Flashcards in Networking & IPv6 Deck (27)
In a /27 subnet and a Subnet Mask of 255.255.255.224, the customer has how many Public Routable IP addresses?
29 Public Routable IP Addresses
How many times in an IPv6 address can you use the double colon to omit zeroes?
In a /30 subnet and a Subnet Mask of 255.255.255.252, the customer has how many Public Routable IP addresses?
1 Public Routable IP Address
In a /29 subnet and a Subnet Mask of 255.255.255.248, the customer has how many Public Routable IP addresses?
5 Public Routable IP Addresses
How many addresses is IPv6 capable of?
Approximately 3.4E+11 or 340 undecillion
An IP address in the range of 128-191.X.X.X is what class of IP address?
Class B Public
Comcast is migrating to this version of IP which will allow for nearly unlimited IP addresses.
192.168.X.X is an example of what class of IP address?
Class C Private
What types of addresses does IPv6 support?
Unicast addresses and multicast addresses
Where can a customer go to see what their IPv6 address is?
What does DHCP stand for?
Dynamic Host Configuration Protocol
10.1.X.X is an example of what class of IP address?
Class A Private
An IP address in the range of 192-223.X.X.X is what class of IP address?
Class C Public
In a /28 subnet and a Subnet Mask of 255.255.255.240, the customer has how many Public Routable IP addresses?
13 Public Routable IP Addresses
What are the two currently used COMCAST DNS's?
18.104.22.168 and 22.214.171.124
What is the simplified version of the following IPv6 address? FE80:CD00:0000:0000:0000:0000:211E:729C
In IPv6, what is Duplicate Address Detection?
It is a mechanism that detects duplicate addresses on a subnet
What are the advantages of IPv6?
Simplified header format for efficient packet handling
Larger payload for increased throughput and transport efficiency
Hierarchical network architecture for routing efficiency
Support for widely deployed routing protocols (OSPF, BGP, etc.)
Autoconfiguration and plug-and-play support
Elimination of need for network address translation (NAT) and application layered gateway (ALG)
Increased number of multicast addresses
How many bits is the address field for IPv6?
An IP address in the range of: 1-127.X.X.X is what class of IP address?
Class A Public
Comcast is continuing to provide an IPv4 address to each customer and is now additionally providing IPv6 addresses. What is this approach referred to?
Dual Stack Mode
What is dual stack mode?
When IPv4 and IPv6 run on the same network infrastructure
One way technicians can tell if an IPv6 compatible modem is having an issue related to IPv6 and is ranging is because "this" modem light will continue to blink.
What is the loopback address for IPv6?
This tool in the National CMTS Operations Portal can be used by a field technician to verify a CMTS is set for IPv6, then switch the cable-mac that the modem is on to IPv4.
IPv6 to IPv4 MAC Switcher
How are IPv6 addresses written or expressed?
In 8 groups of 4 hexadecimal digits separated by colons