Question: In IPv6, what is the equivalent of a subnet mask?
Options:
Prefix length
CIDR notation
Subnet identifier
Network address
Correct Answer: Prefix length
Solution:
In IPv6, the prefix length indicates the number of bits used for the network portion, similar to a subnet mask in IPv4.
In IPv6, what is the equivalent of a subnet mask?
Practice Questions
Q1
In IPv6, what is the equivalent of a subnet mask?
Prefix length
CIDR notation
Subnet identifier
Network address
Questions & Step-by-Step Solutions
In IPv6, what is the equivalent of a subnet mask?
Step 1: Understand that IPv4 uses a subnet mask to define the network and host portions of an IP address.
Step 2: Know that in IPv6, there is no subnet mask like in IPv4.
Step 3: Learn that IPv6 uses a prefix length instead, which is written as a slash followed by a number (e.g., /64).
Step 4: Realize that the prefix length tells you how many bits are used for the network part of the address.
Step 5: Compare this to a subnet mask, where the number of bits for the network is also indicated, but in a different format.
IPv6 Prefix Length – The prefix length in IPv6 specifies how many bits of the address are used to identify the network, analogous to the subnet mask in IPv4.
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