SORRY BUT THE LAST OPTION HAD BEEN CROPPED OUT WHICH IS d. t4

Which of the following statements about data communications and networks is (are) true? O a. An organizational network using different nominal data rates requires multi-speed devices to ensure compatibility between the different parts of that network O b. Scalability is highest in the case of the client-server architecture whereas availability is highest in the case of the host-based architecture O c. Dynamic routing is based on dynamic addresses whereas static routing is based on static addresses O d. a and b O e. a, b and c Which of the following statements about data communications and networks is (are) true? O a. The possible configurations for logical circuits are point-to-point circuits and multipoint circuits O b. Wireless LANS support a transmission distance of 100 meters to 150 meters O c. MAC addresses which are 48-bit long are required in IP networks and optional in non-IP networks d. a and b O e. a, b and c lec5-007 A stop-and-wait example is shown in the following figure. Note that packets arrive at Node A and wait in a queue before they are sent to B. Packets in the queue are indexed starting from number 0. Packet 0 is the packet to be sent in the example at time t_start. At time RN is increased from 0 to 1. tant to mak 0 SN Node A lost er lost Node's RN 0 13 t a. t3 O b. t2 O c. t1 Which of the following is INCORRECT about Manchester encoding? a. if there are two transitions in midsignal, the receive knows that an error must have occurred b. it is used in Ethernet data transmission c. it is a bipolar signaling d. it does not return to zero e. signal is changed from high to low, or from low to high, in the middle of the signal