Question

In: Computer Science

An ISP is granted the block 80.70.56.0/21. The ISP needs to allocate addresses for two organizations...

An ISP is granted the block 80.70.56.0/21. The ISP needs to allocate addresses for

two organizations each with 408 hosts, two organizations each with 128 hosts, and three

organizations each with 42 hosts.

• Find the number and range of addresses in the ISP block.

• Find the range of addresses for each organization and the range of unallocated addresses.

• Show the outline of the address distribution and the forwarding table.

Expert Solution

Given Major Network address of the block is : 80.70.56.0/21

Network ID = 21 bits.

Host ID = 32 - 21 = 11 bits.

Number of addresses possible = 2¹¹ = 2048.

Range:

Network:: 01010000.01000110.00111 000.00000000 ==> 80.70.56.0/21
Broadcast: 01010000.01000110.00111 111.11111111 ==>80.70.63.255
HostMin: 80.70.56.1
HostMax: 80.70.63.254

Therefore, Address Range is 80.70.56.0 - 80.70.63.255

Address distribution and Unallocated address range:

Subnet/ Organization	Number of Hosts Addresses required	Number of Hosts Addresses allocated	Network Address	Subnet Mask	Host Address Range	Broadcast Address	Number of addresses unallocated	Address range unused
A	408	510	80.70.56.0	/23	80.70.56.1-80.70.57.254	80.70.57.255	102	80.70.57.153-80.71.57.254
B	408	510	80.70.58.0	/23	80.70.58.1-80.70.59.254	80.70.59.255	102	80.70.59.153-80.70.59.254
C	128	254	80.70.60.0	/25	80.70.60.1-80.70.60.254	80.70.60.255	126	80.70.60.129-80.70.60.254
D	128	254	80.70.61.0	/25	80.70.61.1-80.70.61.254	80.70.61.255	126	80.70.61.129-80.70.61.254
E	42	62	80.70.62.0	/26	80.70.62.1-80.70.62.62	80.70.62.63	20	80.70.62.43-80.70.62.62
F	42	62	80.70.62.64	/26	80.70.62.65-80.70.62.126	80.70.62.127	20	80.70.62.107-80.70.62.126
G	42	62	80.70.62.128	/26	80.70.62.129-80.70.62.191	80.70.62.192	20	80.70.62.172-80.70.62.191

Address Range unallocated is : 80.70.62.193 - 80.70.63.255

Forwarding Table:

Organization	Network ID	Subnet mask	Interface
A	80.70.56.0	255.255.254.0 (/23)	e0
B	80.70.58.0	255.255.254.0 (/23)	e1
C	80.70.60.0	255.255.255.128 (/25)	e2
D	80.70.61.0	255.255.255.128 (/25)	e3
E	80.70.62.0	255.255.255.192 (/26)	e4
F	80.70.62.64	255.255.255.192 (/25)	e5
G	80.70.62.128	255.255.255.192 (/25)	e6
-	0.0.0.0	0.0.0.0	e7 (default entry)

venereology answered 1 year ago

An ISP is granted a block 10.48.0.0/16. The ISP wants to allocate addresses as follows: Group...

An ISP is granted a block 10.48.0.0/16. The ISP wants to allocate addresses as follows: Group 1: 16 customers, each with 64 addresses Group 2: 64customers, each with 16 addresses Group 3: 16customers, each with 32 addresses. a.Find the subnet mask, first and last addresses of 4th customer of each group. b.Find the number of addresses available with the ISP for future customers

A block of addresses is granted to a small organization. one of the addresses is 172.10.0.84/20....

A block of addresses is granted to a small organization. one of the addresses is 172.10.0.84/20. a) What are the first and the last addresses of this block? b) Determine the number of addresses granted to this small organization. c) The network administrator of this small organization wants to create eight subnets. Determine i) the subnet mask, ii) the address of each subnet, iii) number of addresses in each subnet, vi) the range of IP addresses in each subnet, and...

ISP have been allocated the address block 200.23.16.0/20 ISP, wants to divide its address block into...

ISP have been allocated the address block 200.23.16.0/20 ISP, wants to divide its address block into four equal sized address blocks and give one to each of four organizations. Write the address range and also subnet mask for each organization

Find the number of addresses in a block of classless addresses if one of the addresses...

Find the number of addresses in a block of classless addresses if one of the addresses is 101.10.2.8/29. Total addresses= Usable addresses= briefly explain your answer

4) An organization where you are assigned as a network admin is granted a block of...

4) An organization where you are assigned as a network admin is granted a block of addresses with the beginning address 14.24.74.0/24. The organization needs to have 3 subblocks of addresses to use in its three subnets as shown below. Create address subblocks for these 3 subnets based on the given address block. ❑ subnet 1: One subblock of 120 addresses. ❑ subnet 2: One subblock of 60 addresses. ❑ subnet 3: One subblock of 10 addresses

Find the network address, the direct broadcast address, and the number of addresses in a block;...

Find the network address, the direct broadcast address, and the number of addresses in a block; if one of the addresses in this block is 175.120.240.17/19

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...

Discuss how tax-exempt status is granted to public charities, private foundations, and commercial organizations.

Discuss how tax-exempt status is granted to public charities, private foundations, and commercial organizations. What differences are there in terms of the criteria an organization must meet to be designated tax-exempt? What governing body decides on these criteria?

Here is a series of address references given as word addresses: 18, 19, 27, 16, 21,...

Here is a series of address references given as word addresses: 18, 19, 27, 16, 21, 0, 64, 48, 19, 11, 19, 22, 4, 27, 6, and 27. Assuming a direct-mapped cache with 16 one-word blocks that is initially empty, label each reference in the list as a hit or a miss and show the final contents of the cache.

Identify 1 resource in your community that addresses the chronic disease management needs of the population....

Identify 1 resource in your community that addresses the chronic disease management needs of the population. Who is involved in this community-based model for the care of adults? MDs, RNs, dieticians? Describe the role of nurses in this community-based model of care.