12. The dotted-decimal notation of 10000001 00001011 00001011 11101111 is 129.11.11.248 ) True ii) False 13. The class of IP address 227.12.14.87 is C ) True ii) False 14. The subnet mask indicates which bits are subnet number and which are host number ) True ii) False 15. In Mac address 00-15-C5-49-04-A9, the red numbers (49.04.19) is assigned to vendors by IEEE ) True ii) False 16. Address Resolution Protocol (ARP) provides IP address when MAC address is given ) True ii) False 17. Link state protocols like OSPF is based on distributed Bellman-Ford algorithm ) True ii) False 18. Flow control is an algorithm to prevent the sender overloading the network. ) True ii) False 19. TCP does not use windowing or acknowledgments so application layer protocols must provide error detection. True ii) False 20. UDP segments do not contain sequence or acknowledgment fields. ) True ii) False