22MCAL17 Computer Networks Laboratory syllabus for MCA

1 Implement three nodes point – to – point network with duplex links between them. Set the queue size, vary the bandwidth and find the number of packets dropped.

2 Implement the data link layer framing methods such as character, character-stuffing and bit stuffing.

3 Write a program to compute CRC code for the polynomials CRC-12, CRC-16 and CRC CCIP

4 Develop a simple data link layer that performs the flow control using the sliding window protocol, and loss recovery using the Go-Back-N mechanism.

5 Implement Dijsktra‟s algorithm to compute the shortest path through a network

6 Implement data encryption and data decryption

7 Simulate the network with five nodes n0, n1, n2, n3, n4, forming a star topology. The node n4 is at the centre. Node n0 is a TCP source, which transmits packets to node n3 (a TCP sink) through the node n4. Node n1 is another traffic source, and sends UDP packets to node n2 through n4. The duration of the simulation time is 10 seconds.

8 Simulate to study transmission of packets over Ethernet LAN and determine the number of packets drop destination. Demonstration Experiments ( For CIE ) if any 9 Simulate the different types of internet traffic such as FTP and TELNET over a wired network and analyze the packet drop and packet delivery ratio in the network.

Course outcomes (Course Skill Set):

At the end of the course the student will be able to:

• Implement data link layer farming methods.
• Analyze error detection and error correction codes.
• Implement and analyze routing and congestion issues in network design.
• Implement Encoding and Decoding techniques used in presentation layer.
• To be able to work with different network tools.

Assessment Details (both CIE and SEE)

The weightage of Continuous Internal Evaluation (CIE) is 50% and for Semester End Exam (SEE) is 50%.

The minimum passing mark for the CIE is 50% of the maximum marks. A student shall be deemed to have satisfied the academic requirements and earned the credits allotted to each course.

The student has to secure not less than 40%of maximum marks in the semester-end examination(SEE). In total of CIE and SEE student has to secure 50% maximum marks of the course.

Continuous Internal Evaluation (CIE):

CIE marks for the practical course is 50 Marks. The split-up of CIE marks for record/ journal and test are in the ratio 60:40.

• Each experiment to be evaluated for conduction with observation sheet and record writeup. Rubrics for the evaluation of the journal/write-up for hardware/software experiments designed by the faculty who is handling the laboratory session and is made known to students at the beginning of the practical session.
• Record should contain all the specified experiments in the syllabus and each experiment write-up will be evaluated for 10 marks.
• Total marks scored by the students are scaled downed to 30 marks (60% of maximum marks).
• Weightage to be given for neatness and submission of record/write-up on time.
• Department shall conduct 02 tests for 100 marks, the first test shall be conducted after the 8th week of the semester and the second test shall be conducted after the 14th week of the semester.
• In each test, test write-up, conduction of experiment, acceptable result, and procedural knowledge will carry a weightage of 60% and the rest 40% for viva-voce.
• The suitable rubrics can be designed to evaluate each student’s performance and learning ability.
• The average of 02 tests is scaled down to 20 marks (40% of the maximum marks).

The Sum of scaled-down marks scored in the report write-up/journal and average marks of two tests is the total CIE marks scored by the student.

Semester End Evaluation (SEE):

• SEE marks for the practical course is 50 Marks.
• SEE shall be conducted jointly by the two examiners of the same institute, examiners are appointed by the University.
• All laboratory experiments are to be included for practical examination. (Rubrics) Breakup of marks and the instructions printed on the cover page of the answer script to be strictly adhered to by the examiners. OR based on the course requirement evaluation rubrics shall be decided jointly by examiners.
• Students can pick one question (experiment) from the questions lot prepared by the internal /external examiners jointly. Evaluation of test write-up/ conduction procedure and result/viva will be conducted jointly by examiners. General rubrics suggested for SEE are mentioned here, writeup-20%, Conduction procedure and result in -60%, Viva-voce 20% of maximum marks. SEE for practical shall be evaluated for 100 marks and scored marks shall be scaled down to 50 marks (however, based on course type, rubrics shall be decided by the examiners) Change of experiment is allowed only once and 10% Marks allotted to the procedure part to be made zero.
• The duration of SEE is 03 hours