ch08_updated_hw

ch08_updated_hw - Homework Updated January 2007 CHAPTER 8...

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Homework Updated January 2007 CHAPTER 8 TCP/IP Internetworking L e a r n i n g   O b je c ti v e s : Last Name: ____________________________________________________ First Name: ____________________________________________________ Due Date: __________________________________ Test Your Understanding 1. a) Compare TCP and IP along the dimensions in Figure 8-2. b) Compare TCP and UDP along the dimensions in Figure 8-2. 2. a) What is routing? b) What are the three parts of an IP address? c) How long is each part? d) What is the total length of an IP address? e) Connecting different networks is the main job of what type of router? f) What type of router only connects different subnets? 3. a) How many bits are there in a mask? b) List the bits in the mask 255.255.255.0. c) What are the bits in the mask /14? d) If /14 is the network mask, how many bits are there in the network part? e) If /14 is the network mask, how many bits are there in the subnet and host parts? f) If /14 is the subnet mask, how many bits are there in the network part? g) If /14 is the subnet mask, how many bits are there in the subnet part? h) If /14 is the subnet mask, how many bits are there in the host part? Chapter 8-1
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4. a) What are multiprotocol routers? b) Why are multiprotocol routers more complex (and, therefore, more expensive) than IP- only routers? 5. Why are routing tables more complex than Ethernet switching tables? 6. a) What is routing? b) What are the four columns in the simplified routing table? c) In a routing table, what does each row represent? d) In a routing table, are there entries for do rows describe routes to individual IP addresses or ranges of IP addresses? e) Why is this good? f) Does the router know the packet’s entire route through the Internet? g) What is the purpose of the metric column? h) What is the next-hop router? 7. a) When a packet arrives, how many rows in the routing table must the router examine to find matches? b) After a router identifies all matches, what is the next thing it must do? c) After a router identifies the best match, what will it do? 8. a) Describe the process by which the router determines whether the destination IP address in a packet is in a row’s IP address range. . b) What does the router have to know to send an IP packet back out to the next-hop router? 9.
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This note was uploaded on 03/26/2011 for the course CIS 321 taught by Professor Kaliba during the Spring '07 term at North Alabama.

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ch08_updated_hw - Homework Updated January 2007 CHAPTER 8...

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