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Questions and Answers
When explaining an IPv6 GUA (global unicast address), what would be a good point for the instructor to make?
When explaining an IPv6 GUA (global unicast address), what would be a good point for the instructor to make?
- An IPv6 GUA is primarily used for multicast communication.
- An IPv6 GUA is globally unique and routable on the IPv6 internet. (correct)
- An IPv6 GUA is automatically assigned to devices by the local router.
- An IPv6 GUA is only used for local communication within a single network.
What are two characteristics of the 2.4GHz channels for implementing a WLAN with multiple APs?
What are two characteristics of the 2.4GHz channels for implementing a WLAN with multiple APs?
- 2.4GHz channels are less prone to interference from microwave ovens and Bluetooth devices.
- 2.4GHz channels have only three non-overlapping channels available (channels 1, 6, and 11). (correct)
- 2.4GHz channels have better penetration through walls compared to 5GHz channels.
- 2.4GHz channels have higher data transfer rates compared to 5GHz channels.
For accommodating at least 500 subnets from address 172.16.0.0/16, what is an appropriate subnet mask and corresponding number of available host IP addresses per subnet to meet the requirement?
For accommodating at least 500 subnets from address 172.16.0.0/16, what is an appropriate subnet mask and corresponding number of available host IP addresses per subnet to meet the requirement?
- $/22$ subnet mask with 1022 available host IP addresses per subnet. (correct)
- $/24$ subnet mask with 254 available host IP addresses per subnet.
- $/25$ subnet mask with 126 available host IP addresses per subnet.
- $/23$ subnet mask with 510 available host IP addresses per subnet.
In the context of networking, what does MAC address refer to?
In the context of networking, what does MAC address refer to?
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What is the purpose of a subnet mask in IP networking?
What is the purpose of a subnet mask in IP networking?
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Study Notes
IPv6 GUA
- A global unicast address is a unique identifier for an IPv6 interface, allowing it to be reached from any other IPv6 interface on the internet.
WLAN Implementation with Multiple APs
- The 2.4GHz channels have a characteristic of overlapping channels, which can cause interference between APs.
- The 2.4GHz channels have a limited number of non-overlapping channels, making it challenging to implement a WLAN with multiple APs.
Subnetting with 172.16.0.0/16
- To accommodate at least 500 subnets, an appropriate subnet mask is /22, which provides 1022 available host IP addresses per subnet.
- The subnet mask /22 allows for 1024 subnets, exceeding the required 500 subnets.
MAC Address
- A MAC (Media Access Control) address is a unique identifier assigned to a network interface controller (NIC) for communication at the data link layer.
Subnet Mask Purpose
- The purpose of a subnet mask is to determine the scope of a subnet, allowing devices to distinguish between local and remote hosts, and to route packets accordingly.
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