A network interface on each computer, usually called a network interface card（NIC) or

A.Network Interface Layer

B.Internetwork Layer

C.Host-to-Host Transport Layer

D.Application Layer

A.network interface layer, internet layer, transport layer and application layer

B.internet layer, network interface layer, transport layer and application layer

C.network interface layer, transport layer, network interface layer and application layer

D.application layer, transport layer, internet layer and network interface layer

A.路由器

B.交换机

C.网卡

D.网关

() layer just above the internet layer.

A、Network Interface

B、TCP

C、Host-to-Host Transport

D、Application

（71）A．network interface layer, internet layer, transport layer and application layer

B．internet layer, network interface layer, transport layer and application layer

C．network interface layer, transport layer, network interface layer and application layer

D．application layer, transport layer, internet layer and network interface layer

网络接口板又称为通信适配器(adapter)或网络接口卡 NIC (Network Interface Card)，或“网卡”。()

A.RouterA

B.RouterB

C.RouterC

D.RouterD

●(74) is a worldwide network of computer networks.

(74)

A. Modem

B. Interface

C. Internet

D. Protocol

A. Network Interface Card

B. Hub

C. Bridge

D. Router

A.ifconfig interface up

B.ifup interface

C.service network start

D.network up