Homework8_1(due 8_29)

Homework8_1(due 8_29) - routing algorithm Why or why not No...

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Homework 8-1 1) What are the two main functions of a datagram-based network layer? What additional functions does a VC-based network layer have? Datagram-based network layer: forwarding; routing. Additional function of VC-based network layer: call setup. 2) Compare and contrast link-state and distance-vector routing algorithms. Link state algorithms: Computes the least-cost path between source and destination using complete, global knowledge about the network. Distance-vector routing: The calculation of the least-cost path is carried out in an iterative, distributed manner. A node only knows the neighbor to which it should forward a packet in order to reach given destination along the least-cost path, and the cost of that path from itself to the destination . 3) It is necessary that every autonomous system use the same intra-autonomous
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Unformatted text preview: routing algorithm? Why or why not? No. Each AS has administrative autonomy for routing within an AS. 4) What is the decimal equivalent of the IP address ? and convert it into Hex-decimal. 11011111 00000001 00000011 00011011 df 1 3 1b 5) Consider a LAN to which ten host interfaces and three router interfaces are attached. Suppose all three LANs use class C addresses. The IP addresses for the 13 devices will be identical in which of the first 32 bits? 24 6) Suppose there are three routers between source and destination hosts. Ignoring fragmentation, an IP segment sent from source host to destination host will travel over how many interfaces? How many routing tables will be indexed to move the datagram from source to destination? 8 interfaces; 3 forwarding tables...
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