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Time: 60 min

Marks: 42

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For Teacher's Use Only
Q No.	1	2	3	4	5	6	7	8	Total
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Q No.	9	10	11	12	13	14	15	16
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Q No.	17	18	19	20	21	22	23	24
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Q No.	25	26	27
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Question No: 1 ( Marks: 1 ) - Please choose one

Effective network mean that the network has fast delivery, timeliness and

► high bandwidth

► duplex transmission

► accurate transmission

► low bandwidth

Question No: 2 ( Marks: 1 ) - Please choose one

Which one best describes the given statement:

"To allow multiple users to share total capacity of a transmission medium"

► congestion control

► exchange management

► multiplexing

Question No: 3 ( Marks: 1 ) - Please choose one

A_________ provides a model for development that makes it possible for a product to work regardless of the individual manufacturer.

► protocol

► standard

► topology

► system

Question No: 4 ( Marks: 1 ) - Please choose one

_______ is a multipoint topology.

► Ring

► Mesh

► Tree

► Bus

Question No: 5 ( Marks: 1 ) - Please choose one

_________requires the maximum number of I/O ports.

► Bus

► Star

► Mesh

► Ring

Question No: 6 ( Marks: 1 ) - Please choose one

________ topology tells us how networks communicate with one another and how data is transferred.

► logical

► physical

► logical and physical

Question No: 7 ( Marks: 1 ) - Please choose one

Which topology requires a multipoint connection?

► Mesh

► Star

► Bus

► Ring

Question No: 8 ( Marks: 1 ) - Please choose one

Headers are added at layers 1 and 7 of OSI model.

► True

► False

Question No: 9 ( Marks: 1 ) - Please choose one

Internet with small “i” specifies the world wide Network the actual internet.

► True

► False

Question No: 10 ( Marks: 1 ) - Please choose one

The internet model consists of _________ layers.

► three

► two

► five

► seven

Question No: 11 ( Marks: 1 ) - Please choose one

As the data packet moves from the lower to the upper layers, headers are __________.

► added

► subtracted

► rearranged

► modified

Question No: 12 ( Marks: 1 ) - Please choose one

Data link layer deals with mechanical and electrical specifications of transmission medium and interface

► True

► False

Question No: 13 ( Marks: 1 ) - Please choose one

Which layer is responsible for source to destination delivery of entire message?

► transport layer

► network layer

► session layer

► application layer

Question No: 14 ( Marks: 1 ) - Please choose one

The inversion of the level at 1 bit is called as __________

► NRZ-L

► NRZ-I

► RZ

Question No: 15 ( Marks: 1 ) - Please choose one

Which of the encoding schemes have bandwidth problems?

► Differential Manchester

► AMI

► RZ

Question No: 16 ( Marks: 1 ) - Please choose one

Bi phase encoding is a type of bipolar encoding in which we use two voltage levels.

► True

► False

Question No: 17 ( Marks: 1 ) - Please choose one

ASK require a minimum bandwidth equal to its baud rate.

► True

► False

Question No: 18 ( Marks: 1 ) - Please choose one

A 56k modem can download at a rate of __________ Kbps and upload at a rate of __________ Kbps.

► 33.6: 33.6

► 33.6: 56.6

► 56.6: 33.6

► 56.6: 56.6

Question No: 19 ( Marks: 1 ) - Please choose one

In ____________ transmission the timing of the signal is unimportant.

► Asynchronous

► Synchronous

► Polar

► Bi-polar

Question No: 20 ( Marks: 1 ) - Please choose one

There are _________________ basic functional units involved in the communication of data.

► 3

► 1

► 2

► 4

Question No: 21 ( Marks: 1 ) - Please choose one

At the ______________layer, a DCE takes data generated by a DTE.

► physical

► transport

► data link

► application

Question No: 22 ( Marks: 1 ) - Please choose one

The last modified version of EIA-232 standard is ______________

► EIA-232 D

► EIA-232 A

► EIA-232 B

► EIA-232 C

Question No: 23 ( Marks: 1 ) - Please choose one

Traditional telephony lines carry frequencies btw 300 Hz and 3300 Hz giving them a bandwidth of 3000 Hz.

► 3100

► 3000

► 3200

► 3300

Question No: 24 ( Marks: 1 ) - Please choose one

We need ____________ to decompose a composite signal into its components.

► fourier transform

► nyquist theorem

► shannon capacity

Question No: 25 ( Marks: 3 )

At which layer synchronization of Bits occur and how?

Question No: 26 ( Marks: 5 )

What is meant by Zero Frequency and Infinite Frequency?

Question No: 27 ( Marks: 10 )

Describe functions of each layer of OSI Model briefly?

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