Computer Networks

761. The functions of the Network layer are

1. Logical addressing AND Routing
2. Fragmentation and reassembly
3. Datagram encapsulation
4. All of these

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762. The functions of the physical layer are

1. Describing hardware specifications
2. Encoding and signaling
3. Data transmission and reception
4. All of these

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763. The functions performed by logical layer are

1. Data encapsulation
2. Link management
3. Medium access
4. Both a & b

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764. The functions performed by physical layer are

1. Encoding the data
2. Medium access
3. Data encapsulation
4. Both a & b

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765. The fundamentals of Bit rate:

1. The sample uses different number of bits
2. The data is encoded by different number of bits
3. The material is sampled at different frequencies
4. The information is digitally compressed by different algorithms
5. All of these

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766. The gauge of coaxial cable is ____________ than the twisted pair

1. Thicker
2. Thinner
3. Heavy
4. Bulky

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767. The generic GSM network architecture which is composed of three subsystem are ____________

1. Radio subsystem (RSS)
2. Network and switching subsystem
3. Operation subsystem
4. All of these

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768. The geographical limit of a MAN may

1. Not span a city
2. Span a city
3. Either span or not
4. None of these

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769. The Go back-N ARQ overcomes the problem of

1. PAR
2. PER
3. PRA
4. DAR

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770. The Government of India had set up ERNET in ____________ to provide TCP/IP connections for education and research communities in India

1. 1976
2. 1986
3. 1996
4. 1999

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