At Layer 2 of the OSI model, which component connects a host to the network media?（）

A. Hub
B. Switch
C. Bridge
D. NIC
E. Transceiver

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Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?（）

A. frame-relay arp
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What will a router do during startup if a configuration file is not located in NVRAM?（）

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C. it will search for the configuration file on a TFTP server and if no configuration file is found there, it will enter the setup dialog.
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