Computer Networks test questions

1.We have two hosts A and B that are using sliding window protocol for flow control, and to transfer data from A to B full duplex link is used. The send window size and receive window size is 5 packets each. Data packets that are sent only from A to B are all 1000byte long and the transmission time for such a packet is 50µs. Acknowledgement packets that are sent only from B to A are very small and it requires negligible transmission time. In this communication the maximum achievable throughput, if the propagation delay over the link is 200µs, is
9.12 x 106 bps 10.09 x 106 bps 12.33 x 106 bps 11.11 x 106 bps

2.Which one of the following statement does not hold true about Internet protocol (IP)
IP packets from the same source to the same destination can take different routes in the network If the packet is unable to reach its destinations within a given number of hops, IP ensures that a packet is discarded A computer can have multiple IP address All of the above

3.Let computer A and computer B that have the IP addresses 10.105.1.113 and 10.105.1.91 respectively use the same net mask N. For A and B to belong to same network, the value of N should not be
255.255.255.224 255.255.255.0 255.255.255.128 255.255.255.192

4.Consider the packets are correctly delivered. In the best case, how many bytes including headers are delivered to the IP layer at the destination, for one application message? Consider only data packets
200 220 240 260

5.Neglecting errors, acknowledgements and other overheads, the rate at which application data is transferred to host Hc, is
150.8kbps 245.6kbps 400.9kbps 354.5kbps