Senior Network Specialist Interview Questions and Answers

SSL VPN and STS VPN are two types of VPNs. Phase 1 involves authentication and key exchange, while phase 2 establishes the actual VPN connection.

• SSL VPN uses SSL/TLS protocol for encryption, while STS VPN uses IPSec protocol.

• Phase 1 of both VPNs involves authentication and key exchange.

• In SSL VPN, phase 1 uses SSL/TLS handshake to authenticate and establish a secure channel.

• In STS VPN, phase 1 uses IKE (Internet Key Exchange) protocol to authenticate and establish a secure ch...read more

To link load balance on Palo Alto, configure a virtual router and create a load balancing profile.

• Configure a virtual router with multiple interfaces

• Create a load balancing profile with the desired algorithm (round-robin, least connections, etc.)

• Apply the load balancing profile to the virtual router's interfaces

• Configure the servers' default gateway to be the virtual router's IP address

BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems on the internet.

• BGP is used to make routing decisions based on network policies, rules, and attributes.

• BGP attributes include AS_PATH, NEXT_HOP, LOCAL_PREF, MED, and WEIGHT.

• AS_PATH is a list of autonomous systems that the route has traversed.

• NEXT_HOP is the IP address of the next router to reach the destination.

• LOCAL_PREF is used to influence outbound ...read more

STP (Spanning Tree Protocol) prevents network loops by blocking redundant paths and selecting the shortest path.

• STP is a protocol used to prevent network loops in a switched network.

• It works by blocking redundant paths and selecting the shortest path.

• STP uses a timer called Hello Time to send messages between switches to detect changes in the network topology.

• If a switch detects a change, it sends a BPDU (Bridge Protocol Data Unit) to all other switches to update the network ...read more