Networking & IPV6 Flashcards

1
Q

In a /27 subnet and a Subnet Mask of 255.255.255.224, the customer has how many Public Routable IP addresses?

A

29 Public Routable IP Addresses

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2
Q

How many times in an IPv6 address can you use the double colon to omit zeroes?

A

Only once

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3
Q

In a /30 subnet and a Subnet Mask of 255.255.255.252, the customer has how many Public Routable IP addresses?

A

1 Public Routable IP Address

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4
Q

In a /29 subnet and a Subnet Mask of 255.255.255.248, the customer has how many Public Routable IP addresses?

A

5 Public Routable IP Addresses

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5
Q

How many addresses is IPv6 capable of?

A

Approximately 3.4E+11 or 340 undecillion

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6
Q

An IP address in the range of 128-191.X.X.X is what class of IP address?

A

Class B Public

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7
Q

Comcast is migrating to this version of IP which will allow for nearly unlimited IP addresses.

A

IPv6

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8
Q

192.168.X.X is an example of what class of IP address?

A

Class C Private

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9
Q

What types of addresses does IPv6 support?

A

Unicast addresses and multicast addresses

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10
Q

Where can a customer go to see what their IPv6 address is?

A

www.comcast6.net

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11
Q

What does DHCP stand for?

A

Dynamic Host Configuration Protocol

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12
Q

10.1.X.X is an example of what class of IP address?

A

Class A Private

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13
Q

An IP address in the range of 192-223.X.X.X is what class of IP address?

A

Class C Public

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14
Q

In a /28 subnet and a Subnet Mask of 255.255.255.240, the customer has how many Public Routable IP addresses?

A

13 Public Routable IP Addresses

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15
Q

What are the two currently used COMCAST DNS’s?

A

75.75.75.75 and 75.75.76.76

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16
Q

What is the simplified version of the following IPv6 address? FE80:CD00:0000:0000:0000:0000:211E:729C

A

FE80:CD00::211E:729C

17
Q

In IPv6, what is Duplicate Address Detection?

A

It is a mechanism that detects duplicate addresses on a subnet

18
Q

How many bits is the address field for IPv6?

A

128

19
Q

An IP address in the range of: 1-127.X.X.X is what class of IP address?

A

Class A Public

20
Q

Comcast is continuing to provide an IPv4 address to each customer and is now additionally providing IPv6 addresses. What is this approach referred to?

A

Dual Stack Mode

21
Q

What is dual stack mode?

A

When IPv4 and IPv6 run on the same network infrastructure

22
Q

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.

A

Online

23
Q

What is the loopback address for IPv6?

A

0000:0000:0000:0000:0000:0000:0000:0001or ::1

24
Q

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.

A

IPv6 to IPv4 MAC Switcher

25
Q

How are IPv6 addresses written or expressed?

A

In 8 groups of 4 hexadecimal digits separated by colons

26
Q

Why don’t you need a traditional subnet mask for IPv6?

A

The subnet ID is built into the address