Lab 9
docx
keyboard_arrow_up
School
Seneca College *
*We aren’t endorsed by this school
Course
2303
Subject
Information Systems
Date
Apr 3, 2024
Type
docx
Pages
2
Uploaded by AgentBarracuda3828
Lab 9
Time allotted 1.5 hours.
Lab
What to submit
Score
Marks
14.8.1
Completed pdf only
50
15.4.8
Completed pdf only
50
Activity of this lab should be submitted as one zip file (pdf files zipped as one). All submissions will only
be accepted through Moodle dropbox created for this lab. You should also attach a word document (it
can be this same document) to the zip file outlining what have you completed/learned in this lab (you
can use the table above if you wish). Any late submission of the labs submitted within the same day will
get a penalty of 20%. For every day after this an additional 10% penalty is applied for up to three days.
Any labs submitted after 3 days will be awarded a mark of zero.
Exception for this lab (because of its nature): Penalties will be waived as long as the lab is submitted
during the same day on Moodle.
14.8.1
The instructions that are supplied describe how to use Packet Tracer to simulate a network with an emphasis on TCP and UDP connections. In a simulated network environment, users create traffic using a variety of programs, including email clients, FTP, HTTP, and DNS. The functionality of the TCP and UDP protocols is understood by a step-by-step analysis of traffic. Information such as port numbers, sequence numbers, and TCP flags are noted and observed in order to evaluate the dependability of communications. Understanding the complexities of network protocols requires an examination of the relationship between TCP flags and communication phases. For every protocol, differences in the port and sequence numbers of incoming and outgoing PDUs are observed. As part of the exercise, email protocols related to TCP ports 25 (SMTP) and 110 (POP3) are detected. In general, participants benefit
15.4.8:
The lab instructs users to observe the Domain Name System (DNS) in action through commands in a Windows command prompt. First, users witness DNS translating URLs to IP addresses by pinging websites like www.icann.org
and www.cisco.com
. They then use the nslookup
command to query DNS servers for domain information, including IP addresses and mail server details. Through this, they understand DNS resolution processes and the importance of MX records in email delivery. The lab concludes by prompting users to reflect on the fundamental
purpose of DNS, emphasizing its critical role in translating domain names to IP addresses for seamless internet communication.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help