QA$.$ Carefully read each question and then choose the letter of the correct answer$\mathrm{.}1.$ What is internet?a$)$ A single networkb$)$ Interconnection of local area networksc$)$ A wireless networkd$)$ A vast collection of different networkse$)$ a and d are correct$2.$ The time required to examine the packets header and determine where to direct the packet is part ofa$)$ Queuing delayb$)$ Transmission delayc$)$ Processing delayd$)$ Propagation delaye$)$ b and d are correct$3.$ The resources needed for communication between end systems are reserved for the duration of sessionbetween end systems ina$)$ Packet switchingb$)$ Line switchingc$)$ Frequency switchingd$)$ Circuit switchinge$)$ b and c are correct$4.$ A set of rules that governs data communicationa$)$ Standardsb$)$ Protocolsc$)$ RFCsd$)$ Applicationse$)$ Physical Layer$5.$ In the transfer of file between server and client, if the transmission rates along the path is $50$Mbps$,30$Mbps$,100$Mbps$,40$Mbps$.$ The throughput is usuallya$)50$Mbpsb$)40$Mbpsc$)30$Mbpsd$)20$Mbpse$)100$Mbps$6.$ Unshielded twisted pair $($UTP$)$ cable is:a$)$ A Network Layer.b$)$ A cable that transmits data in form oflight.c$)$ A coaxial cabled$)$ A pair of insulated copper wires thatare twisted about each other.e$)$ Wireless Protocols$7.$ Most packet switches use this principlea$)$ Stop and waitb$)$ Stop and forwardc$)$ Store and waitd$)$ Stop and storee$)$ Store and forward$8.$ In a network, If P is the only packet being transmitted and there was no earlier transmission, which ofthe following delays could be zeroa$)$ Propagation delayb$)$ Queuing delayc$)$ Transmission delayd$)$ Processing delaye$)$ a and c are correct