ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD
(Department of Computer Science)
WARNING
1.
2.
PLAGIARISM OR HIRING OF GHOST WRITER(S) FOR SOLVING
THE ASSIGNMENT(S) WILL DEBAR THE STUDENT FROM AWARD
OF DEGREE/CERTIFICATE, IF FOUND AT ANY STAGE.
SUBMITTING ASSIGNMENT(S) BORROWED OR STOLEN FROM
OTHER(S) AS ONE’S OWN WILL BE PENALIZED AS DEFINED IN
“AIOU PLAGIARISM POLICY”.
Course: Data Communication and Network (3584/3429)
Level: Post Graduate
Semester: Autumn, 2015
Total Marks: 100
Pass Marks: 50
ASSIGNMENT No. 1
Note: Attempt all question. All questions carry equal marks.
Q. 1 (a)
(b)
What do you mean by communication signal? Elaborate the types of signal.
Define communication model. Also explain the various components of
communication model.
(20)
Q. 2 What is modulation? Describe the various types of modulation with the help of
examples.
(20)
Q. 3 What is network topology? Elaborate different types of topologies used in
designing the layout of network.
(20)
Q. 4 Write a detail note on the characteristics of Guided & Un-Guided transmission
Medias.
(20)
Q. 5 (a)
(b)
Compare the asynchronous and synchronous transmission techniques and
elaborate the usefulness of each with respect to reliability of data
transmission.
What is an interface? What is the importance?
(20)
1
ASSIGNMENT No. 2
Total Marks: 100
Pass Marks: 50
Note: All questions carry equal marks.
Q. 1 How can you define the term multiplexing with respect to communication system?
Also give detail of its various types.
(20)
Q. 2 What is the purpose of flow control? Elaborate the various types of techniques used
for flow control.
Q. 3 (a)
(20)
Describe the importance and characteristics of Ethernet and Fast Ethernet
with respect to data transmission, delay, attenuation, and cost.
(b)
Suppose you are hired as network engineering in an organization and you are
given the task to device the network structure off the organization. State you
strategy in detail.
(20)
Q. 4 Write a detailed note on Flow control and Error control in detail.
(20)
Q. 5 Compare and contrast the following with examples:
(20)
(a)
Bridge and router
(b)
Direct cable and cross over cable
(c)
Circuit Switching and Packet Switching
(d)
DTE and DCE
2
ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD
(Department of Computer Science)
Course Code:
Course Title:
Credit Hours:
Session Offered:
Recommended Book:
Audio/Video/
Multimedia CD:
Reference Book:
Pre-Requisite:
Course Coordinator:
Teaching Methodology:
Computer Usage:
3584 (Old 3429)
Data Communication and Networks
4 (4, 0) 4 Hours lectures and no Lab work
Please see the offering schedule
Data and Computer Communication by William Stallings
Yes
Data Communications and Networking
by Behrouz A Forouzan (Aug 13, 2003)
Data Communications and Networking (McGraw-Hill Forouzan
Networking) By Behrouz A Forouzan (Feb 9, 2006)
None
Mohammad Tariq Abbasi, Lecturer, Department of
Computer Science, dcs@aiou.edu.pk
Online
Use of Internet for exploring Communication of Data in
Networks
Instruction:
This course covers; Data Transmission, Networking Concepts, Transmission
Impairments, Attenuation, Delay Distortion, Noise, Channel Capacity, Transmission
Media, Data Communication Interface, Data Link Control, Connectivity Devices and
Connection Services, Disaster Recovery, and Network Adapter Cards.
Course Objectives:
At the end of the course the students are expected to:
1.
Familiar with Transmission of Data in LAN
2.
Demonstrate the concept of Networking
3.
Comprehend Transmission Media and their usage
4.
Develop the communication between Server and Terminals
5.
Implement the Multiplexing Techniques
6.
Familiar with the concept of Data Encoding Techniques
7.
Know Data Recovery/Protection Techniques
Evaluation Criteria:
i)
Assignment
ii)
Mid Term Theory/Practical Examination
iii) Final Examination
3
10%
20%
70%
Course Outlines:
Unit–l Data Communication Concepts
Communication Model, Communication Tasks, Types of Signal and Data,
Bandwidth and Channel Capacity, Point to Point and Multi Point Link, Simplex,
Half Duplex, and Full Duplex Transmission, Modulation, Demodulation.
Unit–2 Computer Networking Concepts
LAN, WAN, MAN, Logical & Physical Topology of Network, LAN Topologies
(Bus, Tree, Star, Ring), Network Application and Services, Network Models
Unit–3 Protocols, OSI Reference Model and TCP/IP Protocol Suite
Protocols and its components, OSI Reference Model, TCP/IP Suit
Unit–4 Transmission Impairments and Transmission Media
Transmission Impairments (Attenuation, Delay Disaster, Noise), Guided Media
(Twisted Pair, Coaxial Cable, Optic Fiber), Unguided Media (Wireless
Transmission & Satellite)
Unit–5 Data Communication Interface and Multiplexing
A system and system transmission, Inter facing of DTE & DCE, Frequency
division multiplexing, Time division multiplexing
Unit–6 Data Link Control
Flow Control (Stop & Wait Flow Control, Sliding Window Flow Control), Error
Control (Error Detection, Parity Technique, CRC Technique, Error Correction
(Stop & Wait ARQ)
Unit–7 LAN Technologies and Systems
LAN Architecture, Ethernet and FAST Ethernet LANS (CSMA/CD), Token
Ring Network, FDDI, High Speed Ethernet (Gigabit LANS)
Unit–8 Disaster Recovery and System Configuration
Disaster Recovery (Data Protection Techniques, System Failures Protection
Techniques), System Configuration (Installing and Configuring Network devices
(Modern and NIC), Network Configuration and Administration)
Unit–9 Inter Network Devices and WAN Services
Bridges, Routing, Circuit Switching Network, Packet Switching Network, ISDN
Links, ATM and Frame Relay
4
Activities/Practicals:
1.
2.
3.
4.
Differentiate between OSI and ISO. Also explain any five duties/services of
Transport Layers. Assume a data stream is mode of ten 0s, Encode this stream
using the following encoding schemes. How many changes (vertical line) can you
find for each scheme. Plolar NRZ-1, NRZ1, AM1, Manchester
What is the sampling rate for PCM if the frequency ranges from 100 Hz to 400 Hz?
Consider the transmission system using Frequency Division Multiplexing. What
cost factors are involved in adding one more pair of stations to the systems?
Draw a network structure established in your study centre, define and explain all
the nodes, medium, software’s and hubs. Suggest a best solution for the problems
identified by your analysis, discuss with your teacher as well.
Computer usage: Use of Internet for exploring Communication of Data in Networks
Prepared by:
Mohammad Tariq Abbasi, Lecturer, Department of Computer Science
Last Revised:
Spring 2006
=========
5