Innova Solutions Senior Network Engineer Interview Questions and Answers

BGP attributes are used to determine the best path for routing. Path selection process involves comparing attributes like AS path, local preference, etc.

• BGP attributes include AS path, local preference, MED, origin, etc.

• Path selection process involves comparing attributes in a predetermined order to determine the best path.

• AS path attribute is used to prevent routing loops and determine the shortest path to a destinati...read more

Yes, I have worked on configuring and managing firewalls in various network environments.

• Configured firewall rules to control traffic flow

• Managed firewall policies to ensure network security

• Troubleshooted firewall issues and implemented solutions

• Worked with different firewall vendors such as Cisco, Palo Alto, and Fortinet

Check OSPF configuration, network connectivity, router IDs, subnet mismatches, authentication, and hello/dead timers.

• Verify OSPF configuration on both routers

• Check network connectivity between routers

• Ensure router IDs are unique

• Check for subnet mismatches

• Verify authentication settings

• Check hello and dead timers

SIA (Stuck In Active) is a mechanism in EIGRP to prevent routing loops by marking a route as 'stuck' if a feasible successor is not found.

• SIA occurs when a router is unable to find a feasible successor for a route during a topology change.

• During SIA, the router marks the route as 'stuck' and queries its neighbors for a new path.

• This prevents routing loops by temporarily blocking the affected route until a new feasible

DNS stands for Domain Name System, which translates domain names to IP addresses.

• DNS is like a phone book for the internet, translating human-readable domain names (like google.com) to IP addresses (like 172.217.3.206).

• It helps users access websites by typing in easy-to-remember domain names instead of complex IP addresses.

• DNS servers store records of domain names and their corresponding IP addresses, allowing for effi...read more

DHCP stands for Dynamic Host Configuration Protocol, used to automatically assign IP addresses to devices on a network.

• DHCP eliminates the need for manual IP address configuration on each device

• It assigns IP addresses dynamically, allowing for efficient use of available addresses

• DHCP servers lease IP addresses to devices for a specific period of time

• DHCP also provides other network configuration information, such as su...read more

Link state and DV are routing protocols, STP is for loop prevention, BGP is for inter-domain routing.

• Link state protocols (e.g. OSPF) use Dijkstra's algorithm to calculate shortest path.

• Distance vector protocols (e.g. RIP) use Bellman-Ford algorithm and exchange routing tables.

• STP (Spanning Tree Protocol) prevents loops in Ethernet networks by blocking redundant paths.

• BGP (Border Gateway Protocol) is used for inter-dom...read more