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Interview Questions

Interview Question – Data Link Layer of OSI model

This section has questions related to the DATA Link Layer of OSI Model What is the data on this layer called?Describe the two sub-layers of...

Interview Question – Network Layer of OSI model

This section describes the Interview questions related to Network Layer of OSI model. What are the protocols used on this layer.Difference between Routed protocol and...

Interview Question – TRANSPORT LAYER of OSI model

This post is about the possible questions on TRANSPORT LAYER of OSI model. What is difference between TCP and UDP.TCP ports ranges - Reserved, Available...

Interview Question – OSI model

Here are the TOP interview questions which will always asked in every interview ever :-1. OSI MODEL What are the different Layers of OSI model.How...

Interview Topics for BGP

Used cases scenarios for BGP.Single, Dual homing in BGP.BGP attributesBGP path selection Criteria.BGP Mandatory, discretionary , transit attributes.BGP path manipulation techniques.Router filtering in BGP...

Interview topics – OSPF

OSPF packet types.OSPF area types, router types , network types.Neighbor adjacency state machine.OSPF as link state routing protocol, neighbor discovery.How to read OSPF tables(...

Interview Questions – OSPF DR/BDR

How is DR elected in an network and how can others know who is DR, which specific address are used?On which network DR/BDR is...

Interview Questions: OSPF area types, router types , network types.

Why area 0 is called backbone area?How does summarization work in OSPF in case have A1-A0-A2?Can we connect a router which is not...

Interview Questions – BGP path selection, route filtering, attributes, messages, troubleshooting.

If we have two routers connected to same ISP, which path will be selected as primary and on which parameter if all the attributes...