Explain with a neat sketch how the traffic engineering technique of MPLS is used in 3 the given scenario. Consider an IP based application that needs to send traffic via the MPLS network. MPLS directs data from ingress LSR to egress LSRs by placing the label In the packet's header. In case of congestion in the network, a network administrator Mion may elect to explicitly define the path between nodes to ensure successful transmission of the packet