The mask of a subnet is 255.255.255.248. So the subnet at most can connect ( ) hosts.
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Network core does not include () .
A. routers
B. packet switches
C. links
D. smart phones
Which tool can capture network packets and display that packet data? ( )
A. Internet Explorer
B. Wireshark
C. FileZilla
D. Firefox
Two packets A and B are sent in the order A-B and will traverse a connectionless communication network. They will arrive at the destination ().
A. in any order, after having traversed the same route
B. in the order A-B, after possibly having traversed different routes
C. in any order, after possibly having traversed different routes
D. in the order A-B, after having traversed the same route
The service of TCP is（ ）.
A. connectionless transmission
B. unreliable data transmission
C. datagram
D. reliable data transmission
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