What is the difference between stateful and stateless firewalls?
Firewalls are network security devices designed to monitor and control
Interview Questions
Explain the purpose of ACLs (Access Control Lists).
Access Control Lists (ACLs) are a set of rules or
What is a default route and when is it used?
A default route, also known as the default gateway or
Differentiate between HDLC and PPP encapsulation.
HDLC (High-Level Data Link Control) and PPP (Point-to-Point Protocol) are
Describe the purpose of GRE (Generic Routing Encapsulation).
Generic Routing Encapsulation (GRE) is a tunneling protocol developed to
What is PPP (Point-to-Point Protocol)?
Point-to-Point Protocol (PPP) is a data link layer (Layer 2)
Explain the concept of Frame Relay.
Frame Relay is a packet-switching telecommunications technology that was widely
Define a VPN (Virtual Private Network).
A Virtual Private Network (VPN) is a technology that establishes
What is MPLS (Multiprotocol Label Switching)?
Multiprotocol Label Switching (MPLS) is a protocol-agnostic networking technology used
Differentiate between a circuit-switched and packet-switched network.
Circuit-switched and packet-switched networks are two fundamental communication paradigms that