ASSIGNMENT-3

1)   You have a network ID of 140.140.0.0 and need to break it down into a number of subnets. You need 600 host IDs per subnet, with the largest number of subnets available. Which of the subnet masks should you use?

2)   You have a network ID of 206.17.250.0 and need to divide it into nine subnets. You need to provide for the largest possible number of hosts per subnet. Which of the subnet masks should you use?

3)      Jim works on a small network with two static routers (multi-homed gateways) his IP Address is 212.5.1.34

Router A IP Addresses are 212.5.1.40 and 212.5.1.67

Router B IP Addresses are 212.5.1.72 and 212.5.1.99

The subnet mask is 255.255.255.224

Jim needs to access on a regular basis a server that gives him access to the companies WAN. The server has an IP Address of 212.5.1.124. What IP Address should Jim enter as the default gateway in his network adapter properties?

4) You are the Administrator of 2 subnets called Comet and Star with a sub-net mask of 255.255.240.0. A user on a Windows XP computer called North on the Star network complains that she can not connect to a Windows 2003 Server called Haley on the Comet network. No other users on the Star network are experiencing similar problems

The IP addresses of the Router connecting the networks together are 154.44.50.2 (to Star) and 154.44.19.2 (to Comet)

You use the IPCONFIG command on North with the following results:

IP Address 154.44.17.10

Subnet Mask 255.255.240.0   

Default Gateway 154.44.50.2

What could be the problem?

5)   You have been hired as a consultant to plan a TCP/IP network for a company that has the network address of 216.176.255.0 You determine that the network will need nine subnets. Which out of the four subnet mask will provide the highest number of hosts per subnet?                                      A) 255.255.255.240 B) 255.255.255.224 C) 255.255.255.248    D) 255.255.255.192

6)      Routers are configured on a subnetted network with IP Addresses of 215.34.23.34, 215.34.23.68 and 215.34.23.140. A subnet mask of 255.255.255.224 is in use, the following exist

HostP IP Address 215.34.23.32, default gateway 215.34.23.34

HostQ IP Address 215.34.23.62, default gateway 215.34.23.74

HostR IP Address 215.34.23.92, default gateway 215.34.23.68

HostS IP Address 215.34.23.130, default gateway 215.34.23.68

Host T IP Address 215.34.23.92, default gateway 215.34.23.140

Which one of the following connections will fail? A) HostQ with Host T  B) HostS with Host R C) HostP with Host S D) HostR with Host T

7)     A company is granted the site address 201.70.64.0

The company needs six subnets. Design the subnets.

8)     A supernet has a first address of 205.16.32.0 and a supernet

mask of 255.255.248.0. A router receives three packets with

the following destination addresses:

205.16.37.44

205.16.42.56

205.17.33.76

Which packet belongs to the supernet?

Assignment-4

1)     a) What is the first address in the block if one of the addresses is 167.199.170.82/27?

b) What is the first address in the block if one of the addresses is 140.120.84.24/20?

c) Find the first address in the block if one of the addresses is 140.120.84.24/20.

2)     a) Find the number of addresses in the block if one of the addresses is 140.120.84.24/20.

b)  Find the block if one of the addresses is 190.87.140.202/29.

3) An organization is granted the block 130.34.12.64/26. The organization needs 4 subnets. What is the subnet prefix length?

4) An organization is granted a block of addresses with the beginning address 14.24.74.0/24. There are 232−24= 256 addresses in this block. The organization needs to have 11 subnets: a. two subnets, each with 64 addresses. b. two subnets, each with 32 addresses. c. Three subnets, each with 16 addresses. d. four subnets, each with 4 addresses. Design the subnets.

5) Assume a company has three offices: Central, East, and West. The Central office is connected to the East and West offices via private, point-to-point WAN lines. The company is granted a block of 64 addresses with the beginning address 70.12.100.128/26. The management has decided to allocate 32 addresses for the Central office and divides the rest of addresses between the two offices. Figure shows the configuration designed by the management.

Explain how the subnetting is taking place here.

 6) An ISP is granted a block of addresses starting with 190.100.0.0/16 (65,536 addresses). The ISP needs to distribute these addresses to three groups of customers as follows:

a. The first group has 64 customers; each needs 256 addresses.

b. The second group has 128 customers; each needs 128 addresses

c. The third group has 128 customers; each needs 64 addresses. Design the sub blocks and find out how many addresses are still available after these allocations.