Computer Networks

911. The seventh layer does not deal with ____________ concepts very much

1. Hardware
2. Even operating system
3. Both a & b
4. None of these

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912. The shape of cell mat not be a ____________ and depends up on the environment

1. Hexagon
2. Circle
3. Pentagon
4. Both a & b

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913. The signal may be analog or digital with ____________

1. Amplitude
2. Frequency
3. Phase modulation
4. All of these

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914. The single mode fibers have the

1. Very broadest bandwidth
2. Lowest cost
3. Lowest attenuation of any optical fibre
4. All of these

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915. The size of cells in case of GSM and Personal Communication Service(PCS) are much smaller in the range of ____________

1. 5Kms
2. 10Kms
3. 15Kms
4. 20Kms

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916. The size of the multimedia file is the length of recording in seconds divided by:

1. 4
2. 8
3. 12
4. 16

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917. The size of the multimedia file is the product of ____________

1. Bit rate in bytes
2. Bit rate in kilobytes
3. Bit rate in gigabytes
4. None of these

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918. The sliding window protocol employs ____________

1. A wait approach
2. A stop approach
3. Both a & b
4. None of these

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919. The smallest addressable unit of data is defined as a group of ____________ bits is known as a byte:

1. 4
2. 8
3. 16
4. 32

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920. The SMDS can serve

1. Only area
2. Only nationally
3. Internationally
4. None of these

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