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Fundamental of Network
The concept of network is not new. In simple it means an interconnected set of some objects. For decades we are familiar with the radio, television railways. Highways banks and other types of network . in recent years the network that is making significant impact in our day life is the computer network. By computer network we mean an interconnected set of autonomous computer. The term autonomous implies that the computers can function independent from others.
The definition of networking is actually quite simple. A network is simply a collection of computer or other hardware devices that the are connected together either physically or logically, using special hardware and software, to allow them to exchange information and cooperate. Networking is the term describes the process involves in designing.
Determine the command mode necessary to enter the extended ping command Ans) Router#
Fiber Optic Cable A fiber optic cable is made of glass or plastic and transmits signals in the form of light pulses. An optical fiber is a thin flexible medium conducts
Repeaters - Operate only in physical layer - Connects two segments of the same LAN - Both segments must be of the same protocol - Only forwards frames; does not filter
Explain the working of ISDN Stands for Integrated Services Digital Network. It is a way to move more data over existing regular phone lines. ISDN is rapidly becoming availab
Switch Generally called as two layer switch . it performs on physical and data link layers. It is a bridge it has many ports that allow better performance. Since
Shortest path The dijkstra algorithms four steps to discover what it called the shortest path tree . a.The algorithm beings to build the tree identifying its root.
Bridges The bridge function is to attach separate homogeneous networks. Bridges map the Ethernet address of the nodes residing on each network segment and allow only essential
State about the communications network 1) The communications network may only accept blocks of data up to a specific size. (2) Error control might be more effective with a
Q. Advantages of Fiber Optics? - Higher bandwidth in comparison to twisted-pair and coaxial cable is not limited by medium but by equipment used to generate and receive signals
Alice sends a message to Bob, encrypted with a symmetric key. Bob decrypts the message and finds it is a purchase order for an expensive workstation. When the time comes to deliver
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