Ericsson ECP-206 Exam - Topic 7 Question 31 Discussion

Actual exam question for Ericsson's ECP-206 exam

Question #: 31
Topic #: 7

[All ECP-206 Questions]

In OSPFv2, which route characteristic is used to determine the best path?

Ajitter

Bpacket loss

Ccost

Ddelay

Show Suggested Answer

Suggested Answer: C

In OSPFv2, the route characteristic that is used to determine the best path is the cost. The cost is a metric that represents the link bandwidth, delay, reliability, or other factors. The cost is inversely proportional to the bandwidth, meaning that a higher bandwidth link has a lower cost. The cost of a route is calculated by adding the costs of all links along the path. OSPFv2 uses the following formula to calculate the cost of an interface:

Cost = Reference bandwidth / Interface bandwidth in bps

The reference bandwidth is a constant value that can be configured by the network administrator. By default, it is 100 Mbps. The interface bandwidth is the actual bandwidth of the interface in bits per second.For example, if an interface has a bandwidth of 10 Mbps, its cost would be 100 Mbps / 10 Mbps = 101415.

OSPFv2 does not use jitter, packet loss, or delay as route characteristics to determine the best path. Jitter is the variation in latency or delay between packets. Packet loss is the percentage of packets that are dropped or corrupted during transmission. Delay is the time it takes for a packet to travel from source to destination.These characteristics are not part of the OSPFv2 protocol and are not advertised in OSPFv2 LSAs1617.

by Mary at Sep 19, 2024, 05:56 AM

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Gerald

7 months ago

Just to clarify, cost is based on bandwidth, right?

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Bernadine

8 months ago

Cost is definitely the right answer here.

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Tamera

8 months ago

Wait, I thought delay was more important?

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Susana

8 months ago

Totally agree, cost is key!

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Barabara

8 months ago

OSPFv2 uses cost to determine the best path.

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Shizue

9 months ago

Cost seems right for OSPF, but I wonder if jitter or packet loss ever play a role in path selection?

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Raul

9 months ago

I’m a bit confused; I thought delay was important too, but maybe that’s more for other protocols?

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Jesus

9 months ago

I remember practicing a question about OSPF metrics, and cost definitely stood out as the main factor.

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Tiara

9 months ago

I think OSPF uses cost to determine the best path, but I’m not 100% sure.

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Murray

9 months ago

Ah, I've got it! OSPF uses the cost metric to determine the best path. The cost is calculated based on factors like bandwidth, delay, and other link characteristics. I'm confident that's the right answer.

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Hermila

9 months ago

Cost! That's the route characteristic used in OSPF to determine the best path. I remember learning that in my networking class. This should be an easy one.

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Sherly

9 months ago

Okay, let me think this through. OSPF uses cost as the primary metric to determine the best path, right? I'm pretty sure that's the right answer, but I'll review the OSPF concepts just to make sure I'm not missing anything.

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Alica

9 months ago

Hmm, this seems like a pretty straightforward OSPF question. I'm pretty confident I know the answer, but I'll double-check the details just to be sure.

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Donette

9 months ago

Ugh, I'm a little unsure about this one. I know OSPF has some specific metrics it uses, but I can't quite recall which one is used to determine the best path. I'll have to think this through carefully.

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Royce

2 years ago

Ah, the age-old question: should I go with the cost, or the cost? I'm thinking cost. C is the way to go, my friends.

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Shonda

2 years ago

Jitter? Sounds like something you'd use to measure the performance of your espresso machine, not a routing protocol. C is the clear winner here.

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Dorsey

2 years ago

I always thought delay was the most important factor, but I see now that cost is the way to go in OSPFv2.

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Rochell

2 years ago

Yeah, jitter does sound more like a coffee term. Cost is definitely the key factor in OSPFv2.

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Haydee

2 years ago

I agree, C is the correct answer. Cost is used to determine the best path in OSPFv2.

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Walker

2 years ago

Packet loss? What is this, the 90s? We're living in the era of reliable networks now. Gotta be C, the cost-based routing.

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Dyan

2 years ago

Delay? Really? Who cares about how long it takes the packets to get there, as long as they arrive eventually, right? I'm going with C, the cost option.

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