According to the classification of transmission media, LAN can be divided into baseband networks and broadband networks.
According to the classification of transmission media, LAN can be divided into baseband networks and broadband networks.
SMS was originally designed as part of（），but is now available on a wide range of networks，including 3G and 4G networks. A: PHS B: AMPS C: GSM D: GPRS
SMS was originally designed as part of（），but is now available on a wide range of networks，including 3G and 4G networks. A: PHS B: AMPS C: GSM D: GPRS
There are three types of networks.
There are three types of networks.
DV is suitable for large scale networks.
DV is suitable for large scale networks.
local-area networks
local-area networks
The 5G networks are digital cellular networks, which is aimed at achieving high data rate, reduced latency, energy saving and reduced cost.
The 5G networks are digital cellular networks, which is aimed at achieving high data rate, reduced latency, energy saving and reduced cost.
Wireless networks need more protection.
Wireless networks need more protection.
After they ________ the first super computers in the 1940s, scientists and engineers began to develop ways to create networks.
After they ________ the first super computers in the 1940s, scientists and engineers began to develop ways to create networks.
Today's world is a“global village” because of the rapid expansion of worldwide transportation and communication networks.
Today's world is a“global village” because of the rapid expansion of worldwide transportation and communication networks.
Three large privately-owned networks in the United States are __________.
Three large privately-owned networks in the United States are __________.