A.There must be an IP header in the upper layer of this data frame

B.There must be a TCP header in the upper layer of this data frame

C.There must be a UDP header in the upper layer of this data frame

D.This data frame must carry VLAN TAG

A.The cost value (Cost) of the static route cannot be modified.

B.When the priority of the static route is 0, the route will definitely be preferred.

C.The default value of the static route priority is 60

D.The range of the static route priority value is 1-255

A.False

B.True

A.Every time an IP packet passes through a router, its TTL value will be reduced by 1

B.Each time an IP packet passes through a router, its TTL value will be increased by 1

C.TTL defines the time interval at which the source host can send data packets

D.TTL defines the number of packets that the source host can send

A.The network between RTA and SWC is the same conflict domain

B.The network between SWA and SWC is the same conflict domain

C.The network between SWA and SWC is the same broadcast domain

D.The network between SWA and SWB is the same broadcast domain