Are you studying for the CCNA certification?
Skillset can help you prepare! Sign up for your free Skillset account and take the first steps towards your certification.
Skillset can help you prepare! Sign up for your free Skillset account and take the first steps towards your certification.
A designer has decided to use the class B network address 172.16.0.0, this design needs a classful addressing scheme to fit five subnets with different sets of hosts, 200, 128, 99, 30 and 4 hosts. What two choices of subnet masks would accommodate this network? (choose two)
255.255.255.224
255.255.255.0
255.255.192.0
255.255.255.128
255.255.254.0
Class B subnet mask 255.255.255.0 (/24) has 8 bits of subnetting (Do not confuse it with Class C subnet mask) with 256 (2^8) subnets available and 254 (2^8-2)hosts. The other possible mask we can use is class B subnet mask 255.255.254.0 (/23) with 128 (2^7) subnets available and 510 (2^9-2)hosts. The other masks wouldn't simply fit the requirement. For example class B subnet mask 255.255.192.0 can hold up to 16,382 (2^14-2)hosts, which is enough however it only holds 4 subnets (2^2).
Study thousands of practice questions that organized by skills and ranked by difficulty.
Create a tailored training plan based on the knowledge you already possess.
Know when you’re ready for the high-stakes exam. Have the confidence that you will pass on your first attempt.