Archive for April 2020

GATEWAY REDUNDANCY - [Part 1] - INTRODUCTION

Basically we use a single gateway to reach the Internet. But what will happen, if this gateway will go down or something will wrong in tha...

Question - 1 What is the TCP/IP model ? Basically TCP/IP model came to overcome the drawbacks of general OSI model. TCP/IP determine h...

Application Layer = Transport Layer + Presentation Layer + Session Layer [OSI Model] Application Layer is combination of Transport, Prese...

The Proxy ARP occurs, if one node will respond to an ARP request on behalf of another node. When a host or node is communicating with ano...

The Gratuitous ARP is sent as a broadcast message to a node to announce or update its IP to MAC mapping to the entire network. Check t...

Internet Layer = Network Layer [OSI Model] Internet Layer is similar to Network Layer of OSI Model: Internet Layer Internet layer i...

Transport Layer = Transport Layer [OSI Model] Transport Layer has same function as Transport Layer of OSI Model, it is also known as Ho...

Protocol Type - Distance Vector Protocol Cisco Proprietary - Yes IGP/EGP - IGP (Interior Gateway Protocol) Administrativ...

Question - 1 Explain BGP MED attribute. Always lowest MED will be preferable. It is Optional non-transitive attribute. MED is ex...

Question - 1 Explain BGP Origin Code attribute. There are three origin code. i - IGP , e - EGP, ? - INCOMPLETE i - IGP - You c...

Question - 1 Explain BGP AS-PATH attribute. AS_Path is the number of ASNs in the AS Path. It is Well-known mandatory attribute. Al...