Cellular or mobile phones are the devices of telecommunication. They have provided the users with freedom of movement.
<h3>What are mobile phones?</h3>
Mobile phones are portable cell phones that send and receive calls, messages, pictures, audio, text, videos, files, etc., with the help of radiofrequency. It also uses internet and wifi services to send and receive data.
They have allowed users to move freely while using their device which was not possible with wired phones. The cellular devices are cordless and give freedom of movement to their users as they can easily talk while walking.
Therefore, mobile phones gave freedom of movement to the users.
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The answer is C: db9 port
In most routers, the console port is the port that is used to access your router’s console interface on your computer for configuration, administration and management purposes. To connect a router to a PC, you will need to use a rollover cable or a console. A rollover cable has a db9 connector on one end and an RJ 45 on the other end. Most computers these days do not have db9 (serial port connector). What you need is a USB to Serial converter. This cable will be connected to the computer via the db9 connector and then straight to the console port of the router
Six input devices are the keyboard<span>, </span>mouse<span>, microphone, scanner, digital camera, and </span>PC camera<span>. Three output devices are a </span>printer<span>, a </span>monitor<span>, and speakers. I hope this helps.</span>
Wireless networks<span> ( </span>English<span> : </span>wireless network<span> ) is the field of disciplines related to inter-system communication </span>computer<span> without using a cable. Wireless networks are often used for</span>computer networks<span> both in close proximity (a few meters, use tools / transmitter </span>bluetooth<span> ) or at a distance (via </span>satellite<span> ). This field is closely related to the fields </span>of telecommunications<span> ,</span>information technology<span> , and </span>computer engineering<span> . This type of network is popular in the category of wireless network include: </span>network of local area wireless<span> ( </span>wireless LAN / WLAN<span> ) and</span>Wi-Fi<span> .</span>