Blog: CS601 Midterm Current Paper VU Fall 2011 (www.ivusolutions.com)

CS601 Midterm Current Paper VU Fall 2011 (www.ivusolutions.com)

FALL 2011 MID – TERM

CS601 DATA COMMUNICATION

DATE: 26 November 2011

TIME: 10 : 00 AM

Question No. 1: _______ is a multi point topology

Ring

Mesh

Tree

Bus

Question No. 2: Unidirectional traffic movement is overcome by dual ring technology.

True

False

Question No. 3: The _______ layer changes bits into electromagnetic signals.

Physical

Data Link

Transport

None of given

Question No. 4: In 8QAM each signal shift one baud represents________.

4 bits

2 bits

5 bits

3 bits

Question No. 5: In ________ transmission bits are transmitted over a single wire one at a time.

Asynchronous serial

Synchronous serial

Parallel

Asynchronous & Synchronous

Question No. 6: At the _________ layer a DCE takes data generated by DTE.

Physical

Transport

Data Link

Application

Question No. 7: In RS422 balanced mood two lines carry ________ signals which are not identical to each other.

Same

Different

Digital

Analog

Question No. 8: Standard orientation committee has _______ organization.

2

3

4

None of above

Question No. 9: Converting binary bits into digital signal is ____________

Analog to Digital

Digital to Analog

Digital to Digital

Analog to Analog

Question No. 10: Frequency band in which 99% of the total power resides is called _________.

Power bandwidth

Half power bandwidth

3db bandwidth

F.M

Question No. 11: The vertical distance from a given point on the wave form to the horizontal axis is called __________ of the signal.

Phase

Amplitude

Frequency

None of above

Question No. 12: Which one is not element of protocol.

Semantics

Timing

Common service Module

Question No. 13: The ________ layer is responsible for delivery of message from one process to another.

Transport Layer

Network Layer

Session Layer

Application Layer

Question No. 14: Dividing data into manageable parts or data chunks is ______________.

Packetizing

Framing

Both

None

Question No. 15: ________ is measured on the horizontal axis in time domain plot.

Time

Phase

Frequency

Signal

Question No. 16: What is the protocol data unit (PDU) employed at the network layer?

Segments

Packets

Frames

Bits

Question No. 17: Give the names of any two devices that can be used for connecting among following situations:

LAN to LAN

LAN to WAN

MAN to WAN

Question No. 18: Phase Modulation is one of the methods used for :

Analog to Digital Conversion

Analog o Analog Conversion

Digital to Analog Conversion

Question No. 19: What will be the frequency of a signal completing 10 cycle in one second?

Question No. 20: If 64 bits are sent over transmission medium in one second, what will be the bit rate and bit interval?

Question No. 21: How does DTE and DCE works together for end to end communication?

Question No. 22: Using HDB3 scheme, encode the signal “1100001011”

Question No. 23: Give advantages and disadvantages of Asynchronous and Synchronous transmission. Compare the both strategies.