Wireless and Mobile Computing (IT-602) - Important Questions

Explain the architecture and working of a cellular communication system with a suitable diagram, including why it is called cellular and the concept of handoff.

Define the terms handoff, sectorization, and power control

With the help of suitable diagrams explain Ground wave, sky wave and LOS propagation models of wave propagation.

What do you mean by multiple access techniques? Discuss DAMA and PRMA techniques of Multiple access.

Write about hidden and exposed terminal problem of wireless channel access.

What is an Antenna? Draw and explain any two types of antennas.

Explain the need for multiple access techniques and compare SDMA, TDMA, FDMA and DAMA.

Discuss the various effects of mobile radio propagation.

Explain how priority based multiple access schemes can be implemented?

With neat sketch, explain the operation of helical antenna.

With the help of a neat diagram, explain the reference model of wireless and mobile networks.

Explain the architecture of GPRS in detail.

Explain the wireless network protocols DECT, TETRA, UMTS (and DHCP)

Draw and explain the architectures of GPRS and GSM systems and give a comparison of both.

Discuss the different types of mobile services provided by GSM? Explain each in brief.

Describe the handover and services available in GSM.

Explain Bluetooth network with notes on its physical and MAC layers.

Explain HIPERLAN protocol and its four versions/types with neat sketches

Why do we need wireless LAN explain architecture of 802.11 LAN?

Discuss the physical layer and access control sublayer of HIPERLAN.

What are the principle responsibilities of MAC protocol?

Which waves are used in wireless LAN communication and why?

Explain the three channel access mechanisms in HIPERLAN-1.

Compare the classical approaches for mobile TCP (Indirect TCP, Snooping TCP and Mobile TCP) with their relative advantages and disadvantages.

Explain the architecture of wireless sensor networks and discuss their applications.

What is an Ad Hoc network? Write characteristics, performance issues and applications of Ad hoc networks.

Write short notes on Mobile IP, TETRA, and Intruders.

What is DHCP and how does it support dynamic address allocation?

Write short notes on Dynamic Host Configuration Protocol (DHCP) and MAC layer.

Explain about dynamic source routing protocol.

Explain the header fields of IP-in-IP, Minimal Encapsulation, and Generic Routing Encapsulation (GRE) used in Mobile IP.

Explain what a firewall is and discuss firewall design principles and design issues.

Explain the different methods of password management.

Write short notes on any two of the following:

Explain the different challenges of password management.