350-401 · Question #1259
What is a difference between OSPF and EIGRP?
The correct answer is D. OSPF uses an administrative distance of 110. EIGRP uses an administrative distance of 170.. OSPF and EIGRP are distinct routing protocols, differing in their classification, algorithms, and default administrative distances.
Question
What is a difference between OSPF and EIGRP?
Options
- AOSPF is an advanced distance vector protocol. EIGRP is a link-state protocol.
- BOSPF is a hybrid routing protocol. EIGRP is a link-state routing protocol.
- COSPF uses the DUAL algorithm. EIGRP uses the SPF algorithm.
- DOSPF uses an administrative distance of 110. EIGRP uses an administrative distance of 170.
How the community answered
(47 responses)- A9% (4)
- B2% (1)
- C2% (1)
- D87% (41)
Why each option
OSPF and EIGRP are distinct routing protocols, differing in their classification, algorithms, and default administrative distances.
OSPF is a link-state protocol, not an advanced distance-vector protocol, while EIGRP is classified as an advanced distance-vector or hybrid protocol.
OSPF is a link-state protocol, not a hybrid routing protocol, and EIGRP is considered an advanced distance-vector or hybrid protocol, not a link-state protocol.
OSPF utilizes Dijkstra's Shortest Path First (SPF) algorithm, while EIGRP employs the Diffusing Update Algorithm (DUAL) for loop-free path calculation.
OSPF (Open Shortest Path First) is a link-state routing protocol with a default administrative distance (AD) of 110, signifying its trustworthiness to a router. EIGRP (Enhanced Interior Gateway Routing Protocol) is an advanced distance-vector protocol whose internal routes have a default AD of 90, but its external routes have a default AD of 170, clearly distinguishing it from OSPF.
Concept tested: OSPF vs. EIGRP characteristics
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-mt/iro-15-mt-book/iro-cfg.html
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