10+ ABB Motors Interview Questions and Answers

OSPF, RIP, IGRP, and EIGRP are routing protocols used in networking to determine the best path for data packets to travel.

• OSPF (Open Shortest Path First) is a link-state routing protocol that uses Dijkstra's algorithm to calculate the shortest path.

• RIP (Routing Information Protocol) is a distance-vector routing protocol that uses hop count as a metric to determine the best path.

• IGRP (Interior Gateway Routing Protocol) is a distance-vector routing protocol developed by Cisco.

• E...read more

BGP stands for Border Gateway Protocol, used for routing between different autonomous systems on the internet.

• BGP is a standardized exterior gateway protocol used to exchange routing information between different autonomous systems (AS).

• It helps in determining the best path for data packets to travel between networks.

• BGP is crucial for ensuring efficient and reliable internet connectivity.

• It allows network administrators to control the flow of traffic and optimize network per...read more

Routing protocols determine how data packets are forwarded across a network, while routed protocols define the format of the packets.

• Routing protocols are used by routers to determine the best path for forwarding data packets.

• Examples of routing protocols include RIP, OSPF, and BGP.

• Routed protocols are used to format the data packets themselves, such as IP or IPv6.

• Examples of routed protocols include TCP/IP, UDP, and ICMP.

Subnet mask is a 32-bit number used to divide an IP address into network and host portions.

• Subnet mask is used to determine which part of an IP address is the network portion and which part is the host portion.

• There are different types of subnet masks such as Classful subnet masks, Classless subnet masks, and Variable Length Subnet Masks (VLSM).

• Examples of subnet masks include 255.255.255.0 (Class C), 255.255.0.0 (Class B), and 255.0.0.0 (Class A).

The ISO model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

• The ISO model stands for International Organization for Standardization model.

• It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has specific functions and communicates with the adjacent layers for data transmission.

• For example, the Physical layer deals with the physical connec...read more

Switching is the process of forwarding data packets between devices on the same network, while routing is the process of forwarding data packets between different networks.

• Switching operates at Layer 2 of the OSI model, using MAC addresses to forward packets within a network.

• Routing operates at Layer 3 of the OSI model, using IP addresses to forward packets between networks.

• Switches create broadcast domains, while routers create collision domains.

• Examples of switches include ...read more

Proxy is an intermediary server that separates end users from the websites they browse. DHCP is a network protocol that assigns IP addresses to devices.

• Proxy server acts as a middleman between a user and the internet, providing anonymity and security.

• DHCP dynamically assigns IP addresses to devices on a network, simplifying network administration.

• Proxy servers can be used to bypass content restrictions or improve network performance.

• DHCP servers can also provide additional ne...read more

VLAN types include default, data, voice, management, and native VLANs.

• Default VLAN: VLAN 1 is the default VLAN on Cisco switches.

• Data VLAN: Used for data traffic.

• Voice VLAN: Used for voice traffic.

• Management VLAN: Used for managing network devices.

• Native VLAN: Untagged VLAN used for trunking.

Router commands are used to configure and manage routers in a network.

• show ip interface brief - displays a summary of the router's interfaces and their IP addresses

• show running-config - displays the current configuration of the router

• interface [interface name] - enters interface configuration mode for a specific interface

• ip route [destination network] [subnet mask] [next hop IP] - adds a static route to the routing table