40 Questions
What is the purpose of a broadcast address?
To reach all devices on the IPv4 network
What is the result of having all 1 bits in the host portion of an address?
A broadcast address
What is the purpose of a subnet mask?
To divide a network into smaller sub-networks
What is the network address of the given example?
192.168.10.0/24
What is the result of having all 0 bits in the host portion of an address?
A network address
What is the last address in the given example?
192.168.10.254/24
What is the broadcast address of the given example?
192.168.10.255/24
What is the first address in the given example?
192.168.10.1/24
What was the main purpose of Class A addresses in the legacy classful addressing system?
To support extremely large networks with more than 16 million host addresses
What is the range of addresses for Class B in the legacy classful addressing system?
128.0.0.0/16 to 191.255.0.0/16
What is the maximum number of host addresses supported by Class C addresses?
254
What was the main issue with the legacy classful addressing system?
It wasted many IPv4 addresses
What replaced the legacy classful addressing system?
Classless addressing
What is the range of addresses for Class C in the legacy classful addressing system?
192.0.0.0/24 to 223.255.255.0/24
What is the range of addresses for Class D in the legacy classful addressing system?
224.0.0.0 to 239.0.0.0
What is the range of addresses for Class E in the legacy classful addressing system?
240.0.0.0 to 255.0.0.0
What is the maximum number of hosts that can be connected in a single subnet with a subnet mask of 255.0.0.0?
16,777,214
What would be the result of subnetting the 10.0.0.0/8 network at the /16 octet boundary?
256 subnets, each connecting 65,534 hosts
What is the purpose of subnetting an IPv4 network?
To divide a larger network into smaller subnets
What is the subnet mask for a /24 network?
255.255.255.0
How many subnets can be defined by subnetting the 10.0.0.0/8 network at the /24 octet boundary?
65,536
What is the advantage of subnetting a network?
Improve network manageability
What is the maximum number of hosts that can be connected in a single subnet with a subnet mask of 255.255.255.0?
254
What is the binary representation of the subnet mask 255.0.0.0?
11111111.00000000.00000000.00000000
What is the result of subtracting 2 hosts per subnet?
16,382 hosts per subnet
How many hosts can each of the 1000 subnets support?
16,382 hosts
What is the internal part of a company's network called?
Intranet
What type of IPv4 addresses do devices in the intranet use?
Private IPv4 addresses
What is the prefix of the private IPv4 network address used in the intranet?
10.0.0.0/8
What is the part of the company's network containing resources available to the internet called?
DMZ
What is the purpose of variable-length subnet masking (VLSM)?
To minimize the number of unused host addresses per subnet
Why do network administrators use VLSM in the DMZ?
To minimize the number of unused host addresses per subnet
What is the primary function of a DMZ in a computer network?
To separate a LAN from untrusted networks, such as the public internet
What is the main consideration when planning subnets?
The number of subnets needed and the number of host addresses required for each network
How is the usable number of addresses calculated in a subnet?
2n – 2
What is the purpose of a network addressing scheme?
To accommodate the maximum number of hosts for each network and the number of subnets
What is the use of the prefix length /25 in subnetting?
To minimize the number of unused host IPv4 addresses and maximize the number of available subnets
What is the number of subnets and hosts for a subnet mask of 255.255.255.128?
2 subnets, 126 hosts
What is the primary consideration when allocating IP addresses to devices on a LAN?
The number of host addresses required for each network
What is the result of increasing the prefix length in a subnet?
More subnets and fewer hosts
Understand the concept of host addresses in computer networks, how they are assigned to devices, and their relationship with subnet masks and network addresses. Learn about the rules for host address combinations and how they differ within a network. Test your knowledge of host addresses and their role in computer networking!
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