Wireless LANs use high frequency radio signals, infrared light beams, or lasers to communicate between the workstations, servers, or hubs. Each workstation and file server on a wireless network has some sort of transceiver/antenna to send and receive the data. Information is relayed between transceivers as if they were physically connected. For longer distance, wireless communications can also take place through cellular telephone technology, microwave transmission, or by satellite.
Fiber optic cabling consists of center glass core surrounded by several layers of protective materials. It transmits light rather than electronic signals eliminating the problem of electical interference. This makes it ideal for certain environments that contain a large amount of electrical interference. It has also made it the standard for connecting networks between buildings, due to its immunity to the effects of moisture and lighting. Fiber optic cable has the ability to transmit signals over much longer distances than coaxial and twisted pair. It also has the capability to carry information at vastly greater speeds. This capacity broadens communication possibilities to include services such as video conferencing and interactive services. The cost of fibes optic cabling is comparable to copper cabling; however, it is more difficult to install and modify. 10 BaseF refers to the specifications for fiber optic cable carryin Ethernet signals.
Current Affairs (GK) Of 27 July 2015 In English For Banking Exams
16 Years Since Kargil, Army Still Short of Ammo
Union defence minister Manohar Parrikar along with the Army Chief General Dalbir Singh Suhag, the Vice Admiral P Murugesan, and Chief of the Air Staff, Air Chief Marshal Arup Raha paying homage at Amar Jawan Jyoti on the occasion of Kargil Vijay Diwas.
The 16th anniversary of Kargil Vijay Diwas was observed here with a solemn ceremony that brought back memories of the bravehearts who sacrificed their lives to lead India to victory in the 1999 conflict against Pakistan.
The proceedings here in Ladakh region of Jammu and Kashmir began with a solemn wreath-laying ceremony at the Drass War Memorial led by the army"s Northern Command chief Lieutenant General D.S. Hooda.
The army chief recalled the days when he served as a field commander in the area. IANS.
The standard connector for unshielded twisted pair cabling is an RJ-45 connector. This is a plastic connector that looks like a large telephone-style connector. A slot allows the RJ-45 to be inserted only one way. RJ stands for Registered Jack, implying that the connector follows a standard borrowed from the telephone industry. This standard designated which wire goes with each pin inside the connector.
Cable is the medium through which information usually moves from one network device to another. There are several types of cable which are commonly used with LANs. In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types. The type of cable chosen for a network is related to the network's topology, protocol, and size. Understanding the characteristics of different types of cable and how they relate to other aspects of a network is necessary for the development of a successful network.