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Sample Test - IP Address, Network & Routing Protocols
Computer Networks
Multimedia University
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MULTIMEDIA UNIVERSITY
MID-TERM TEST 2
TRIMESTER 1, 2021/
TSN 2201 – COMPUTER NETWORKS
(All sections / Groups)
22 November 2021 8 p - 9 p (1 Hour 15 Minutes )
INSTRUCTIONS TO STUDENTS
- This Question paper consists of ELEVEN pages (excluding this page) with TEN questions.
- Answer all TEN questions. Each question carries 2 marks and the distribution of the marks for each subdivision is given. Maximum allotted are 20 marks.
- Write your answers (handwritten) in A4 white sheets, scan and submit in google classroom (Grading:TSN2201: T2110, Class code:h5jgfuj)
- TC01 Students: Submit the scanned answer sheets under Grading:Test 2:Lecture Section:TC TC02 Students: Submit the scanned answer sheets under Grading: Test 2:Lecture Section:TC h5jgfuj
STUDENT ID NO
Honesty Pledge:
Note:
You must write/print the following Honesty Pledge before the starting of this ‘Test2’
and affix your signature. This is a mandatory requirement, and this should be placed
as the first page of your answer sheet during your submission. Note that submission
of answer sheets from the students will not be accepted without honesty pledge.
Honesty Pledge:
I affirm that I will not give or receive any unauthorized help, through whatever
means, while taking this test and all work submitted wi ll be my own. I also
understand that cheating in this test will lead to getting me zero mark automatically.
———————————
Signature of the student
Continued...
b. Show the abbreviation for the following IPv6 address in hexadecimal notation.
(0F67:0035:0006:0000:0000:0000:0000:F300) (1 mark)
QUESTION 3:
Assume the hosts and routers use classless IPv4 addressing scheme. Routing Table for Router R1 in a configuration is given below.
Mask Network Address Next Hop Interface /28 100.50.35 - m /26 100.50.35 28 - m /24 200.50.35 - m Any Any 100.50.35 m
Show the steps involved in forwarding process if a packet arrives at Router R1 with the destination address 100.50.35 (2 marks)
Continued...
QUESTION 4:
Mark the Root Bridge, Root Ports, Designated ports and Blocked ports in the switched network given below, assuming the usage of Spanning tree protocol. Assume all links have been configured with equal path cost of 19 and all switches have default priority value of 32,768. (2 marks)
Continued...
Continued...
QUESTION 6:
Answer the following questions related to UDP packet**.**
(i) State **ALL the fields** that can be found in an UDP header **(1 mark)**(ii) The content of a UDP header in hexadecimal format is given as BAC0 007B 0124 ABBD. Identify the destination port number (in decimal) and the length of the data (in bytes) for the UDP packet. (1 mark)
QUESTION 7:
a. What are the THREE phases involved in a TCP connection? (1 marks)
b. Which TCP header control bits are used in the three phases of a TCP connection? (0 mark)
Continued...
QUESTION 9:
In electronic mail, MIME protocol transforms non-ASCII data at the sender site to NVT ASCII data and transform back to the original data at the receiver site. Assuming the usage of Radix- scheme for performing Content-Transfer-Encoding in MIME protocol, convert the following binary data to ASCII data. The Radix-64 encoding table and ASCII table are attached in this question. (2 marks) 01011010 00110111 10100110 Radix-64 encoding table
Continued...
QUESTION 10:
(a) What are the TWO protocols defined in the IPSecurity ( IPSec )? Which protocol provides confidentiality or privacy? (1 mark)
(b) Assume a packet-filtering firewall (with the following filtering rules) for a local area network at 192.168.1/24 running a web server. Does this firewall allow all packets
destined for the web server? Explain your answer. (1 mark)
Source IP Source Port Destination IP Destination Port Action 192.168.10 * * * Deny
- 192.168.1 80 Allow
- 192.168.1 443 Allow
- Deny
Continued...
Sample Test - IP Address, Network & Routing Protocols
Course: Computer Networks
University: Multimedia University
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- More from:Computer NetworksMultimedia University211 Documents
