a) In MPLS, is selecting the best interface for each packet at each router done when the packet enters the neh-vork or before? b) Why is this beneficial? c) What is the name of the path selected for a...

a) In MPLS, is selecting the best interface for each packet at each router done when the packet enters the neh-vork or before? b) Why is this beneficial? c) What is the name of the path selected for a particu lar conversation? d) When a source host first transn1its to a d estina tion host after a label switched path is established, what \'l'ill happen? e) Do label switching routers along the MPLS path look at the packet's IP address? The answer is not explicitly in the text. Explain your reasoning. f) On what basis does each label switched router base routing d ecisions? g) Why is MPLS transparent to the source and destination hosts? h) What are MPLS's attractions? i) What is traffic engineering? j) Can MPLS p rovide tra ffic load balancing? k) Ho\,v does the price of us ing MPLS compare with the price of simply sending tra ffic over the Internet? l) Why do firms pay this price difference?