In this project, you’ll be working with a Class A private network. Each of the q
ID: 3904118 • Letter: I
Question
In this project, you’ll be working with a Class A private network. Each of the questions is based on the following scenario and should be answered as a whole.
Scenario: Starting IP address of 119.0.0.0 and default subnet mask of 255.0.0.0
Your employer Switch is opening a new location and the IT director has assigned you the task of calculating the subnet numbers for the new LAN.
You’ve determined that you need 1900 subnets for the Class A network beginning with the network ID 119.0.0.0.
How many host bits will you need to use for network information in the new subnets?
Remember, with one Class A network, you start with 24 bits left for the host that you can borrow from.
10 bits
11 bits
12 bits
13 bits
QUESTION 2
Continuing the previous scenario...
How many possible hosts can each subnet contain?
2048 IP addresses including the broadcast and the network ID.
4096 IP addresses including the broadcast and the network ID.
8192 IP addresses including the broadcast and the network ID.
16384 IP addresses including the broadcast and the network ID.
QUESTION 3
Continued from the previous scenario...
What is the new subnet mask in dotted decimal format?
Remember, we started with a class A which has a default subnet mask of 255.0.0.0
255.255.224.0
255.255.255.224
255.224.0.0
255.255.240.0
QUESTION 4
Given the previous scenario...
What is the CIDR notation for this network?
/18 represents how many bits are in the new network ID
/19 which represents how many bits are in the new network ID
/20 represents how many bits are in the new network ID
/21 represents how many bits are in the new network ID
a.10 bits
b.11 bits
c.12 bits
d.13 bits
Explanation / Answer
Question 1: B
11 bits required as 2^11 is = 2048 so we can have 1900 subnets
Question 2: C
so class has 24 bits for hosts we have given 11 bits to the subnet remainng bits are 13 so we can have 2^13 = 8192
Answer 3:
Answer is A: for subnet mask we will have 1's in network id and subnet id which is 8 bits + 11 bits which 23 bits
11111111 . 11111111. 11100000.00000000
255.255.224.0
Question 4:
Answer is B : which represents 1's in subnet mask
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