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									        ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD
                          (Department of Computer Science)
Course: Data Communication and Network (3584/3429)              Semester: Autumn, 2010
Level: Post Graduate                                                  Total Marks: 100
                                                                        Pass Marks: 50

                                      WARNING
1.      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.
2.      SUBMITTING ASSIGNMENTS BORROWED OR STOLEN FROM
        OTHER(S) AS ONE’S OWN WILL BE PENALIZED AS DEFINED IN
        “AIOU PLAGIARISM POLICY”.

                               ASSIGNMENT No. 1
Note: Attempt all question. All questions carry equal marks.
Q. 1     What do you mean by communication signal? Elaborate the types of signal. (10)

Q. 2     Define communication model. Also explain the various components of
         communication model.                                           (10)

Q. 3     What is modulation? Describe the various types of modulation with the help of
         examples.                                                                (10)

Q. 4     What is network topology? Elaborate different types of topologies used in
         designing the layout of network.                                     (10)

Q. 5     What do you know about the management of a network system? Explain the
         various application and services provided by network system.      (10)

Q. 6     What is protocol? Define the OSI stack model in detail.                  (10)

Q. 7     Differentiate between 7 layers model and that of TCP/IP suite.           (10)

Q. 8     What do you know about the transmission system? Also explain the different
         types of impairments occurred in the communication system.            (10)

Q. 9     What is media? Explain the guided and unguided media in detail.          (10)

Q. 10    Explain the term interface. What the role of data terminal equipment and data
         terminal communication equipment in the communication system?            (10)
                              ASSIGNMENT No. 2
Total Marks: 100                                                           Pass Marks: 50

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.                    (10)

Q. 2    What is the purpose of flow control? Elaborate the various types of techniques
        used for flow control.                                                    (10)

Q. 3    How can we maintain the communication system accuracy regarding data
        transmission? Explain the various types of technologies used for error control. (10)

Q. 4    Describe the importance and characteristics of Ethernet and Fast Ethernet with
        respect to data transmission, delay, attenuation, and cost.               (10)

Q. 5    Suppose you are hired as network engineering in an organization and you are
        given the task to device the network structure of the organization. State you
        strategy in detail.                                                       (10)

Q. 6    What do you mean by network disaster? What techniques are used for recovery?
        Elaborate.                                                              (10)

Q. 7    Differentiate between FDDI and High Speed Ethernet with respect to data
        transmission, disaster recovery, and budget.                       (10)

Q. 8    How important are the communication media? Describe the purpose of direct and
        cross over cable.                                                        (10)

Q. 9    Define ISDN. Elaborate the characteristics of ISDN with respect to data
        transmission in communication system.                              (10)

Q. 10   What is difference between ATM and Frame Relay? Also describe it importance
        with in the data communication.                                        (10)




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                    COURSE OUTLINES
          Data Communication & Network 3584 (old 3429)
Recommended Books:
(1)   Data and Computer Communication by William Stallings 5th Edition
(2)   Computer Networks by Tanenebaum 3rd Edition

Unit–1: 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
        (a) LAN, WAN, MAN
        (b) Logical & Physical Topology of Network
        (c) LAN Topologies (Bus, Tree, Star, Ring)
        (d) Network Application and Services
        (e) Network Models

Unit–3: Protocols, OSI Reference Model and TCP/IP Protocol Suite
        (a) Protocols and its components
        (b) OSI Reference Model
        (c) TCP/IP Suit

Unit–4: Transmission Impairments and Transmission Media
        (a) Transmission Impairments (Attenuation, Delay Disaster, Noise)
        (b) Guided Media (Twisted Pair, Coaxial Cable, Optic Fiber)
        (c) Unguided Media (Wireless Transmission & Satellite)
        (d) Practical *

Unit–5: Data Communication Interface and Multiplexing
        (a) A system and System Transmission
        (b) Inter facing of DTE & DCE
        (c) Frequency division multiplexing
        (d) Time division multiplexing

Unit–6: Data Link Control
        (a) Flow Control (Stop & Wait Flow Control, Sliding Window Flow
             Control)
        (b) Error Control (Error Detection, Parity Technique, CRC Technique, Error
             Correction (Stop & Wait ARQ))

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Unit–7: LAN Technologies and Systems
        (a) LAN Architecture
        (b) Ethernet and FAST Ethernet LANS (CSMA/CD)
        (c) Token Ring Network
        (d) FDDI
        (e) High Speed Ethernet (Gigabit LANS)

Unit–8: Disaster Recovery and System Configuration
        (a) Disaster Recovery (Data Protection Techniques, system Failures
              protection Techniques)
        (b) System Configuration (Installing and Configuring Network Devices
              (Modern and NIC), Network Configuration and Administration)
        (c) Practical **

Unit–9: Inter Network Devices and WAN Services
        (a) Bridges
        (b) Routing
        (c) Circuit Switching Network
        (d) Packet Switching Network
        (e) ISDN Links
        (f) ATM and Frame Relay

*       The institution should arrange the following to make and test UTP Cable
        from the students used in star topology
        (a) Direct Cable
        (b) Cross over Cable
**      The Institution should arrange the following labs:
        (a) Install network OS and configuration of network devices.
        (b) Managing user accounts and user rights.




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