UNIT: V HIGH CAPACITY NETWORKS 16 marks

UNIT: V HIGH CAPACITY NETWORKS

Part B (16 marks for each question)

1. Give the advantages and disadvantages of WDM over TDM.               (16)
2. Explain the SDM and TDM approached in upgrading transmission capacity.  (16)
3. Explain the following application areas
1. Inter-exchange networks                            (8)
2. Local-exchange networks                             (8)
4. Explain the following application areas in detail,
1. Undersea networks                                (8)
2. Enterprise links                                    (8)
5. Explain OTDM in detail.                                   (16)
6. Explain in detail Nonlinear optical loop mirror (NOLM).                   (16)
7. Explain packet interleaving in detail.                           (16)
8. Explain the functions of a synchronizer with tunable delays in detail.           (16)
9. Explain in detail the functions of a routing node in a switch-based network.       (16)
10. Explain deflection routing in a switch-based network.                   (16)

UNIT: IV WAVELENGTH ROUTING NETWORKS

UNIT: IV WAVELENGTH  ROUTING NETWORKS

Part B (16 marks for each question)

1. Explain in detail the static and reconfigurable wavelength routing

networks.                                        (16)

2. Explain in detail ‘degree of wavelength conversion’ in node design.        (16)
3. Explain the following with respect to node design,

                                          i)  Multi-fiber networks                    (8)

  ii)  Degree of transparency                 (8)

4. Explain realization with regard to node design.                    (16)
5. Explain traffic models and performance criteria in network design

and operation.                                    (16)

6. Explain routing and wavelength assignment in detail.                (16)
7. Explain in detail NTT ring testbed.                        (16)
8. Explain in detail the MWTN reconfigurable wavelength routing testbed.    (16)
9. Explain the AON testbed in detail.                            (16)
10. Explain in detail Alcatel’s WDM ring network.                    (16)

UNIT:III BROADCAST AND SELECT NETWORKS

UNIT:III BROADCAST AND SELECT NETWORKS

Part B (16 marks for each question)

1. Briefly explain about the topologies for broadcast networks.        (16)
2. Explain in detail the Slotted Aloha/Slotted Aloha protocol.        (16)
3. Explain Synchronization of MAC protocols in detail.            (16)
4. Explain the operation of DT-WDMA in detail.                (16)
5. Explain in detail the Scheduling protocols of DT-WDMA.        (16)
6. Explain the following, i) Scheduling deterministic traffic         (8)

 ii) Scalability and traffic classes.            (8)

7. Explain the following, i) STARNET                    (8)

                                         ii) BBC TV studio.                (8)

8. Explain lightning testbed in detail.                        (16)
9. Explain in detail single-hop and multi-hop networks.            (16)
10. Explain about shufflenet multi-hop network.                (16)

UNIT: II SONET AND SDH NETWORKS

UNIT: II SONET AND SDH NETWORKS

Part B (16 marks for each question)

1. Explain in detail the architecture of a SONET system.                (16)
2. Explain in detail the functional layers of a SONET along with device-layer     (16)

relationship.

3. Explain in detail frame, byte, bit transmission and encapsulation

in  SONET.                                        (16)

4. Explain in detail the STS-1 frame format in a SONET.                (16)
5. Explain STS multiplexing in detail.                        (16)
6. Explain in detail the linear SONET network along with automatic protection

switching.                                        (16)

7. Explain in detail the SONET ring network.                    (16)
8. Explain in detail about the mesh SONET network and a

cross-connect switch.                                (16)

9. Explain in detail integration of TDM signals in SONET.                (16)
10. Explain SONET physical layer in detail.                        (16)

UNIT: I OPTICAL NETWORKING COMPONENTS

UNIT: I OPTICAL NETWORKING COMPONENTS

Part B (16 marks for each question)

1. Draw the structure and explain the operation of directional couplers.       (16)
2. Explain the operation of isolators with diagrams.                           (16)
3. a). Explain the operation of multiplexers in detail.                                       (8)

b). Draw the structure of Fabry-Perot filter and explain its operation.         (8)

    4.   Write in detail about multilayer dielectric thin film filter.                             (16)

    5.   Explain in detail the Mach-Zehnder Interferometer with diagrams.           (16)

    6.   Write in detail about arrayed waveguide gratings.                     (16)

    7.   Explain Acousto Optic Tunable filter in detail.                            (16)

    8.   Write in detail the operation of EDFA.                                  (16)

    9.   Explain the various switch architectures in detail.                   (16)

   10.  Elaborate the various optical switch technologies.                   (16)

   11.  With diagrams explain the various wavelength conversion techniques.   (16)