What is ARP? / Telnet /SSH port no What is stp and define stp Flavour ? What is vtp ? Whats is vlan / DHCP / DNS ? Whats the work of BGP ? Define OSPF State .. OSI Model Root Bridge Election Process ? Difference between switch and Multilayer Switch vs Router ? Etherchannel ? Subnetting / Wildcard Mask ?

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A series of technical questions related to networking and protocols.

ARP is a protocol used to map an IP address to a physical address
Telnet uses port 23 and SSH uses port 22 for remote access to network devices
STP (Spanning Tree Protocol) prevents loops in a network by blocking redundant paths
VTP (VLAN Trunking Protocol) allows for the propagation of VLAN information across a network
VLANs (Virtual Local Area Networks) allow for logical segmentation of a network
DHCP (Dynamic Host Configuration Protocol) assigns IP addresses to devices on a network
DNS (Domain Name System) translates domain names to IP addresses
BGP (Border Gateway Protocol) is used to exchange routing information between different autonomous systems
OSPF (Open Shortest Path First) is a link-state routing protocol used in IP networks
The OSI (Open Systems Interconnection) model is a conceptual model for network communication
The root bridge election process is used in STP to determine which switch will be the root bridge
A switch operates at layer 2 of the OSI model, while a router operates at layer 3
A multilayer switch can operate at both layer 2 and layer 3
Etherchannel is a technology used to bundle multiple physical links into a single logical link
Subnetting is the process of dividing a network into smaller subnetworks
A wildcard mask is used in conjunction with subnetting to specify which bits in an IP address represent the network and which represent the host

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