Which of the following protocols is widely used in large-scale enterprise networks to support complex networks with multiple routers and balance traffic load on multiple links?
RIP (Routing Information Protocol) is a very old (perhaps original?) routing protocol. We've had it in use since the 1980s. RIPv2 was introduced in the 1990s as a successor. Both are distance-vector protocols.
As an example of their age, RIPv2 is limited to fifteen hops across a network, which is inadequate for modern use. OSPF (Open Shortest Path First) is a link-state protocol, and in common use today.
GPT selects (A):
"(A) OSPF, which stands for Open Shortest Path First.
OSPF is a link-state routing protocol that is commonly used in large and complex networks. It's designed to efficiently route IP packets based on the network topology, and it can dynamically adapt to changes in the network, such as link failures or additions. OSPF calculates the shortest path to a destination using a metric known as cost, which is based on various factors such as link bandwidth.
RIPv2 (B) is an older distance-vector routing protocol that has limitations in large and complex networks due to its slower convergence and less efficient routing algorithms.
QoS (C) stands for Quality of Service and is not a routing protocol. It's a set of techniques used to manage and prioritize network traffic to ensure that certain types of traffic receive preferential treatment.
STP (D) stands for Spanning Tree Protocol, which is used to prevent loops in Ethernet networks. While it's important for network stability, it's not primarily used for load balancing and routing in the same way OSPF is."
If BGP was also there in those options it will become complex. I might select OSPF over BGP.
It is not RIP because it does not balance. OSPF could balance with ECPM. RIP is just plain distance (metric) and does not take into account other things
Open Shortest Path First (OSPF) is a link-state routing protocol that was developed for IP networks and is based on the Shortest Path First (SPF) algorithm.
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