MCS-218 Solved Assignment 2026-27 in English | MCA
The MCS-218 Solved Assignment 2026-27 in English is prepared for students studying MCS-218: Data Communication and Computer Networks under the IGNOU Master of Computer Applications programme.
IGNOU identifies MCS-218 as a 4-credit theory course in Semester II. The course covers fundamental data communication and computer networking concepts along with modern networking technologies and network security. Topics include wireless networks, Bluetooth and Zigbee, cellular networks, Mobile IP, IPv6, IoT, network-layer security, VPN, SSL, WLAN security, cyber threats, firewalls and intrusion detection systems.
The supplied MCS-218 Solved Assignment 2026-27 contains nine questions covering network topologies, bandwidth, modulation techniques, amplitude levels, switching, retransmission strategies, IEEE 802.11 fragmentation, Ethernet backoff, shortest-path routing, spanning-tree flooding and DES.
MCS-218 Data Communication and Computer Networks Course Information
| Particular | Details |
|---|---|
| Course Code | MCS-218 |
| Course Title | Data Communication and Computer Networks |
| Programme | Master of Computer Applications |
| Programme Codes | MCA_NEW, MCAOL |
| Course Type | Theory |
| Credits | 4 |
| Semester | II |
| Medium | English |
| Session | 2026–27 |
| Assignment Marks | 100 |
| Assignment Weightage | 30% |
IGNOU’s official MCA programme information confirms MCS-218 as a 4-credit Semester II theory course.
MCS-218 Solved Assignment 2026-27 Overview
The MCS-218 Solved Assignment 2026-27 in English covers important concepts from Data Communication and Computer Networks through nine questions.
The first question covers Bus, Star, Ring and Mesh network topologies, including their advantages and disadvantages.
The second question requires calculation of the bandwidth of a communication channel ranging from 2000 Hz to 7000 Hz.
The third question compares Frequency Modulation, Pulse Code Modulation, Frequency Shift Keying and Pulse Amplitude Modulation.
The fourth question deals with calculating the maximum number of distinguishable amplitude levels for a digital communication system.
Questions 5 and 6 cover switching techniques, piggybacking and pipelining, while Questions 7–9 cover wireless networking, Ethernet, routing, flooding and network security.
MCS-218 Assignment Questions
Course Code: MCS-218
Course Title: Data Communication and Computer Networks
Question 1 — Network Topologies
Explain the network topologies, with advantages and disadvantages:
(a) Bus
Explain the structure, working, advantages and disadvantages of Bus topology.
(b) Star
Explain Star topology along with its advantages and disadvantages.
(c) Ring
Explain Ring topology along with its advantages and disadvantages.
(d) Mesh
Explain Mesh topology along with its advantages and disadvantages.
The supplied solved material explains network topology as the physical or logical arrangement of network devices and communication links and discusses Bus, Star, Ring and Mesh configurations.
Question 2 — Channel Bandwidth
A communication channel has a bandwidth ranging from 2000 Hz to 7000 Hz.
Calculate the bandwidth of the channel.
The solved answer calculates:
Bandwidth = Highest Frequency − Lowest Frequency
= 7000 − 2000
= 5000 Hz = 5 kHz
Question 3 — Modulation Techniques
Explain the differences between the following modulation techniques:
(a) Frequency Modulation
(b) Pulse Code Modulation
(c) Frequency Shift Keying
(d) Pulse Amplitude Modulation
The solved material explains the different signal parameters involved in FM, PCM, FSK and PAM and provides a comparative explanation of their signal types and applications.
Question 4 — Digital Signal Amplitude Levels
A digital communication system uses signal amplitudes ranging from −5 V to +7 V. The receiver can reliably distinguish two signal levels only if they differ by at least 0.6 V.
Assuming the effect of noise is within the permissible limit, determine the maximum number of amplitude levels that can be used.
The solved material works through the available voltage range and minimum distinguishable difference to determine the maximum number of usable signal levels.
Question 5 — Switching in Communication Networks
(a)
What is the significance of switching in communication networks?
(b)
Highlight the working of the following switching techniques:
- Circuit Switching
- Multistage Switching
- Packet Switching
The solved material explains that switching allows communication resources to be shared efficiently between multiple users. It then explains the operation of circuit switching, multistage switching and packet switching.
Question 6 — Retransmission Strategies
Explain the following terms in the context of retransmission strategies:
(a) Piggybacking
(b) Pipelining
Include diagrams, wherever necessary.
The supplied solution explains that piggybacking attaches an acknowledgement to an outgoing data frame, reducing separate ACK transmissions, while pipelining permits multiple frames to remain in transit before individual acknowledgements are received.
Question 7 — IEEE 802.11 and Ethernet
(a)
What is a fragment burst in 802.11? Illustrate the steps with diagram.
(b)
Explain the binary exponential backoff algorithm for Ethernet.
The solved material explains 802.11 frame fragmentation and the sequential transmission of fragments, followed by acknowledgements. It also explains Ethernet’s binary exponential backoff mechanism for handling collisions.
Question 8 — Routing and Flooding
(a)
Consider the network shown in Figure 1, where each communication link has a transmission cost.
Using Dijkstra’s shortest path routing algorithm, determine the shortest path from router R1 to router R7 and calculate the total path cost.
(b)
Using the network diagram in Figure 1:
- Construct a spanning tree with R1 as the root.
- Show the sequence of packet forwarding during flooding.
- Compare the number of packet transmissions in flooding with and without the spanning tree.
- Make any further assumptions if required.
The supplied solution identifies two equal-cost shortest paths:
R1 → R2 → R5 → R7
and
R1 → R3 → R6 → R7
with a minimum total cost of 3.
It also constructs a spanning tree and compares packet transmissions during flooding.
Question 9 — Data Encryption Standard
Explain the Data Encryption Standard with architecture and algorithm, in the context of network security in data communication.
The solved material explains DES as a symmetric-key block encryption technique and covers its architecture, 64-bit plaintext block, effective 56-bit key, initial permutation, 16 Feistel rounds, subkeys, S-boxes and final permutation.
What Does This MCS-218 Solved Assignment PDF Include?
The MCS-218 Solved Assignment 2026-27 in English includes structured reference material covering:
- Network topologies
- Bus topology
- Star topology
- Ring topology
- Mesh topology
- Channel bandwidth
- Frequency Modulation
- Pulse Code Modulation
- Frequency Shift Keying
- Pulse Amplitude Modulation
- Digital signal amplitude levels
- Circuit switching
- Multistage switching
- Packet switching
- Piggybacking
- Pipelining
- Retransmission strategies
- IEEE 802.11 fragmentation
- Fragment bursts
- Ethernet
- Binary exponential backoff
- Dijkstra’s shortest path algorithm
- Shortest-path routing
- Spanning trees
- Flooding
- Packet transmission comparison
- Data Encryption Standard
- DES architecture
- DES algorithm
- Network security
The supplied PDF contains the complete 2026–27 solved assignment, including the original assignment questions and their corresponding reference answers.
Key Features
- MCS-218 course-specific content
- 2026–27 session
- English Medium
- MCA programme
- MCA_NEW and MCAOL applicable categories
- Complete 9-question assignment coverage
- Networking concepts
- Numerical problems
- Modulation techniques
- Switching techniques
- Retransmission strategies
- Ethernet and 802.11 concepts
- Dijkstra routing
- Flooding and spanning trees
- Network security
- DES
- Digital PDF format
- Instant Download
- Mobile and desktop friendly
Who Can Use the MCS-218 Assignment?
This product is intended for students enrolled in the applicable IGNOU MCA programmes who are preparing MCS-218 for the 2026–27 assignment cycle.
IGNOU’s current assignment listing shows MCS-218 under MCA_NEW and MCAOL, with July 2026 and January 2027 sessions.
IGNOU’s official MCA programme information identifies MCS-218 as Data Communication and Computer Networks, a 4-credit Semester II theory course.
How to Get This MCS-218 PDF
Step 1: Add the Product
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Step 2: Complete Payment
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Step 3: Get Instant Access
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Step 4: Download the PDF
Download the MCS-218 PDF and save it on your mobile, tablet or computer.
Step 5: Prepare Your Assignment
Read each question carefully and use the solved material as academic reference while preparing your assignment according to IGNOU guidelines.
Helpful Resources
Official IGNOU Assignment Portal:
IGNOU Current Assignments
IGNOU MCA Programme:
IGNOU MCA Programme
Mother Publication:
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FAQ
1. What is MCS-218?
MCS-218 is Data Communication and Computer Networks, a 4-credit theory course in Semester II of the MCA programme.
2. Which programmes are applicable for MCS-218?
The current IGNOU assignment listing shows MCA_NEW and MCAOL for MCS-218.
3. What is the course title of MCS-218?
The course title is Data Communication and Computer Networks.
4. What is the medium of this MCS-218 assignment?
This product is for English Medium students.
5. Which session does this product cover?
This product covers the 2026–27 assignment cycle.
6. How many questions are included?
The supplied assignment contains nine questions, covering 80 marks, with 20 marks allocated for viva voce.
7. Does MCS-218 include numerical questions?
Yes. The assignment includes numerical questions on channel bandwidth and digital signal amplitude levels.
8. Does MCS-218 cover network topologies?
Yes. Question 1 covers Bus, Star, Ring and Mesh topologies.
9. Does MCS-218 cover routing algorithms?
Yes. Question 8 requires the use of Dijkstra’s shortest path routing algorithm and also covers spanning-tree-based flooding.
10. Does MCS-218 cover network security?
Yes. Question 9 specifically asks about the Data Encryption Standard (DES), including its architecture and algorithm.
Disclaimer
Mother Publication independently prepares this material for educational and reference purposes. Students should understand the content and prepare their assignments appropriately. Mother Publication is not affiliated with, endorsed by, or officially associated with IGNOU.
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