IP Subnetting

What is a subnet mask?

• A subnet mask is a tool for protecting against malware attacks

• A subnet mask is a 32-bit number that separates the network portion from the host portion of an IP address.

• A subnet mask is a type of facial covering used in computer networking

• A subnet mask is a feature that allows you to change the color scheme of your computer screen

How is the network address calculated in IP subnetting?

• Perform a bitwise AND operation between the IP address and the subnet mask.

• Divide the IP address by the subnet mask

• Add the IP address and the subnet mask

• Perform a bitwise OR operation between the IP address and the subnet mask

Explain the concept of host address in IP subnetting.

• The host address is the part of the IP address that identifies the network

• Host address is always the first octet in an IP address

• Host address is used for routing data between different subnets

• The host address in IP subnetting is the part of the IP address that identifies a specific device within a subnet.

What is the purpose of subnetting in IP addressing?

• To improve network performance by reducing congestion

• To increase network security by hiding IP addresses

• To simplify network management by adding more complexity

• To divide a larger network into smaller subnetworks for various benefits.

What is the difference between a subnet mask and a default gateway?

• A subnet mask is used for encryption, while a default gateway is used for decryption.

• A subnet mask is a physical device, while a default gateway is a virtual concept.

• A subnet mask is used for wireless networks, while a default gateway is used for wired networks.

• The subnet mask is used for network segmentation, while the default gateway is used for routing traffic outside the local network.

How many bits are typically reserved for the subnet ID in a subnet mask?

• 16 bits

• 32 bits

• 8 bits

• 24 bits

What is the formula to calculate the number of hosts per subnet?

• 2^(32 + n) - 2

• 2^(n - 32) - 2

• 2^(32 - n) - 2

• 2^(n) - 2

What is the significance of CIDR notation in IP subnetting?

• CIDR notation simplifies IP subnetting by combining IP address and subnet mask into a single notation.

• CIDR notation is a protocol used to assign IP addresses in subnetting

• CIDR notation is used for encrypting IP addresses in subnetting

• CIDR notation is a type of firewall used in IP subnetting

Explain the difference between Classful and Classless IP addressing.

• Classful IP addressing has fixed network and host portions based on classes (A, B, C, D, E), while Classless IP addressing allows for variable length subnet masks.

• Classful IP addressing allows for variable length subnet masks.

• Classful IP addressing and Classless IP addressing are the same.

• Classless IP addressing has fixed network and host portions based on classes (A, B, C, D, E).

How does VLSM (Variable Length Subnet Masking) improve IP address allocation?

• VLSM reduces network security

• VLSM improves IP address allocation by subnetting a network into multiple subnets of varying sizes.

• VLSM increases network latency

• VLSM limits the number of devices on a network