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QUESTION
a) A switch basically operates by forwarding frames from one part of the network to another, based on MAC address. Describe the three types of switching namely store and forward switching, fast-forward cut-through switching and fragment-free cut-through switching.
b) Switching in a network isn't free from problems. Some of the most important issues that arise within a switched network are switching loops, multiple frames transmission and MAC address instability. Fortunately, the IEEE 802.1D Spanning Tree Protocol (STP) has been developed to address these issues.
Describe with the aid of a diagram(s) and with reference to the following key words, how STP operates in order to solve the above mentioned problems.
c) A nice feature of a switched network is the ability to set up Virtual Local Area Networks (VLANs).
(i) Explain how frame tagging within a VLAN can be used to set up trunk ports.
(ii) Explain how inter-VLAN communication can be achieved through subinterfaces.
Question: a) Give two reasons why the building-block approach is favoured to the traditional network design approach. b) With reference to network monitoring parameters, dis
(a) Describe DES encryption with a block diagram and brief steps. (b) How does triple DES improve security. What is the effective key length of triple DES? How can 3DES be compa
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Problem a) Consider a 1000 Mbps Ethernet with a single Store-N-Forward switch mid-way in the path between two nodes A and B. Assume that there are no other nodes on the network
homlox prv hetorx orxolxpersorx
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