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Zorluk: OrtaRouting Concepts and Dynamic Routing Protocols

A network engineer is selecting a dynamic routing protocol for an enterprise internal network that incorporates routers from multiple hardware vendors. The network architecture requires an open-standard Interior Gateway Protocol (IGP) that uses link-state technology, supports hierarchical organization through area partitioning to constrain link-state advertisement propagation, and utilizes Dijkstra's algorithm for path determination. Which dynamic routing protocol best satisfies all of these requirements?

  1. Open Shortest Path First (OSPF)Cevap
  2. B
    Border Gateway Protocol (BGP)
  3. C
    Enhanced Interior Gateway Routing Protocol (EIGRP)
  4. D
    Routing Information Protocol version 2 (RIPv2)

Cevap

Open Shortest Path First (OSPF) is the correct dynamic routing protocol because it is an open-standard link-state IGP that uses area hierarchies and Dijkstra's Shortest Path First algorithm.
Open Shortest Path First (OSPF) satisfies all criteria: it is an open-standard IGP, uses a link-state architecture with an area hierarchy (Area 0 backbone and non-backbone areas), and runs Dijkstra's Shortest Path First algorithm to compute optimal routes.

Adım Adım Çözüm

1
Identify the protocol scope required by the scenario
The requirement specifies an Interior Gateway Protocol (IGP) for internal network routing across multi-vendor equipment.
Exterior gateway protocols like BGP handle inter-autonomous system routing, while IGPs handle intra-autonomous system routing.
2
Evaluate the underlying routing algorithm and architectural model
The scenario requires link-state protocol architecture, hierarchical area structures, and Dijkstra's algorithm execution.
OSPF maintains full link-state databases (LSDB) within areas and runs Dijkstra's Shortest Path First (SPF) algorithm to calculate loop-free paths.
3
Verify open-standard interoperability across multi-vendor devices
OSPF is fully defined by open IETF standards (RFC 2328), ensuring compatibility across all networking vendor equipment.
Open standards guarantee seamless interoperability in heterogeneous environments.

Anahtar Kavram

Link-State Dynamic Routing Protocols and OSPF Characteristics
Tahmini Süre:1m 30s
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Routing Concepts and Dynamic Routing Protocols

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