Given the IP address range 192.168.100.0 through 192.168.100.255, which network mask segments these addresses into 16 subnets?（）

单项选择题Given the host IP address of 192.168.100.60 and a network mask of 255.255.255.224 (or 27), which address represents the correct network address for the referenced host?（）

A.192.168.100.48
B.192.168.100.16
C.192.168.100.0
D.192.168.100.32

多项选择题Which two fields are found in an Ethernet frame?（）

A.Version
B.TTL
C.Checksum
D.Flags
E.Data

多项选择题Which three of the following options are NOT fields found in an Ethernet frame?（）

A.Version
B.Type
C.Source Port
D.Flags
E.Data

多项选择题Which two statements are true regarding an Ethernet collision domain?（）

A.The likelihood of collisions occurring increases when a switch is used.
B.The likelihood of collisions occurring increases when a hub is used.
C.If a hub is used, the collision domain is limited to each device and the hub.
D.If a switch is used, the collision domain is limited to each device and the switch.

多项选择题Which two statements are true regarding an Ethernet collision domain?（）

A.If a switch is used, the collision domain includes all devices connected to the switch.
B.If a hub is used, the collision domain includes all devices connected to the hub.
C.If a hub is used, the collision domain is limited to each device and the hub.
D.If a switch is used, the collision domain is limited to each device and the switch.