Computer Science

Running head: COMPUTER SCIENCE
Computer Science
Name of the Student
Name of the University
Author’s Note

1
COMPUTER SCIENCE
Answer to Question 1:
a. The two smallest network addresses that can be assigned to the subnet of the company
having the network address 178.84.255.0 and direct broadcast address 178.84.237.63
is given below:
Net Address – 178.84. 1111 1111 .00000000
Broadcast Address – 178.84. 1110 1101 .00111111
Here the host bits are marked as blue, and the Net bits are marked as red
178.84.0000 0000. 0000 0000 178.84.0.0
178.84.0000 0000. 0100 0000 178.84.64.0
b. The smallest and the largest IP address that can be assigned to a host for each of the
subnet is given below:
Smallest IP address assigned to hosts
Subnet 1
Smallest IP 178.84. 0000 0000 .0000 0001 178.84.0.1
Largest IP address 178.84. 0000 1101 .0011 1110 178.84.13.62
Subnet 2
Smallest IP 178.84.0000 0000. 0100 0001 178.84.0.65
Largest IP address 178.84. 0000 1101 . 0111 1110 178.84.13.126
c. The two largest network address that can be assigned to the subnet of a company is
given below:
178.84.1111 0010. 1000 0000 178.84.242.128
178.84.1111 0010. 1100 0000 178.84.242.192
d. The smallest and the largest IP address that can be assigned to the host of each of the
subnet is given below:
Subnet 1

2
COMPUTER SCIENCE
Smallest IP 178.84.1111 0010. 1000 0001 178.84.242.129
Largest IP 178.84.1111 1111. 1011 1110 178.84.255.190
Subnet 2
Smallest IP 178.84. 1111 0010. 1100 0001 178.84.242.193
Largest IP 178.84. 1111 0010. 1111 1110 178.84.242.254
Answer to Question 2:
The following is the screenshot of ifconfig in Kali Linux and its output:
The IP address = 192.168.90.128

3
COMPUTER SCIENCE
The following screenshot is used for demonstrating the output of ipconfig in the host
Operating system
The IP address of the Windows Host OS is 192.168.90.1.
The following capture filter is applied in Wireshark for capturing only TCP packet having
source port 25 and source IP address of 192.168.90.128.
Scr host 192.168.90.128 and ip[9]=6