GadgEon Network Engineer Interview Questions and Answers for Experienced

TCP is connection-oriented, reliable protocol while UDP is connectionless, unreliable protocol.

• TCP stands for Transmission Control Protocol

• UDP stands for User Datagram Protocol

• TCP is connection-oriented, ensures delivery of data in order

• UDP is connectionless, does not guarantee delivery of data

• TCP is slower but more reliable, used for applications like web browsing, email

• UDP is faster but less reliable, used for applic

Firewall policies are rules set in place to control the flow of network traffic in and out of a network.

• Firewall policies determine what traffic is allowed or blocked based on defined criteria

• Policies can be based on IP addresses, ports, protocols, and applications

• They can be set to allow specific traffic, block certain traffic, or log traffic for analysis

• Regularly reviewing and updating firewall policies is important

L3 switches are network devices that operate at the network layer (Layer 3) of the OSI model, providing routing functions.

• L3 switches combine the features of traditional Layer 2 switches with routing capabilities of Layer 3 routers.

• They can make forwarding decisions based on IP addresses, allowing for more efficient traffic routing.

• Examples of L3 switches include Cisco Catalyst 3750 series and Juniper EX Series switche