Find out the wireless network speed and signal strength of the server.

#1: Find the wireless network card type information
$Lspci
$Lspci | grep-I Wireless
$Lspci | egrep-I -- color 'wifi | WLAN | wireless'

#2: Find the wireless NIC driver information
$Lspci-VV-s 0C: 00.0

Example:
0C: 00.0 network controller: Intel Corporation ultimate n WiFi Link 5300
Subsystem: Intel Corporation device 1121
Control: I/O-MEM + busmaster + speccycle-memwinv-vgasnoop-parerr-Stepping-serr + fastb2b-disintx-
Status: Cap + 66 MHz-UDF-fastb2b-parerr-devsel = fast> tabort-serr-
Kernel Driver in use: iwlwifi

#3: Configure Wireless Network Interfaces
Iwconfig Nic name
// The iwconfig and ifconfig commands are similar, but they are dedicated to wireless network interfaces.

Example:
Wlan0 IEEE 802.11 abgn Essid: "nixcraft5 G" Mode: managed frequency: 5.18 GHz Access Point: 74: 44: 44: 44: 57: FC Bit Rate = 6 Mb/s TX-power = 15 dBm
Retry long limit: 7 RTS thr: Off fragment thr: Off
Encryption key: Off
Power Management: off link quality = 41/70 signal level =-69 dBm RX invalid nwid: 0 RX invalid crypt: 0 RX invalid frag: 0
TX excessive retries: 0 invalid MISC: 28 missed Beacon: 0
#Iwconfig wlan0 | grep-I -- color quality// Query the network connection quality
#Iwconfig wlan0 | grep-I -- color signal// Query the signal strength

#4: dynamically display Connection Strength
#Watch-N 1 CAT/proc/NET/wireless