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St. Mary’s School, Dinhata, Sub- Computer, , 3rd Unit Test, Class VIII, , F.M:-30, , Section –A, A. Fill in the blanks:1.___________ is expansion card which provides the network access to a computer., 2.___________ is a set of rules that governs the communication between computers on a network., 3. In ________ topology every node is connected to each other node., 4.___________ is a protocol used to send e-mail messages over the internet., 5. GPS stands for ________________., , [5], , B. Tick the correct option:1. Which of these terms describe a computer that is connected to a network., a. Unit, b. Node, c. Attachment., 2. A computer network that can be used only within an organisation is called___________., a. Internet, b. Intranet, c. None of these, 3. Which of the following is not a type of topology?, a. Star, b. Rocket, c. Bus, 4. Android was developed by__________., a. Microsoft, b. Apple Inc., c. Google, 5. __________ are platform dependent., a. Native apps, b. Hybrid apps, c. Web apps, , [5], , C. Write True or False:1. Modulation is the process of converting analog signals to digital signal., 2. A server is also called as host computer., 3. Grofers is an example of social networking app., 4. The concept of PAN was first introduced by Bill Gates at M.I.T.’s Media Lab., , [4], , Section-B, D. Answer the following questions:1. What is a computer network? Write three advantages., 2. Write the full forms:a. Li-Fi, b. NIC, c. DNS, d. HTTPS, e. SMTP, 3. What is the use of router? What is a hub?, 4. Explain – a. Peer-to-peer network, b. Tree topology, 5. What is the difference between MAN and CAN?, , [1+3=4], [5], , c. Bandwidth, , [1+1=2], [3], [2]