Q. A data file of 1,00,000 characters contains only the characters g-l, with the frequencies as indicated in table. Using the variable-length code by Huffman codes, the file can be encoded with

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Q. In a fully connected mesh network with n devices, there are ................ physical channels to link all devices.

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Q. The baud rate of a signal is 600 baud/second. If each signal unit carries 6 bits, then the bit rate of a signal is .................

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Q. Match the following:

a. Data link layer                      i. Flow control
b. Network layer                       ii. Node to node delivery
c. Transport layer                     iii. Mail services
d. Application layer                 iv. Routing

Codes:
      a   b    c   d

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Q. An image is 1024∗800 pixels with 3 bytes/pixel. Assume the image is uncompressed. How long does it take to transmit it over a 10-Mbps Ethernet ?

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Q. The .............. measures the relative strengths of two signals or a signal at two different points.

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Q. Which one of the following media is multidrop?

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Q. What is the baud rate of the standard 10 Mbps Ethernet ?

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Q. Binary symmetric channel uses

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Q. Hamming distance between 100101000110 and 110111101101 is

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Q. Given code word 1110001010 is to be transmitted with even parity check bit. The encoded word to be transmitted for this code is

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Q. Networks that use different technologies can be connected by using

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Q. Both hosts and routers are TCP/IP protocol software. However, routers do not use protocol from all layers. The layer for which protocol software is not needed by a router is

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Q. Which of the following TCP/IP Internet protocol is diskless machine uses to obtain its IP address from a server ?

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Q. Decryption and encryption of data are the responsibility of which of the following layer ?

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Q. In which circuit switching, delivery of data is delayed because data must be stored and retrieved from RAM ?

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Q. In which Routing Method do all the routers have a common database?

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Q. Page Shift Keying (PSK) Method is used to modulate digital signal at 9600 bps using 16 level. Find the line signals and speed (i.e. modulation rate).

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Q. The station to hub distance in which it is 2000 metres.

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Q. Mobile IP provides two basic functions.

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