GCIH · Question #75
Which of the following is a technique for creating Internet maps? Each correct answer represents a complete solution. Choose two.
The correct answer is A. Active Probing B. AS PATH Inference. Internet mapping uses Active Probing to discover network topology via probe packets and AS PATH Inference to map autonomous system relationships using BGP routing data.
Question
Which of the following is a technique for creating Internet maps? Each correct answer represents a complete solution. Choose two.
Options
- AActive Probing
- BAS PATH Inference
- CObject Relational Mapping
- DNetwork Quota
How the community answered
(24 responses)- A88% (21)
- C4% (1)
- D8% (2)
Why each option
Internet mapping uses Active Probing to discover network topology via probe packets and AS PATH Inference to map autonomous system relationships using BGP routing data.
Active Probing involves sending network packets such as ICMP or UDP probes - for example via traceroute - to systematically discover routers, links, and hop-level topology across the Internet.
AS PATH Inference uses BGP routing table data to deduce interconnections between autonomous systems, enabling construction of large-scale Internet-level topology maps without direct probing.
Object Relational Mapping (ORM) is a software development technique for mapping relational database tables to programming language objects and has no relation to network topology discovery.
Network Quota refers to bandwidth or data usage limits enforced on users or interfaces and is not a methodology for discovering or mapping Internet topology.
Concept tested: Internet topology mapping - active probing and BGP AS PATH inference
Source: https://www.caida.org/projects/ark/
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