Q6 On the Transport Layer services are provided by the Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). (a) What is the difference in the service offered to applications by the TCP and UDP protocols? (8 marks) (b) For each of the following applications determine whether you would use TCP or UDP and explain the reasons for your choice I. File transfer I Watching a real time streamed video III. Web browsing IV. A Voice Over IP (VolP) telephone conversation (3 marks) (3 marks) (3 marks) (3 marks) (c) Both TCP and UDP use port numbers. What are these port numbers used for? (5 marks) (2 marks) (2 marks) (2 marks) Q7 A host was given the IPv4 address 192.168.3.219/27, what are the following values? (a) The network address to which the host belongs. (b) The network broadcast address to which the host belongs. (c) The total number of hosts available in the network