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    1.define MANET.: 2. List The Advantages of MANET. Independence

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    Mustafa Troy Troy
    MANET is an infrastructure-less network of mobile devices connected without wires that is self-configuring. It has advantages like independence from central administration, flexibility, and ease of deployment but also limitations such as limited wireless range, frequent route changes, and battery power constraints. Each node in a MANET functions as a router, forwarding packets to the next hop to ensure the packet moves towards its destination with minimum hops, delay, and packet loss through the path without loops. Reactive protocols discover new routes on demand when needed using flooding, while proactive protocols maintain up-to-date routing tables through frequent updates as the network topology changes.

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    1.define MANET.: 2. List The Advantages of MANET. Independence

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    Mustafa Troy Troy
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    MANET is an infrastructure-less network of mobile devices connected without wires that is self-configuring. It has advantages like independence from central administration, flexibility, and ease of deployment but also limitations such as limited wireless range, frequent route changes, and battery power constraints. Each node in a MANET functions as a router, forwarding packets to the next hop to ensure the packet moves towards its destination with minimum hops, delay, and packet loss through the path without loops. Reactive protocols discover new routes on demand when needed using flooding, while proactive protocols maintain up-to-date routing tables through frequent updates as the network topology changes.

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    QB104624.pdf

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    MANET is an infrastructure-less network of mobile devices connected without wires that is self-configuring. It has advantages like independence from central administration, flexibility, and ease of deployment but also limitations such as limited wireless range, frequent route changes, and battery power constraints. Each node in a MANET functions as a router, forwarding packets to the next hop to ensure the packet moves towards its destination with minimum hops, delay, and packet loss through the path without loops. Reactive protocols discover new routes on demand when needed using flooding, while proactive protocols maintain up-to-date routing tables through frequent updates as the network topology changes.

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    57 views4 pages

    1.define MANET.: 2. List The Advantages of MANET. Independence

    Uploaded by

    Mustafa Troy Troy
    MANET is an infrastructure-less network of mobile devices connected without wires that is self-configuring. It has advantages like independence from central administration, flexibility, and ease of deployment but also limitations such as limited wireless range, frequent route changes, and battery power constraints. Each node in a MANET functions as a router, forwarding packets to the next hop to ensure the packet moves towards its destination with minimum hops, delay, and packet loss through the path without loops. Reactive protocols discover new routes on demand when needed using flooding, while proactive protocols maintain up-to-date routing tables through frequent updates as the network topology changes.

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    of 4

    Sri Vidya College of Engineering & Technology, Virudhunagar Course Material (Question Bank)

    UNIT-IV

    1.Define MANET.
    • MANET - Mobile Adhoc NETworks
    . Continuously self-configuring, infrastructure-less network of mobile devices connected
    without wires

    2. List the advantages of MANET. Independence


    from central network administration
    • Self-configuring, nodes are also routers
    • Self-healing through continuous re-configuration
    • Scalable-accommodates the addition of more nodes
    • Flexible-similar to being able to access 'the Internet from many different locations
    • Ease of deployment
    • Speed of deployment
    • Decreased dependence on infrastructure
    . Reduced administrative cost
    • Supports anytime and anywhere computing

    3. What are the limitations of MANET?


    •Each node must have full performance
    •Throughput is affected by system loading
    •Reliability requires a sufficient number of available nodes
    •Large networks can have excessive latency (time delay), which affects some applications
    •Limited wireless range •Hidden terminals
    •Packet losses due to transmission errors •Routes changes
    •Devices heterogeneity •Battery power
    constraints
    •Link changes are happening quite often •Routing loop
    may exist

    IT6601 Mobile Computing Unit -IV Page 1


    STUDENTSFOCUS.COM
    Sri Vidya College of Engineering & Technology, Virudhunagar Course Material (Question Bank)

    4. Difference between cellular and Ad-Hoc Networks

    CELLULAR Ad-Hoc NETWORKS


    Infrastructure Networks Infrastructureless Networks
    Fixed, pre-located cell sites and base
    No base station, and rapid deployment
    stations
    Static backbone network topology Highly dynamic network topologies
    Relatively caring environment and Hostile environment and irregular
    stable connectivity connectivity
    Detailed planning before base station Ad-Hoc network automatically forms
    can be installed and adapts to changes
    High setup costs Cost-effective
    Large setup time Less setup time

    5. What are the functions of each node in MANET?


    • Forward the packet to the next hop
    Before forwarding, Sender has to ensure that:
    . the packet moves towards its destination
    b. the number of hops(path length) to destination is minimum
    c. Delay is minimized
    d. Packet loss is mimimum through the path
    . Path does not have a loop
    6. Comparison of Link state and Distance vector.

    Routing Building Router can Conver- Event driven Use of


    protocol Topological Independently gence routing up- LSP
    map determine the dates
    shortest path (instead of
    to every periodic
    network updates)
    Link State Yes Yes Fast Generally Yes Yes
    Distance No No Slow Generally No No
    Vector

    IT6601 Mobile Computing Unit -IV Page 2


    STUDENTSFOCUS.COM
    Sri Vidya College of Engineering & Technology, Virudhunagar Course Material (Question Bank)

    7. List the Types of Communications.


    • Unicast
    o Message is sent to a single destination node
     Multicast

    o Message is sent to a selected subset of network nodes


     Broadcast
    
     Broadcasting is a special case of multicasting
    
     Message is sent to all the nodes in the network
    
    8. Define Proactive (table-driven) protocols.
     Also known as table-driven routing protocols
     Each node in the routing table maintains information about routes to every
    other node in the network
     o Tables are updates frequently due to
    • Changes in network topology
     • Node Movements
     N odes shutting down
    o Nodes can determine the best route to adestination
     Generates a large number of control messages to keep. the routing
     tables up-to-date
    o Generates overhead which consumes large part of available bandwidth
    9. Define Reactive protocols.
      Also called as On-demand routing protocol
     Nodes do not maintain up-to-date routing information o
    
    New routes are discovered only when required
     Uses flooding technique to determine the route
    O Flooding technique is used when the node does not have routing knowledge

    10. Compare MANET Vs VANET

    MANET VANET
    MANET - Mobile Adhoc NETwork VANET- Vehicular Adhoc NETworks
    Nodes moves r£t?domly Nodes moves regularly
    Mobility is low Mobility is high
    Reliability is medium Reliability is high
    Node lifetime depends on power source N ode lifetime depends on vehicle life
    time
    Network topology is sluggish and slow Network topology is frequent and fast

    IT6601 Mobile Computing Unit -IV Page 3


    STUDENTSFOCUS.COM
    Sri Vidya College of Engineering & Technology, Virudhunagar Course Material (Question Bank)

    PART - B

    1. What is MANET? Explain the characteristics and applications of MANET.


    2. Discuss the routing in MANET in detail.
    3. Explain traditional vs MANET routing protocol in detail.
    4. Write short notes on i) MANET ii) VANET, iii) traditional routing.
    5. Explain vehicular ad-hoc network in detail.
    6. What are the applications of MANET? Explain any one type of routing.
    7. What are the popular routing protocols used in MANET? Explain.
    8. Explain the characteristics of MANET.
    9. Explain the security issues in MANET.

    IT6601 Mobile Computing Unit -IV Page 4


    STUDENTSFOCUS.COM

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