1.You Have a Network Address of 202.200.55.0 with a Subnet Mask of 255.255.255.224. Which

1.You have a network address of 202.200.55.0 with a subnet mask of 255.255.255.224. Which of the following is the broadcast address for subnet 202.200.55.96?

(a) 202.200.55.1

(b) 202.200.55.96

(d) 202.200.55.97

(e) 202.200.55.255

(f) 202.200.55.111

2.You have a network address of 129.111.0.0 and a subnet mask of 255.255.224.0. Which two of the following are valid subnet addresses? (Choose two)

(a) 129.111.160.0

(b) 129.111.0.32

(d) 129.111.0.96

(e) 129.111.96.0

(f) 129.175.0.0

3.You have been asked to configure a router to connect to network 10.96.0.0. Your supervisor tells you to use an additional three bits in the subnet mask. Which subnet mask should you use to configure the router?

(a) 240.0.0.0

(b) 255.224.0.0

(d) 255.240.0.0

(e) 224.0.0.0

(f) 255.255.220.0

(g) 255.100.0.0

4. You are examining the network design documents and you see a network address listed as 10.20.0.0/13. What is the subnet mask used for this network?

(a) 255.7.0.0

(b) 255.240.0.0

(d) 255.255.240.0

(e) 255.248.0.0

(f) 255.33.0.0

5. You have a network address of 201.79.187.0 and a subnet mask of 255.255.255.192. Which three of the following are valid subnet addresses? (Choose three)

(a) 201.79.187.128

(b) 201.79.187.48

(d) 201.79.187.64

(e) 201.79.187.224

(f) 201.79.187.192

(g) 201.79.187.32

6.You are configuring a network and have been assigned the network address of 221.12.12.0. You want to subnet the network to allow for 5 subnets with 20 hosts per subnet. Which subnet mask should you use?

(a) 255.255.255.224

(b) 255.255.255.192

(d) 255.255.255.128

(e) 255.255.255.248

7.Your network has been assigned 168.11.0.0 as the network address. You have determined that you need 70 subnets. Which subnet mask value should you select to provide 70 subnets?

(a) 255.255.252.0

(b) 255.255.240.0

(d) 255.255.255.0

(e) 255.255.248.0

8. Your network has been assigned 200.55.6.0 as the network address. You have determined that you need six subnets. Which of the following should you use as your subnet mask to provide six subnets?

(a) 255.255.255.128

(b) 255.255.255.252

(d) 255.255.255.248

(e) 255.255.255.192

(f) 255.255.255.240

9. You have been asked to configure a router to connect to network 192.168.3.48. Your supervisor tells you to use an additional four bits in the subnet mask. Which subnet mask should you use to configure the router?

(a) 255.255.255.52

(b) 255.255.255.15

(d) 255.255.255.4

(e) 255.255.255.240

(f) 255.255.255.63

(g) 255.255.255.248

10.You have a network address of 160.88.0.0 with a subnet mask of 255.255.248.0. Which of the following is the broadcast address for subnet 160.88.64.0?

(a) 160.88.95.255

(b) 160.88.71.255

(d) 160.88.64.255

(e) 160.88.255.255

(f) None of the above

11.What class of IP address is 191.168.1.0?

(a) Class A

(b) Class B

(d) CIDR

(e) Class C

(f) None of the above

12. Is the address 171.81.0/24 subnetted?

13. Which of the following are private IP addresses that can be assigned to a host?

(a) 12.17.1.45

(b) 10.255.255.254

(d) 192.168.1.5

(e) 239.0.0.1

(f) Answers (b) and (d)

14. What is the broadcast ID of the seventh subnet created using 172.16.0.0/28?

(a) 172.16.111.0

(b) 172.16.0.0

(d) 172.16.0.96

(e) 172.16.0.110

(f) 172.16.0.111

(g) None of the above

15. What is the ideal mask to use on point-to-point serial links?

16. Is 172.16.255.0/18 a valid host IP?

17. Julie’s IP address is 192.168.1.21 255.255.255.240. Joost’s IP is 192.168.1.14/28.

Their computers are connected together using a crossover Ethernet cable. Why

can’t they ping each other?

(a) The subnet masks are different

(b) They can. This is another trick question.

(d) Because the router does not support subnetting.

(e) Because it should be a straight-through cable.

18. Why is VLSM important to modern IP networks?

(a) Because networks that use the same mask cannot route.

(b) Because every subnet must use a different mask to avoid conflicts.

(d) Because it allows each subnet in a routed system to be correctly sized for the requirement.

19. What must a routing protocol be able to do to support VLSM?

(a) Multicast

(b) Automatically summarize networks to a common mask