Quiz - Network - Quiz 1 1 One important role of the...

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Quiz 1 1. One important role of the Network Layer is to: A. correct the data error resulted from wireless transmissions B. provide internet application such as web or email to users C. Define the interface between two terminal and how the bits. i.e . . “1” and “0”, in terms of voltage levels and transmission rates, are send D. Perform network routing, i.e., to find the most efficient transmission route between two computers. 2. Following standards: IEEE 802.11b : 11Mbps; IEEE 802.11a : 54Mpbs; IEEE 802.11g : 54Mbps belong to : A. Ethernet B. Local area networks(LAN) C. Wireless Lan D. Wide area networks(WAN) 3. One important role of the Transport Layer is to: A. to perform network routing, i.e, to find the most efficient transmission route for data B. to multiplex and de-multiplex messages C. correct the data error resulted from wireless transmissions D. provide internet application such as Web or Email to users 4. Ethernet is A. Another type of internet B. a type of LAN (Local area networks) C. a network that uses satellite for communication between two far computers D. A WAN network with speed up to 1000Mbps 5. The difference between TCP and UDP is : A. TCP sets up connections, send data, and the terminate the connection while UDP just sends data without setting connections B. TCP control the transmissions of packets while UDP control the transmission of datagram C. TCP is a protocol in the Network layer while UDP is in the transport layer D. TCP is a connectionless protocol while UDP is a connection-oriented protocol. 6. Those five primitives ( operations): LISTEN, CONNECT, RECEIVE, SEND and DISCONNECT are for implementing: A. All services in the Application layer such as Web or Email B. Connection-oriented services in the transport layer C. connectionless services in the Transport Layer D. Routing service in the Network layer 7. As learned in class, computer networks are classified based on: A. the number of computers in the network, the speed of computers B. Distance, the speed of computers C. Switching, distance, the speed of computer D. Switching, distance 8. One of the most importance purpose of computer network is to (select one BEST answer) A. make computer run faster B. share the common resource
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C. use a common printer D. Increase the computational ability of computer. 9. Base on distance, two MOST IMPORTANT types of computer network are: A. Personal area networks and Wide area network B. Internet, Localarea networks and Metropolitan area networks C. Internet and Local area networks D. Personal area networks and Metropolitan area networks Quiz 2 1. in sliding window Flow control with window size of W, the source _____ A. sends a large file to avoid congestion B. waits for the acknowledgment(ACK) before sending next frame C. waits for the ACK before sending next W frames D. sends up to W frames without ACK 2. Flow control____ A. controls the data flow over the internet B. ensures the sender does not too much data that may overwhelm the receive
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Quiz - Network - Quiz 1 1 One important role of the...

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