( )functions with two layers of protocols.It can connect networks of differentspeeds and can be adapted to an environment as it expands.

[单选题]functions with two layers of protocols. It can connect networks of different speeds and can be adapted to an environment as it expands.A．The hubB．The bridgeC．The routerD．The proxy

[单选题] (74) functions with two layers of protocols．It can connect networks of different speeds and can be adapted to an environment as it expands．(74) A．The hubB．The bridgeC．The routerD．The proxy

[单选题]Networks can be interconnected by different devices．In the physical layer，networks can be connected by (66) or Hubs，which just move the bits from one network to an identical network．One layer up we find bridgas and swiehes,which operate at data link

[单选题] Networks can be interconnected by different devices. In the physical layer，networks can be connected by（1）or hubs，which just move the bits from one network to an identical network. One layer up we find bridges and switches，which operate at data link

[单选题]Communication networks can be classified in terms of their physical arrangement or (73) Three common (73) are the star,bus,and ring.(73) A．structuresB．topologiesC．protocolsD．frames

[单选题]Networks can be interconnected by different devices. In the physical layer, networks can be connected by(66)or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data l

[单选题]Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link

[单选题]C．ommunication networks can be classified in terms of their physical arrangement or(73)Three common(73)are the star, bus, and ring.A．structuresB．topologiesC．protocolsD．frames

[单选题]Communication networks can be classified in terms of their physical arrange

[单选题]It can be inferred from the last two paragraphs that_____.［A］ Sony: The Private Life is the biography of Akio Morita［B］ Sony’s Japanese leaders have been too practical-minded［C］ this management problem of Sony cannot be rectified overnight［D］ Nathan