DNS Protocol: An Introduction and Investigation using Wireshark, Assignments of Wireless Networking

Networking Assignment 1 Summer 2021

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2020/2021

Uploaded on 10/14/2021

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Assignment 1
Higher National Certificate/Diploma in Computing
Student Name/ID Number:
Unit Number and Title:
Academic Year: 2021 โ€“ 2022
Unit Assessor: Sam X. Nguyen
Assignment Title:
Issue Date:
Submission Date:
Internal Verifier Name:
Date:
Submission Format:
Format:
โ—
The submission is in the form of an individual written report. This should be written in a concise,
formal business style using single spacing and font size 12. You are required to make use of
headings, paragraphs and subsections as appropriate, and all work must be supported with
research and referenced using the Harvard referencing system. Please also provide a bibliography
using the Harvard referencing system.
Submission
โ—Students are compulsory to submit the assignment in due date and in a way requested by the
Tutor.
โ—The form of submission will be a soft copy posted on http://cms.greenwich.edu.vn/ .
โ—Remember to convert the word file into PDF file before the submission on CMS.
Note:
โ—
The individual Assignment must be your own work, and not copied by or from another student.
โ—
If you use ideas, quotes or data (such as diagrams) from books, journals or other sources, you
must reference your sources, using the Harvard style.
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Assignment 1

Higher National Certificate/Diploma in Computing

Student Name/ID Number: Unit Number and Title: Academic Year: 2021 โ€“ 2022 Unit Assessor: Sam X. Nguyen Assignment Title: Issue Date: Submission Date: Internal Verifier Name: Date: Submission Format: Format: โ— The submission is in the form of an individual written report. This should be written in a concise, formal business style using single spacing and font size 12. You are required to make use of headings, paragraphs and subsections as appropriate, and all work must be supported with research and referenced using the Harvard referencing system. Please also provide a bibliography using the Harvard referencing system. Submission โ— Students are compulsory to submit the assignment in due date and in a way requested by the Tutor. โ— The form of submission will be a soft copy posted on http://cms.greenwich.edu.vn/. โ— Remember to convert the word file into PDF file before the submission on CMS. Note: โ— The individual Assignment must be your own work, and not copied by or from another student. โ— If you use ideas, quotes or data (such as diagrams) from books, journals or other sources, you must reference your sources, using the Harvard style.

โ— Make sure that you understand and follow the guidelines to avoid plagiarism. Failure to comply this requirement will result in a failed assignment. Unit Learning Outcomes: Assignment question

LO1: Short discuss one of the protocols (DNS, FTP, HTTP) and explain how it works?

LO2: Investigate the selected protocol using Wireshark?

LO1:

Figure 1. DNS Server Definition: DNS stands for Domain Name System by word, also known as the domain name system in Vietnamese. DNS is a system that helps you set up the IP address and domain name to be active on the internet.

  • DNS system basically it is a system that converts the IP address, network address to locate the domain name easy to remember domain name. For example : tinomail.com is the domain name easy to remember and it has an IP address is 45,77,251,173 these types of digital addresses will help systems work faster and more accurately. Principle of operation:

Packet information: Arrival Time: Sep 10, 2021 15:30:33.080719000 SE Asia Standard Time Frame Number: 14682

Frame Length: 74 bytes (592 bits) Capture Length: 74 bytes (592 bits) Enthenet II: Destination: Fn-LinkT_b0:2e:ff (a0:2c:36:b0:2e:ff) Source: IntelCor_67:00:25 (0c:7a:15:67:00:25) Type: IPv4 (0x0800) IPv4: Header Length: 20 bytes Total Length: 60 Fragment Offset: 0 Time to Live: 128 Source Address: 192.168.43. Destination Address: 8.8.8.