Q. Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10 kHz between the channels to prevent interference?

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Q. Find the checksum byte for the following data words:
10110011, 10101011, 01011010, 11010101

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Q. Generate the CRC codeword for the message x^3+1 using the generator polynomial x^3+x+1.

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Q. Generate the CRC codeword for the data word 1101011011 using generator 10011.

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Q. What is the hamming distance between these 2 codes: 10010010 and 11011001?

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Q. What is the hamming code for the data: 1001101?

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Q. The channel capacity is 100 Mbps, the frame length is 10000 bits and the arrival rate is 5000 frames/sec. Calculate the mean time delay.

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Q. A Data Link Layer converts a packet of data into __ finally.

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Q. The two sub-layers of a Data Link layer are ___.

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Q. Which is the sub-layer that accepts frames from the upper layer that is Network Layer?

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Q. The functions of a Logical Link Layer (LLC) are ___.

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Q. The types of data services offered by an LLC (Logical Link Control) layer are ___.

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Q. Which is thelayer that isresponsible for sharing thephysical media (transmission medium)among many computers or devices?

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Q. State TRUE/FALSE.
Every Computer or an Internet device has a unique MAC address.

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Q. The types of Medium Access Control are ___.

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Q. The modes of a MAC to share a transmission medium are ___.

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Q. In Round-robin mode of MAC, each station gets ___ priority whether access to the medium is needed or not.

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Q. In Reservation mode of MAC, each station in the network___ a time slot for a finite or infinite amount of time to access the shared medium.

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Q. In a contention mode of MAC implementation, each station in the network ___ data at the same time whether a collision occurs or not.

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Q. State TRUE/FALSE.
In a Contention mode of MAC implementation, different stations can have different priorities set by the admin.

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