Questions and Answers
What would be the maximum number of hosts that can be supported on each subnet if you are given the following IP address: 152.77.0.0/19?
What is the network number of a host with the address of 152.77.190.27 using the subnet mask of 255.255.240.0?
You have an IP address of 192.100.100.70/24. You need to create 31 subnets. What will be your subnet mask?
What is the ID network number of the first usable subnet using an IP address of 39.0.0.0/15?
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How many subnets can an IP address of 152.77.0.0/19 support?
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You have been provided with an IP address of 128.199.0.0 in which you are required to create 16 subnets. What will be your proposed subnet mask?
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You are given an address of 10.10.10.8/8. You need to create 3,000 subnets. What will be your new subnet mask?
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You have created 30 subnets with an IP 128.199.0.0/21. What is the last node on the 3rd usable subnet?
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Based on this information, what is the host and network address for IP Address: 75.20.10.3/24?
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You need to calculate what the address of the first usable subnet from a given IP address and mask of 216.122.44.0/28 would be?
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If you use a network mask of 255.255.255.240 with a given IP address of 216.122.44.0, how many supported subnets could you create?
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If you were subnetting an IP address of 200.200.200.200 with a subnet mask of 255.255.255.224, how many supported subnets will you have created?
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How many subnets can an IP address of 39.0.0.0/15 support?
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If you had an IP 128.199.0.0 and you created 30 subnets with this IP address, what would be the maximum number of hosts that you could put on each subnet?
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What is the maximum number of hosts you can have on each subnet if you had an IP address of 39.0.0.0/15?
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What is the network number for this host: 10.34.23.5/24?
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You have an IP address of 192.35.44.10/24. What subnet mask would you use to create 19 hosts per subnet?
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What is the address of the second usable subnet?
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As the network administrator, what subnet mask will you use to create 12 subnets with an IP address of 216.122.44.0?
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You are given an IP address of 39.0.0.0 in which you must create 100 subnets. What will be your proposed subnet mask?
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What is the network address for a host with an address of 39.7.200.200 when subnetting an IP address as 39.0.0.0/15?
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What is the first usable subnet for the IP Address 140.150.150.32 with subnet mask 255.255.192.0?
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What is the network address of a host with an IP address of 200.200.200.41/27?
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What subnet mask would you use if you need to plan for 1200 subnets with a given IP address of 75.75.0.0/16?
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What is the maximum number of hosts you could provide to an IP address of 210.21.21.40 with a subnet mask of 255.255.255.224?
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What is your proposed subnet mask if you have an IP address of 172.16.4.58 and use 12 bits from your host octets?
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What are the valid hosts for the range 172.16.4.48 - 172.16.4.63?
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If you have a B Class network in which you are borrowing 10 bits from your host octets to form a subnet mask, how many subnets and how many hosts would you have?
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You have a 22 bit subnet mask. How many subnets and how many hosts do you have?
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You have a Class C network address divided into three subnets. You will need to add two more subnets in the next two years. Each subnet will have 25 hosts. Which subnet mask should you assign?
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How many hosts are there on a Class C network with a default subnet mask?
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Your organization is assigned the network ID 114.0.0.0 by InterNIC. You need to redesign the subnets into a total of 25 subnets. What should your subnet mask value be?
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You have a network ID of 192.168.1.0 and need to divide it into nine subnets. Which subnet mask should you assign?
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Would a computer with an IP address of 200.24.40.61 and a subnet mask of 255.255.255.192 be on the same subnet as a computer with an IP address of 200.24.40.68 and the same subnet mask?
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If you have a Class C network in which you are using 6 bits to create a new subnet mask, how many subnets and how many hosts do you have?
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Would a computer with an IP address of 203.68.79.98 and a subnet mask of 255.255.255.224 be on the same subnet as a computer with an IP address of 203.68.79.125 and a subnet mask of 255.255.255.224?
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How many Class A networks are there in the world?
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You have a subnet mask of 255.255.255.248. How many subnets and hosts do you have?
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A company is assigned the network ID 150.134.0.0 by InterNIC. The company wants to have 15 subnets and up to 1,000 hosts per subnet. What should be the value of the subnet mask?
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If you have a 19 bit subnet mask, how many subnets and how many hosts do you have?
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You have a network ID of 172.16.0.0 with eight subnets. Which subnet mask should you assign for maximum host IDs?
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You have a Class A network address with 60 subnets. You need to add 40 new subnets. Which subnet mask should you assign?
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You have a Class B network address divided into 30 subnets needing 600 host IDs for each subnet. Which subnet mask should you assign?
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A company is assigned the network ID 150.134.0.0 by InterNIC. The company wants to have 15 subnets and how many bits are needed for the custom subnet mask?
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You have a class C network address of 192.168.19.0 with four subnets. Which subnet mask should you assign?
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Would a computer with an IP address of 203.68.69.29 be on the same subnet as a computer with an IP address of 203.68.69.35 and a subnet mask of 255.255.255.224?
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You need to consider which two factors when defining the subnet mask? (Select two answers only)
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Would a computer with an IP address of 198.24.36.82 be on the same subnet as a computer with an IP address of 198.24.36.126 and the same subnet mask?
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You have an IP address of 172.16.3.57 and use 11 bits from your host octets to create a subnet mask. What are your valid hosts?
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You have a Class C network address of 192.168.88.0 and need the largest possible number of subnets, with up to 12 hosts per subnet. Which subnet mask should you assign?
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By default, a subnet mask would allow for what?
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Which list represents the IP address class of each listed IP address?
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How would you identify the address and mask using CIDR notation for the IP address of 129.11.99.78 with the default subnet mask?
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Which of the following IP addresses have a default subnet mask of 255.255.0.0? (Select three answers only)
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Which of the following is a valid IP version 4 address? (Select two answers only)
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Which of the following is the last IP address that can be assigned to hosts on the network 166.70.0.0 using the default subnet mask?
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What is the binary format for the following decimal IP address 131.9.202.111?
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A host has the address of 100.55.177.99/16. Which of the following is the broadcast address for the subnet?
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What subnet mask value would you use for an IP address of 192.160.99.11/16?
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Which masks should you use to assign the IP address 21.155.67.166 to a host on the network?
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Which three IP addresses belong to the Class A network 140.0.0.0? (Select three answers only)
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Study Notes
IPv4 Advanced Subnetting and Masking
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Maximum hosts for IP 152.77.0.0/19 is 8,190, calculated using 13 bits available for hosts (2^13 - 2).
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Network number for host 152.77.190.27 with mask 255.255.240.0 is 152.77.160.0, determined by subnet increments of 32.
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Subnet mask for 31 subnets with IP 192.100.100.70/24 is 255.255.255.252, achieved by borrowing 6 bits for the subnets.
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First usable subnet of IP 39.0.0.0/15 is 39.2.0.0, calculated by understanding subnet increments.
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IP address 152.77.0.0/19 can support 6 subnets, since borrowing 3 bits yields 2^3 - 2.
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Proposed subnet mask for creating 16 subnets from 128.199.0.0 is 255.255.248.0, needing 5 bits borrowed for subnetting.
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New subnet mask to create 3,000 subnets from IP 10.10.10.8/8 is 255.255.240.0, obtained by borrowing 12 bits.
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Last node address on the 3rd usable subnet for IP 128.199.0.0/21 is 128.199.31.254.
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For IP 75.20.10.3/24, the host address is 0.0.0.3 and network address is 75.20.10.0 with a /24 mask.
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First usable subnet for IP 216.122.44.0/28 is 216.122.44.16, based on incremental values derived from subnetting.
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Using subnet mask 255.255.255.240 supports 14 subnets, with 14 hosts possible on each subnet calculated from 4 trailing bits.
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IP 200.200.200.200 with mask 255.255.255.224 can create 6 subnets based on 3 bits borrowed.
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Maximum hosts on each subnet for IP 39.0.0.0/15 is 131,070, calculated using 17 remaining bits for hosts.
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Network number for host 10.34.23.5/24 is 10.34.23.0, with subnet mask /24 applied.
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Subnet mask for 19 hosts from IP 192.35.44.10/24 is 255.255.255.224, utilizing 5 trailing bits.
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Second usable subnet for IP 128.199.0.0/21 is 128.199.16.0.
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Proposed subnet mask for 12 subnets from IP 216.122.44.0 is 255.255.255.240, allowing for valid subnet calculations.
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Subnet mask for 100 subnets from IP 39.0.0.0 is 255.254.0.0, requiring 7 bits for 128 subnets.
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Network address for host 39.7.200.200 is 39.6.0.0, derived from subnet ranges.
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First usable subnet for IP address 140.150.150.32 with mask 255.255.192.0 is 140.150.64.0.
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Network address for 200.200.200.41/27 is 200.200.200.32, falling into a subnet range determined by the incremental value.
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Subnet for 75.75.0.0/16 intending for 1200 subnets is 75.75.0.0/27, achieved through borrowing sufficient bits.
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Maximum hosts for IP 210.21.21.40 with subnet mask 255.255.255.224 is 30, using 5 trailing bits for hosts.
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Valid hosts for 172.16.4.58 with borrowed 12 bits yield 172.16.4.49 - 172.16.4.62, excluding the broadcast address.
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Borrowing 10 bits from a Class B network results in 1022 subnets and 62 hosts per subnet.
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A 22-bit subnet mask provides 4,194,302 subnets with only 2 hosts per subnet when working backwards through subnet types.
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Class C network with two more subnets requiring 25 hosts each should use 255.255.255.224 for sufficient host allowance.
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Default Class C network mask supports 254 hosts, confirmed through standard calculations of available addresses.
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Organization's redesign plan from an ID of 114.0.0.0 to 25 manageable subnets for approximately 100,000 hosts each notices a significant restructuring requirement.### Subnet Masks and Networks
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Subnet Mask Values: Common subnet masks include 255.0.0.0, 255.248.0.0, 255.255.248.0, and 255.255.255.240.
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CIDR Notation: Denotes the subnet mask using a slash followed by the number of bits (e.g., /16, /24).
Subnetting Examples
- Subnets for 192.168.1.0: To create nine subnets while maximizing host IDs, use a subnet mask of 255.255.255.240, allowing 14 subnets with 14 hosts each.
- Host Count in Class C Networks: If borrowing 6 bits for subnets in a Class C network, 62 subnets can be created with 2 hosts each.
IP Address Classifications
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Class A, B, C: Determined by the first octet range:
- Class A: 0-126
- Class B: 128-191
- Class C: 192-223
- Valid IP Addresses: Must consist of four octets within the range 0-255.
Binary Representation
- IP to Binary Conversion: Requires knowledge of binary values for octets; for example, IP address 131.9.202.111 converts to binary as 10000011.00001001.11001010.01101111.
Broadcast Addresses
- Understanding Broadcast Addresses: The last address in a subnet is reserved for broadcast. For example, for the subnet 100.55.177.99/16, the broadcast address is 100.55.255.255.
Subnetting Considerations
- Subnet Mask Impact: The number of subnets and hosts per subnet is affected by the chosen subnet mask.
- Host Capacity: When utilizing a mask of 255.255.255.240, a maximum of 14 hosts can be assigned per subnet with various subnet configurations.
Specific Calculations
- Class B Network: A Class B network using a mask of 255.255.252.0 can support 600 hosts per subnet while meeting the requirements for additional new subnets.
- IP Address Configuration: When configuring an IP with a default subnet mask, like 21.155.67.166, the correct mask is 255.0.0.0.
Quiz and Test Preparation
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Question Examples:
- Determine the correct subnet mask for varied requirements such as host counts and number of necessary subnets.
- Identify valid IP addresses based on the rules governing IPv4 structures.
Additional Facts
- Hosts Calculation: Each borrowed bit from the host portion increases the number of subnets but decreases the number of hosts per subnet.
- Networking Standards: Understanding default subnet masks is crucial for configuring networks efficiently. Class A defaults to 255.0.0.0, Class B to 255.255.0.0, and Class C to 255.255.255.0.
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Description
Test your knowledge on advanced subnetting concepts with this quiz focused on the IP address 152.77.0.0/19. Challenge yourself to calculate the maximum number of hosts per subnet by analyzing subnet masks and the number of available bits.
