Defining a Network (Subnets and Addressing)

Question 1

What is the prefix for an IP Address with a /24 subnet mask and an IP Address of 10.2.16.X

Answer 1

10.2.16

Question 2

True or False: 255.255.255.0 is considered a Class B subnet mask

Answer 2

False. That’s Class C

Question 3

True or False: A Class B address would be 255.255.0.0

Answer 3

True

Question 4

Class A, B and C subnets are considered what type of addresses?

Answer 4

Classful

Question 5

True or False: /24 is a shorthand for a Class B subnet?

Answer 5

False. That’s Class C

Question 6

True or False: /16 is shorthand for Class B subnet?

Answer 6

True

Question 7

True or False: /8 is shorthand for Class A subnet?

Answer 7

True

Question 8

255.0.0.0 is what class of Address?

Answer 8

Class A

Question 9

How many separate ranges are defined in private addressing?

Answer 9

3

Question 10

B

Question 11

What address range is in the 20 bit block of private addressing?

Answer 11

172.16.0.0 - 172.31.255.255

Question 12

What address range is in the 16 bit block of private addressing?

Answer 12

192.168.0.0 - 192.168.255.255

Question 13

True or False: ISP’s don’t block private addresses from routing out to the internet

Answer 13

False.

Question 14

What does NAT stand for?

Answer 14

Network Address Translation

Question 15

What does Network Address Translation accomplish?

Answer 15

It allows all the private addresses behind your router to assume the identity of the public IP address when they leave your network. Then when that traffic returns the router translates that public IP address back into the private address it came from.

Question 16

If a user can ping out to 8.8.8.8 but not google.com, what issue is likely?

Answer 16

DNS Issue