Three D Integrated Solutions Ltd NOC Engineer Interview Questions and Answers

Hot Standby Routing Protocol (HSRP) is a Cisco proprietary protocol that provides redundancy for IP networks.

• HSRP allows multiple routers to work together in a group, with one router acting as the active router and others as standby routers.

• The active router handles the traffic while the standby routers are ready to take over in case of failure.

• HSRP uses a virtual IP address and a virtual MAC address to provide seamles...read more

EtherChannel is a technology that allows multiple physical links to be combined into a single logical link.

• EtherChannel provides increased bandwidth and redundancy.

• It is commonly used in network switches to aggregate multiple links between switches.

• By bundling multiple links, EtherChannel enhances performance and load balancing.

• It also provides link redundancy, ensuring network availability in case of link failures.

• Eth...read more

EIGRP and OSPF are routing protocols used in computer networks.

• EIGRP (Enhanced Interior Gateway Routing Protocol) messages include Hello, Update, Query, Reply, and Acknowledgment.

• OSPF (Open Shortest Path First) messages include Hello, Database Description, Link State Request, Link State Update, and Link State Acknowledgment.