Question 111 : Start and stop bits are used in serial communication for
1. Error detection
2. Error correction
3. Synchronization
4. Slowing down the communication
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Question 112 : BAUD rate means
1. The number of bits transmitted per unit time.
2. The number of bytes transmitted per unit time.
3. The rate at which the signal changes.
4. None of the above
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Question 113 : The topology with highest reliability is
1. Bus topology
2. Star topology
3. Ring topology
4. Mesh topology
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Question 114 : Which of the following is a wrong example of network layer?
1. Internet Protocol (IP) - ARPANET
2. X.25 Packet Level Protocol (PLP)-ISO
3. Source routing and domain naming-USENet
4. X.25 level 2-ISO
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Question 115 : Error detection at the data link level is achieved by
1. Bit Stuffing
2. Cyclic Redundancy Code
3. Hamming Code
4. Equalization
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Question 116 : The method of communication in which transmission takes place in both directions, but only one direction at a time is called
1. Simplex
2. Four wire circuit
3. Full Duplex
4. Half Duplex
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Question 117 : Protocols are
1. Agreements on how communication components and DTE
2. Logical communication channels used for transferri
3. Physical communication channels used for transferr
4. None of the above
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