Question Review VLSM

Review Question

1.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?

2^5-2=30

A. 14

B. 15

C. 16

D. 30

E. 31

F. 62

2. 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?

2^5=32

A. 2

B. 3

C. 4

D. 5

E. 6

F. 7

3. What is the subnetwork address for a host with the IP address 200.10.5.68/28?

255.255.255.240 256-240= 16

0 16 32 48 64 80 200.10.5

A. 200.10.5.56

B. 200.10.5.32

C. 200.10.5.64

D. 200.10.5.0

4. The network address of 172.16.0.0/19 provides how many subnets and hosts?

2^3=8 subnets 2^13-2=8190

A. 7 subnets, 30 hosts each

B. 7 subnets, 2,046 hosts each

C. 7 subnets, 8,190 hosts each

D. 8 subnets, 30 hosts each

E. 8 subnets, 2,046 hosts each

F. 8 subnets, 8,190 hosts each

5. Which two statements describe the IP address 10.16.3.65/23? (Choose two.)

255.255.254.0

256-254=2. 0, 2.0, 4.0, 6.0, 8.0…254.0

10.16.0.0 10.16.1.255 0.1-1.254

10.16.2.0 10.16.3.255 2.1-3.254

A. The subnet address is 10.16.3.0 255.255.254.0.

B. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.

C. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.

D. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

E. The network is not subnetted.

6. If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host

belongs to?

256-252 = 4 0 4 8 12 16

A. 172.16.45.0

B. 172.16.45.4

C. 172.16.45.8

D. 172.16.45.12

E. 172.16.45.16

7. On a VLSM network, which mask should you use on point-to-point WAN links in order to

reduce the waste of IP addresses?

A. /27

B. /28

C. /29

D. /30

E. /31

8. What is the subnetwork number of a host with an IP address of 172.16.66.0/21?

256-248=8 0 8 16 24 32 40 48 56 64 72

A. 172.16.36.0

B. 172.16.48.0

C. 172.16.64.0

D. 172.16.0.0

9. 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?

2^3-2=6

A. 6

B. 8

C. 30

D. 62

E. 126

10. You need to configure a server that is on the subnet 192.168.19.24/29. The router has the first

available host address. Which of the following should you assign to the server?

256 – 248 =8 0 8 16 24 32

A. 192.168.19.0 255.255.255.0

B. 192.168.19.33 255.255.255.240

C. 192.168.19.26 255.255.255.248

D.192.168.19.31 255.255.255.248

E. 192.168.19.34 255.255.255.240

11. You have an interface on a router with the IP address of 192.168.192.10/29. What is the

broadcast address the hosts will use on this LAN?

256-248=8 0 8 16 24 32 192.168.192.8 192.168.192.15

A. 192.168.192.15

B. 192.168.192.31

C. 192.168.192.63

D. 192.168.192.127

E. 192.168.192.255

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