Subnetting Part-03
Golam Kibria Ezaz
Jr. Systems Engineer at STBL | B.Sc. in Computer Science (CSE) - DIU | CCNA | MTCNA
Question-21
Which letter VLAN would the host 192.168.61.249 be placed? For your answer simply select the letter of the Vlan (i.e. 'A')
The correct answer is: B
Count the powers of two?until you find the first power of two which is above the needed amount of hosts for the larger network. This is the amount of host bits you will need.
Question-22
The following shows a 'router on a stick' scenario. Given the partial?show run?command information from the router:
interface FastEthernet1/1.2 encapsulation dot1Q 2 ip address 192.168.0.1 255.255.255.128
interface FastEthernet1/1.3 encapsulation dot1Q 3 ip address 192.168.0.129 255.255.255.128
interface FastEthernet1/1.4 encapsulation dot1Q 4 ip address 192.168.1.1 255.255.255.128
You plan to add two new VLANS: VLAN 5 and VLAN 6. VLAN 5 should support 53 hosts, while VLAN 6 should support 34 hosts. Which of the following answers makes sense. For your answer simply give the letter of the correct choice (e.g. 'A').
A) 192.168.1.63 255.255.255.192 on Fa1/1.6
B) 192.168.1.193 255.255.255.192 on Fa1/1.6
C) 192.168.1.100 255.255.255.192 on Fa1/1.5
D) 192.168.0.84 255.255.255.192 on Fa1/1.5
The correct answer is: B
Make sure the subnet mask provides a large enough block for the needed hosts. Once you find the needed netmask, make sure that the possible IP address is not within any of the previously existing networks.
Question-23
Using the diagram below, which of the following IP addresses would be valid to asign to interface Fa0/3? For your answer type out the IP address.
192.168.0.24
192.168.0.86
192.168.0.150
The correct answer is: 192.168.0.24
See which IP fits outside the currently existing subnets.
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Question-24
What is the subnet mask in use in this network?
The correct answer is: 255.255.255.224
Question-25
What is the last valid host on the network that 172.23.111.20/17 is a part of?
The correct answer is: 172.23.127.254
The last usable IP is one less than the broadcast. Find the next block, then subtract two from that.
Question-26
Enter the broadcast address for the network 192.168.160.128 255.255.255.128: 192.168.160.255
Question-27
Enter the last valid host on the network that the host 172.22.133.87 255.255.255.128 is a part of: 172.22.133.126?
Question-28
Enter the first valid host on the network that the host 192.168.119.229 255.255.255.128 is a part of: 192.168.119.129?
Question-29
Enter the first valid host on the network that the host 10.112.129.76 255.255.254.0 is a part of: 10.112.128.1
Question-30
Enter the last valid host on the network 10.38.84.128/25: 10.38.84.254
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"Subnetting is like giving your network a well-organized address book—essential for streamlined and efficient communication."