VLSM: Efficient IP Address Allocation
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Questions and Answers

What is the main advantage of using Variable Length Subnet Mask (VLSM) in IP network design?

  • To reduce the number of subnets in a network
  • To simplify the network configuration
  • To increase the number of available IP addresses
  • To allocate IP addresses more efficiently and effectively (correct)

    • What is the result of using a traditional subnet mask in a network with subnets of different sizes?

  • Optimal use of IP addresses
  • Increased network security
  • No impact on IP address usage
  • Inefficient use of IP addresses (correct)

    • What is the purpose of using different subnet masks in VLSM?

  • To create a hierarchical network structure
  • To increase the number of available subnets
  • To simplify the network configuration
  • To allocate IP addresses based on the number of hosts in each subnet (correct)

    • What is the benefit of using VLSM in a network with subnets of different sizes?

    <p>More efficient use of IP addresses</p> Signup and view all the answers

    What is the result of using a subnet mask of 255.255.255.0 in a subnet with 10 hosts?

    <p>254 available IP addresses</p> Signup and view all the answers

    What is the purpose of assigning a subnet mask of 255.255.255.128 to a subnet with 10 hosts?

    <p>To provide 126 available IP addresses</p> Signup and view all the answers

    What is the main difference between VLSM and traditional subnetting?

    <p>The use of fixed or variable subnet masks</p> Signup and view all the answers

    What is a major advantage of VLSM over traditional subnetting?

    <p>It allows for more efficient use of IP addresses</p> Signup and view all the answers

    What is a potential disadvantage of VLSM?

    <p>It increases the risk of IP address fragmentation</p> Signup and view all the answers

    What is CIDR based on?

    <p>The idea that IP addresses can be allocated and routed based on their network prefix</p> Signup and view all the answers

    What does VLSM stand for?

    <p>Variable Length Subnet Mask</p> Signup and view all the answers

    What is the main advantage of VLSM over FLSM?

    <p>Minimum wastage of IP addresses</p> Signup and view all the answers

    What is represented by the slash notation in CIDR?

    <p>The number of bits in the network prefix</p> Signup and view all the answers

    What is a benefit of CIDR over traditional class-based addressing?

    <p>It allows for more flexible IP address allocation</p> Signup and view all the answers

    What is the process of implementing VLSM?

    <p>Subnetting a network with multiple masks</p> Signup and view all the answers

    What is a potential challenge of implementing VLSM?

    <p>It requires more advanced networking knowledge and skills</p> Signup and view all the answers

    What is the primary benefit of VLSM in network utilization?

    <p>More efficient use of IP addresses</p> Signup and view all the answers

    What is a disadvantage of VLSM compared to traditional subnetting?

    <p>It is more expensive</p> Signup and view all the answers

    What is the characteristic of VLSM subnetting?

    <p>Subnets can be of variable size</p> Signup and view all the answers

    When is VLSM preferred over FLSM?

    <p>For public IP addresses</p> Signup and view all the answers

    What is the benefit of VLSM in terms of scalability?

    <p>It allows for better scalability</p> Signup and view all the answers

    What is one of the main advantages of using CIDR?

    <p>Efficient use of IP addresses</p> Signup and view all the answers

    What is a disadvantage of using CIDR?

    <p>Compatibility issues with older network devices</p> Signup and view all the answers

    What is the main drawback of Classful Addressing?

    <p>Wastage of IP addresses</p> Signup and view all the answers

    What is the purpose of CIDR in IP address allocation?

    <p>To reduce wastage of IP addresses</p> Signup and view all the answers

    What is the format of a 32-bit address in CIDR?

    <p>a.b.c.d / n</p> Signup and view all the answers

    What is one of the rules for forming CIDR blocks?

    <p>All IP addresses must be contiguous</p> Signup and view all the answers

    What is the benefit of using CIDR in terms of network performance?

    <p>Better routing</p> Signup and view all the answers

    What is the result of using CIDR in terms of administrative overhead?

    <p>Reduced administrative overhead</p> Signup and view all the answers

    What is the condition for the first IP address of a CIDR block?

    <p>The least significant part should always start with zeroes</p> Signup and view all the answers

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