MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -VPN: VPN stands for virtual private network. It is a means of connecting separate LANs through the internet, while maintaining privacy. This is used to connect remote systems as if they were on a local network, often for security reasons.

Detailed explanation-2: -IPsec is a group of protocols that are used together to set up encrypted connections between devices. It helps keep data sent over public networks secure. IPsec is often used to set up VPNs, and it works by encrypting IP packets, along with authenticating the source where the packets come from.

Detailed explanation-3: -VPNs use public-key encryption to protect the transfer of AES keys. The server uses the public key of the VPN client to encrypt the key and then sends it to the client. The client program on your computer than decrypts that message using its own private key.

Detailed explanation-4: -A Virtual Private Network (VPN) adds security and anonymity to users when they connect to web-based services and sites. A VPN hides the user’s actual public IP address and “tunnels” traffic between the user’s device and the remote server.

Detailed explanation-5: -A virtual private network (VPN) allows your company to securely extend its private intranet over the existing framework of a public network, such as the Internet. With VPN, your company can control network traffic while providing important security features such as authentication and data privacy.