Wireless Network (EC-803 (A)) - Important Questions

Explain the advancement and migration from GSM to UMTS in terms of data rates, coverage and services.

Explain the protocol architecture of IEEE 802.11 WLAN, including the Physical (PHY) layer and MAC layer / MAC management

Define cellular networks and explain the evolution of mobile telephony from 1G to modern wireless technologies.

Evaluate the role of WLAN and WiMAX technologies in next-generation mobile communication systems.

Explain Wireless ATM networks, their architecture, operation for high-speed wireless transmission, and research challenges

Differences between fixed and mobile IEEE 802.16 and key enhancements to support mobility

Discuss the key functions performed by the MAC layer in IEEE 802.11 WLANs

Explain the Universal Mobile Telecommunication System (UMTS) in detail with its basic block diagram.

Write short notes on WiMAX, Zigbee, IEEE 802.15 WPAN, and GAGAN

Explain the key features and advantages of HIPERLAN compared to IEEE 802.11 standards

Explain the differences between WLAN and MAC layer with suitable examples

Describe the E-UTRAN architecture and its components, roles in wireless communication, mobility management and resource allocation in LTE.

Differentiate between SISO and MIMO systems and discuss advantages of MIMO over SISO in terms of reliability, coverage and data rate.

Define LTE systems and explain LTE uplink and downlink communication with suitable architecture.

Compare HSDPA and HSUPA technologies with suitable examples.

Describe the UTRAN architecture and discuss its significance in mobile communication systems.

Evaluate modern wireless transmission techniques such as OFDM, OFDMA and MIMO in mobile communication systems.

Introduce 3GPP and explain its role in setting LTE and LTE-A standards, including key objectives, principles and practical applications.

Write a short note on Mobility Management (as choice among Mobility Management, Security in WSN, 3GPP, Wireless ATM).

Explain the key components of UMTS network architecture and how they interact to provide mobile services.

Explain how OFDM-MIMO addresses channel variability and inter-symbol interference in wireless environments.

Explain the OFDM transmitter and receiver with neat block diagram.

Define Multi-Input Multi-Output (MIMO) system and explain with suitable diagram.

Discuss security issues and challenges in Wireless Sensor Networks (WSN) and techniques for data confidentiality, integrity and authenticity.

Describe what a Wireless Sensor Network is and explain its characteristics and importance in modern communication systems.

Evaluate modern routing, MAC and transport protocols used in WSN systems.

What is topology management in WSNs and why is it essential for network efficiency and robustness?

Describe the architecture of an Underwater Wireless Sensor Network and its main applications and use cases.

Explain the advantages and limitations of proactive (table-driven) vs reactive (on-demand) routing protocols in WSNs.

Draw and explain the architecture of a Wireless Sensor Network with suitable diagram, including coverage and placement needs.

Define Wireless Sensor Network, compare it with traditional wired networks, and explain its architecture.

Discuss the challenges for Underwater Wireless Sensor Networks (UWSNs).

What are the different types of applications of wireless sensor networks?

Classify and explain the different technologies used for sensor nodes and their network.

Compare and describe IPv4 versus IPv6 protocols / addressing and architecture, including variants with TCP versus UDP comparison and calculation of successfully delivered packets from packet loss rate

Explain the medium access problems in wireless networks and their impact on communication performance.

Explain data forwarding and route optimizations in Mobile IP when a mobile node is away from its home network communicating with a correspondent / another mobile node

Explain and compare TCP variants for mobile/wireless networks: Indirect TCP, Tahoe, Reno, New-Reno and Vegas

Explain the exposed terminal problem in wireless medium access and techniques to mitigate its effects.

Explain how Mobile TCP adapts to wireless and mobile network challenges such as high packet loss, variable latency and frequent handovers

Explain how routing algorithms determine the most efficient path, mitigate congestion, and ensure timely packet delivery in wireless environments.

Write a short note on any two of: CSMA/CD, OFDM-MIMO, underwater WSN, IEEE 802.15 WPAN.

Explain Traditional TCP and its significance

What do you mean by congestion window management? Explain its practical consequences.

What is the GAGAN system and what is its purpose/role in navigation and geolocation services?

Describe / discuss / draw and explain the architecture of IoT with its key components, with neat sketch/diagram.

Define Internet of Things (IoT) and analyze the role of IoT and GPS technologies in next-generation smart communication systems.

Develop a secure IoT communication model using ZigBee and Bluetooth technologies.

Compare and contrast Bluetooth piconet and scatternet in terms of topology, scalability, coverage area, and device interaction.

Explain and compare the interface between IEEE 802.11 and Bluetooth.

Write a case study on the implementation of a Sensor Body Area Network (BAN).

Elaborate the main design principles and needed capabilities of IoT structure.

Explain some of the emerging IoT standards helpful for networking engineer.

Give a brief introduction on Wireless networks. Discuss about the characteristics of Wireless medium.

Explain the effect of Multipath and Doppler in wireless network.