Lab 9 answer sheet
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School
Algonquin College *
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Course
CST8109
Subject
Information Systems
Date
Apr 3, 2024
Type
docx
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3
Uploaded by BlossomingFlower234
Lab 9 answer sheet
Name: Student number: Q1) Add a screenshot for Task 1 step 6 (showing the whole Wireshark window) and highlight the APR
request and the reply with the same color
, and the
DNS query and the reply with another colors
. Also, answers these questions:
For the DNS QUERY
source port: 62095
destination port: 53
For the DNS RESPONSE
source port: 53
destination ports: 62095
How was the source port chosen on the client? The first randomly selected available port
How was the destination port chosen on the server?
That is the assigned port.
What is the name of the DNS server that responded?
The eagle server
Q2) Screenshot for Task 2 step 5 (showing the whole Wireshark window) and highlight the two http request frames
Which layer 4 protocol is used for http? Transmission Control Protocol
Which flags are set for each stage of the three way handshaking? PSH, ACK
What were the source and destination ports in the first web page request? Source Port: 63032
Destination Port: 80
What were the source and destination ports of the acknowledged packet of the previous question? Was the acknowledgment sent by the layer 4 or the layer 7 protocol? Source Port: 80
Destination Port: 63032
What were the source and destination ports in the second web page request? Source Port: 50588
Destination Port: 80
Did the client use the same source port as it did for the 1st web page? No the client did not.
Is this the same layer 4 sessions, or a different one?
It is a different session.
Q3) Screenshot for Task 3 step 4 (showing the whole Wireshark window) and highlight the DHCP Discover, Offer, Request and Acknowledgement
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