Question

In: Computer Science

Assume that we have a machine with IP Address 15.107.33.204 with netmask 255.255.255.240. Assume that you...

Assume that we have a machine with IP Address 15.107.33.204 with netmask 255.255.255.240. Assume that you manage a /11 address space, and that we have fully divided it up into child networks the size of the one on which this machine resides.

  1. How many useable subnets of this size can be created?

  1. How many useable addresses will be available on each of these subnets?
  1. List the IP addresses of the first three and last three of these useable subnets.
  1. Give the network number (IP Address) of the next to the last useable subnets.
  1. Give the broadcast address of the next to the last useable subnet.

  1. Give the first useable address on the next to last useable subnet.

  1. Give the last useable address on the next to last useable subnet.

Solutions

Expert Solution

Answer1.. The subnet mask of the current IP address is 255.255.255.240 or /28 but this mask is generated from /11 mask so clearly increase of 17bits in network address. Thus allowing 2^17 subnet i.e., 131072 subnet possible.

Answer2. Host bits available is 4 bit so ^4 i.e 16 IP will be available but only 14 will be usable since first and last address of every subnet is not usable. They are network address and broadcast address respectively.

Answer3.

15.107.33.193 ,

15.107.33.194,

15.107.33.195,

15.107.33.204,

15.107.33.205,

15.107.33.206.

Answer4. The last useable IP is 15.107.33.206, The network number next to this is 15.107.33.208.

Answer5. The broadcast address address next to the last useable IP is 15.107.33.207, this is because each subnet has 16 IP address block and 15.107.33.204 comes under 15.107.33.192 subnet block.

Answer6. First useable address next to the last useable subnet is 15.107.33.209. Since next to 15.107.33.192 network is 15.107.33.208, first IP i.e, 15.107.33.208 is network address and is not usable so next usable is 15.107.33.209

Answer7. Last useable address next to last useable subnet will be 15.107.33.22. This is because in the grouping of 16 IP the next block of IP will be from 15.107.33.208 to 15.107.33.223, but since the last is not usable so 15.107.33.222 will be the answer.


Related Solutions

What are IP address ports and IP address classes?
What are IP address ports and IP address classes?
You are currently troubleshooting a networking issue. You have narrowed down the IP address that is...
You are currently troubleshooting a networking issue. You have narrowed down the IP address that is causing the issue, but you need to know the host name of the computer. What command would give you this information? The internet browser is unable to find the host you are trying to reach. What command(s) should you use to try to rectify the situation?
Find the network ip and broadcast ip of the ip address: 192.168.225.212/27
Find the network ip and broadcast ip of the ip address: 192.168.225.212/27
If you have a network with 300 computers explain how you would setup an IP address...
If you have a network with 300 computers explain how you would setup an IP address scheme to meet the needs of the network (draw this if necessary) If you get a computer that has the wrong IP address and is assigned via DHCP how can you get a new address? Answer for command line and gui. What does it mean when you get a 169.x.x.x address?
Given an IP address and mask of 192.168.0.0 /24 (address / mask), design an IP addressing...
Given an IP address and mask of 192.168.0.0 /24 (address / mask), design an IP addressing scheme that satisfies the following requirements. Network address/mask and the number of hosts for Subnets A and B will be provided by your instructor. Subnet Number of Hosts Subnet A 55 Subnet B 25 The 0th subnet is used. No subnet calculators may be used. All work must be shown on the other side of this page. Subnet A Specification Student Input Points Number...
If you have a computer, why would you want an IP address? Why would you want...
If you have a computer, why would you want an IP address? Why would you want a URL? Would you ever want both? Why? Detailed answer please.
Problem 1. Network Address Suppose an ISP has the following IP address block: 130.12.128.0/23 a. Assume...
Problem 1. Network Address Suppose an ISP has the following IP address block: 130.12.128.0/23 a. Assume that the ISP wants to divide its address block (130.12.128.0/23) into two equal-sized contiguous address blocks, and give one of these address blocks to its customers (C1 and C2). Provide network addresses (of the form a.b.c.d/x) for C1 and C2. b. Now let’s assume that the ISP wants to divide its address block (130.12.128.0/23) into four equal-sized contiguous address blocks, and give one of...
Given an IP address 138.112.25.60, with the mask 255.255.255.240: Calculate the network address and broadcast address...
Given an IP address 138.112.25.60, with the mask 255.255.255.240: Calculate the network address and broadcast address of the network it belongs to. For 138.112.25.47 and 38.112.25.49, which one is in the same network as 138.112.25.60 does, and which one is not. Show the necessary calculation steps and explanation.
[Only answer part 2] part 1: What is the public IP address of your machine? How...
[Only answer part 2] part 1: What is the public IP address of your machine? How can you know your public IP address of the machine? (Hint: ask Google.) How does a website know your public IP address? Is it different from the IP address shown on the network interface obtained by ifconfig? part2: Why are they different? (Hint: NAT.) What does this NAT thing do (briefly explain it in one sentence)? Who did it? (Hint: the VirtualBox software may...
Consider a router with the IP address 192.168.1.254/26:
Consider a router with the IP address 192.168.1.254/26: a) Indicate the subnet mask for the above address.b) Demonstrate calculation of the network address (including binary and decimal values).c) Write the relevant DHCP subnet configuration text for this network where the first 50 addresses will be dynamically allocated to hosts.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT