MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A firewall is a system that is designed to protect your private network from unauthorised access. The firewall does so by filtering the information that comes in from the internet. With the information the firewall has available, it blocks unauthorised access and allows authorised access.

Detailed explanation-2: -To start, a firewalled system analyzes network traffic based on rules. A firewall only welcomes those incoming connections that it has been configured to accept. It does this by allowing or blocking specific data packets-units of communication you send over digital networks-based on pre-established security rules.

Detailed explanation-3: -A firewall is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or in a combination of both. Firewalls prevent unauthorized internet users from accessing private networks connected to the internet, especially intranets.

Detailed explanation-4: -Your router has a firewall feature. A firewall is a security barrier between the Internet and your home network. When a firewall is enabled, all communication data between the Internet and your home network is scanned to protect your network security.

Detailed explanation-5: -A firewall acts as a gateway that passes data between the networks. A firewall acts as a barrier when the firewall blocks the free passage of data to and from the network. The firewall requires a user on the internal network to log in to the firewall system to access hosts on remote networks.