How many RJ45 Port Present in Wireless NIC?
0 because its wireless
Yes. A wireless modem is generally used to connect a computer to a wireless signal just as a telephone modem is used to connect to a telephone signal. It will normally connect through a network port on the PC or through a USB port. This service is offered by many cellular phone providers and others.
Suppose you have a computer with its Ethernet port used for a service other that internet. There is no way to combine services to the same router. how can this computer gain access to internet?
The easiest way to solve this problem: use a wireless connection. Many recent computers include a wireless NIC (network interface card), and can connect to wireless networks easily, leaving the Ethernet port free. This will only work, obviously, if this computer has a wireless card and there is a wireless network to connect to. If wireless is not an option, purchasing an additional Ethernet card will upgrade the computer to owning two Ethernet ports. One…
What is the types of ports that are often found coming directly off the motherboard to be used by external devices?
The Mac does not have a particular Internet port. It can connect to the Internet with either the built-in wireless connection to a wireless router, an Ethernet cable connected to a router or a modem connected to a USB socket. Standard IP Ports are used to connect to many Internet services, such as HTTP web pages through port 80, and a range of other TCP ports are used by individual applications. (See links below)
Many routers, incuding all cisco products, use a special cable to carry a terminal session between the serial port of a connected computer and the "console" port of the router (looks like an RJ45 but is wired differently). Cisco includes a custom cable with every router... it is almost alway a flat blue cable with a db9 on one end and an rj45 male on the other. Internally it is a "rollover". Pin 9 goes…