Page 186 - Computer_Science_F5

Activity 3.10: Report should include analysis of
Exploring the Application Layer
Aim:
FOR ONLINE READING ONLY
To understand the functions and
real-world applications of common
application layer protocols.
Materials Required:
Internet access; Computer or laptop;
Text editor or word processing
software; or access to library resources
(optional)
Instructions
Step 1: Research protocols
(a) Use reliable Internet sources or
library materials to research HTTP,
HTTPS, FTP, SMTP, and DNS.
(b) Take notes on each protocol’s
primary function and typical use
cases.
Step 2: Analyse features
(a) Look into the detailed features of
each protocol.
(b) Compare the advantages and
disadvantages of each.
Step 3: Explore applications
(a) Identify real-world applications that
use these protocols.
(b) Document how these applications
utilize the protocols in their
operations.
Deliverables:
Written Report summarizing your
research on each protocol, including
their primary functions and use cases.
177
Student’s Book Form Five
Computer Science Form 5.indd 177
the key features, advantages, and
disadvantages of each protocol. Chapter Three: Advanced Computer Networks
Document your findings in a portfolio.
Exercise 3.9
1. Use a network analysis tool such as
Wireshark to capture traffic from a
web browsing session or simulate
by using packet tracer. Identify and
describe the key components of an
HTTP request and response. How
do these components differ when
browsing a secure HTTPS site?
2. Use any network analyser (such as
wireshark) to set up an FTP server
and client on your local network
or simulate by using packet tracer.
Transfer a file using FTP and then
using SFTP. Compare the transfer
process and the security measures
in place. What differences do you
observe?
3. Configure an email client with
SMTP, IMAP, and POP3 settings
for a given email service. Send an
email and verify its receipt using
IMAP and POP3. What are the
key differences in how emails are
handled by IMAP versus POP3?
4. How can you explore a Session
layer and Presentation layer using
network simulation software ( such
as GNS3 or Packet tracer). Explain
their role in OSI model, primary
functions and real world examples.
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