec is network layer as the question asks. TLS is layer 4-7 so higher.
IPSec (Internet Protocol Security) operates at the Network Layer (Layer 3) of the OSI model and provides end-to-end encryption for all communications between networked devices. It is commonly used for VPNs, secure remote access, and site-to-site encryption. Why Not the Others? B. VPN: VPN (Virtual Private Network) is a broader concept that can use different protocols (including IPSec, SSL, or TLS) for secure tunneling, but it is not a protocol itself. C. SSL: Secure Sockets Layer (SSL) operates at Layer 4-7 and is mostly obsolete, replaced by TLS for encrypting web traffic. D. TLS: Transport Layer Security (TLS) works at Layer 4 (Transport Layer) and encrypts application-layer communications like HTTPS but does not encrypt all network traffic like IPSec does.