Review Addressing and Subnetting 1. You have a network ID of 172.16.0.0 and you need to divide it into multiple subnets. You need 600 host Ids for each subnet. Which subnet mask should you assign that will allow for growth? A. 255.255.224.0 C. 255.255.248.0 B. 255.255.240.0 D. 255.255.252.0 2. You have a network ID of 172.16.0.0 with eight subnets. You need to allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign? A. 255.255.224.0 C. 255.255.248.0 B. 255.255.240.0 D. 255.255.252.0 3. You have a network ID of 192.168.55.0 and you need to divide it into multiple subnets. You need 25 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign? A. 255.255.255.192 C. 255.255.255.240 B. 255.255.255.224 D. 255.255.255.248 4. You have a Class A network address with 60 subnets. You need to add 40 new subnets in the next two years, but still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign ? A. 255.240.0.0 C. 255.252.0.0 B. 255.248.0.0 D. 255.254.0.0 5. You have a Class C network address of 192.168.19.0 with four subnets. You need the largest possible number of host IDs per subnet. Which subnet mask should you assign? A. 255.255.255.192 C. 255.255.255.240 B. 255.255.255.224 D. 255.255.255.248 6. You have a Class B network address divided into 30 subnets. You will add 25 new subnets within the next two years. You need 600 host IDs for each subnet. Which subnet mask should you assign? A. 255.192.0.0 C. 255.255.248.0 B. 255.254.0.0 D. 255.255.252.0 7. You have a network ID of 192.168.1.0 and you need to divide it into nine subnets. You need to provide for the largest possible number of host IDs per subnet. Which subnet mask should you assign? A. 255.255.255.192 C. 255.255.255.240 B. 255.255.255.224 D. 255.255.255.248 8. You have a Class C network address divided into three subnets. You will need to add two subnets in the next two years. Each subnet will have 25 hosts. Which subnet mask should you assign? A. 255.255.255.0 C. 255.255.255.224 B. 255.255.255.192 D. 255.255.255.248 9. You have a Class C network address of 192.168.88.0 and you need the largest possible number of subnets, with up to 12 hosts per subnet. What is the subnet mask? A. 255.255.255.192 C. 255.255.255.240 B. 255.255.255.224 D. 255.255.255.248 10. You need to come up with a TCP/IP addressing scheme for your company. How many network Ids must you allow for when you define the subnet mask for the network? A. One for each subnet B. One for each host ID C. One for each router interface D. One for each WAN connection E. One for each network adapter installed on each host 11. You need to come up with a TCP/IP addressing scheme for your company. Which two factors must you consider when you define the subnet mask for the network? A. B. C. D. E. The number of subnets on the network The number of host Ids on each subnet The volume of network traffic on each subnet The location of DNS servers The location of default gateways 12. You need to come up with a TCP/IP addressing scheme for your company. How many host IDs must you allow for when you define the subnet mask for the network? A. One for each subnet C. One for each WAN connection B. One for each router interface D.One for each network adapter installed on each host 13. You have an IP address of 172.16.3.57 with an 11-bit subnet mask. What are your valid hosts? A. 172.16.3.32 to 172.16.3.62 C. 172.16.3.34 to 172.16.3.62 B. 172.16.3.33 to 172.16.3.62 D. 172.16.3.57 to 172.16.3.62 14. You have a subnet mask of 255.255.255.248. How many subnets and hosts do you have? A. 2,097,150 subnets w/ 8 hosts C. 30 subnets w/ 14 hosts B. 8190 subnets w/ 6 hosts D. 6 subnets w/ 30 hosts 15. You have an IP address of 172.16.4.58 with a 12-bit subnet mask. What are your valid hosts? A. 172.16.4.48 to 172.16.4.63 C. 172.16.4.49 to 172.16.4.62 B. 172.16.4.49 to 172.16.4.63 D. 172.16.4.55 to 172.16.4.62 16. You have an IP address of 172.16.13.5 with a 255.255.255.128 subnet mask. What is your class of address, subnet address, and braodcast address? 17. If you have a 22-bit subnet mask, how many subnets and how many hosts do you have? A. 8190 subnet w/ 4096 hosts C. 2,096,138 subnets w/ 6 hosts B. 4,194,302 subnets w/ 2 hosts D. 16,384 subnets w/ 2046 hosts 18. If you have a 19-bit subnet mask, how many subnets and how many hosts do you have? A. 8190 subnets w/ 126 hosts C. 524,286 subnets w/ 30 hosts B. 524,288 subnets w/ 32 hosts D. 65,234 subnets w/ 62 hosts 19. If you have a Class B network with a 10-bit subnet mask, how many subnets and how many hosts do you have? A. 1022 subnets w/ 62 hosts C. 8190 subnets w/ 254 hosts B. 62 subnets w/ 8190 hosts D. 254 subnets w/ 126 hosts 20. If you have a Class C network with a 6-bit subnet mask, how many subnets and how many hosts do you have? A. 254 subnets w/ 30 hosts C. 62 subnets w/ 2 hosts B. 64 subnets w/ 8 hosts D. 30 subnets w/ 2 hosts 21. What is the network address for 96.2.3.16? A. 96.2.0.0 C. 96.0.0.0 B. 96.2.3.0 D. Can’t tell 22. What class of address is 190.233.27.13? A. Class A C. Class C B. Class B D. Class D 23. How many bits are in the default subnet mask for the address 219.25.23.56? A. 8 C. 24 B. 16 D. 32 24. How many hosts are supported by a Class C network address, without subnetting ? A. 254 C. 255 B. 65,000 D. 16,000 25. What is the default mask for a Class B network? A. 255.0.0.0 C. 255.255.0.0 B. 255.255.255.0 D. 255.225.0.0 26. Approximately how many unique networks are possible with a Class B address? A. 254 C. 65K B. 16K D. 2M 27. What is the decimal value of the decimal number 11001011? A. 203 C. 207 B. 171 D. 193 28. What is the binary value of the decimal number 219 ? A. 11101011 C. 11101011 B. 01011101 D. 11011011 29. Subnet bits are added to _________ to segment the network into subnets A. The network address C. The host address B. The default subnet mask D. The subnet ID 30. If eight bits were allocated to subnetting with a Class B address, how many subnets would be possible? A. 62 C. 254 B. 256 D. 16K 31. Given the subnet mask 255.255.255.240 on a Class A address, how many bits are allocated to subnetting? A. 4 C. 9 B. 5 D. 12 32. If the subnet mask for the network 150.25.0.0 is 255.255.224.0, which of these is a valid host address? A. 150.25.0.27 C. 150.25.40.24 B. 150.25.30.23 D.150.25.224.30 33. What is the first subnet ID for the network 25.0.0.0 with a subnet mask of 255.192.0.0? A. 25.192.0.0 C. 25.128.0.0 B. 25.64.0.0 D. 25.192.64.0 34. What is the maximum number of subnet bits possible with a Clas C address? A. 6 C. 14 B. 8 D. 12 35. Given a subnet mask of 255.255.240.0? A. 150.150.37.2 C. 150.150.8.12 B. 150.150.16.2 D. 150.150.49.15 36. How many hosts per subnet are possible with a Class B address, if five bits are added to the default mask for subnetting? A. 510 C. 1022 B. 512 D. 2046 37. If you were issued a Class C address, and needed to divide the network into seven subnets, with up to 15 hosts in each subnet, what subnet mask would you use? A. 255.255.255.224 C. 255.255.255.240 B. 255.255.224 D. None of the above 38. Given an IP address of 125.3.54.56, without any subnetting, what is the network number? A. 125.0.0.0 C. 125.3.54.0 B. 125.3.0.0 D. 125.3.54.32 39. The network 154.27.0.0 can support how many hosts, if not subnetted? A. 254 C. 65,533 B. 1024 D. 16,777,206 40. Which of the following is a legitimate IP host address? A. 1.255.255.2 C. 225.23.200.9 B. 127.2.3.5 D. 192.240.150.255 41. What is the significance of the address 3.255.255.255? A. It is a host number C. It is a directed broadcast B. It is a local broadcast D. It is an illegal address 42. A bit pattern of 1111 leading the first octet of an address would imply what network class? A. Class B C. Class D B. Class C D. Class E 43. What is the binary equivalent of the decimal 234? A. 11101010 C. 10111110 B. 10111010 D. 10101111 44. What is the decimal equivalent of 01011100 ? A. 96 C. 84 B. 92 D. 154 45. The purpose of subnetting is to: A. B. C. D. Segment and organize a single network at the network layer Divide a network into several different domains Allow bridging between network segments Isolate groups of hosts so they can’t communicate 46. Subnetting is achieved by the following actions: A. B. C. D. Subtracting bits from the default subnet mask Subtracting bits from the network address Adding bits to the host address Adding bits to the default subnet mask 47. If we add four bits to the default mask, what is the number of subnets we can define? A. 16 C. 14 B. 15 D. 12 48. What is the maximum number of subnet bits we can add to a default mask? A. 8 bits C. 30 bits B. 16 bits D. Depends on the address class 49. What is the subnet mask for a Class B address that has three subnet bits added? A. 255.255.240.0 C. 255.224.0.0 B. 255.255.224.0 D. 255.255.248.0 50. What is the subnet mask if we add 12 bits to the default Class A subnet mask? A. 255.255.255.240 C. 255.240.0.0 B. 255.255.240.0 D. 255.255.224.0 51. Given a subnet mask of 255.255.255.0 with a Class B address, how many subnets are available? A. None C. 16K B. 254 D. 65K 52. What happens to the number of hosts per subnet each time we add an additional subnet bit? A. Hosts are not affected C. Hosts per subnet is approximately ½ B. Available hosts are decreased by two D.Hosts per subnet is doubled 53. In order to accommodate seven subnets, how many subnet bits are required? A. 3 C. 6 B. 4 D. 7 54. If we included six subnet bits in the subnet mask for a Class C address, how many hosts would each network suport? A. 254 C. 4 B. 30 D. 2 55. What class of address is needed to provide 2,000 subnets, each with 5,000 users ? A. Class A C. Class C B. Class B D. Class D 56. Given a subnet address of 140.125.8.0 with a subnet mask of 255.255.252.0, what is the subnet address of the next higher subnet? A. 140.125.16.0 C. 140.125.32.0 B. 140.125.17.0 D. 140.125.12.0 57. Given a sunet address of 5.32.0.0 and a subnet mask of 255.224.0.0, what is the highest allowed host address on this subnet? A. 5.32.255.254 C. 5.63.255.254 B. 5.32.254.254 D. 5.63.255.255 58. If we saw the following subnet addresses, what would be the subnet mask associated with these subnets? 140.120.4.0 140.120.8.0 140.120.12.0 140.120.16.0 A. 255.255.252.0 C. 255.255.248.0 B. 255.252.0.0 D. 255.255.4.0 59. Given the network 2.0.0.0 with a subnet mask of 255.255.224.0 which of these is not a valid ID for this network? A. 2.255.192.0 C. 2.0.16.0 B. 2.0.224.0 D. 2.254.192.0 60. What is the subnet mask for an address of 175.25.0.0/24? A. 255.255.0.0 C. Depends on address class B. 255.255.255.0 D. 255.255.240.0