You have been asked to use a 25 bit subnet mask to segment the following network block:
209.18.12.0.
How many usable will there be per subnet?（）

单项选择题What are the usable hosts on the 200.50.12.64 26 network?（）

A..65 through .126
B..64 through .127
C..66 through .128
D..65 through .127

单项选择题What are the usable hosts on the 192.168.1.24 29 network?（）

A..24 through .48
B..24 through .32
C..25 through .30
D..35 through .31

单项选择题You have been asked to use a 28 bit subnet mask to segment the following network block: 108.12.5.0. How many usable hosts per sub-net could you create?（）

A.10 hosts
B.14 hosts
C.12 hosts
D.16 hosts

单项选择题You have been asked to use a 30 bit subnet mask to segment the following network block: 108.12.5.0. How many useable subnetworks and usable hosts could be created?（）

A.32 networks with 8 hosts
B.62 networks with 2 hosts
C.30 networks with 16 hosts
D.32 networks with 14 hosts

多项选择题Which three steps are part of the PPP CHAP 3-way handshake?（）

A.The caller sends a challenge to the authenticator.
B.The authenticator sends a challenge to the caller.
C.The caller encrypts the challenge using a secret.
D.The caller sends a success message to the authenticator.
E.The authenticator encrypts the challenge using a secret.