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Questions and Answers
Which of the following is the broadcast address for the subnet in which IP address 200.10.5.68/28 resides?
Which of the following is the broadcast address for the subnet in which IP address 200.10.5.68/28 resides?
What is the number of network (N), subnet (S), and host (H) bits for the IP address 172.16.112.1/25?
What is the number of network (N), subnet (S), and host (H) bits for the IP address 172.16.112.1/25?
N: 16, S: 9, H: 7
Which classful subnet mask would you use for a Class C network that has 5 subnets, each with at least 16 hosts?
Which classful subnet mask would you use for a Class C network that has 5 subnets, each with at least 16 hosts?
Determine the number of network (N), subnet (S), and host (H) bits for IP address 192.168.192.10/29.
Determine the number of network (N), subnet (S), and host (H) bits for IP address 192.168.192.10/29.
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What is the dotted-decimal notation (DDN) equivalent of /18?
What is the dotted-decimal notation (DDN) equivalent of /18?
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Which IP address would you ping to test the IP stack on your local host?
Which IP address would you ping to test the IP stack on your local host?
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Which of the options shown does NOT mean the same thing?
Which of the options shown does NOT mean the same thing?
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What is the valid host range for the IP address 172.16.10.22 255.255.255.240?
What is the valid host range for the IP address 172.16.10.22 255.255.255.240?
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Identify the broadcast address for the IP address 172.16.8.159 / 255.255.255.192.
Identify the broadcast address for the IP address 172.16.8.159 / 255.255.255.192.
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What is the minimum number of hosts required for the largest subnet in an IP subnet plan that calls for 5 subnets?
What is the minimum number of hosts required for the largest subnet in an IP subnet plan that calls for 5 subnets?
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Study Notes
IP Addressing and Subnetting Concepts
- Broadcast Address for Subnet: For IP address 200.10.5.68/28, the broadcast address is 200.10.5.79.
- Subnet ID Calculation: The subnet ID is identified by taking the closest multiple of 16 below the IP address value in the fourth octet, leading to 200.10.5.64.
Class B Addressing
- IP Address and Subnet Breakdown: The IPv4 address 172.16.112.1/25 is a Class B address consisting of 16 network bits and 16 total host bits.
- Host Bit Split: The /25 subnet mask allocates 9 bits for subnets and 7 bits for hosts, allowing for more granular control over smaller address spaces.
Class C Subnetting
- Subnet Mask Usage: For a Class C network needing 5 subnets with at least 16 hosts each, use the subnet mask 255.255.255.224 (/27), which provides 3 subnet bits and 5 host bits.
Help Desk Scenarios
- IP Address Characteristics: The IPv4 address 192.168.192.10/29 is a Class C address, allocating 24 network bits and 8 host bits, with a 29-bit mask dividing host bits into 5 for subnets and 3 for hosts.
Dotted Decimal Notation
- CIDR Conversion: The CIDR notation of /18 converts to 255.255.192.0 in dotted-decimal notation, achieved by binary conversion.
Local Host Testing
- Loopback Address: The reserved IP loopback address for testing the local host's IP stack is 127.0.0.1.
Subnet ID Terminology
- Synonymity in Networking: The terms subnet ID, subnet number, and subnet address are synonymous and used interchangeably in network discussions.
Valid Host Range Determination
- Calculating Host Range: For the address 172.16.10.22 with a mask of 255.255.255.240 (/28), the valid host range is determined as 172.16.10.17 to 172.16.10.30, based on subnet calculations.
Broadcast Address from Subnet Information
- Finding the Broadcast Address: For the IP address 172.16.8.159/255.255.255.192, the broadcast address is 172.16.8.191. This is calculated by determining the subnet ID (172.16.8.128) and adjusting based on the mask (adding 64 to the ID and subtracting 1).
Subnet Planning for Large Host Requirements
- IP Subnet Plan Design: For a subnet plan requiring 5 subnets with a minimum of 5000 hosts using a single mask throughout a Class B network, the configuration must meet the criteria for public IP address allocation.
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Description
Test your knowledge on subnetting with this quiz covering important concepts from Networking Lesson 4. Specifically, explore how to identify broadcast addresses and subnet masks. Perfect for networking students looking to solidify their understanding of IP addressing.
