Question: QUESTION 3 (a) In a virtual circuit network, two types of addressing are involved which are global addressing and Virtual Circuit Identifier (VCI). Differentiate between

QUESTION 3 (a) In a virtual circuit network, two types of

QUESTION 3 (a) In a virtual circuit network, two types of addressing are involved which are global addressing and Virtual Circuit Identifier (VCI). Differentiate between these two type of addresses. [5 marks] (b) Given the IP address of a host in a network is 172.16.10.5 with the subnet mask of 255.255.255.128. With these 2 information, derive the following, (1) Prefix length [1 mark] Network address [2 marks] Broadcast address [2 marks] (c) An ISP is granted a block 16.12.64.0/20 and needs to allocate addresses for 3 organizations, each with 250 addresses. By showing your calculation, find the following (1) The network address, broadcast address, range of usable host addresses and the subnet mask for each organization [13 marks) (11) Number of unallocated addresses. [2 marks]

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