Chapter 8: Subnetting IP Networks

Question 1

subnetting

Answer 1

the process of subdividing a network into smaller groupings of devices, or subnets

Question 2

broadcast domain

Answer 2

an area within which a broadcast transmission will be shared

Question 3

subnet

Answer 3

a subdivision of a network that is created either to conserve addresses or to support specific network requirements.

Question 4

VLSM

Answer 4

variable length subnet mask - allows subnets of different sizes to be created from the same network address

Question 5

three levels of IP addressing hierarchy

Answer 5

network, subnetwork, host

Question 6

two effects of excess broadcast traffic

Answer 6

• slow network due to excess traffic

- slow devices due to the need to process broadcasts

Question 7

three classful prefix-lengths

Answer 7

/8
/16
/24

Question 8

calculates the number of subnets created for n bits borrowed

Answer 8

2^n formula

Question 9

calculates the number of hosts per subnet for n bits remaining in the host field

Answer 9

2^n-2 formula

Question 10

the subnet mask for prefix /26

Answer 10

255.255.255.192

Question 11

structure of IPv6 unicast addresses

Answer 11

48-bit global routing prefix, 16-bit subnet ID, 64-bit interface ID

Question 12

gateway

Answer 12

a device that allows hosts on one network to communicate with hosts on other networks