Prepare for Networking/ Network Security Interview-Refer these questions :)

Posted Leave a commentPosted in Barracuda, BGP, Checkpoint, Cisco ASA, EIGRP, Firewall, Fortinet, Juniper SRX, Network Technology, OSPF, PaloAlto, PFsense, Protocols, Switchs, Technology

Networking  Questions OSI Reference Model What are the different network stack models and list all the layers of each model? What are the functions of Trasport, Network and Datalink layers? What are the different protocols works at each of the layers? What is end to end communication and Hop to Hop communication? What is a […]

Comparison of Routing Protocols EIGRP OSPF BGP

Posted Leave a commentPosted in BGP, EIGRP, GNS3, Network Technology, OSPF, Protocols

Let’s see the comparison routing protocol (EIGRP, OSPF and BGP) Property EIGRP OSPF  BGP Administrative Distances Internal – 90 External 170 110 EBGP – 20 IBGP – 200 Method Advanced distance vector Link state Path vector Summarization Auto and manual Manual Auto and Manual VLSM Yes Yes Yes Convergence Speed Very fast convergence Fast Slow Timers: […]

How Does Traceroute Work and Example’s of using traceroute command

Posted Leave a commentPosted in Network Technology, Packet Capture

Network administrators and system administrators use this tool most commonly in their day to day activities. Its basically a network diagnostic tool that is very handy. There are three main primary objectives of traceroute tool. These objectives fulfilled by tracroute gives an insight to your network problem. The entire path that a packet travels through […]

BGP

Posted Leave a commentPosted in BGP

Configuring Basic BGP  Comparison with Other Scalable Routing Protocols Protocol Interior or Exterior Type Hierarchy Required? Metric OSPF Interior Link-state Yes Cost IS-IS Interior Link-state Yes Metric EIGRP Interior Advanced distance-vector No Composite BGP Exterior Path-Vector No Path-vector(attributes) When to Use BGP BGP use in an AS is most appropriate when the effects of BGP […]

EIGRP

Posted Leave a commentPosted in EIGRP

EIGRP (Enhanced Interior Gateway Protocol) Hybrid Protocol / Classless / Hello Packet Updates / AD of 90 Benefits Rapid Convergence – Uses Diffusing Update Algorithm (DUAL) to achieve rapid convergence.  If no appropriate backup route exists in the local routing table, EIGRP queries its neighbors to discover an alternative route Reduced bandwidth usage – EIGRP […]

OSPF

Posted Leave a commentPosted in OSPF, Protocols

OSPF (Open Shortest Path First) Link-State Protocol / Classless / Triggered Updates/ AD of 110 Characteristics Link-State Protocol Characteristics Responds quickly to network changes Send triggered updates when a network change occurs Send periodic updates, known as link-state refresh, at long time intervals, such as every 30 minutes. Uses a 2 layer are hierarchy Transit […]