单项选择题
A. There is insufficient room for more than one image.
B. The router has detected a copy of the current software image on the TFTP server.
C. The file can be relocated and not compressed.
D. The image to load is a binary executable file.
单项选择题 At Layer 2 of the OSI model, which component connects a host to the network media?（）
单项选择题 Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?（）
单项选择题 What will a router do during startup if a configuration file is not located in NVRAM?（）