bnb group of institutions has been facing a lot of issues with its network ever since it decided to adopt online classes as a medium to impart education. the it department analyzes the issue and is of the opinion that the problems are related to the high amount of traffic due to students trying to log in from various locations; as a result, the network devices are overloaded. the it department has requested your help as a network administrator. which of the following bandwidth management techniques will you suggest in this scenario?