Problem 3- Network Layer 1

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Problem 3- Network Layer

1.    How does a host get an IP address? How does a network get the subnet part of an IP address? How does a provider get a block of IP addresses? What is the principle behind these procedures?

2.    A router has three interfaces. How many IP addresses will it have?

3.    Convert the following 48 bit MAC addresses to IPv6 Modified EUI-64 Identifiers :

a.    3994:A707:D0CB

b.    49A7:94D0:07CD

c.    A9A6:D094:CD07

d.    B9CD:EF20:9496

Problem 4- Data Link Layer:

a)    Suppose nodes A, B, and C each attach to the same broadcast LAN (through their adapters). If A sends thousands of IP datagrams to B with each encapsulating frame addressed to the MAC address of B, will C's adapter process these frames? If so, will C's adapter pass the IP datagrams in these frames to the network layer C? How would your answers change if A sends frames with the MAC broadcast address?

b)   How big is the MAC address space? The IPv4 address space? The IPv6 address space?

c)   State the reason why an ARP query is sent within a broadcast frame? When a response sent within a frame with a specific destination MAC address?

d)  In CSMA/CD, after the 7^th collision, what is the probability that a node chooses K=12? In case, if the result is K=5, then it corresponds to a delay of how many seconds on a 10Mbps Ethernet?

e)    Suppose a computer is moved from one department to another. Does the physical address need to change? Does the IP address need to change? Does it make a difference if the computer is a laptop?