Multiple Choice Questions & Answers on Subnetting

1.What is the uses of subnetting?

a.It divides one large network into several smaller ones

b.It divides network into network classes

c.It speeds up the speed of network

d.None of above

Answer: It divides one large network into several smaller ones

2. _________ implies that all subnets obtained from the same subnet mask.

a) Static subnetting

b) Dynamic subnetting

c) Variable length subnetting

d) Dynamic length subnetting

Answer: Static subnetting.

3. _________ is another kind of fiber optic network with an active star for switching.

a) S/NET

b) SW/NET

c) NET/SW

d) FS/NET

Answer: S/NET

4. __________ is a high performance fiber optic token ring LAN running at 100 Mbps over distances upto 1000 stations connected.

a) FDDI

b) FDDT

c) FDDR

d) FOTR

Answer: FDDI

5. _________ is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbit/s against the original Ethernet speed of 10 Mbit/s.

a) Ethernet

b) Fast Ethernet

c) Gigabit Ethernet

d) Gigabyte Ethernet

Answer: Fast Ethernet

6. The combination of _________ and __________ is often termed the local address of the local portion of the IP address.

a) Network number and host number

b) Network number and subnet number

c) Subnet number and host number

d) Host number

Answer: Subnet number and host number

7. Which of the following are Gigabit Ethernets?

a) 1000 BASE-SX

b) 1000 BASE-LX

c) 1000 BASE-CX

d) All of the mentioned

Answer: All of the mentioned

8. If an Ethernet port on a router were assigned an IP address of 172. 16.112.1/25, what would be the valid subnet address of this host?

a) 172. 16.112.0

b) 172. 16.0.0

c) 172. 16.96.0

d) 172. 16.255.0

Answer: 172. 16.112.0

9. If you wanted to have 12 subnets with a Class C network ID, which subnet mask would you use?

a) 255. 255.255.252

b) 255. 255.255.255

c) 255.  255.255.240

d) 255. 255.255.248

Answer: 255.  255.255.240

10. What is the subnetwork number of a host with an IP address of 172. 16.66.0/21

a) 172. 16.64.0

b) 172. 16.48.0

c) 172. 16.36.0

d) 172. 16.0.0

Answer: 172. 16.64.0

11. Which two statements describe the IP address 10. 16.3.65/23?

i. The subnet address is 10 .16.3.0 255. 255.254.0. 

ii. The lowest host address in the subnet is 10. 16.2.1 255. 255.254.0. 

iii. The last valid host address in the subnet is 10. 16.2.254 255. 255.254.0.  

iv. The broadcast address of the subnet is 10 .16.3.255 255. 255.254.0. 

a) i and iii

b) ii and iv

c) i, ii and iv

d) ii, iii and iv

Answer: ii and iv

12. Your router has the following IP address on Ethernet0: 172 .16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router?

i. 172 .16.1.100 

ii. 172 .16.1.198 

iii. 172 .16.2.255 

iv. 172  .16.3.0 

a) i only

b) ii and iii only

c) iii and iv only

d) ii only

Answer: iii and iv only

13. The network address of 172. 16.0.0/19 provides how many subnets and hosts?

a) 7 subnets, 30 hosts each

b) 8 subnets, 8,190 hosts each

c) 8 subnets, 2,046 hosts each

d) 7 subnets, 2,046 hosts each

Answer: 8 subnets, 8,190 hosts each

14. You have an interface on a router with the IP address of 192. 168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

a) 6

b) 8

c) 30

d) 32

Answer: 6

15. Which of the following is the broadcast address for a Class B network ID using the default subnetmask?

a) 172.16.10. 255

b) 255.255.255. 255

c) 172.16.255. 255

d) 172.255.255. 255

Answer: 172.16.255. 255

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 broadcast address?

a) Class A, Subnet 172.16.13. 0, Broadcast address 172.16.13. 127

b) Class B, Subnet 172.16 .13.0, Broadcast address 172. 16.13.127

c) Class B, Subnet 172.16.13. 0, Broadcast address 172 .16.13.255

d) Class B, Subnet 172.16.0. 0, Broadcast address 172. 16.255.255

Answer: Class B, Subnet 172.16 .13.0, Broadcast address 172. 16.13.127

18. You need to subnet a network into 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?

a) 255 .255.255.192

b) 255 .255.255.224

c) 255. 255.255.240

d) 255 .255.255.248

Answer: 255 .255.255.224

19. To test the IP stack on your local host, which IP address will you ping

a) 127. 0.0.0

b) 1. 0.0.127

c) 127. 0.0.1

d) 255. 255.255.0

Answer: 127. 0.0.1

20. You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which can be your choise

a) 255. 255.255.192

b) 255. 255.255.224

c) 255. 255.255.240

d) 255. 255.255.248

Answer: 255. 255.255.224

21. Default network mask for CLASS A is

a) 255. 0.0.0

b) 255. 255.0.0

c) 255. 255.255.0

d) 255. 255.255.255

Answer: 255. 0.0.0

22. Default network mask for CLASS B is

a) 255. 0.0.0

b) 255. 255.0.0

c) 255. 255.255.0

d) 255. 255.255.255

Answer: 255. 255.0.0

25. Default network mask for CLASS C is

a) 255. 0.0.0

b) 255. 255.0.0

c) 255. 255.255.0

d) 255. 255.255.255

Answer: 255. 255.255.0

26. What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255 .255.255.224 subnet mask?

a) 14

b) 15

c) 16

d) 30

Answer: 30

27. You have a network that needs 29 subnets while maximizing the number of host addresses available on each subnet. How many bits must you borrow from the host field to provide the correct subnet mask?

a) 2

b) 3

c) 4

d) 5

Answer: 5

28. What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255. 255.255.224 subnet mask

a) 14

b) 15

c) 30

d) 62

Answer: 30

29. A connection oriented protocol can only use unicast addresses.

a) True

b) False

Answer: True

30. The any cast service is included in IPV6.

a) True

b) False

Answer: True