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Computer : Ch.1 Computer network (Textbook Exercise)
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Ch.1 Computer network (Textbook Exercise ) Q.1 Identify the following network components. 1. Router 2. Network Interface Card (NIC) 3. Fiber Optic Cable 4. Switch Q.2 How is a hub different from a switch? Answer: When the hub receives a message for a particular computer, it sends it to every other computer on the network. Therefore, hub-based networks are not very safe. Q.3 Explain the role of a modem in a network. Answer: A modem is a short form for the Modulator and Demodulator, used to convert analog signals to digital signals when they are received by the computer, and digital signals to analog signals when they are transmitted from the computer through cables. Q.4 Define router. What is it used for? Answer: A router is a hardware device that connects two different networks of the same type. I...
Computer : Ch.1 Computer Networks - Notebook work(Notes)
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Ch : 1 Computer Networks Computer Network A computer network is a system of interconnected computers and other devices that help us communicate, share resources and transfer information from one computer to another. Types of network · Local Area Network (LAN) o LAN is a Local Area Network. o LAN covers a small area confined to one building or within close proximity. · Metropolitan Area Network (MAN) o MAN is a computer network that is larger than LAN. o It can cover an entire city or even a large campus connecting computers across buildings far from each other. o Examples: Cable television network or telephone company network. · Wide Area Network (WAN) o It is a network that extends over a large geographical area. o ...