Assignment4-Solutions

Assignment4-Solutions - Assignment 4 Questions Review...

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Assignment 4 – Questions Review Questions: R2 - R4, R11 - R13, R15, R17, R21, R23 Problems Questions: P8, P11, P17, P18 ============================================================== Chapter 4 Review Questions 2. Datagram-based network layer: forwarding; routing. Additional function of VC-based network layer: call setup. 3. Forwarding is about moving a packet from a router’s input link to the appropriate output link. Routing is about determining the end-to-routes between sources and destinations. 4. Yes, both use forwarding tables. For descriptions of the tables, see Section 4.2. 11. HOL blocking – a queued packet in an input queue must wait for transfer through the fabric because it is blocked by another packet at the head of the line. It occurs at the input port. 12. Yes. They have one address for each interface. (1.a.1) 13. 11011111 00000001 00000011 00011100 (1.b.2) 15. 8 interfaces (1.c.4); 3 forwarding tables (1.d.3) 17. The 8-bit protocol field in the IP datagram contains information about which transport
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Assignment4-Solutions - Assignment 4 Questions Review...

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