17 Questions
What is the primary purpose of hierarchical routing?
To aggregate routers into regions, called autonomous systems
What is the primary characteristic of distance-vector algorithms?
Each node computes its own routing table based on information from its neighbors
What is the primary advantage of link-state algorithms over distance-vector algorithms?
They are less prone to routing loops
What is the primary function of intra-AS routing protocols?
To route traffic within a single autonomous system
What is the primary function of inter-AS routing protocols?
To route traffic between different autonomous systems
What is the primary purpose of BGP in inter-AS routing?
To provide subnet reachability information between autonomous systems
What is the primary function of BGP in inter-AS routing?
To advertise the existence of a subnet to the rest of the Internet
What type of protocol is BGP?
Path Vector protocol
When AS3 advertises a prefix to AS1, what is AS3 promising?
That it will forward datagrams towards the advertised prefix
What is the purpose of a BGP session?
To exchange BGP messages between two BGP routers (peers)
How do entries get into the forwarding table in a router?
Through the routing algorithms and local forwarding table
What is the primary advantage of the IPv6 datagram header format?
It facilitates faster processing and forwarding of header changes.
What is the main challenge in transitioning from IPv4 to IPv6?
Operating a network with mixed IPv4 and IPv6 routers.
What is the purpose of tunneling in IPv6?
To carry IPv6 datagrams as payload in IPv4 datagrams.
What determines the end-to-end path through a network in routing?
Routing algorithm.
What is the set of links represented by in the graph abstraction?
E = set of links.
What is the cost of a path in the graph abstraction calculated as?
The sum of the costs of all links in the path.
Test your understanding of distance vector routing algorithms, including their limitations and the consequences of incorrect link cost advertisements. Learn about the convergence time and error propagation in these networks. Explore the concept of hierarchical routing and autonomous systems.
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